CN106190317A

CN106190317A - The preparation method of coal gasifier, gasification system and activated coke

Info

Publication number: CN106190317A
Application number: CN201610583924.8A
Authority: CN
Inventors: 郑征; 汪国庆; 景旭亮; 周三; 李克忠
Original assignee: ENN Science and Technology Development Co Ltd
Current assignee: ENN Science and Technology Development Co Ltd
Priority date: 2016-07-22
Filing date: 2016-07-22
Publication date: 2016-12-07
Anticipated expiration: 2036-07-22
Also published as: CN106190317B

Abstract

The present invention discloses the preparation method of a kind of coal gasifier, gasification system and activated coke, relates to Coal Gasification Technology field, for solving the problem that in prior art, the preparation technology flow process of activated coke is longer and complicated.Described coal gasifier includes gasification zone, region of activation and communicating passage, and region of activation is positioned at the lower section of gasification zone, and communicating passage connects with gasification zone and region of activation respectively；Being provided with once activation shower nozzle and re-activation shower nozzle in region of activation, re-activation shower nozzle is positioned at the lower section once activating shower nozzle；Raw coal is passed through region of activation at semicoke and the raw gas of the reaction generation of gasification zone generating gasification through communicating passage；There is a priming reaction with an activated gas of once activation shower nozzle ejection in semicoke, generates activated coke intermediate；The re-activation gas generation re-activation that activated coke intermediate and re-activation shower nozzle spray reacts, and generates activated coke.

Description

The preparation method of coal gasifier, gasification system and activated coke

Technical field

The present invention relates to Coal Gasification Technology field, particularly relate to the system of a kind of coal gasifier, gasification system and activated coke Preparation Method.

Background technology

Coal gasification refers in specific equipment, under uniform temperature and pressure, raw coal generating gasification is reacted, such as coal hydrogenation Gasification, pyrolysis of coal etc., be converted into containing the fuel gas such as CO, H2, CH4 and tar, semicoke etc., to improve the utilization effect of raw coal Rate, and reduce environmental pollution.At present, after the reaction of raw coal generating gasification, generate semicoke and containing CO, H2, CH4, tar etc. Raw gas, wherein, semicoke is usually used as the raw material of preparation activated coke.

In the prior art, using semicoke as raw material prepare activated coke time, the preparation of semicoke is usual with preparing of activated coke Separately carry out, i.e. first pass through coal gasification and prepare semicoke, then using semicoke as raw material, by pulverizing, molding, carbonization, activation etc. The steps such as step, preparation activated coke, the preparation technology flow process complexity of activated coke, and pulverizing, molding, carbonization need extra specialty Equipment, certainly will cause higher equipment investment and operating cost.

Summary of the invention

It is an object of the invention to provide the preparation method of a kind of coal gasifier, gasification system and activated coke, be used for solving The technical problem that certainly in prior art, the preparation technology flow process of activated coke is longer and complicated.

To achieve these goals, the present invention provides following technical scheme:

A first aspect of the present invention is to provide a kind of coal gasifier, including gasification zone, region of activation and communicating passage, described Region of activation is positioned at the lower section of described gasification zone, and the upper end open of described communicating passage connects with described gasification zone, and described connection is led to The lower ending opening in road connects with described region of activation；Once activation shower nozzle and re-activation shower nozzle, institute it is provided with in described region of activation State re-activation shower nozzle be positioned at described in once activate the lower section of shower nozzle；

Raw coal is passed through described at semicoke and the raw gas of the reaction generation of described gasification zone generating gasification through described communicating passage Region of activation；There is a priming reaction with an activated gas of described once activation shower nozzle ejection in semicoke, generates in activated coke Mesosome；The re-activation gas generation re-activation that activated coke intermediate and described re-activation shower nozzle spray reacts, and generates and lives Property burnt.

A second aspect of the present invention is to provide a kind of gasification system, including coal gasification as described in technique scheme Stove.

A third aspect of the present invention is to provide the preparation method of a kind of activated coke, including:

Raw coal, in the gasification zone generating gasification reaction of coal gasifier, generates semicoke；

There is a priming reaction with an activated gas of the once activation shower nozzle ejection of described coal gasifier in semicoke, raw Viability burnt intermediate；

Activated coke intermediate is alive with the re-activation gas generation secondary of the re-activation shower nozzle ejection of described coal gasifier Change reaction, generate activated coke.

The coal gasifier that the present invention provides includes gasification zone and region of activation, and gasification zone is with region of activation by communicating passage even Logical, raw coal first generating gasification reaction in gasification zone, generate semicoke, semicoke in communicating passage is passed through region of activation, and with once , there is a priming reaction, generate activated coke intermediate, activated coke intermediate in activated gas mixing of activation shower nozzle ejection Mix with the re-activation gas of re-activation shower nozzle ejection, re-activation reaction occurs, generates activated coke.Therefore, semicoke The preparation of preparation and activated coke successively can be carried out, with semicoke in prior art in the coal gasifier that the embodiment of the present invention provides Preparation separately compare with the preparation of activated coke, decrease the steps such as the pulverizing of semicoke, molding, carbonization, reduce activity The complexity of burnt preparation technology flow process, and need not extra professional equipment, can complete in gasification furnace, reduce and set Standby investment and operating cost.

Accompanying drawing explanation

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:

The structural representation of the coal gasifier that Fig. 1 provides for the embodiment of the present invention；

The structural representation of the gasification system that Fig. 2 provides for the embodiment of the present invention；

The flow chart of the preparation method of the activated coke that Fig. 3 provides for the embodiment of the present invention.

Reference:

10-coal gasifier, 11-gasification zone,

11a-material inlet, 11b-gasification agent inlet,

12-region of activation, 13-communicating passage,

13a-top necking segment, direct tube section in the middle part of 13b-,

13c-bottom expanding reach, 14-once activates shower nozzle,

15-re-activation shower nozzle, 16-raw gas exports,

17-separating feed mouth, 20-cyclone separator,

30-gives up pot, 31-superheat section,

Saturated section of 32-, 40-drum,

50-cooling tank, 60-raw gas after-treatment device.

Detailed description of the invention

In order to further illustrate coal gasifier, gasification system and the preparation side of activated coke that the embodiment of the present invention provides Method, is described in detail below in conjunction with Figure of description.

Referring to Fig. 1, the coal gasifier 10 that the embodiment of the present invention provides includes gasification zone 11 and region of activation 12, region of activation 12 Being positioned at the lower section of gasification zone 11, region of activation 12 is connected by communicating passage 13 with gasification zone 11, the upper end open of communicating passage 13 Connecting with gasification zone 11, the lower ending opening of communicating passage 13 connects with region of activation 12；It is provided with in region of activation 12 and once activates spray 14 and re-activation shower nozzle 15, re-activation shower nozzle 15 is positioned at the lower section once activating shower nozzle 14；Raw coal is 11, gasification zone Semicoke and raw gas that raw gasification reaction generates are passed through region of activation 12 through communicating passage 13；Semicoke sprays with once activation shower nozzle 14 Activated gas there is a priming reaction, generate activated coke intermediate；Activated coke intermediate and re-activation shower nozzle 15 The re-activation gas generation re-activation reaction of ejection, generates activated coke.

