CN104004533A - Granule shale gas heat carrier destructive distillation technology - Google Patents
Granule shale gas heat carrier destructive distillation technology Download PDFInfo
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- CN104004533A CN104004533A CN201410271613.9A CN201410271613A CN104004533A CN 104004533 A CN104004533 A CN 104004533A CN 201410271613 A CN201410271613 A CN 201410271613A CN 104004533 A CN104004533 A CN 104004533A
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Abstract
The invention discloses a granule shale gas heat carrier destructive distillation technology. The technology comprises the steps of raw ore treatment, dry air classification, destructive distillation oil refining, product recovery and incineration heat obtaining. The heat recovery technological measures such as dry air classification and incineration heat obtaining are added, heat generated by burning oil shale semicoke is thoroughly recovered and applied to the whole process of destructive distillation heat consumption, heat efficiency is greatly improved, production cost is reduced, and the granule shale gas heat carrier destructive distillation technology is made to mature. The technological shortage of low heat efficiency is effectively overcome, output is larger than cost, benefits can be obtained through industrialization, the novel destructive distillation technology is developed, and the use ratio of resources is greatly increased.
Description
One, technical field
The invention belongs to distillation process technical field, be specifically related to a kind of small-particle shale gaseous heat-carrier distillation process, this technique can be utilized the granule wax shale low-temperature pyrolysis liquefaction below gaseous heat-carrier technical finesse 12mm.
Two, background technology
In resinous shale low-temperature pyrolysis technology, it is much bigger that the complexity of granule wax shale destructive distillation technological development difficulty and technique is compared block shale retorting technology.Existing granule wax shale destructive distillation technology is all solid thermal carriers retorting technique in the world at present, there is no the small-particle gaseous heat-carrier retorting technique of mature industry application, and its reason is that this process heat efficiency is low, and production cost is high.
Three, summary of the invention
The object of this invention is to provide a kind of thermo-efficiency high, the small-particle shale gaseous heat-carrier distillation process that production cost is low.
For achieving the above object, the technical solution used in the present invention is: this technique comprises the steps:
1. raw ore processing: the small-particle shale that the mine shale of 0mm-20mm is treated to 0mm-12mm through crushing and screening;
2. dry selection by winnowing: by step 1. gained small-particle shale send into dry aidr bells blast system and pass into hot flue gas, sieve, dry and selection by winnowing processing; Hot flue gas after cooling is discharged from chimney after desulphurization denitration; The powder shale of selection by winnowing 0mm-1mm is out sent into semicoke incineration stove;
3. destructive distillation oil refining: by step 2. the small-particle shale of 80 DEG C-100 DEG C of selection by winnowing gained, 1mm-12mm send into gas retort, at 550 DEG C of temperature, complete destructive distillation, obtain destructive distillation gas, shale oil and shale semicockes destructive distillation product;
4. product reclaims: by step 3. gained destructive distillation gas and shale oil catch through revolving that Oil Recovery is carried out in tower, indirect cool tower, oil-absorption tower and low temperature electric fishing and destructive distillation gas purifies successively, gained oil product is sent into oil tank; Catch out the pure destructive distillation gas of low temperature coming after gas exhaust blower pressurization from low temp. electric, a road is sent into recuperative heater combustion chamber with outer afterburning tile kilning together with this and is burnt after gas desulfurization; Another road is sent into the heat exchange to 680 DEG C of recuperative heater regenerator and is entered gas retort; Shale semicockes are sent into semicoke incineration stove;
5. burn heat-obtaining: the powder shale that enters shale semicockes in semicoke incineration stove and 0mm-1mm burns and generates 800-900 DEG C of shale lime-ash in stove, and releases and send 800-900 DEG C of hot flue gas; Wherein hot flue gas through fly-ash separator dedusting and enter after interchanger heat exchange, is sent to dry aidr bells blast system; Shale lime-ash enters after cold slag machine and air blower are sent Yi road air heat-exchange and discharges through deslagging belt, air after heat exchange is point two-way after fly-ash separator dedusting, recuperative heater combustion chamber is sent into as burning wind in one tunnel, and dry aidr bells blast system is also sent to as hot flue gas in another road; Another road air that air blower is sent through with interchanger heat exchange after, enter semicoke incineration stove as burning wind.
