CN109595567A - The useless ammonia incinerator of high-purity and system - Google Patents
The useless ammonia incinerator of high-purity and system Download PDFInfo
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- CN109595567A CN109595567A CN201811507390.6A CN201811507390A CN109595567A CN 109595567 A CN109595567 A CN 109595567A CN 201811507390 A CN201811507390 A CN 201811507390A CN 109595567 A CN109595567 A CN 109595567A
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- Prior art keywords
- ammonia
- air inlet
- purity
- furnace body
- flame
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 316
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 157
- 238000002485 combustion reaction Methods 0.000 claims abstract description 46
- 238000009826 distribution Methods 0.000 claims abstract description 38
- 239000000446 fuel Substances 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 230000008901 benefit Effects 0.000 claims description 14
- 238000009792 diffusion process Methods 0.000 claims description 8
- 230000008602 contraction Effects 0.000 claims description 7
- 238000005338 heat storage Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000011214 refractory ceramic Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 206010022000 influenza Diseases 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 210000000867 larynx Anatomy 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 45
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 239000000779 smoke Substances 0.000 description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 14
- 239000003546 flue gas Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 206010020843 Hyperthermia Diseases 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 230000036031 hyperthermia Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000000908 ammonium hydroxide Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RZCJYMOBWVJQGV-UHFFFAOYSA-N 2-naphthyloxyacetic acid Chemical compound C1=CC=CC2=CC(OCC(=O)O)=CC=C21 RZCJYMOBWVJQGV-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100001143 noxa Toxicity 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
The present invention discloses a kind of high-purity and gives up ammonia incinerator and system, including furnace body, the furnace body are construed as including leading portion, middle section and back segment；It further include the combustor interface for being arranged in furnace body leading portion, wind-supplying mouth, ammonia pipe joint, the first air inlet distribution apparatus, the second air inlet distribution apparatus, exhanst gas outlet and temperature-detecting device and differential pressure measuring device；First air inlet distribution apparatus is connect by wind-supplying mouth with combustion air pipeline by ammonia pipe joint and ammonia piping connection, the second air inlet distribution apparatus；When fuel generates flame in burner hearth by the flame burner nozzle of the burner on combustor interface, the ammonia that ammonia pipeline introduces is distributed in flame outer rim full combustion by the first air inlet distribution apparatus, the combustion air for entering combustion-aid air pipe pass by the second air inlet distribution apparatus is axially sprayed to form gas wall in flame periphery.Through the invention, can in heating power burning process, make high-purity give up ammonia completely burned while, moreover it is possible to control the generation of nitrogen oxides.
Description
Technical field
The invention belongs to burning facility field, in particular to a kind of ammonia treatment that can be used in high-purity ammon production process giving up is burnt
Burn furnace and system.
Background technique
High-purity ammon is a kind of important Elementary Chemical Industry material, it is widely used in the works such as electronics, chemical industry, metallurgy, the energy
In research and production in terms of industry.Electronic grade high-purity ammonia purity requirement reaches 99.9999% (volume fraction).
High-purity ammon in process of production, not exclusively due to impurity separation, leads to 99.9% (volume fraction) of higher degree
Useless ammonia generate.It since ammonia is pernicious gas, not directly discharges, needs that it handle and then discharge again.Currently, logical
The processing mode often taken mainly has: 1) this strand of gas being drained into absorption tower and be only absorbed by the water, be processed into ammonium hydroxide, but due to its work
Skill is complicated, and equipment input cost is higher, ammonium hydroxide it is cheap etc., therefore recovery value is not high；2) incineration method is used, so that
Ammonia completely burned becomes harmless N2And H2Then O is discharged, but the burning point of ammonia is 651 DEG C, and ignition temperature is low, and ammonia burning is endless
Entirely, ignition temperature is excessively high, and excessive nitrogen oxides can be generated in combustion process.Therefore, how to control furnace temperature arranges nitrogen oxides
It puts not exceeded while ammonia being made to decompose an also always problem completely.
207422241 U of Chinese patent CN proposes a kind of ammonia-contaminated gas incinerator, but it is only applicable to containing a small amount of ammonia
Burned waste gas, the ammonia for not being suitable for purity is high burns, and fire box temperature is up to 1000~1300 DEG C, and needs big by incorporation
Amount air makes its exhaust gas temperature be down to 250 DEG C, this will bring very big energy waste, and reduce tail simply by Dilution air
The concentration of the nitrogen oxides of gas, nitrogen oxides excessive problem are not also solved at all in fact.
Summary of the invention
To solve the above problems, the present invention discloses a kind of professional incinerator and incineration system for being used for high-purity ammon gas disposal,
The high-purity ammonia that gives up can be kept complete in heating power burning process by giving up the improvement of ammonia and combustion air intake method to high-purity
While full burning, moreover it is possible to control the generation of nitrogen oxides.