It is worthy of note, in above-mentioned coal gasifier 10, raw coal is generating gasification reaction in gasification zone 11, such as, former Coal occurs hydrogasification to react in gasification zone 11, and now, coal gasifier 10 can be coal hydrogenation gasification stove, the knot of gasification zone 11 Structure can be similar with the furnace chamber of coal hydrogenation gasification stove with arrangement, and the structure of the furnace wall of gasification zone 11 and arrangement can be with The furnace wall of coal hydrogenation gasification stove is similar with arrangement, and condition when raw coal occurs hydrogasification to react in gasification zone 11 with Condition when raw coal occurs hydrogasification to react in coal hydrogenation gasification stove is similar to, or, in gasification zone 11, there is heat in raw coal Solving reaction, now, coal gasifier 10 can be that coal heat decomposition stove, the structure of gasification zone 11 and arrangement can be with coal heat decomposition stoves Furnace chamber is similar to, and the structure of the furnace wall of gasification zone 11 can be similar with the furnace wall of coal heat decomposition stove and arrangement with arrangement, and Raw coal is condition during generating gasification reaction bar when occurring hydrogasification to react in coal heat decomposition stove with raw coal in gasification zone 11 Part is similar to.

When being embodied as, please continue to refer to Fig. 1, the coal gasifier 10 that the embodiment of the present invention provides includes gasification zone 11 and lives Changing district 12, region of activation 12 is positioned at the lower section of gasification zone 11, and gasification zone 11 is connected by communicating passage 13 with region of activation 12, and connection is logical Road 13 has upper end open and lower ending opening, and the upper end open of communicating passage 13 is communicating passage and opening that gasification zone 11 connects Mouthful, the lower ending opening of communicating passage 13 is the opening that communicating passage 13 connects with region of activation 12, i.e. the upper end of communicating passage 13 is opened Mouth connects with gasification zone 11, and the lower ending opening of communicating passage 13 connects with region of activation 12.

The gasification zone 11 of coal gasifier 10 is similar with the furnace chamber of coal gasifier in prior art, and such as, raw coal is in gasification zone Hydrogasification reaction occurs in 11, and now, gasification zone 11 is surrounded by inner core, and inner core is outside equipped with urceolus, between urceolus and inner core Being provided with refractory insulating layer, urceolus is provided with material inlet 11a and gasification agent inlet 11b, the top of gasification zone 11 is provided with One nozzle or multiple nozzle, nozzle includes material channel and is uniformly arranged gasifying agent passage, material channel around material channel Connecting with material inlet 11a, gasifying agent passage connects with gasification agent inlet 11b, and generally, gasification agent inlet 11b includes two, and two Individual gasification agent inlet 11b is symmetrically distributed in the both sides of material inlet 11a, is passed through and has uniform temperature in gasification agent inlet 11b Gasifying agent, gasifying agent includes hydrogen and oxygen；Raw coal is passed through in material channel through material inlet 11a, then sprays through material channel Entering in gasification zone 11, gasifying agent is passed through gasifying agent passage through two gasification agent inlet 11b respectively, and sprays in gasification zone 11, former Coal mixes in gasification zone 11 with gasifying agent, and raw coal occurs hydrogasification to react in gasification zone 11, generates semicoke and contains The raw gas of fuel gas, tar etc., temperature when raw coal occurs hydrogasification to react in gasification zone 11 can be 850 DEG C～ 1000 DEG C, the pressure in gasification zone 11 can be 5MPa～10MPa.

Or, there is pyrolytic reaction in raw coal in gasification zone 11, now, gasification zone 11 is surrounded by inner core, arranges outside inner core There is urceolus, between urceolus and inner core, be provided with refractory insulating layer, urceolus is provided with material inlet 11a and gasification agent inlet 11b, Material inlet 11a connects with gasification zone 11 respectively with gasification agent inlet 11b, raw coal in material inlet 11a is passed through gasification zone 11, Thermal medium is in gasification agent inlet 11b is passed through gasification zone 11, and thermal medium can be noble gas, or, noble gas is with a small amount of The mixed gas formed after the mixing of fuel gas such as flue gas, and thermal medium has certain temperature, raw coal is in gasification zone 11 Pyrolytic reaction occurring, generates semicoke and the raw gas containing fuel gas, tar etc., raw coal is pyrolyzed in gasification zone 11 Temperature during reaction can be 800 DEG C～1000 DEG C.

After raw coal completes gasification reaction in gasification zone 11, semicoke and the raw gas of generation are passed through activation through communicating passage 13 District 12.Being provided with once activation shower nozzle 14 and re-activation shower nozzle 15 in region of activation 12, re-activation shower nozzle 15 is positioned at once lives Changing the lower section of shower nozzle 14, such as, as it is shown in figure 1, once activation shower nozzle 14 may be located at the top of region of activation 12, re-activation sprays 15 bottoms that may be located at region of activation 12；Once activation shower nozzle 14 sprays an activated gas, and raw coal is sent out in gasification zone 11 The semicoke generated after raw gasification reaction and raw gas are passed through region of activation 12, semicoke and an activated gas mixing, and occur once Priming reaction, generates activated coke intermediate, and activated coke intermediate is actually similar with the activated coke of the most low-quality low performance, I.e. activated coke intermediate can be the activated coke not activated completely；Re-activation shower nozzle 15 sprays re-activation gas, semicoke The activated coke intermediate generated after there is a priming reaction with an activated gas is under gravity towards the lower section of Fig. 1 Mobile, activated coke intermediate mixes with re-activation gas, and occurs re-activation to react, and generates activated coke.

From the foregoing, the coal gasifier 10 that the embodiment of the present invention provides includes gasification zone 11 and region of activation 12, gasification zone 11 are connected by communicating passage 13 with region of activation 12, raw coal first generating gasification reaction in gasification zone 11, generate semicoke, semicoke warp Communicating passage 13 is passed through in region of activation 12, and mixes with the activated gas once activating shower nozzle 14 ejection, occurs once to live Changing reaction, generate activated coke intermediate, the re-activation gas that activated coke intermediate sprays with re-activation shower nozzle 15 mixes, and sends out Raw re-activation reaction, generates activated coke.Therefore, the preparation of semicoke and the preparation of activated coke can provide in the embodiment of the present invention Coal gasifier 10 in successively carry out, separately carry out with the preparation of semicoke in prior art and the preparation of activated coke compared with, reduce The steps such as the pulverizing of semicoke, carbonization, decrease the preparation technology flow process of activated coke, and reduce the preparation technology stream of activated coke The complexity of journey.

It addition, the preparation of the preparation of semicoke and activated coke can in the coal gasifier 10 that the embodiment of the present invention provides successively Carry out, separately carry out with the preparation of semicoke in prior art and the preparation of activated coke compared with, decrease the pulverizing of semicoke, carbonization etc. Step, can avoid collection and the transport of semicoke simultaneously, thus decrease the use of equipment, and saves preparation activated coke and spent The time taken, thus reduce equipment cost and time cost, and then reduce the preparation cost of activated coke.

Furthermore, semicoke and raw gas that raw coal generates after generating gasification reaction in gasification zone 11 are passed through through communicating passage 13 In region of activation 12, semicoke with once activation shower nozzle 14 ejection an activated gas mix time, raw gas also with once activate gas Body mixes, and the temperature of an activated gas is usually less than the temperature of raw gas, thus raw gas can be entered by an activated gas Row cooling, makes the temperature of raw gas reduce, thus prevents the tar in raw gas from the most at high temperature cracking.

It is noted that in the coal gasifier 10 that the embodiment of the present invention provides, be provided with in region of activation 12 and once live Change shower nozzle 14 and re-activation shower nozzle 15, the semicoke that raw coal generates after generating gasification reaction in gasification zone 11 first with once activate There is a priming reaction in activated gas of shower nozzle 14 ejection, generates the burnt intermediate of activation, and the burnt intermediate of activation is again with two The re-activation gas generation re-activation reaction of secondary activation shower nozzle 15 ejection, generates activated coke, say, that warp after semicoke is first After crossing twice activation, generate activated coke, only semicoke is once activated with prior art compared with, can increase in activated coke Hole quantity, improve activated coke quality.