The present invention includes raw ore processing, dry selection by winnowing, destructive distillation oil refining, product recovery and burn heating picking process step, tool has the following advantages:
1, the heat exchange that in technique, multilevel obtains calorific value and the storeroom of raw material and byproduct, makes full use of the heat treated oil shale of self in production equipment and obtains product.Wherein dry selection by winnowing process, burning heat-obtaining process and recuperative heater all embody the multiple utilization of energy for burning wind process.The mode of two burnings is sent in its recuperative heater employing two, has ensured heat supply stationarity.Its recovery system adopts without water washing process, replaces and washing with oil wash, and the thermal load in recovery system is reduced greatly, has adopted the equipment such as indirect cool tower and electric fishing tower to reach the effect of high-efficient energy-saving environment friendly.
2, burning combustion material in heat-obtaining process is shale semicockes after destructive distillation and the powder shale of the dry 0mm-1mm out of selection by winnowing.Shale semicockes are discharged and are entered semicoke incineration stove by gas retort bottom, and while entering stove, temperature is about 500 DEG C, and incinerator makes full use of the sensible heat of semicoke band like this, greatly promotes combustion efficacy and thermo-efficiency.The high-temperature flue gas of its generation and high temperature air are all the thermal source supplies of selection by winnowing and process furnace.The energy that the sensible heat of this abundant recovery shale semicockes and the mode of latent heat have increased whole system utilizes effect.
3, in destructive distillation oil refining process, catch tower, indirect cool tower, oil-absorption tower and low temperature electric fishing through revolving successively through destructive distillation gained destructive distillation gas and shale oil, obtain shale oil product and pure gas.Passed through dust removal with machine successively, machinery is caught oil, oily spraying and dedusting, oil spray are received oil, oil, electric precipitation, electric fishing oil are received in cooling dedusting, cooling.Simultaneously in whole system, there is no gas and the direct contact process of water, water vapour is not introduced in gas, make the saturation ratio of gas in recovery system always in low state, the gas thermal load used of lowering the temperature is greatly reduced.The multi-level different physics removal process of recovery system process, and make it have efficient, energy-conservation distinguishing feature in low saturation state always.
In sum, technique of the present invention has increased dry selection by winnowing and has burned the energy recovery technique means such as heat-obtaining, the heat that oil shale semi-coke burning is produced reclaims fully, apply in the process of whole oil shale distillation heat dissipation, greatly improve thermo-efficiency, reduce production cost, granule wax shale gaseous heat-carrier retorting technique is moved to maturity.Effectively overcome the low technique bottleneck of thermo-efficiency, made output be greater than cost, made industrialization lucrative, developed a kind of brand-new distillation process, and greatly improved the utilization ratio of resource.
Four, brief description of the drawings
Fig. 1 is process flow sheet of the present invention.
Five, embodiment
As shown in the figure, mine tailing resinous shale granularity is 0mm～20mm, is treated as 0mm～12mm size range granule wax shale through crushing and screening.Be delivered to dry selection by winnowing system entry, enter dry aidr bells blast system and pass into hot flue gas.Dry aidr bells blast system is to utilize multilayer mechanical vibration mode, shale supplied materials is processed, whole system is totally-enclosed, in carrying out shale screening, pass into hot flue gas contacts with shale is reverse from bottom, it is dried, dust granules can be taken away again, whole system has screening, dry, three functions of selection by winnowing simultaneously.Shale is by 300 DEG C of hot flue gas heating, heats up, and removes the outer water of part, makes shale water ratio drop to 1% from 9%, and shale temperature is warming up to 80 DEG C～100 DEG C from envrionment temperature.Hot flue gas cool-down to 80 DEG C enters smoke stack emission after desulphurization denitration.0mm～1mm powder shale by selection by winnowing out, enters shale semicockes incinerator through powder pipeline, as a kind of fuel of incinerator simultaneously.The small-particle page of the remaining 1mm～12mm of selection by winnowing, temperature, at 80 DEG C～100 DEG C, is discharged at selection by winnowing drying plant outlet at bottom, enters gas retort via transfer roller.Shale in gas retort by thermal barrier gas heating, in the time that reaching 300 DEG C, temperature starts to occur dry distillation reactor, shale finally completes destructive distillation at 550 DEG C, product after shale retorting is destructive distillation gas, shale oil and shale semicockes, and destructive distillation gas is mainly made up of carbonic acid gas, carbon monoxide, methane, hydrogen, ethane, ethene, propane, propylene, butane, butylene.Shale oil is also gaseous state in the time of high temperature, and destructive distillation gas and shale oil gas are discharged from gas retort top, and remaining solid matter is that shale semicockes are discharged from gas retort bottom, and the shale semicockes of high temperature enter semicoke incineration stove in the time of 550 DEG C.