CN108929721B - Three layers of the center air guide fixed bed inverting tar gasification furnace of gas supply - Google Patents
Three layers of the center air guide fixed bed inverting tar gasification furnace of gas supply Download PDFInfo
- Publication number
- CN108929721B CN108929721B CN201810748804.8A CN201810748804A CN108929721B CN 108929721 B CN108929721 B CN 108929721B CN 201810748804 A CN201810748804 A CN 201810748804A CN 108929721 B CN108929721 B CN 108929721B
- Authority
- CN
- China
- Prior art keywords
- heating
- gasifying agent
- gas
- agent distributor
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002309 gasification Methods 0.000 title claims abstract description 67
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 102
- 238000010438 heat treatment Methods 0.000 claims abstract description 99
- 239000003245 coal Substances 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000000571 coke Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 69
- 238000000197 pyrolysis Methods 0.000 claims description 56
- 239000003034 coal gas Substances 0.000 claims description 55
- 239000011269 tar Substances 0.000 claims description 47
- 230000009467 reduction Effects 0.000 claims description 14
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- 238000009826 distribution Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000002411 adverse Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000011280 coal tar Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 230000001717 pathogenic effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 2
- 238000003915 air pollution Methods 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000126 substance Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011285 coke tar Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
一种中心导气固定床三层供气自转化焦油气化炉，其气化剂分布器是在炉体内由第一加热气化剂分布器、第二加热气化剂分布器及第三加热气化剂分布器互通构成三层加热气化剂分布器，三层加热气化剂分布器之间的距离通过阻力调节，热解煤气和焦油向热解煤气下行通道运行，使焦油进行裂解和气化；本结构很好地解决了焦炉气化过程中所产生的焦油问题，缓解了由焦油带来的设备腐蚀、大气污染及废水难以处理等问题，大幅降低了设备成本，同时增加了气化强度，大大提高了气化性能，为煤气化技术发展提供了有力的支撑。
A central gas-conducting fixed bed three-layer self-transforming coke gasification furnace with gas supply, wherein the gasification agent distributor is heated by a first heating gasification agent distributor, a second heating gasification agent distributor and a third heating gasification agent in the furnace body. The gasification agent distributors communicate with each other to form three layers of heating and gasification agent distributors. The distance between the three layers of heating and gasification agent distributors is adjusted by resistance. This structure can well solve the problem of tar produced in the coke oven gasification process, alleviate the problems caused by tar, such as equipment corrosion, air pollution and difficult treatment of waste water, greatly reduce equipment costs, and increase gas The gasification strength is greatly improved, and the gasification performance is greatly improved, which provides a strong support for the development of coal gasification technology.
Description
Technical field
The present invention relates to a kind of fixed bed tar gasification furnace, three layers of especially a kind of fixed bed with center air guide gas supply
Inverting tar gasification furnace.
Background technique
Coal Gasification Technology is the core and leading technology of Chemical Industry, and realizes the key of coal high-efficiency clean utilization
One of technology is Development of Coal base chemicals production, Coal-based Liquid Fuel, synthetic natural gas, IGCC power generation, hydrogen manufacturing, industrial combustion gas
And the basis of the process industrials such as polygenerations systeme, the coal gasification method and its device category that the world is applying and developing at present are very
It is more, several typical ways such as fixed bed, fluidized bed and air flow bed, every kind of gasification side can be divided by its hybrid mode and motion state
Method has different requirements to the granularity of feed coal, cohesiveness, reactivity, ash fusion point and operating condition etc., while its thermal efficiency,
Efficiency of carbon con version, the intensity of gasification and coal gas composition also have apparent difference, and every kind of gasification furnace has certain limitation in the application；From
Comprehensively consider in terms of technical feasibility and economic rationality two, there is no be suitble to various feed coals, various coals in the world at present
Gas purposes and various production-scale " omnipotent " gasification furnaces.