It should be noted that an activated gas of once activation shower nozzle 14 ejection can be water vapour, water vapour and half After burnt mixing, after carrying out pore-creating, semicoke and an activated gas priming reaction of generation in semicoke, in the activated coke of generation Between internal there is abundant hole, in microcellular structure, activated coke intermediate actually with the activity of the most low-quality low performance Burnt similar, now, the temperature of semicoke and an activated gas priming reaction of generation can be 700 DEG C～900 DEG C, now, The temperature of raw gas also drops to 700 DEG C～900 DEG C；The re-activation gas of re-activation shower nozzle 15 ejection can be to be steamed by water The mixed gas that vapour, carbon dioxide and noble gas are mixed to form, the hole in activated coke intermediate is expanded by carbon dioxide Hole, i.e. carbon dioxide make the expansion of pores in activated coke intermediate, and water vapour then carries out pore-creating in activated coke intermediate, to increase Adding the quantity of hole in the activated coke of generation, noble gas is then used for loosen activated coke intermediate and activated coke, prevents activity Burnt intermediate and activated coke are compacted in the bottom of region of activation 12, and then prevent activation journey when activating activated coke intermediate Degree produces harmful effect, and improves activated coke discharge convenience.Activated coke intermediate and re-activation gas generation re-activation The temperature of reaction can be 600 DEG C～850 DEG C.

In the above-described embodiments, the communicating passage 13 of connection gasification zone 11 and region of activation 12 can be constant the leading to of thickness Road, it is also possible to be the passage of thickness change.In embodiments of the present invention, please continue to refer to Fig. 1, communicating passage 13 be middle part thin, The bottleneck shape communicating passage that two ends are thick.Specifically, the cross sectional shape of communicating passage 13 is circular, points to region of activation along gasification zone 11 Direction from top to bottom in the direction of 12, i.e. Fig. 1, communicating passage 13 include top necking segment 13a, middle part direct tube section 13b and under Portion expanding reach 13c, wherein, the upper end open of top necking segment 13a connects with gasification zone 11, and the upper end of top necking segment 13a is opened Conduit wall at Kou is connected with the inner core of gasification zone 11 and seamlessly transits, and the upper end open of top necking segment 13a is also that connection is logical The upper end open in road 13, the i.e. lower end of the inner core of gasification zone 11 are inwardly shunk in arc-shaped, open with the upper end of top necking segment 15 Conduit wall at Kou connects and seamlessly transits, and direction from top to bottom in Fig. 1, the diameter of top necking segment 15 is gradually reduced, i.e. Top necking segment 13a is funnel-form；Middle part direct tube section 13b connects with top necking segment 13a and bottom expanding reach 13c respectively, in The conduit wall of portion direct tube section 13b respectively with the conduit wall of top necking segment 13a and the conduit wall of bottom expanding reach 13c is connected and flat Slipping over and cross, the diameter everywhere of middle part direct tube section 13b is identical；The lower ending opening of bottom expanding reach 13c connects with region of activation 12, under The lower ending opening of portion expanding reach 3c is also the lower ending opening of communicating passage 13, direction from top to bottom in Fig. 1, bottom expanding reach The diameter of 13c is gradually increased, i.e. bottom expanding reach 13c is inverted funnel-form.

Raw coal in gasification zone 11 generating gasification reaction after, the semicoke of generation and raw gas with certain flow velocity towards gasification When the flowing underneath in district 11, semicoke and raw gas flow to the bottom of gasification zone 11, a portion semicoke and raw gas to During lower flowing, the conduit wall with top necking segment 13a contacts, and another part semicoke and raw gas are then by gasification zone 11 Middle part flows to the middle part of top necking segment 13a, and conduit wall with top necking segment 13a does not contacts.Above-mentioned two parts semicoke With in raw gas, the semicoke contacted with the conduit wall of top necking segment 13a and raw gas can be along the passages of top necking segment 13a Wall and gasification zone 11 inwall turn back to gasification zone 11, participate in gasification reaction；The conduit wall with top necking segment 13a does not contacts Semicoke and raw gas then flow to middle part direct tube section 13b through top necking segment 13a, and continue to run to bottom expanding reach 13c, and half When Jiao and raw gas are flowed to bottom expanding reach 13c by middle part direct tube section 13b, at middle part direct tube section 13b and bottom expanding reach 13c Between transition region conduit wall effect under, the flow velocity of the semicoke and raw gas that flow to bottom expanding reach 13c can reduce.

From the foregoing, communicating passage 13 is the bottleneck shape communicating passage that middle part is thin, two ends are thick, semicoke and raw gas are by gas Change district 11 when flowing to the top section of communicating passage 13, the semicoke that contacts with the conduit wall of the top section of communicating passage 13 and Raw gas can turn back in gasification zone 11, participates in gasification reaction, i.e. semicoke and raw gas and is flowed to communicating passage 13 by gasification zone 11 Top necking segment 13a time, the semicoke contacted with the conduit wall of top necking segment 13a and raw gas can turn back in gasification zone 11, Continue to participate in gasification reaction, keep more stable temperature and pressure in making gasification zone 11, prevent the temperature in gasification zone 11 and pressure Power has greatly changed, and then prevents the gasification reaction to raw coal from producing harmful effect, and improves raw coal and be converted into semicoke Conversion ratio.

It addition, communicating passage 13 is the bottleneck shape communicating passage that middle part is thin, two ends are thick, semicoke and raw gas are by communicating passage When the central section of 13 flows to the compresses lower section of communicating passage 13, in central section and the communicating passage 13 of communicating passage 13 Under the effect of the transition region between compresses lower section, flow to the semicoke of the compresses lower section of communicating passage 13 and the flow velocity meeting of raw gas Reduce, when i.e. semicoke and raw gas are flowed to bottom expanding reach 13c by middle part direct tube section 13b, in middle part direct tube section 13b and bottom Under the effect of the conduit wall of the transition region between expanding reach 13c, flow to semicoke and the flow velocity of raw gas of bottom expanding reach 13c Can reduce, flow velocity when semicoke and raw gas are flowed in region of activation 12 by bottom expanding reach 13c reduces, thus so that half Burnt and raw gas is fully contacted with an activated gas in region of activation 12, improves semicoke, raw gas and an activated gas Mixing uniformity, improves semicoke and extent of reaction during activated gas mixing priming reaction of generation, thus improve right Activation effect when semicoke activates, at the same time it can also be the cooling effect that activated gas of improvement is to raw gas.

Furthermore, communicating passage 13 is the bottleneck shape communicating passage that middle part is thin, two ends are thick, and semicoke and raw gas are by communicating passage When the central section of 13 flows to the compresses lower section of communicating passage 13, in central section and the communicating passage 13 of communicating passage 13 Under the effect of the transition region between compresses lower section, flow to the semicoke of the compresses lower section of communicating passage 13 and the flow velocity meeting of raw gas Reduce, when i.e. semicoke and raw gas are flowed to bottom expanding reach 13c by middle part direct tube section 13b, in middle part direct tube section 13b and bottom Under the effect of the conduit wall of the transition region between expanding reach 13c, flow to semicoke and the flow velocity of raw gas of bottom expanding reach 13c Can reduce, and the flow velocity of the degree that the flow velocity of semicoke reduces and raw gas reduces degree and generally differs, thus flow to activation The flow velocity of the semicoke in district 12 is different from the flow velocity of the raw gas flowed in region of activation 12, thus convenient by semicoke and raw gas Separate.

In actual applications, the cross sectional shape of communicating passage 13 can be circle, triangle, tetragon or polygon, In order to prevent semicoke from sticking on the conduit wall of communicating passage 13, the cross sectional shape of communicating passage 13 is preferably circular, improves half Burnt mobility in communicating passage 13, prevents semicoke from sticking on the conduit wall of communicating passage 13.