The technical scheme is that
Scheme one: a kind of useless ammonia incinerator of high-purity, including furnace body, the furnace body are construed as including leading portion, middle section
And back segment；It further include the combustor interface for being arranged in furnace body leading portion, wind-supplying mouth, ammonia pipe joint, the first air inlet distribution apparatus
With the second air inlet distribution apparatus, it is arranged in the exhanst gas outlet of furnace body back segment, and the temperature detection for detecting temperature in burner hearth
Device and differential pressure measuring device for detecting pressure in the burner hearth；First air inlet distribution apparatus passes through ammonia pipe joint and ammonia
Piping connection, the second air inlet distribution apparatus are connect by wind-supplying mouth with combustion air pipeline；When combustor interface accesses burning dress
When the flame burner nozzle set generates flame in burner hearth, the ammonia that ammonia pipeline introduces is distributed in by the first air inlet distribution apparatus
Flame outer rim full combustion, the combustion air for being entered combustion-aid air pipe pass by the second air inlet distribution apparatus axially injection with
Flame periphery forms gas wall.
Preferably, the first air inlet distribution apparatus include a main header being connect with ammonia pipe joint and with it is total
Gas collecting tube connection and the multiple ammonia distribution units circumferentially distributed along inboard wall of furnace body；The ammonia distribution unit includes a Zhi Jiqi
Pipe and multiple ammonia injection pipes for connect with branch gas collecting tube, the injection direction face flame and end line of each ammonia injection pipe and
The outer edge contour line of its corresponding flame axial direction matches.The identical length and shape that are primarily referred to as are similar, length phase
When.
Preferably, the second air inlet distribution apparatus is constructed hollow form structure, and with one connect with wind-supplying mouth into
Port and multiple circumferentially distributed combustion air spray-holes.
Preferably, the second air inlet distribution apparatus also has a central through hole for being used to wear flame burner nozzle, described to help
Combustion air jet hole is circumferentially uniformly distributed centered on the central through hole.
Preferably, which further includes the firebreak for being arranged in furnace body back segment, and the firebreak is refractory ceramics storage
Hot body.
Preferably, the firebreak is the refractory honeycomb ceramic heat storage body that porosity is 40~45%.
Preferably, the differential pressure measuring device and the temperature-detecting device are arranged in after furnace body back segment firebreak.
Preferably, the furnace body middle section be constructed with one connect with furnace body leading portion contraction flow region, connect with furnace body back segment
Diffusion part and the throat between contraction flow region and diffusion part.
Preferably, the shell that there is the outer wall of the furnace body steel plate to roll, inner wall are equipped with refractory heat-insulating lining.
Scheme two: a kind of useless ammonia incineration system of high-purity, including burner, combustion air pipeline, ammonia pipeline, combustion
High-purity described in expects pipe road and scheme one is given up ammonia incinerator；The burner and the useless ammonia of the high-purity burn
The combustor interface of furnace connects；The connection of the feed inlet of the fuel conduit and burner；The combustion air pipeline is configured with
Mend wind blower and the first air intake control valve；The ammonia pipeline flowing has the second air intake control valve；The fuel conduit is configured with
Third air intake control valve.
The utility model has the advantages that
1) incinerator is passed through through ammonia point with being used cooperatively for wind air inlet distribution apparatus, ammonia is mended by ammonia distribution device
Cloth apparatus effect is distributed in the burning of flame outer rim, so that the segment set Flame outer rim of burning, combustion air is through mending wind air inlet point
Cloth apparatus is uniformly injected in flame periphery, provides sufficient oxygen to burn, and localized hyperthermia is limited in by the gas wall formed
Within gas wall, while guaranteeing ammonia full combustion, so that the localized high temperature regions in burner hearth effectively reduce, to reduce
NOXGeneration.
2) firebreak of high temperature resistant heat storage body structure is done at furnace body back segment, furnace temperature is kept to stablize, and complete without burning
NH3Molecule can also be burnt by firebreak, in addition, can also effectively stop propagation of flame to be burnt to furnace body exhanst gas outlet,
Avoid fire safety evaluating hidden danger.Further, temperature-detecting device and differential pressure measuring device are arranged after firebreak, it is accurate in real time
Temperature and pressure in burner hearth is monitored, and avoids directly contacting with combustion flame, the service life of extension detection device.
3) middle section of incinerator is designed as approximate Venturi tube structure, so that flue gas mixes herein with two strands of air-flows of combustion air
It closes more uniformly, guarantee, which flows through back segment firebreak remnants ammonia, can be burned completely, further such that the part in burner hearth is high
Temperature area effectively reduces, and reduces NOXGeneration.