There are three main problems in atmospheric fixed bed gas-producer: first is that due to being gasification with air in practical applications
Agent, so the N in its coal gas2Ratio is higher, and generally in 50-60%, calorific value of gas is lower, only 5.0-5.6MJ/m3Left and right belongs to
In low-heat value gas；Second is that the raw gas generated passes through destructive distillation layer before leaving gasification furnace, so that it contains a certain amount of coke
Oil and coal dust impurity, cause inconvenience to subsequent gas purification, processing, conveying and use；Third is that atmospheric fixed bed technology with
Lump coal is fuel, longer in residing time in furnace, although its charcoal percent conversion is higher, reaction speed is slower, in-furnace temperature and
The intensity of gasification is all lower, therefore single furnace production capacity is poor.
Exactly because these drawbacks greatly limit application of the technology on industrial furnace and further hair
The fixed bed gasification technology of suitable Small and Medium Enterprises in China is performed well in coal-fired industry furnace, generated without tar by exhibition
Combustion gas improves the key of calorific value of gas and the intensity of gasification as urgent problem to be solved.
Tar is the mostly undesired obtained product of people during producing combustible gas, its presence to gasification system and uses gas
Equipment all generates very detrimental effect, is mainly reflected in the following aspects:
First is that tar is gradually to condense out in transport process entrained by coal gas of high temperature, it is attached to inner wall of the pipe and has
On the wall surface for closing equipment, corrosive pipeline equipment is blocked, is threatened to the safe operation of system.
Second is that tar is that into the gas equipment of downstream, can influence work because of air-flow entrained drip etc. entrained by gasification gas
The safe operation of industry kiln burning device, internal combustion engine, gas turbine, compressor etc..
Third is that tar caused by gasifying accounts for about the 3-10% of coal for gasification gross energy, gasification is largely reduced
Efficiency, and tar is in low temperature and when one combust of combustible gas, it is difficult to burning completely, is also easy to produce carbon black etc., utilizes and sets to combustion gas
Standby damage is serious, while wasting the energy.
Fourth is that many substances have carcinogenesis in tar, if these substances are discharged into atmosphere, will result in tight
The environmental pollution of weight.
It can be seen that in gasification tar generation, not only waste part energy, but also have sizable
Harmfulness, therefore the high combustible gas of tar content be before use, purified treatment must be carried out, tar in removing or abatement combustible gas
Method mainly have two major classes: one kind is removed outside furnace, and another kind of is removing in furnace, and the outer removal methods of furnace mainly include hot tearing
Solution, catalytic pyrolysis, WATER-WASHING METHOD, filtration method, electric fishing method and mechanical method of trapping etc.；Though removing tar outside furnace can largely subtract
Tar content in few coal gas, but there are energy wastes, system complex is at high cost, and the disadvantages of easily cause secondary pollution, is not suitable for
The middle-size and small-size gasification furnace that China is more and disperses.
And in furnace removal method have focused largely on optimization gasification condition and bed material add suitable additive or catalyst, from
It improves gasification furnace structure to be also rarely reported to reduce the research of the original amount of gasifier tar, and is in laboratory research mostly
Stage closes if taking certain measure to improve the structure in gasification furnace by research, making coke tar cracking and gasification as far as possible
The Flow and heat flux in tissue furnace is managed to inhibit or reduce tar content, the high-efficiency cleaning conversion of coal is realized, solves in coal gas
The crucial problems such as tar content height, this undoubtedly can be such that the performance of China's fixed-bed gasification furnace greatly improves, to promote it in work
Extensive use and further development on industry stove.
Summary of the invention
The purpose of the present invention is increase by three layers of gas supply heating and gasifying agent distributor, close by improving gasification furnace internal structure
The Flow and heat flux in tissue furnace is managed, high-temperature region is formed, so that tar is cracked and is gasified in high-temperature region, to solve existing gasification furnace
The tar problem generated in gasification, and provide a kind of three layers of center air guide fixed bed gas supply inverting tar gasification furnace,
Realize the high-efficiency cleaning conversion of coal.
In order to solve the above technical problems, the present invention adopts the following technical scheme that.