In the above-described embodiments, the conduit wall at the lower ending opening of communicating passage 13 can be connected with the furnace wall of region of activation 12 And seamlessly transit, the conduit wall at the lower ending opening of communicating passage 13 can not also be connected with the furnace wall of region of activation 12.At this In bright embodiment, please continue to refer to Fig. 1, the conduit wall at the lower ending opening of communicating passage 13 can not also be with the stove of region of activation 12 Wall connects, and the lower ending opening of communicating passage 13 stretches in region of activation 12, i.e. conduit wall at the lower ending opening of communicating passage 13 Stretching in region of activation 12, the furnace wall of region of activation 12 is provided with raw gas outlet 16, the lower ending opening of communicating passage 13 is positioned at slightly The lower section of gas exit 16.For example, on the furnace wall on the top that raw gas outlet 16 is positioned at region of activation 12, communicating passage 13 Lower ending opening stretches in region of activation 12, and the conduit wall at the lower ending opening of communicating passage 13 also stretches in region of activation 12, and connection is logical The lower ending opening in road 13 is positioned at the lower section of raw gas outlet 16, thus the conduit wall at the lower ending opening of communicating passage 13 will connection The lower ending opening of passage 13 separates with raw gas outlet 16.

Semicoke and raw gas are passed through region of activation 12 through communicating passage 13, after mixing with an activated gas, semicoke with once Activated gas generates activated coke intermediate after there is a priming reaction, and activated coke intermediate then continues to flow downward, raw gas Then it is passed through in external device (ED), owing to the conduit wall at the lower ending opening of communicating passage 13 is by communicating passage 13 through raw gas outlet 16 Lower ending opening and raw gas outlet 16 separate, thus be possible to prevent activated coke intermediate to lead to through raw gas outlet 16 with raw gas Enter in external device (ED), thus increase activated coke yield.

It is worthy of note, raw gas outlet 16 is arranged on the furnace wall of region of activation 12, and raw gas exports 16 through raw gas Before being passed through external device (ED), first in communicating passage 13 is passed through region of activation 12, and contact and mix with an activated gas, once Raw gas can be cooled down by activated gas, and the raw gas after an activated gas cooling is outside raw gas outlet 16 is passed through In part device, thus the setting of the external device (ED) for cooling down raw gas can be reduced, reduce when raw gas is processed Equipment cost.

In the above-described embodiments, the once activation shower nozzle 14 in region of activation 12 sprays an activated gas, semicoke with once There is a priming reaction in activated gas, once the set-up mode of activation shower nozzle 14 can have multiple, such as, once activates shower nozzle On 14 sides that can be arranged on gasification zone 12, once activation shower nozzle 14 is positioned at the lower section of lower ending opening of communicating passage 13, and one The injection direction of secondary activation shower nozzle 14, towards the lower section of the lower ending opening of communicating passage 13, the most once activates the injection side of shower nozzle 14 To the lower section of the opening connected with region of activation 12 towards communicating passage 13, when once activation shower nozzle 14 sprays an activated gas, The flow direction that the flow direction of activated gas is flowed in region of activation 12 by communicating passage 13 with semicoke is in a certain angle, At this point it is possible to arrange multiple once activation shower nozzle 14 on the side in gasification zone 12, multiple once activation shower nozzles 14 enclose jointly Become one ring-type.

In embodiments of the present invention, please continue to refer to Fig. 1, once activation shower nozzle 14 is positioned at the lower ending opening of communicating passage 13 Lower section, once the injection direction of activation shower nozzle 14 is towards the lower ending opening of communicating passage 13, and once activation shower nozzle 14 sprays Activated gas cover the lower ending opening of communicating passage 13.Specifically, once activation shower nozzle 14 is positioned at communicating passage 13 The lower section of lower ending opening, and once activation shower nozzle 14 injection direction towards the lower ending opening of communicating passage 13, the most once activate The jet face of shower nozzle 14 is the most right with the lower ending opening of communicating passage 13, when once activation shower nozzle 14 sprays an activated gas, and one Secondary activated gas flows towards the lower ending opening of communicating passage 13, and the lower end that activated gas flows to communicating passage 13 is opened Time at Kou, the area that activated gas is covered, more than the area of section of the lower ending opening of communicating passage 13, the most once activates When gas flows at the lower ending opening of communicating passage 13, an activated gas can cover the lower ending opening of communicating passage 13, Such as, once an activated gas of activation shower nozzle 14 ejection is the parallel shape lower ending opening flowing towards communicating passage 13, i.e. Activated gas towards the lower ending opening of communicating passage 13 flow time area of section constant, now, once activation shower nozzle 14 The area of jet face then more than the area of section of lower ending opening of communicating passage 13, or, once activation shower nozzle 14 ejection One time activated gas is the diffusion type lower ending opening flowing towards communicating passage 13, and i.e. one time activated gas is towards communicating passage 13 Lower ending opening flowing time area of section be gradually increased, now, once the area of jet face of activation shower nozzle 14 is smaller than even The area of section of the lower ending opening of circulation passage 13.It is worthy of note, once activation shower nozzle 14 can include a nozzle, it is possible to To include multiple nozzle.

When semicoke and raw gas are passed through region of activation 12 through communicating passage 13, spray once owing to once activating shower nozzle 14 Activated gas covers the lower ending opening of communicating passage 13, thus semicoke and raw gas at the lower ending opening of communicating passage 13 with one Secondary activated gas is fully contacted and mixes, such that it is able to improve activation degree when activating semicoke, and improves Cooling effect when one time raw gas is cooled down by activated gas.

Once activate the lower section that shower nozzle 14 is positioned at the lower ending opening of communicating passage 13, once activate the injection direction of shower nozzle 14 Towards the lower ending opening of communicating passage 13, and an activated gas of once activation shower nozzle 14 ejection covers communicating passage 13 times End opening, thus once activation shower nozzle 14 can spray an activated gas towards the lower ending opening of communicating passage 13, makes connection At the lower ending opening of passage 13, activated gas accounts for the volumetric fraction of raw gas increases, thus improves and live semicoke Activation degree during change, such as, when once an activated gas of activation shower nozzle 14 ejection is water vapour, once lives by adjusting Change the emitted dose of shower nozzle 14, so that water vapour accounts for the volumetric fraction of raw gas and is more than at the lower ending opening of communicating passage 13 45%, improve activation degree when semicoke is activated.

Please continue to refer to Fig. 1, in embodiments of the present invention, once activation shower nozzle 14 and communicating passage 13 lower ending opening it Between there is spacing.When semicoke and raw gas are passed through region of activation 12 through communicating passage 13, semicoke is opened in the lower end of communicating passage 13 Kou Chu and an activated gas are fully contacted, and generation activated coke intermediate after a priming reaction occur, owing to once activating There is between the lower ending opening of shower nozzle 14 and communicating passage 13 spacing, thus activated coke intermediate can be facilitated to continue to dirty Dynamic, and reduce produced resistance when activated coke intermediate is flowed downward by an activated gas.

Applying in reality, once the spacing between activation shower nozzle 14 and the lower ending opening of communicating passage 13 can be according to coal gas The size of the region of activation 12 changing stove 10 is set, such as, for the region of activation 12 of large-size, once activate shower nozzle 14 and connect Spacing between the lower ending opening of circulation passage 13 may be set in 0.2m or more than 0.2m, for the region of activation 12 of reduced size, Once the spacing between activation shower nozzle 14 and the lower ending opening of communicating passage 13 may be set in 0.2m or below 0.2m.Activation The size in district 12 has different meanings according to the shape of region of activation 12, such as, when region of activation 12 is cylindric region of activation, and activation The size in district 12 includes the diameter of region of activation 12, height and slenderness ratio.