4) by the way that pressure-measuring-point is arranged in furnace body, outfit differential pressure measuring device can be by benefit wind blower, Smoke
Machine is mended in the interlocked control setting furnace of wind air intake control valve door and differential pressure measuring device as negative pressure, on the one hand guarantees that mending air door beats
It is air draught state after opening, guarantees operational safety；Another aspect negative pressure does chain, relative energy-saving with smoke exhaust fan.By will be in furnace
Setting temperature point in vivo is equipped with temperature-detecting device, can be by fuel air control valve, benefit wind air inlet in burning
Control valve, ammonia air intake control valve door and temperature-detecting device carry out interlocked control, and furnace temperature is set in 950 DEG C ± 30 DEG C,
The excessively high amount of nitrogen oxides of furnace temperature is avoided to generate more, flue gas emission is not up to standard and the too low ammonia burning of furnace temperature is insufficient.
5) control valve of incineration system, blower, detection device and control device can be connected, realizes whole-course automation connection
Lock control, control is accurate, safe operation is stablized.And in incineration system, altar lamp is arranged in the burner of burner, guarantees in furnace
Safety；Heat exchanger pattern selects fin-tube type, is suitble to pass through heating of the flue gas to liquid medium in ammonia manufacturing process；Mend wind blower
It is frequency control with smoke exhaust fan, fan delivery can be changed according to duty requirements, and be able to achieve energy conservation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of high-purity waste gas combustion furnace as described in the examples；
Fig. 2 is the structural schematic diagram of high-purity burned waste gas system as described in the examples；
Fig. 3 is the structural schematic diagram as described in the examples for mending wind air inlet distributor；
Fig. 4 is the structural schematic diagram of ammonia air inlet distribution unit as described in the examples；
Fig. 5 is the sectional view of ammonia air inlet distributor as described in the examples；
Fig. 6 is the AA sectional view of high-purity waste gas combustion furnace as described in the examples；
Fig. 7 is theory of combustion schematic diagram in embodiment；
Attached drawing mark explanation: combustor interface 1, wind-supplying mouth 2, ammonia pipe joint 3, furnace body 4, furnace body leading portion 41, furnace body
Middle section 42, furnace body back segment 43, contraction flow region 421, diffusion part 422, throat 423, temperature transmitter interface 5, lifting lug 6, differential pressure transporting
Device interface 7, saddle support 9, incinerator 10, combustor 11, mends wind air inlet distributor 12, ammonia air inlet distributor at exhanst gas outlet 8
13, fuel air control valve 14, benefit wind air intake control valve door 15, ammonia air intake control valve door 16, benefit wind blower 17, firebreak
18, temperature transmitter 19, differential pressure transmitter 20, finned tube exchanger 21, smoke exhaust fan 22, flame burner nozzle 23, central through hole 24,
Combustion air spray-hole 25, air inlet 26, main header 27, branch gas collecting tube 28, ammonia injection pipe 29.
Specific embodiment
The present invention is proposed that a kind of high-purity is given up and ammonia incinerator and is given up the burning of ammonia incinerator using this high-purity
System, wherein high-purity gives up ammonia incinerator as a kind of useless ammonia incinerator of high-purity with special construction, sets for both ends
There is the approximate hollow tubular structure of end plate, outer wall is the shell that steel plate rolls, and inner wall is equipped with refractory heat-insulating lining.High-purity is useless
The furnace body of ammonia incinerator be configured to three before, during and after three sections, furnace body leading portion is equipped with combustor interface, wind-supplying mouth, ammonia connect
Mouthful, and wind air inlet distribution apparatus and ammonia air inlet distribution apparatus are mended, furnace body back segment is equipped with exhanst gas outlet.Further, high-purity
The furnace body back segment (i.e. close to smoke outlet) for spending useless ammonia incinerator is additionally provided with firebreak, and furnace body middle section is also structured to approximation
Venturi tube structure.It further, further include pressure-detecting device and temperature-detecting device.The useless ammonia incineration system of high-purity is mainly wrapped
Burner, incinerator, finned tube exchanger, smoke exhaust fan are included, burner connects the useless ammonia incinerator front end of high-purity
Combustor interface, finned tube exchanger connect the exhanst gas outlet of the useless ammonia incinerator other end of high-purity, smoke exhaust fan connecting fin
At the flue gas discharge opening of piece heat exchange of heat pipe.When in use, useless ammonia, combustion-supporting sky can be controlled by temperature, pressure in monitoring burner hearth
The input quantity of gas, fuel, the ammonia incinerator safe operation so that high-purity is given up, it is ensured that the useless ammonia of high-purity is burned out and guarantees tail
Gas qualified discharge.