A kind of inverting tar gasification furnace of three layers of center air guide fixed bed gas supply, including sealing coal feeder, furnace body, gasifying agent
Distributor, ash discharge structure and air supply system；It is characterized by:
The gasifying agent distributor is in furnace body by the first heating and gasifying agent distributor, the second heating and gasifying agent distributor
And third heating and gasifying agent distributor intercommunication constitutes three layers of heating and gasifying agent distributor；Between three layers of heating and gasifying agent distributor
Distance makes to be pyrolyzed coal gas and tar to pyrolysis coal gas down going channel operation, each section of resistance should meet: P1+P2+ by resistance regulation
P3+P4+P5+P6 < P4+P7, wherein P1 is the first heating and gasifying agent distributor top coal charge resistance, and P2 is the first heating and gasifying
Agent distributor top heat buoyancy, P3 180oResistance is lost in elbow, and P4 is the first heating and gasifying agent distributor lower part heat buoyancy, P5
It is pyrolyzed coal gas passage friction resistance, pipe resistance to flow output centered on P6 for middle part downlink, P7 is under the first heating and gasifying agent distributor
Portion's coal charge resistance；Three layers of heating and gasifying agent distributor make to sequentially form from top to bottom in furnace: drying layer, oxide layer, is done destructive distillation layer
Evaporate layer, oxide layer, reduction zone and oxide layer structure；
The first heating and gasifying agent distributor is that heater is inhaled in the adverse current for be located at upper of furnace body, equipped with the first heating gas
Agent distributor air supply pipe；The second heating and gasifying agent distributor is to be arranged on the inside of the furnace wall in the middle part of furnace body and be pyrolyzed coal gas
Heater is inhaled under fair current on the outside of down going channel, is furnished with the second heating and gasifying agent distributor air supply pipe；The third heating and gasifying
Agent distributor is to inhale heater in the adverse current for be arranged in furnace body center bottom, is tower gas distributor, and heat equipped with third
Gasifying agent distributor air supply pipe；
The furnace body center is equipped with a pyrolysis coal gas down going channel or is positioned against under a plurality of pyrolysis coal gas of furnace wall
Row of channels, and equipped with pyrolysis coal gas down going channel support steel structure, pyrolysis coal gas down going channel entrance is to be located at coal charge distribution grid
The the first destructive distillation layer center between heating and gasifying agent distributor and；The outlet of pyrolysis coal gas down going channel is located at the second heating and gasifying agent
Reduction zone center between distributor and third heating and gasifying agent distributor；The furnace body is close to furnace wall middle and lower part and is led equipped with coal gas
Outlet pipe, gas export control entrance be close to furnace wall and be located at the second heating and gasifying agent distributor and third heating and gasifying agent distributor it
Between reduction zone, gas export control outlet is close to furnace wall and is located at the first heating and gasifying agent distributor and the second heating and gasifying agent point
Destructive distillation layer between cloth device, and extend to outside furnace wall.
Three layers of the fixed bed inverting tar gasification furnace of gas supply of center air guide described in aforementioned present invention, it is characterised in that:
The inverting inverting method of tar gasifier tar of three layers of the center air guide fixed bed gas supply is that coal charge is added by sealing coal feeder
Enter in furnace, be uniformly distributed in furnace through coal charge distribution grid, then under the effect of gravity, coal charge first passes around the first heating and gasifying agent
Distributor, into the first heating zone for having the outlet of heating air feed, oxidation reaction occurs for the oxygen in the first heating zone and air feed, raw
At 500 DEG C of -800 DEG C of high temperature oxide layer areas, the burning hot gas flow direction of generation is upper and coal charge drives in the wrong direction and contacts, and coal charge heat absorption carries out heat
Solution and dry, formation pyrolytic layer and drying layer, the combustion heat air-flow cooled down, pyrolysis gas and dry gas are pyrolyzed at the top of furnace body
Coal gas back spatial mixing enters pyrolysis coal gas down going channel by being pyrolyzed coal gas down going channel entrance, from pyrolysis coal gas downlink
Channel outlet enters pyro-oxidation-reduction area, and tar is cleaved and gasifies；The coal charge thermally decomposed continues traveling downwardly pyrolysis, is pyrolyzed
Material, part downlink pyrolysis coal gas and its in tar when going downwards to the second heating and gasifying agent distributor, in the second oxidation
Area is warming up to 750-1100 DEG C and is partially oxidized, and enters reduction and gaseous area, coal/coke and heat after the pyrolysis of reduction and gaseous area
The tar that solution generates mostly occurs greatly gasification reaction, generates gasification gas, enters gas export control by gas export control entrance and pass through coal
Gas delivery line outlet discharges out of the furnace；There is no vaporized carbon residue to continue traveling downwardly third heating and gasifying agent in pyro-oxidation-reduction area
850-1200 DEG C of the high-temperature oxydation area on the top of distributor, in high-temperature oxydation area, carbon residue is oxidized burning, the high temperature ash under remaining
Enter ash discharge structure after the gasifying agent heat exchange of slag formation slag blanket, high-temperature ash and input is cooling, is gradually discharged.