(because the fixed carbon content in semicoke is very low, calorific value is low, in order to make incinerator stable burning, has taked the mode of high-temperature feeding, makes up the defect that shale semicockes calorific value is low).Form with bubbling bed in semicoke incineration stove is carried out fluidized bed combustion, discharges a large amount of 800～900 DEG C of hot flue gases, and hot flue gas enters interchanger after fly-ash separator, cools to 300 DEG C of left and right after heat exchange.The combustion air of incinerator is provided by an air blower, and this Fans is also supplied with cold slag machine air and warm sludge heat exchange simultaneously.From air blower out along separate routes, a road enters interchanger and hot flue gas heat exchange to air, and after heat exchange, temperature reaches 400 DEG C of left and right, enters semicoke incineration stove as burning wind, and another road directly enters cold slag machine.Shale semicockes fully become the shale lime-ash of 800～900 DEG C after burning in incinerator, then enter cold slag machine and the abundant heat exchange of air, and cooled shale lime-ash is through outside deslagging belt discharge system.Air is heated to 300 DEG C of left and right through cold slag machine, after going out cold slag machine, enter fly-ash separator, go out after fly-ash separator along separate routes, one tunnel enters recuperative heater combustion chamber, as the burning wind of process furnace, the flue gas of another road and semicoke incineration outlet of still interchanger 300 DEG C of left and right of low temperature out gathers, and sends into together the hot blast of the dry aidr bells blast system of shale as aidr bells blast system.Gas retort furnace roof outlet product be destructive distillation gas and shale oil and with a large amount of water vapour and dust temperature 150 DEG C of left and right, these destructive distillation products enter recovery system, first catch tower through overwinding, revolve that to catch tower be to reclaim oil droplet and large particle diameter dust by physical construction, then destructive distillation product enters indirect cool tower, the recirculated cooling water that indirect cool tower is supplied with by outside and destructive distillation gas indirect heat exchange, this cools to 40 DEG C of left and right to use Tahoua, by the most shale oil of condensation lowered temperature reclamation and water of condensation.The gas of low temperature enters oil-absorption tower afterwards, adopts washing oil spray in tower, utilizes the similar principle mixing further to reclaim the shale oil in gas.Gas go out oil-absorption tower laggard enter low temperature electric fishing tower, under the effect of tower internal electric field power, make part gas spirit pool under small droplets reclaims, simultaneously by 99% dust in gas together along with shale oil recovery gets off.Enter tank system in the oil product unification of revolving benefit tower, indirect cool tower, oil-absorption tower, the recovery of low temperature electric fishing tower.The destructive distillation gas of low temperature electric fishing tower after is out the low temperature gas after purifying, and temperature is still 40 DEG C, at this moment enters gas exhaust blower again and pressurizes, and temperature is warming up to 45 DEG C, and a point two-way is delivered to regenerator process furnace.One tunnel is through gas desulphurization system, removes the combustion chamber that hydrogen sulfide enters recuperative heater as fuel and burns, and a road directly enters the regenerator of recuperative heater, with the gitter brick heat exchange in regenerator, after heat exchange to 680 DEG C, enters gas retort.The fuel of process furnace is made up of two portions, the one, the gas that system is self-produced, after purification as fuel, the one, outer afterburning tile kilning this.The fuel of outer benefit gas when driving, postcombustion when the self-produced gas of system cannot be self-sufficient when also low as shale oil length.Fuel is equipped with the air of 300 DEG C and produces the high-temperature flue gas of 1000 DEG C of a large amount of left and right in combustion chambers burn, and these flue gases 120 DEG C of left and right that lower the temperature after regenerator and gitter brick heat exchange, discharge system from chimney.Above-mentioned whole process has completed resinous shale low-temperature pyrolysis refining, has obtained shale oil, and high efficiente callback system capacity, completed granule wax shale air heat and carried distillation process.