Please continue to refer to Fig. 1, in embodiments of the present invention, re-activation shower nozzle 15 is ventilation cone, and ventilation cone is arranged on work Change the bottom in district 12, towards region of activation 12 at the bottom of the cone of ventilation cone, and the furnace wall patch of the edge at the cone end of ventilation cone and region of activation 12 Close；The vertex of a cone of ventilation cone is provided with activated coke feed opening 18.Specifically, re-activation shower nozzle 15 can be to arrange region of activation 12 The ventilation cone of bottom, ventilation cone includes taper shell, air cavity and pore, and air cavity is around the outside setting of taper shell, the quantity of pore The most multiple, multiple pores are uniformly arranged on taper shell, and multiple pore connects with air cavity respectively；Court at the bottom of the cone of ventilation cone To region of activation 12, i.e. ventilation cone is inverted, and the cone end of ventilation cone is towards the top in Fig. 1, and the cone edge at the end of ventilation cone and work Change the furnace wall laminating of the furnace wall laminating in district 12, the i.e. bottom of the taper shell of ventilation cone and region of activation 12；The vertex of a cone of ventilation cone is arranged Active burnt feed opening.During ventilation cone ejection re-activation gas, re-activation gas is first passed through in the air cavity of ventilation cone, then In air cavity is passed through pore, then in pore is passed through region of activation 12.

Semicoke and activated gas generate activated coke intermediate after there is a priming reaction, activated coke intermediate towards The flows of region of activation 12, and pile up in the bottom of region of activation 12, i.e. activated coke intermediate heap in the taper shell of ventilation cone Amassing, and piling height is gradually increased, activated coke intermediate connects towards the re-activation gas of ejection in region of activation 12 with ventilation cone Touch, and react with re-activation gas generation re-activation, generate activated coke.Owing to multiple pores of ventilation cone are evenly distributed on On taper shell, thus activated coke intermediate is when the bottom of region of activation 12 is piled up, and can be fully contacted with secondary active gases, from And improve the activation degree of activated coke intermediate, improve the quality of activated coke.

Re-activation shower nozzle 15 is set to ventilation cone, and activated coke feed opening 18 is set at the vertex of a cone of ventilation cone, activity Burnt intermediate is piled up in the bottom of region of activation 12, and reacts with re-activation gas generation re-activation, generates activated coke, activity Jiao is passed through external equipment through activated coke feed opening 18, and owing to ventilation cone is inverted, thus activated coke can be successfully under activated coke Material mouth 18 is passed through external equipment.

The edge at the cone end of ventilation cone and the furnace wall laminating of region of activation 12, be possible to prevent activated coke intermediate to flow to ventilation The outside of cone, thus prevent the preparation quantity of activated coke from reducing, reduce the waste of activated coke intermediate, and prevent coal gasifier 10 Operationally break down.

In the above-described embodiments, the angle between the conical surface and the horizontal plane of ventilation cone is more than the angle of repose of activated coke.Please continue Continuous refering to Fig. 1, the angle between the conical surface and the horizontal plane of ventilation cone is β, and the angle β between the conical surface and the horizontal plane of ventilation cone is big In the angle of repose of activated coke, usual and activated coke the angle of repose of the angle of repose of activated coke intermediate is suitable, the bottom of region of activation 12 When the height of the burnt intermediate of activation piled up exceedes the height of ventilation cone, the re-activation gas of each pore ejection of ventilation cone All can contact with activated coke intermediate, such that it is able to improve the utilization rate of the re-activation gas of ventilation cone ejection.

In the above-described embodiments, through raw gas outlet 16 be passed through in the raw gas of external equipment may be mingled with amount of activated Burnt intermediate, in order to reduce the waste of activated coke intermediate, please continue to refer to Fig. 1, in embodiments of the present invention, region of activation 12 Being additionally provided with separating feed mouth 17 on furnace wall, separating feed mouth 17 is positioned at the lower section once activating shower nozzle 14, and separating feed mouth 17 tops being positioned at re-activation shower nozzle 15.The raw gas being passed through external equipment through raw gas outlet 16 flows through dividing of external equipment When device, under the effect of segregation apparatus, the activated coke intermediate being mixed in raw gas is separated, and separated enter Material mouth 17 is passed through in region of activation 12, and the activated coke intermediate separated from raw gas is region of activation 12 in and re-activation gas Body contacts, and occurs re-activation to react, and generates activated coke, thus decreases the waste of activated coke intermediate, improves activity The yield of burnt intermediate, and then improve the yield of activated coke.

In embodiments of the present invention, coal gasifier 10 being provided with apparatus for measuring charge level, apparatus for measuring charge level is used for measuring The height that activated coke intermediate is piled up in the bottom of region of activation 12.By apparatus for measuring charge level detection activated coke intermediate in activation The height that the bottom in district 12 is piled up, and by raw coal charging rate at material inlet 11a and activated coke in activated coke The blanking velocity of feed opening 18 is adjusted respectively, and the height that activated coke intermediate can be made to pile up in the bottom of region of activation 12 is protected Keep steady fixed so that activated coke intermediate is fully contacted with re-activation gas, and ensure activated coke intermediate and re-activation gas The time of body contact, thus improve activation degree when activated coke intermediate is activated, improve the quality of activated coke.Separately Outward, the height piled up in the bottom of region of activation 12 by apparatus for measuring charge level detection activated coke intermediate, and by raw coal is existed Charging rate and activated coke at material inlet 11a are adjusted respectively at the blanking velocity of activated coke feed opening 18, make to live Property the height piled up in the bottom of region of activation 12 of Jiao's intermediate higher than height between separating feed mouth 17 and the bottom of region of activation 12 Degree, i.e. activated coke intermediate cover separating feed mouth 17, such that it is able to the re-activation gas preventing ventilation cone from spraying is separated Charging aperture 17 flows out outside region of activation 12.

Referring to Fig. 2, the embodiment of the present invention also provides for a kind of gasification system, and described gasification system includes such as above-mentioned reality Execute the coal gasifier 10 that example provides.

Described gasification system is identical relative to prior art have the advantage that with above-mentioned coal gasifier, the most superfluous at this State.

Please continue to refer to Fig. 2, the gasification system that the embodiment of the present invention provides also includes cyclone separator 20, cyclonic separation The gas access of device 20 exports 16 with the raw gas of coal gasifier 10 and connects, the solid outlet of cyclone separator 20 and coal gasifier The separating feed mouth 17 of 10 connects.Raw coal generating gasification reaction in the gasification zone 11 of coal gasifier 10 generates semicoke and rough coal Gas, semicoke and raw gas are passed through the region of activation 12 of coal gasifier 10 through the communicating passage 13 of coal gasifier 10, and in region of activation 12 Interior and once activation shower nozzle 14 ejection a activated gas mixes, and semicoke and an activated gas occur a priming reaction, Generating activated coke intermediate, raw gas and an activated gas contact, one time raw gas is cooled down by activated gas, raw gas At a temperature of be down to 700 DEG C～900 DEG C, the raw gas that temperature declines 16 is passed through in cyclone separator 20 through raw gas outlet, rotation The activated coke intermediate being mixed in raw gas is separated by wind separator 20, and the activated coke intermediate separated is then through dividing It is passed through in region of activation 12 from charging aperture 17, and anti-with the re-activation gas generation re-activation of re-activation shower nozzle 15 ejection Should, generate activated coke.

The setting of cyclone separator 20, separates the activated coke intermediate being mixed in raw gas, in the middle of activated coke The separated charging aperture of body 17 is passed through in region of activation 12, participates in re-activation reaction, generates activated coke, thus decrease in activated coke The waste of mesosome, improves the yield of activated coke intermediate, and then improves the yield of activated coke.It addition, cyclone separator 20 The activated coke intermediate being mixed in raw gas is separated, reduces the dustiness in raw gas, such that it is able to improve from The quality of the products such as the tar extracted in raw gas.