By the implementation of aforementioned present invention technical solution, gasification furnace internal structure is optimized, makes coke tar cracking and gasification very
It solves the problems, such as generated tar in existing coal gasifier gasification well, alleviates by tar bring equipment burn into
Atmosphere pollution and waste water are difficult to the problems such as handling, further reduce tar trapping and separator, significantly reduce equipment at
This, while the intensity of gasification is increased, vaporized state is good in furnace, further improves gasification furnace performance, sends out for Coal Gasification Technology
Exhibition provides strong support.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this gasification furnace.
Fig. 2 is the hierarchical diagram of this gasification furnace.
Fig. 3 is the resistance diagram of this gasification furnace.
In figure: 1: sealing coal feeder；2: furnace body；3: coal charge distribution grid；4；Water-cooling sandwich；5: the first heating and gasifying agent distribution
Device；6: top heating gas downcomer；7: the second heating and gasifying agent distributors；8. gas export control entrance；9: third heating and gasifying
Agent distributor；10: gas exit；11: water leg water inlet；12: water leg water outlet；13: ash discharge structure；14: coal gas export
Pipe；15: third heating and gasifying agent distributor air supply pipe；16: the second heating and gasifying agent distributor air supply pipes；17: the first heating gas
Agent distributor air supply pipe；18: pyrolysis coal gas down going channel support steel structure；19: blast cap；20: the outlet of heating air feed；21: in
Subordinate's row is pyrolyzed gas passage；22: pyrolysis zone；23: gasification zone；24: pyrolysis coal gas down going channel；25: pyrolysis coal gas downlink is logical
Road entrance；26: the outlet of pyrolysis coal gas down going channel；27: cleaning air intake；28: exhaust outlet.
Specific embodiment
A specific embodiment of the invention is made further instructions with reference to the accompanying drawing.
As shown in Fig. 1, it is inverting to implement a kind of above-mentioned provided three layers of gas supply of fixed bed of center air guide of the present invention
The architecture implementation of tar gasification furnace, the gasification furnace is as follows:
A kind of inverting tar gasification furnace of three layers of center air guide fixed bed gas supply, including sealing coal feeder, furnace body, gasifying agent
Distributor, ash discharge structure are connected to composition with air supply system；Wherein:
Sealing coal feeder 1 is the series connection double-charging bell sealing coal feeder positioned at 2 top of furnace body, and is equipped with and cleans air intake 27
With exhaust outlet 28；Ash discharge structure 13 is located at the ash discharge lock construction of 2 bottom of furnace body.
Lower portion of furnace body is water leg, and design has water leg water inlet 11 and water leg water outlet 12, water leg water outlet 12
It is connected with drum；The center of furnace body 2 is equipped with a pyrolysis coal gas down going channel 24 or is positioned against a plurality of pyrolyzing coal of furnace wall
Gas down going channel, and equipped with pyrolysis coal gas down going channel support steel structure 18, pyrolysis coal gas down going channel entrance 25 is located at coal charge
Destructive distillation layer center between distribution grid 3 and the first heating and gasifying agent distributor 5, pyrolysis coal gas down going channel outlet 26 are located at second
Reduction zone center between heating and gasifying agent distributor 7 and third heating and gasifying agent distributor 9, the furnace body 2 are close to furnace wall
Middle and lower part is equipped with gas export control 14, and gas export control entrance 8 is close to furnace wall and is located at the second heating and gasifying agent distributor 7 and the
Reduction zone between three heating and gasifying agent distributors 9, gas export control outlet 10 are close to furnace wall and are located at the first heating and gasifying agent
Destructive distillation layer between distributor 5 and the second heating and gasifying agent distributor 7, and extend to outside furnace wall.