Claims (2)
1. a small-particle shale gaseous heat-carrier distillation process, comprises the steps:
1. raw ore processing: the small-particle shale that the mine shale of 0mm-20mm is treated to 0mm-12mm through crushing and screening;
2. dry selection by winnowing: by step 1. gained small-particle shale send into dry aidr bells blast system and pass into hot flue gas, sieve, dry and selection by winnowing processing; Hot flue gas after cooling is discharged from chimney after desulphurization denitration; The powder shale of selection by winnowing 0mm-1mm is out sent into semicoke incineration stove;
3. destructive distillation oil refining: by step 2. the small-particle shale of 80 DEG C-100 DEG C of selection by winnowing gained, 1mm-12mm send into gas retort, at 550 DEG C of temperature, complete destructive distillation, obtain destructive distillation gas, shale oil and shale semicockes destructive distillation product;
4. product reclaims: by step 3. gained destructive distillation gas and shale oil catch through revolving that Oil Recovery is carried out in tower, indirect cool tower, oil-absorption tower and low temperature electric fishing and destructive distillation gas purifies successively, gained oil product is sent into oil tank; Catch out the pure destructive distillation gas of low temperature coming after gas exhaust blower pressurization from low temp. electric, a road is sent into recuperative heater combustion chamber with outer afterburning tile kilning together with this and is burnt after gas desulfurization; Another road is sent into the heat exchange to 680 DEG C of recuperative heater regenerator and is entered gas retort; Shale semicockes are sent into semicoke incineration stove;
5. burn heat-obtaining: the powder shale that enters shale semicockes in semicoke incineration stove and 0mm-1mm burns and generates 800-900 DEG C of shale lime-ash in stove, and releases and send 800-900 DEG C of hot flue gas; Wherein hot flue gas through fly-ash separator dedusting and enter after interchanger heat exchange, is sent to dry aidr bells blast system; Shale lime-ash enters after cold slag machine and air blower are sent Yi road air heat-exchange and discharges through deslagging belt, air after heat exchange is point two-way after fly-ash separator dedusting, recuperative heater combustion chamber is sent into as burning wind in one tunnel, and dry aidr bells blast system is also sent to as hot flue gas in another road; Another road air that air blower is sent through with interchanger heat exchange after, enter semicoke incineration stove as burning wind.
2. a kind of small-particle shale gaseous heat-carrier distillation process according to claim 1, it is characterized in that: dry selection by winnowing is to be to utilize multilayer mechanical vibration mode, shale supplied materials is processed, whole system is totally-enclosed, in carrying out shale screening, pass into hot flue gas contacts with shale is reverse from bottom, it is dried, dust granules can be taken away again, whole system has screening, dry, three functions of selection by winnowing simultaneously.
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| CN104498071A (en) * | 2014-12-31 | 2015-04-08 | 北票北塔油页岩综合开发利用有限公司 | Heating method of heat storage intermittent heating furnace during oil shale retort oil refining |
| CN105567276A (en) * | 2015-11-30 | 2016-05-11 | 北京国电富通科技发展有限责任公司 | Oil shale/low-rank coal destructive distillation process and device |
| CN108504371A (en) * | 2018-03-29 | 2018-09-07 | 抚顺矿业集团有限责任公司工程技术研究中心 | A kind of waste tire recovery and treatment method based on shale retorting system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104498071A (en) * | 2014-12-31 | 2015-04-08 | 北票北塔油页岩综合开发利用有限公司 | Heating method of heat storage intermittent heating furnace during oil shale retort oil refining |
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| CN105567276B (en) * | 2015-11-30 | 2021-05-07 | 北京国电富通科技发展有限责任公司 | Oil shale/low-rank coal dry distillation process and device |
| CN108504371A (en) * | 2018-03-29 | 2018-09-07 | 抚顺矿业集团有限责任公司工程技术研究中心 | A kind of waste tire recovery and treatment method based on shale retorting system |
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