Please continue to refer to Fig. 2, described gasification system also includes useless pot 30 and drum 40, and wherein, useless pot 30 includes successively Connecting the superheat section 31 of gas outlet of cyclone separator 20 and saturated section 32, superheat section 31 is provided with superheat section steam inlet Exporting with superheated steam, saturated section 32 is provided with saturated section of liquid inlet and saturated vapor outlet；Drum 40 is provided with drum liquid Body outlet, drum steam (vapor) outlet and drum steam inlet；Saturated section of liquid inlet connects with drum liquid outlet, and saturated vapor goes out Mouth connects with drum steam inlet, and superheat section steam inlet connects with drum steam (vapor) outlet；Superheated steam outlet respectively with coal gas Change stove 10 once activation shower nozzle 14 connect with the re-activation shower nozzle 15 of coal gasifier 10, drum steam (vapor) outlet respectively with coal gas The once activation shower nozzle 14 changing stove 10 connects with the re-activation shower nozzle 15 of coal gasifier 10.

Specifically, useless pot 30 includes superheat section 31 and saturated section 32, and superheat section 31 and saturated section 32 are sequentially communicated at whirlwind The gas outlet of separator 20, the raw gas that the gas outlet of cyclone separator 20 flows out flows through the superheat section 31 of useless pot 30 successively With saturated section 32；Superheat section 31 is provided with superheat section steam inlet and superheated steam outlet, and saturated section 32 is provided with saturated section of liquid Body entrance and saturated vapor outlet；Drum 40 is provided with drum liquid outlet, drum steam (vapor) outlet and drum steam inlet；Saturated Saturated section of liquid inlet of section 32 and the drum liquid outlet of drum 40 are by pipeline communication, the saturated vapor outlet of saturated section 32 Pipeline communication, the superheat section steam inlet of superheat section 31 and the drum steam of drum 40 is passed through with the drum steam inlet of drum 40 Pipeline communication is passed through in outlet；Superheated steam outlet respectively with coal gasifier 10 once activation shower nozzle 14 and the two of coal gasifier 10 Secondary activation shower nozzle 15 connects, drum steam (vapor) outlet respectively with coal gasifier 10 once activation shower nozzle 14 and the two of coal gasifier 10 Secondary activation shower nozzle 15 connects.

When above-mentioned gasification system works, flow through the raw gas after cyclone separator 20 and be passed through the overheated of useless pot 30 successively In section 31 and saturated section 32, the water in drum 40 is passed through the full of useless pot 30 through drum liquid outlet and saturated section of liquid inlet successively With section 32, flow through raw gas and the water heat exchange in saturated section 32 of saturated section 32, it is thus achieved that saturated vapor；Saturated vapor is successively Being passed through in drum 40 through saturated vapor outlet and drum steam inlet, saturated vapor is successively through drum steam (vapor) outlet and superheat section Steam inlet is passed through in superheat section 31, and saturated vapor can also lead to once activation shower nozzle 14 and secondary through drum steam (vapor) outlet In activation shower nozzle 15；The saturated vapor being passed through in superheat section 31 and the raw gas heat exchange flowing through superheat section 31, it is thus achieved that superheated water Steam；Superheated vapour respectively leads to once activate shower nozzle 14 or/and in re-activation shower nozzle 15 through superheated steam outlet, with by The drum steam (vapor) outlet of drum 40 leads to once the saturated vapor mixing in activation shower nozzle 14 and re-activation shower nozzle 15, passes through Flow velocity and the flow velocity of superheated vapour of the once saturated vapor of activation shower nozzle 14 is led in regulation respectively, can regulate and once live Change flow velocity and the temperature of an activated gas of shower nozzle 14 ejection, led to the saturation water of re-activation shower nozzle 15 by regulation respectively The flow velocity of steam and the flow velocity of superheated vapour, can regulate re-activation shower nozzle 15 ejection re-activation gas flow velocity and Temperature.

Flow through the raw gas after cyclone separator 20 to be passed through successively in superheat section 31 and saturated section 32, and successively with superheat section Water vapour in 31 and the water heat exchange in saturated section 32, after raw gas flows through useless pot 30, the temperature of raw gas is by 700 DEG C～900 DEG C being down to about 400 DEG C, then the gas exit through useless pot 30 is passed through in raw gas after-treatment device 60, and raw gas post processing fills Put 60 and can include combustion gas collection device, oil product extraction element etc..

Useless pot 30 and the setting of drum 40, utilize the heat of raw gas to obtain the water vapour of different grade, and water vapour is permissible As the unstrpped gas of an activated gas, and the unstrpped gas of re-activation gas, it is also possible to using it for anything else, such as, supply Warm, generating etc., thus decrease the energy waste in gasification system.

It addition, useless pot 30 and the setting of drum 40, the heat of raw gas is utilized to obtain the water vapour of different grade, water vapour As the unstrpped gas of an activated gas, and the unstrpped gas of re-activation gas, it is possible to reduce it is used for preparing water vapour The setting of equipment, thus reduce the complexity of gasification system.

In above-described embodiment, drum 40 can arrange two drum steam (vapor) outlets, a drum steam (vapor) outlet is with overheated Section 31 superheat section steam inlet connection, another drum steam (vapor) outlet respectively with once activate shower nozzle 14 and re-activation shower nozzle 15 connections.

It is noted that in the above-described embodiments, activation shower nozzle 14 is led to once by regulation respectively or/and secondary is lived Change superheated vapour and the mixed proportion of saturated vapor of shower nozzle 15, once activate shower nozzle for example, it is possible to regulate to lead to respectively The superheated vapour of 14 and the flow velocity of saturated vapor, or/and, the superheated vapour of re-activation shower nozzle 15 is led in regulation respectively With the flow velocity of saturated vapor, to obtain the water vapour with different temperatures, adjust the once activation gas being passed through in region of activation 12 The temperature of body and the temperature of re-activation gas, and then adjust temperature and the temperature of re-activation reaction of a priming reaction, So that the temperature of the temperature of a priming reaction and re-activation reaction is within the scope of suitable temperature, such as, make once The temperature of priming reaction is in the range of 700 DEG C～900 DEG C, if the temperature of a priming reaction is 700 DEG C, or, 800 DEG C, or, 900 DEG C；The temperature making re-activation react is in the range of 600 DEG C～850 DEG C, such as re-activation reaction temperature It is 600 DEG C, or, 700 DEG C, or, 850 DEG C.

Please continue to refer to Fig. 2, the gasification system that the embodiment of the present invention provides also includes cooling tank 50, cooling tank 50 and coal The activated coke feed opening 18 of gasification furnace 10 connects.Activated coke intermediate contacts also with re-activation gas in the bottom of region of activation 12 Re-activation reaction occurring, generates activated coke, activated coke is in activated coke feed opening 18 is passed through cooling tank 50, in cooling tank 50 Cooled, make the temperature of activated coke decline, in order to the collection of activated coke, the activated coke of collection can be to go out after packaging Sell, or, the activated coke of collection can also use on the spot, and such as, the activated coke of collection is passed through water treatment facilities, flue gas desulfurization dress Put, sewage, flue gas etc. are processed, to reduce environmental pollution.The setting of cooling tank 50, discharges by coal gasifier 10 Activated coke cool down, activated coke is collected and post processing to facilitate.

It is worthy of note, cooling tank 50 and activated coke feed opening 18 can pass through pipeline communication, and activated coke is by activated coke Feed opening 18, when pipeline is passed through cooling tank 50, causes the blocking of pipeline for preventing activated coke from sticking on the inwall of pipeline, Can arrange inflatable mouth in pipeline, inflatable mouth can be passed through nitrogen, blows out nitrogen by inflatable mouth, to prevent activated coke from adhering to On the inwall of pipeline, thus prevent the blocking of pipeline.