In ammonia combustion process, the NO of generationXIt is broadly divided into three classes: fuel type (fuel NOX), heating power type (thermal
NOX) and momentary type (prompt NOX), wherein thermal NOXBe nitrogen in combustion process in air aoxidize at high temperature and
It generates.According to thermal NOXFormation mechanism: temperature is higher, NOXProduction quantity it is more；Air content increases (i.e. combustion-supporting than increasing
Add) ignition temperature on the one hand can be reduced, but also can oxygen content be increased, finally make NOXProduction quantity increase；Part is high
The presence meeting of temperature area is so that NOXBe significantly increased.Therefore, suitable combustion-supporting ratio is selected, controls reasonable ignition temperature, as far as possible
The presence for avoiding local high temperature zone is to reduce NOXThe key of production quantity.And according to long-term engineering experience and research, it is suitable to adjust
Combustion-supporting ratio, by ammonia burning temperature control 950 DEG C or so the most rationally.
According to flame temperature gradient distribution principle, flame outermost edge is the highest region of flame temperature；In addition ammonia fires
Burning itself can also generate a large amount of heat, so that localized hyperthermia occurs in the region of burning.Therefore, ammonia is passed through flame side by design
Edge burning, so that localized hyperthermia concentrates on flame periphery, and carrying out cooling with air to the outermost edge of flame is to effectively reduce
NOXA kind of approach generated.
The present invention is specifically described below with reference to specific embodiment and attached drawing.
It gives up ammonia incinerator (hereinafter referred to as incinerator) as shown in Figure 1, embodiment 1 discloses a kind of high-purity, the incinerator
The institute of end plate is equipped with like hollow tubular structure for both ends, mainly includes furnace body 4, the combustor interface 1 that is arranged on furnace body 4, benefit
Air port 2, ammonia pipe joint 3, temperature transmitter interface 5, differential pressure transmitter interface 7 and exhanst gas outlet 8, are arranged in furnace body 4
The benefit wind air inlet distributor 12 and ammonia air inlet distributor 13 in portion, and lifting lug 6 and saddle branch for holding up and supporting furnace body 4
Seat 9.Furnace body 4 is configured to furnace body leading portion 41, furnace body middle section 42 and furnace body back segment 43.Combustor interface 1 is arranged in furnace body leading portion
At 41 end plate, wind-supplying mouth 2 and ammonia pipe joint 3 are arranged on the furnace wall of furnace body leading portion 41, after exhanst gas outlet 8 arranges furnace body
At the end plate of section 43, temperature transmitter interface 5 and differential pressure transmitter interface 7 can be arranged in furnace body leading portion 41, middle section according to demand
42 or back segment 43.The outer wall of incinerator is the shell that steel plate rolls, and inboard wall of burner hearth makees refractory heat-insulating lining, and thermal insulation material is mainly
Castable, insulation thickness are about 250mm.
Wherein, it mends wind air inlet distributor 12 to be arranged at combustor interface 1, and is connect with wind-supplying mouth 2.In conjunction with Fig. 2 and Fig. 3
Shown, mending wind air inlet distributor 12 can be used hollow round pie design, has an air inlet 26 connecting with wind-supplying mouth 2 and is used for
The central through hole 24 of flame burner nozzle is worn, is offered around central through hole 24 multiple along its circumferential equally distributed combustion air spray
Perforation 25.Flame burner nozzle, which is accessed through combustor interface 1 and is arranged in by central through hole 24, mends wind air inlet distributor 12, i.e. benefit wind
Air inlet distributor 12 is in flame tail end.Flame tail end temperature is relatively low, and mending wind air inlet distributor 12 may be selected 15CrMoR carbon
Steel material production.
Wherein, ammonia air inlet distributor 13 include the main header 27 being connect with ammonia pipe joint 3 and it is multiple with it is total
The air inlet distribution unit that gas collecting tube 27 connects, multiple air inlet distribution units are circumferentially fixed in 41 inner wall of furnace body leading portion.Extremely in conjunction with Fig. 4
Shown in Fig. 6, air inlet distribution unit includes branch gas collecting tube 28 and multiple ammonia injection pipes 29, and branch gas collecting tube 28 and main header 27 connect
Lead to and axially arranged along boiler tube length direction, ammonia injection pipe 29 extends perpendicular to branch gas collecting tube 28 and to flame direction, will
Ammonia sprays to combustion flame.In the present embodiment, main header 27 is to be laid in the round tube of the inner wall of furnace body leading portion 41 and in ammonia
It is communicated therewith at pipe joint 3, branch gas collecting tube 28 circumferentially, it is long to be slightly larger than combustion flame along main header 27 for a segment length
The straight tube of degree simultaneously opens up multiple through-holes for being used to connect ammonia injection pipe 29, and ammonia injection pipe 29 is evenly distributed on branch gas collecting tube 28
On.As a preferred embodiment, the length of ammonia injection pipe 29 is not completely equivalent, the ammonia spray being distributed on same branch gas collecting tube 28
The corresponding flame outer edge contour line matching of the end line of pipe 29 is penetrated, so that the ammonia being sent into all is sent into burning fire just
The outer rim of flame carries out full combustion.Due to directly contacting with thermal-flame, high temperature resistant 310S is may be selected in ammonia air inlet distributor 13
Stainless steel production.