Gasifying agent distributor is heated by the first heating and gasifying agent distributor 5, the second heating and gasifying agent distributor 7 and third
Gasifying agent distributor 9 constitutes three layers of heating and gasifying agent distributor in furnace body 2, and the first heating and gasifying agent distributor 5 is located at furnace body 2
Top be heater is inhaled in adverse current, and be furnished with the first heating and gasifying agent distributor air supply pipe 17, the second heating and gasifying agent distribution
It is heater to be inhaled under fair current, and be furnished with the second heating and gasifying agent distributor air supply pipe that device 7, which is arranged on the inside of the furnace wall in the middle part of furnace body,
16, it is that heater is inhaled in adverse current that the bottom in furnace body center, which is arranged in, in third heating and gasifying agent distributor, is distributed for tower gas
Device, and it is furnished with third heating and gasifying agent distributor air supply pipe 15, the distance between three layers of heating and gasifying agent distributor passes through resistance
It adjusts, guarantees that pyrolysis coal gas and tar are run to pyrolysis coal gas down going channel 24, each section of resistance needs to meet: P1+P2+P3+P4+P5
+ P6 < P4+P7, wherein P1 is the first heating and gasifying agent distributor top coal charge resistance, and P2 is the first heating and gasifying agent distributor
Top heat buoyancy, P3 180oResistance is lost in elbow, and P4 is the first heating and gasifying agent distributor lower part heat buoyancy, and P5 is middle heat
Coal gas down going channel frictional resistance, pipe resistance to flow output centered on P6 are solved, P7 is the resistance of the first heating and gasifying agent distributor lower part coal charge
Power；As shown in Fig. 2, three layers of heating and gasifying agent distributor make to sequentially form from top to down in furnace: drying layer, destructive distillation layer, oxidation
Layer, destructive distillation layer, oxide layer, reduction zone and oxide layer structure.
A kind of specific reality for the inverting tar gasification furnace of three layers of center air guide fixed bed gas supply that aforementioned present invention is implemented
Existing method is as follows:
Coal charge is added in furnace by sealing coal feeder 1, is uniformly distributed in furnace through coal charge distribution grid 3, then in gravity
Under, coal charge first passes around the first heating and gasifying agent distributor 5, into the first heating zone for having heating air feed outlet 20, first
Oxidation reaction occurs for the oxygen in heating zone and air feed, generates 500 DEG C of -800 DEG C of high temperature oxide layer areas, the combustion heat air-flow of generation
It drives in the wrong direction and contacts with coal charge upwards, coal charge is pyrolyzed and is dried, and pyrolytic layer and drying layer, the burning hot gas cooled down are formed
Stream, pyrolysis gas and dry gas are pyrolyzed coal gas back spatial mixing at the top of furnace body, by being pyrolyzed coal gas down going channel entrance 25
Into pyrolysis coal gas down going channel 24, enter pyro-oxidation-reduction area from pyrolysis coal gas down going channel outlet 26, tar is cleaved
And gasification, the coal charge thermally decomposed continue traveling downwardly pyrolysis, the material that is pyrolyzed, part downlink pyrolysis coal gas and its in tar
When going downwards to the second heating and gasifying agent distributor 7,750-1100 DEG C is warming up in the second zoneofoxidation and is partially oxidized, and enter also
Former gasification zone, the tar that coal/coke and pyrolysis after the pyrolysis of reduction and gaseous area generate mostly occur greatly gasification reaction, generate and gasify
Gas enters gas export control 6 by gas export control entrance 8 and is discharged out of the furnace by gas export control outlet 10；High-temperature oxydation also
Former area do not have vaporized carbon residue continue traveling downwardly third heating and gasifying agent distributor 9 top high-temperature oxydation area 850-1200
DEG C, in high-temperature oxydation area, carbon residue is oxidized burning, and the high-temperature ash under remaining forms slag blanket, the gasifying agent of high-temperature ash and input
Enter ash discharge structure 13 after heat exchange is cooling, is gradually discharged.