Referring to Fig. 3, the embodiment of the present invention also provides for the preparation method of a kind of activated coke, and being applied to above-described embodiment provides Gasification system in, including:

Step 100, raw coal, in the gasification zone generating gasification reaction of coal gasifier, generate semicoke；

Step 200, semicoke occur once activation anti-with an activated gas of the once activation shower nozzle ejection of coal gasifier Should, generate activated coke intermediate；

Step 300, activated coke intermediate occur two with the re-activation gas of the re-activation shower nozzle ejection of coal gasifier Secondary priming reaction, generates activated coke.

For example, there is hydrogasification reaction in raw coal, the gasification zone of coal gasifier is with existing in the gasification zone of coal gasifier There is the furnace chamber of coal hydrogenation gasification stove in technology to be similar to, during preparation activated coke, can first open nozzle, once activation shower nozzle and secondary Activation shower nozzle, after nozzle is opened, raw coal and gasifying agent are passed through in the gasification zone of coal gasifier simultaneously, and gasifying agent includes hydrogen and oxygen Gas, raw coal contacts with gasifying agent and occurs hydrogasification to react, and generates raw gas and semicoke, raw coal and gasifying agent generation hydrogenation Temperature when changing reaction can be 850 DEG C～1000 DEG C, and pressure can be 5MPa～10MPa；Raw gas and semicoke are through coal gasification Communicating passage in stove is passed through in region of activation by gasification zone, and semicoke occurs one with an activated gas of once activation shower nozzle ejection Secondary priming reaction, generates activated coke intermediate, and an activated gas can be water vapour, and semicoke and an activated gas occur one Temperature during secondary priming reaction can be 700 DEG C～900 DEG C；The re-activation that activated coke intermediate sprays with re-activation shower nozzle Gas generation re-activation reacts, and generates activated coke, and re-activation gas can be that carbon dioxide, water vapour and noble gas are mixed Closing the mixed gas formed, the temperature that activated coke intermediate reacts with re-activation gas generation re-activation can be 600 DEG C ～850 DEG C.

Or, raw coal occurs in pyrolytic reaction, the gasification zone of coal gasifier and prior art in the gasification zone of coal gasifier The furnace chamber of coal heat decomposition stove be similar to, preparation activated coke time, can first open material inlet, gasification agent inlet, once activation shower nozzle and After re-activation shower nozzle, material inlet and gasification agent inlet are opened, raw coal and thermal medium are passed through the gasification zone of coal gasifier simultaneously In, thermal medium can be noble gas such as nitrogen, or, the mixing that noble gas and fuel gas such as flue gas is mixed to form Gas, raw coal contacts with thermal medium, and raw coal occurs pyrolytic reaction in gasification zone, generates raw gas and semicoke, and raw coal occurs heat Temperature when solving reaction can be 800 DEG C～1000 DEG C；Raw gas and the semicoke communicating passage in coal gasifier is by gasification zone Being passed through in region of activation, there is a priming reaction with an activated gas of once activation shower nozzle ejection in semicoke, generates activated coke Intermediate, an activated gas can be water vapour, and temperature when semicoke and an activated gas priming reaction of generation can Think 700 DEG C～900 DEG C；The re-activation gas generation re-activation that activated coke intermediate and re-activation shower nozzle spray is anti- Should, generating activated coke, re-activation gas can be the mixed gas that carbon dioxide, water vapour and noble gas are mixed to form, The temperature that activated coke intermediate and re-activation gas generation re-activation react can be 600 DEG C～850 DEG C.

Each embodiment in this specification all uses the mode gone forward one by one to describe, identical similar portion between each embodiment Dividing and see mutually, what each embodiment stressed is the difference with other embodiments.Real especially for method For executing example, owing to it is substantially similar to device embodiment and system embodiment, so describing fairly simple, relevant part ginseng See that the part of device embodiment and system embodiment illustrates.

In the above-described embodiments, one time activated gas can be water vapour, after water vapour mixes with semicoke, enters in semicoke Row pore-creating, thus after semicoke and an activated gas occur a priming reaction, have abundant in the activated coke intermediate of generation Hole, in microcellular structure, for preparation activated coke provide condition.

Water vapour in activated gas is saturated vapor or superheated vapour, can improve water vapour logical in connection Volumetric fraction at the lower ending opening in road, such as, water vapour volumetric fraction at the lower ending opening of communicating passage Can reach more than 45%, at the lower ending opening of communicating passage, form high local concentrations water vapour district, make semicoke, raw gas and water Steam is fully contacted, thus improves the activation degree activating semicoke, and improves the cooling cooling down raw gas Effect.After water vapour cools down, the temperature of raw gas can be down to 700 DEG C～900 DEG C, and now, semicoke occurs with water vapour The temperature of priming reaction is also 700 DEG C～900 DEG C.

In above-described embodiment, re-activation gas can include carbon dioxide, water vapour and noble gas, in the middle of activated coke Body and the carbon dioxide in re-activation gas, water vapour and inert gas also mix, carbon dioxide to activated coke in the middle of Hole in body carries out reaming, i.e. carbon dioxide makes the expansion of pores in activated coke intermediate, and water vapour is then in the middle of activated coke Internal carrying out pore-creating, to increase the quantity of the hole in the activated coke generated, noble gas is then used for the activated coke intermediate that loosens And activated coke, prevent activated coke intermediate and activated coke to be compacted in the bottom of region of activation 12, and then prevent activated coke intermediate Activation degree when activating produces harmful effect, and improves activated coke discharge convenience.Activated coke intermediate is lived with secondary The temperature of activating QI body generation re-activation reaction can be 600 DEG C～850 DEG C.

In re-activation gas, noble gas act as loose activated coke played in re-activation reacts, anti- Only activated coke is compacted in the bottom of region of activation 12, thus the volume fraction that noble gas is in re-activation gas can not be too high, Can not be too low, prevent the too high body causing carbon dioxide and water vapour of noble gas volume fraction in re-activation gas Fraction is relatively low, prevents from re-activation reaction is produced harmful effect, prevents noble gas simultaneously in re-activation gas Volume fraction is too low and causes noble gas poor to the loose effect of activated coke intermediate and activated coke, according to above-mentioned analysis, In re-activation gas, the volume fraction of noble gas can be 14.29%～15.38%, and noble gas can be argon, neon Gas, nitrogen etc., in embodiments of the present invention, noble gas is preferably nitrogen, is ensureing activated coke intermediate and activated coke While loose effect, it is also possible to reduce cost.

In re-activation gas, carbon dioxide makes the expansion of pores in activated coke intermediate, and water vapour is then in activated coke Carry out pore-creating, i.e. carbon dioxide and water vapour in intermediate and participate in re-activation reaction, and carbon dioxide work collaborative with water vapour Industry, the activated coke generated after making to activate activated coke intermediate has abundant hole.In order to improve in the middle of to activated coke Activation degree when body activates, i.e. in order to improve the quality of activated coke, the body that carbon dioxide is shared in re-activation gas Fraction should be more shared in re-activation gas than water vapour volume fraction low, and the volume ratio of carbon dioxide and water vapour Should be not too high, the most should be not too low, to prevent hypercapnia from causing water vapour to reduce, and then prevent the hole quantity of activated coke Reduce, prevent carbon dioxide very few simultaneously and cause water vapour to increase, and then prevent the hole of activated coke intermediate not by fully Expanding and cause the waste of water vapour, the volume ratio according to above-mentioned analysis, re-activation carbon dioxide in gas and water vapour can Think 1:5～3:8, in this range, under the synergism of carbon dioxide and water vapour, improve activated coke intermediate is entered Activation degree during row activation, makes the quantity of the hole of activated coke increase, improves the quality of activated coke.