As shown in connection with fig. 7, ammonia is advanced by ammonia air inlet distributor 13 after ammonia pipe joint 3 is passed through incinerator
Enter main header 27, ammonia is sent into each branch gas collecting tube 28 by main header 27, then be evenly distributed to each ammonia injection pipe 29, most
Ammonia is sprayed to flame outer rim by ammonia injection pipe 29 afterwards, so that outer rim full combustion of the ammonia in flame.At this point, combustion-supporting sky
Gas enters the benefit wind air inlet distributor 12 in furnace body 4 from wind-supplying mouth 2, is sprayed by the combustion air mended on wind air inlet distributor 12
Multiply air-flow is sprayed in hole 25 into burner hearth, forms a circle gas wall with the flame periphery that flame burner nozzle generates, provides needed for burning
Oxygen simultaneously guarantees evenly distributing for oxygen, meanwhile, because the gas wall temperature that injection is formed is lower, to flame periphery partial cooling, by office
Portion's high temperature is limited in gas within the walls.As it can be seen that the two is used cooperatively, being on the one hand able to achieve ammonia can be in flame outer rim full combustion, separately
On the one hand localized hyperthermia can be limited within gas wall, reduces NOXGeneration.
As a preferred embodiment, furnace body middle section 42 uses the design of approximate Venturi tube structure, including connection furnace body leading portion
Contraction flow region 421, the diffusion part 422 that is connect with furnace body back segment and the throat 423 between contraction flow region and diffusion part.By
This as it can be seen that present invention application Venturi tube principle, furnace body middle section 42 is designed as venturi tube structure, when the flue gas stream of burning
When through the most narrow place of variable-diameter structure herein, since caliber herein reduces, flow velocity becomes faster, so that flue gas and two strands of air-flows of combustion air
More uniformly, when flue gas flows through variable-diameter structure herein, Venturi tube back (diffusion part) is generated due to Venturi effect for mixing
Low pressure has suction-operated, so that mixed flue gas is uniformly spread, so that guaranteeing to flow through back segment firebreak remnants ammonia can be by
Burning is complete.
The completely burned for guaranteeing useless ammonia is also the key that stove is effectively run, the longer meeting of ammonia residence time in burner hearth
So that ammonia burning is more complete, but also the volume of stove can be made to become larger, cost greatly increases.As a preferred embodiment, exist
Firebreak (a kind of high-temperature thermal storage body) is set in furnace, due to having higher temperature inside firebreak accumulation of heat, the NH3 not burnt divides
Son by firebreak also can combustion decomposition, to guarantee the completely burned of ammonia.Wherein, firebreak 18 is size and section of burner hearth
The refractory ceramics heat storage to match, porosity are about 40~45%.By heat storage body structure this in furnace, so that ammonia fills
Divided combustion.The temperature of firebreak 18 is maintained at 950 ± 30 DEG C, more than 651 DEG C of burning point of ammonia, the NH not burnt3Molecule passes through
Firebreak 18 can also burn.As it can be seen that firebreak is arranged in incinerator back segment in the present invention, on the one hand use porosity for 40~45%
Refractory ceramics heat storage so that also being fired completely when small gap of a small amount of imperfect combustion ammonia in logical firebreak
It burns, on the other hand, ceramics itself also have the advantages that property is stable simultaneously in fire resisting, stablize furnace temperature, in addition, can also effectively hinder
Gear propagation of flame is burnt to furnace body exhanst gas outlet, and the security risks such as fire are avoided.
Wherein, the temperature in burner hearth is measured by the temperature transmitter 19 that temperature transmitter interface 5 connects, is become by differential pressure
The differential pressure transmitter 20 for sending device interface 7 to connect measures the pressure change in burner hearth.It is observed in burner hearth by temperature transmitter 19
Temperature change, to carry out corresponding operation.Differential pressure transmitter 20 can be shown the observed pressure value in burner hearth with electrical signal pattern
In the display screen of control device, it will be set as negative pressure system in burner hearth, on the one hand guarantee that after wind-supplying mouth 2 is opened be air draught state,
There is no security risk, another aspect negative pressure does chain, relative energy-saving with smoke exhaust fan.
It should be noted that furnace body leading portion 41 is flame combustion section, the air-flow environment approximation venturi in furnace body middle section 42 is former
Reason, temperature and pressure fluctuation is larger, also relatively unstable, therefore, as a preferred embodiment, by 5 He of temperature transmitter interface
The setting of differential pressure transmitter interface 7 detects internal gas flow ring in furnace body back segment 43, by temperature transmitter 19 and differential pressure transmitter 20
The temperature and pressure value of the metastable burner hearth back segment in border keeps detected value also more accurate.In addition, by temperature transmitter 19 and poor
Pressure transmitter 20 is arranged in 18 downstream of firebreak, also can avoid detection device and is burned with direct flame contact, is used with extending
Service life.
As shown in connection with fig. 2, embodiment 2 discloses a kind of useless ammonia incineration system of high-purity, mainly includes described in embodiment 1
Incinerator 10 and combustor 11, fuel air pipeline, mend wind air inlet pipeline, ammonia air inlet pipeline, mend wind blower 17, gear
Wall with flues 18, finned tube exchanger 21 and smoke exhaust fan 22, fuel air pipeline be equipped with fuel air control valve 14, mend wind into
Air pipe, which is equipped with, to be mended wind air intake control valve door 15 and mends wind blower 17, and ammonia air inlet pipeline is equipped with ammonia air intake control valve door
16.Incinerator 10, combustor 11, finned tube exchanger 21 and smoke exhaust fan 22 are sequentially connected, the burning of fuel air piping connection
Machine 11 mends wind air inlet pipeline with ammonia air inlet pipeline and connects incinerator 10.
Specifically, combustor 11 connects the combustor interface 1 of 10 one end of incinerator, fuel air control valve 14 passes through pipe
Road connects the feed inlet of combustor 11, mends the wind-supplying mouth 2 that wind air intake control valve door 15 connects incinerator 10 by pipeline, mends wind wind
Wind air intake control valve door 15 is mended in the connection of machine 17, and ammonia air intake control valve door 16 is connect by the ammonia pipeline that pipeline connects incinerator 10
Mouth 3.21 hot-side channel of finned tube exchanger is separately connected the exhanst gas outlet 8 and smoke exhaust fan 22 of incinerator 10, finned tube heat exchange
The external cold medium source of 21 cold side channel of device, the external chimney of smoke exhaust fan 22.
Wherein, the disengaging both ends of the hot-side channel of finned tube exchanger 21 are separately connected 8 He of exhanst gas outlet of incinerator 10
Smoke exhaust fan 22.Since cold and hot side liquid medium is respectively gas and liquid, consider herein for heat exchanger type selecting performance, selection
Finned tube exchanger heat exchange property is best and cheap.Wherein, cold medium source can be ethylene glycol, isopropanol, according to ammonia
Manufacturing process flow needs preferred ethylene glycol.Preferably, cold side medium is circulatory mediator, is returned again after cooling down in process system
It is heated again in heat exchanger, to realize heat energy utilization.
Wherein, smoke exhaust fan 22 is air-introduced machine, preferably frequency control, and fan delivery may be implemented by variable frequency adjustment frequency
Adjusting.Wind blower 17 is mended it is also preferred that frequency control, can adjust air inflow according to process requirements.
Wherein, other burner replacements such as burner can also be used in combustor 11, but should be noted that burner therein
It is necessarily arranged to altar lamp, to guarantee that combustion process will not stop working.
As a preferred embodiment, which further includes control device (not illustrating in figure), all detection measurement controls
Signal and the equal access control apparatus of motor-driven valve gate control signal, and realize on the station of control device to each electric elements
Control.Specifically, temperature transmitter 19, differential pressure transmitter 20, ammonia air intake control valve door 16, mend wind air intake control valve door 15,
It mends wind blower 17, fuel air control valve 14 and smoke exhaust fan 22 and is connected to control device, realize and automatically control.Control dress
It sets and can be PLC control or DCS control, preferably PLC control.By control device to benefit wind blower 17, smoke exhaust fan 22, benefit wind
Air intake control valve door 15,20 interlocked control of differential pressure transmitter realize internal negative pressure operation；By control device to fuel air control
Valve 14 processed mends wind air intake control valve door 15, ammonia air intake control valve door 16,19 interlocked control of temperature transmitter, maintains furnace temperature
It is constant at 950 ± 30 DEG C, to avoid generating more because of the excessively high amount of nitrogen oxides of furnace temperature, flue gas emission is not up to standard or furnace temperature mistake
It is low, cause ammonia burning insufficient.
Based on the useless ammonia incineration system of above-mentioned high-purity, workflow is as follows:
It before starting, first checks whether each component connects correctly, check errorless rear and then burner hearth inside is purged, in order to avoid
The front furnace that is switched on interior residual last time remaining ammonia not being completely burned when stopping.Wind air intake control valve door is mended by opening
15, benefit wind blower 17, smoke exhaust fan 22 are passed through air into burner hearth, purge to inside, purge at least 3 hours, to guarantee
There is no the ammonias that may accumulate for burner hearth.