According to above-mentioned analysis, in re-activation gas, the volume ratio of carbon dioxide, water vapour and noble gas can be 1:5:1～3:8:2, such as, the volume ratio of carbon dioxide, water vapour and noble gas can be 1:5:1, or, water vapour and The volume ratio of noble gas can also be 2:6:1, or, the volume ratio of water vapour and noble gas can also be 3:8:2.Dioxy Change carbon, the volume ratio of water vapour and noble gas is 1:5:1～3:8:2, can improve when activating activated coke intermediate Activation degree, improves the quality of activated coke, improves the loose effect to activated coke intermediate and activated coke simultaneously, facilitate activated coke Discharge.

In above-described embodiment, the water vapour in an activated gas and re-activation gas can be provided by external equipment. In embodiments of the present invention, the water vapour in an activated gas and re-activation gas can utilize the heat of raw gas to obtain Take, such as, raw gas is exported by the raw gas of coal gasifier after drawing, be passed through in useless pot, collaborative by useless pot and drum Effect, can obtain the water vapour with different grade, and the water vapour utilizing the heat of raw gas to obtain then can be as once Activated gas and the unstrpped gas of re-activation gas.

When activated coke intermediate reacts with re-activation gas generation re-activation, activated coke intermediate and re-activation gas The mass ratio of body is not more than 1:1, and now, activated coke intermediate can be fully contacted with re-activation gas and mix, and secondary is lived Carbon dioxide and water vapour in activating QI body are full of in the hole of activated coke intermediate, enter with the hole to activated coke intermediate Row expands and carries out pore-creating on activated coke intermediate, to improve activation effect when activating activated coke intermediate, increases Add the hole quantity of activated coke, and then improve the quality of activated coke.

In above-described embodiment, when raw gas is exported extraction by the raw gas of coal gasifier, raw gas may be mingled with Amount of activated burnt intermediate, thus can first be passed through cyclonic separation by being exported, by the raw gas of coal gasifier, the raw gas drawn Device, cyclone separator will be mixed in activated coke intermediate in raw gas and separate, and then will separate from raw gas Activated coke intermediate is passed through in region of activation by the separating feed mouth of coal gasifier, in the middle of the activated coke separated from raw gas Body mixes with the activated coke intermediate in region of activation, and reacts with re-activation gas generation re-activation, generates activated coke.

In embodiments of the present invention, the activated coke feed opening of coal gasifier connects with cooling tank, and the preparation of activated coke completes After, the activated coke in region of activation is passed through in cooling tank through activated coke feed opening, after activated coke is cooled in cooling tank, discharges cold But tank, it is achieved the collection of activated coke.

In the description of above-mentioned embodiment, specific features, structure, material or feature can be at any one or many Individual embodiment or example combine in an appropriate manner.

The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.

Claims

1. a coal gasifier, it is characterised in that include that gasification zone, region of activation and communicating passage, described region of activation are positioned at described The lower section of gasification zone, the upper end open of described communicating passage connects with described gasification zone, the lower ending opening of described communicating passage with Described region of activation connects；Once activation shower nozzle and re-activation shower nozzle, described re-activation shower nozzle it is provided with in described region of activation The lower section of shower nozzle is once activated described in being positioned at；

Raw coal is passed through described activation at semicoke and the raw gas of the reaction generation of described gasification zone generating gasification through described communicating passage District；There is a priming reaction with an activated gas of described once activation shower nozzle ejection in semicoke, generates activated coke intermediate； The re-activation gas generation re-activation that activated coke intermediate and described re-activation shower nozzle spray reacts, and generates activated coke.

Coal gasifier the most according to claim 1, it is characterised in that described communicating passage is the bottle that middle part is thin, two ends are thick Neck-shaped communicating passage.

Coal gasifier the most according to claim 2, it is characterised in that be provided with raw gas on the furnace wall of described region of activation and go out Mouthful；The lower ending opening of described communicating passage stretches in described region of activation, and the lower ending opening of described communicating passage be positioned at described slightly The lower section of gas exit.

Coal gasifier the most according to claim 1, it is characterised in that described once activation shower nozzle is positioned at described communicating passage The lower section of lower ending opening, the described injection direction lower ending opening towards described communicating passage once activating shower nozzle, and described Once an activated gas of activation shower nozzle ejection covers the lower ending opening of described communicating passage.

Coal gasifier the most according to claim 4, it is characterised in that described once activation shower nozzle and described communicating passage There is between lower ending opening spacing.

Coal gasifier the most according to claim 1, it is characterised in that described re-activation shower nozzle is ventilation cone is described logical Gas coning is arranged on the bottom of described region of activation, towards at the bottom of described region of activation, and the cone of described ventilation cone at the bottom of the cone of described ventilation cone The furnace wall laminating of edge and described region of activation；The vertex of a cone of described ventilation cone is provided with activated coke feed opening.

Coal gasifier the most according to claim 6, it is characterised in that the folder between the conical surface and the horizontal plane of described ventilation cone Angle is more than the angle of repose of activated coke.

Coal gasifier the most according to claim 1, it is characterised in that be additionally provided with on the furnace wall of described region of activation separate into Material mouth, described separating feed mouth once activates between shower nozzle and described re-activation shower nozzle described.

Coal gasifier the most according to claim 1, it is characterised in that be provided with level gauging dress on described coal gasifier Putting, described apparatus for measuring charge level is for measuring the height that activated coke intermediate is piled up in the bottom of described region of activation.

10. a gasification system, it is characterised in that include coal gasifier as described in claim 1-9 is arbitrary.

11. gasification systems according to claim 10, it is characterised in that described gasification system also includes cyclonic separation The raw gas outlet of device, the gas access of described cyclone separator and described coal gasifier, consolidating of described cyclone separator Body outlet connects with the separating feed mouth of described coal gasifier.

12. gasification systems according to claim 11, it is characterised in that described gasification system also includes useless pot and vapour Bag, wherein,

Described useless pot includes being sequentially communicated the superheat section of gas outlet of described cyclone separator and saturated section, described superheat section Being provided with superheat section steam inlet and superheated steam outlet, described saturated section is provided with saturated section of liquid inlet and saturated vapor goes out Mouthful；

Described drum is provided with drum liquid outlet, drum steam (vapor) outlet and drum steam inlet；

Described saturated section of liquid inlet connects with described drum liquid outlet, and the outlet of described saturated vapor enters with described drum steam Mouth connection, described superheat section steam inlet connects with described drum steam (vapor) outlet；

The outlet of described superheated steam respectively with the once activation shower nozzle and the re-activation of described coal gasifier of described coal gasifier Shower nozzle connects, described drum steam (vapor) outlet respectively with the once activation shower nozzle and the secondary of described coal gasifier of described coal gasifier Activation shower nozzle connection.

13. gasification systems according to claim 10, it is characterised in that described gasification system also includes cooling tank, Described cooling tank connects with the activated coke feed opening of described coal gasifier.

The preparation method of 14. 1 kinds of activated coke, it is characterised in that including:

There is a priming reaction with an activated gas of the once activation shower nozzle ejection of described coal gasifier in semicoke, generates and live Property Jiao's intermediate；

The re-activation gas generation re-activation that activated coke intermediate and the re-activation shower nozzle of described coal gasifier spray is anti- Should, generate activated coke.

The preparation method of 15. activated coke according to claim 14 a, it is characterised in that activated gas is water vapour, And the water vapour in an activated gas is saturated vapor or superheated vapour.

The preparation method of 16. activated coke according to claim 14, it is characterised in that re-activation gas includes titanium dioxide Carbon, water vapour and noble gas, the volume ratio of carbon dioxide, water vapour and noble gas is 1:5:1～3:8:2.

The preparation method of 17. activated coke according to claim 14, it is characterised in that activated coke intermediate and re-activation The mass ratio of gas is not more than 1:1.