Successively opened smoke-discharging blower 22 mends wind air intake control valve door 15 and mends wind blower 17, the control set by DCS
Program is to mending wind blower 17, smoke exhaust fan 22, mending wind air intake control valve door 15,20 interlocked control of differential pressure transmitter, to two wind
Control is adjusted in the air quantity of machine, with realization -300Pa negative pressure.
Open combustor 11, open fuel air control valve 14 and be passed through fuel hydrogen, spark ignition freeze profile at
Flame, the temperature in burner hearth will be increased persistently at this time, the corresponding temperature that observation temperature transmitter 19 monitors, as burner hearth Nei Wenduda
When to about 500 DEG C, starts to be passed through cold medium in the cold side channel of finned tube exchanger 21, heat-exchanging component is avoided to be burned.
The corresponding temperature that temperature transmitter 19 monitors is observed, when temperature reaches about 800 DEG C in burner hearth, opens ammonia air inlet
Control valve 16 is passed through ammonia.Ammonia is come into full contact with by ammonia air inlet distributor 13 with flame, so that ammonia full combustion.
Ammonia burning can generate amount of heat, the fuel input for reducing combustor 11 be controlled by DCS system, but cannot
Allow fray-out of flame, in order to avoid have explosion danger.
By mend wind air intake control valve door 15 adjust mend wind air quantity, by mend wind air inlet distributor 12, air through mend wind into
Spray-hole on gas distributor 12 forms gas wall in flame outer rim, so that localized high temperature regions (about 1400~1500 DEG C) are limited in
Flame outer most edge is reduced in burner hearth because of the NO that localized hyperthermia generatesXGeneration.
Fuel air control valve 14 is controlled by PLC system, mends wind air intake control valve door 15, ammonia air intake control valve door
16,19 interlocked control of temperature transmitter maintains 950 DEG C ± 30 DEG C of fire box temperature, avoids fire box temperature excessively high.
The flue gas that useless ammonia burning generates flows through firebreak 18, and micro undecomposed ammonia is flowing through 18 mistake of firebreak in flue gas
It is decomposed completely in journey.
950 DEG C or so of high-temperature flue gas enters the hot-side channel of finned tube exchanger 21 through exhanst gas outlet 8, and heating flows through wing
The cold medium being passed through in the cold side channel of piece heat exchange of heat pipe 21, and the cold medium after heating can be used for other techniques and used, with
Realize waste heat recycling and reusing.
After finned tube exchanger 21 completes heat exchange, the flue gas after cooling enters chimney by smoke exhaust fan 22, finally
It is emitted into atmosphere.
It should be noted that since hydrogen content is bigger in ammonia, a large amount of vapor can be generated in stove combustion process, often
Baker to be carried out is needed after secondary parking, to ensure that burner hearth is not burned the condensation that generated humid air is generated because gradually cooling down
Aqueous corrosion.
One group of concrete application test case based on the useless ammonia incinerator of above-mentioned high-purity is given below:
Relevant parameter: useless ammonia concentration: 99.9%；Useless ammonia maximum throughput: 70kg/h；Auxiliary fuel: hydrogen；Circulation
Liquid: glycol water；Largest loop liquid measure: 30 tons/h；Glycol water is into temperature: 50 DEG C；
Opened smoke-discharging blower 22 and wind blower 17 is mended, fuel hydrogen is passed through in fuel machine 11 and point by purging after 3 hours
Fire, fire box temperature start to increase, and the temperature in burner hearth are observed by temperature transmitter 19, when temperature is increased to certain numerical value (about
500~600 DEG C) when, glycol circulation liquid is passed through into finned tube exchanger 21.
When detecting that temperature rises to 800 DEG C, ammonia air intake control valve door 16 is opened, starts to be passed through ammonia, and pass through DCS
Control system controls ammonia air intake control valve door 16, fuel air control valve 14 and mends wind air intake control valve door 15, adjusts ammonia
The ratio of gas, hydrogen, combustion air maintains 950 DEG C ± 30 DEG C of fire box temperature to burn, and in burning process, the flue gas of generation passes through
Firebreak 18 burns micro undecomposed ammonia completely, then about 100 DEG C are down to after finned tube exchanger 21, then passes through row
Cigarette blower 22 enters chimney direct emission.In the process, into the cold medium glycol circulation liquid of finned tube exchanger 21 by
50 DEG C are heated to 65 DEG C, can be used for the condensation purification of ammonia.
It should be understood that above-mentioned specific embodiment is the preferred embodiment of the present invention, the scope of the present invention is not limited to
The embodiment, all any changes done according to the present invention, comes under within protection scope of the present invention.
Claims (10)
- The ammonia incinerator 1. a kind of high-purity is given up, which is characterized in that including furnace body, the furnace body be construed as including leading portion, in Section and back segment；It further include the combustor interface for being arranged in furnace body leading portion, wind-supplying mouth, ammonia pipe joint, the first air inlet distribution dress It sets with the second air inlet distribution apparatus, is arranged in the exhanst gas outlet of furnace body back segment, and the temperature inspection for detecting temperature in burner hearth Survey device and the differential pressure measuring device for detecting pressure in the burner hearth；First air inlet distribution apparatus passes through ammonia pipe joint and ammonia Air pipe connection, the second air inlet distribution apparatus are connect by wind-supplying mouth with combustion air pipeline；It burns when combustor interface accesses When the flame burner nozzle of device generates flame in burner hearth, it is distributed by the ammonia that the first air inlet distribution apparatus introduces ammonia pipeline In flame outer rim full combustion, the combustion air entered combustion-aid air pipe pass by the second air inlet distribution apparatus axially injection with Gas wall is formed in flame periphery.
- The ammonia incinerator 2. high-purity as described in claim 1 is given up, which is characterized in that the first air inlet distribution apparatus includes It the main header that is connect with ammonia pipe joint and is connect with main header and the multiple ammonias circumferentially distributed along inboard wall of furnace body Distribution unit；Multiple ammonia injection pipes that the ammonia distribution unit includes branch gas collecting tube and connect with branch gas collecting tube, each ammonia The outer edge contour line of the corresponding flame axial direction of the injection direction face flame and end line of injection pipe matches.
- The ammonia incinerator 3. high-purity as described in claim 1 is given up, which is characterized in that the second air inlet distribution apparatus is by structure Hollow form structure is made, and there is an air inlet connecting with wind-supplying mouth and multiple circumferentially distributed combustion air spray-holes.
- The ammonia incinerator 4. high-purity as claimed in claim 3 is given up, which is characterized in that the second air inlet distribution apparatus also has Have one for wearing the central through hole of flame burner nozzle, the combustion air spray-hole is circumferential uniform centered on the central through hole Distribution.
- The ammonia incinerator 5. high-purity as described in claim 1 is given up, which is characterized in that further include the gear for being arranged in furnace body back segment Wall with flues, the firebreak are refractory ceramics heat storage.
- The ammonia incinerator 6. high-purity as claimed in claim 5 is given up, which is characterized in that the firebreak be porosity be 40~ 45% refractory honeycomb ceramic heat storage body.
- The ammonia incinerator 7. high-purity as claimed in claim 5 is given up, which is characterized in that the differential pressure measuring device and the temperature Degree detection device is arranged in after furnace body back segment firebreak.
- The ammonia incinerator 8. high-purity as described in claim 1 is given up, which is characterized in that the furnace body middle section is constructed with one The contraction flow region that is connect with furnace body leading portion, the diffusion part being connect with furnace body back segment and the larynx between contraction flow region and diffusion part Portion.
- The ammonia incinerator 9. high-purity as described in claim 1 is given up, which is characterized in that the outer wall of the furnace body has roll of steel plate The shell of system, inner wall are equipped with refractory heat-insulating lining.
- The ammonia incineration system 10. a kind of high-purity is given up, which is characterized in that including burner, combustion air pipeline, ammonia pipe The useless ammonia incinerator of road, fuel conduit and high-purity as claimed in any one of claims 1 to 9；The burner with The combustor interface connection of the useless ammonia incinerator of the high-purity；The connection of the feed inlet of the fuel conduit and burner；Institute Combustion air pipeline is stated configured with benefit wind blower and the first air intake control valve；The ammonia pipeline flowing has the second air inlet control Valve；The fuel conduit is configured with third air intake control valve.
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| CN201811507390.6A CN109595567B (en) | 2018-12-11 | 2018-12-11 | High-purity waste ammonia incinerator and system |
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| CN110440251A (en) * | 2019-08-12 | 2019-11-12 | 厦门大学 | A kind of control method and ammonia burner of ammonia burning |
| CN111637461A (en) * | 2020-06-08 | 2020-09-08 | 山东理工大学 | Combustor with beam waist type furnace structure |
| CN112797424A (en) * | 2020-12-23 | 2021-05-14 | 北京京仪自动化装备技术有限公司 | Method for treating semiconductor TiN process waste gas |
| CN113294779A (en) * | 2021-05-28 | 2021-08-24 | 华中科技大学 | High-temperature air combustion device for ammonia gas |
| CN113834064A (en) * | 2021-10-12 | 2021-12-24 | 中国矿业大学 | Ammonia gas burner |
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