It is gentle to improve retort section by increasing central airway and three layers of method for supplying heat gas distributors by the present invention
Change Duan Wendu, can make the tar in coal gas that cracking and gasification largely occur, it is bright to the content effect for reducing tar in coal gas
Aobvious, vaporized state is good in furnace, and tar content substantially reduces in discharged producer gas, and tar content is minimum in coal gas can reach 10mg/
Nm3, calorific value of gas is up to 6500KJ/Nm3, various burners and heating process requirement can be met completely, realize coal high temperature without coke
The feasibility that oil gasification is imagined.
Claims (1)
1. a kind of inverting tar gasification furnace of three layers of center air guide fixed bed gas supply, including sealing coal feeder, furnace body, gasifying agent point
Cloth device, ash discharge structure and air supply system；It is characterized by:
The gasifying agent distributor is to be distributed in furnace body (2) by the first heating and gasifying agent distributor (5), the second heating and gasifying agent
Device (7) and third heating and gasifying agent distributor (9) intercommunication constitute three layers of heating and gasifying agent distributor；Three layers of heating and gasifying agent distribution
The distance between device makes to be pyrolyzed coal gas and tar to pyrolysis coal gas down going channel (24) operation, each section of resistance by resistance regulation
Should meet: P1+P2+P3+P4+P5+P6 < P4+P7, wherein P1 is the first heating and gasifying agent distributor top coal charge resistance, and P2 is
First heating and gasifying agent distributor top heat buoyancy, P3 180oResistance is lost in elbow, and P4 is the first heating and gasifying agent distributor
Lower part heat buoyancy, P5 are that middle part downlink is pyrolyzed coal gas passage friction resistance, pipe resistance to flow output centered on P6, and P7 is the first heating gas
Agent distributor lower part coal charge resistance；Three layers of heating and gasifying agent distributor make to sequentially form from top to down in furnace: drying layer, destructive distillation
Layer, oxide layer, destructive distillation layer, oxide layer, reduction zone and oxide layer structure；
The first heating and gasifying agent distributor (5) is to inhale heater in the adverse current for be located at furnace body (2) top, equipped with the first heating
Gasifying agent distributor air supply pipe (17)；The second heating and gasifying agent distributor (7) is arranged on the inside of the furnace wall in the middle part of furnace body
Heater is inhaled under the fair current on the outside of pyrolysis coal gas down going channel (24), is furnished with the second heating and gasifying agent distributor air supply pipe
(16)；The third heating and gasifying agent distributor is to inhale heater in the adverse current for be arranged in furnace body center bottom, is tower gas
Distributor, and it is furnished with third heating and gasifying agent distributor air supply pipe (15)；
Furnace body (2) center is equipped with pyrolysis coal gas down going channel (24) or is positioned against a plurality of pyrolysis coal gas of furnace wall
Down going channel, and equipped with pyrolysis coal gas down going channel support steel structure (18), pyrolysis coal gas down going channel entrance (25) is to be located at
Destructive distillation layer center between coal charge distribution grid (3) and the first heating and gasifying agent distributor (5)；It is pyrolyzed the outlet of coal gas down going channel
(26) it is located at the reduction zone center between the second heating and gasifying agent distributor (7) and third heating and gasifying agent distributor (9)；It is described
Furnace body (2) be close to furnace wall middle and lower part be equipped with gas export control (14), gas export control entrance (8) be close to furnace wall and be located at second plus
Reduction zone between hot gas agent distributor (7) and third heating and gasifying agent distributor (9), gas export control export (10) and are close to
Furnace wall and the destructive distillation layer being located between the first heating and gasifying agent distributor (5) and the second heating and gasifying agent distributor (7), and extend
To outside furnace wall；
The inverting inverting method of tar gasifier tar of three layers of the center air guide fixed bed gas supply is coal charge by sealing coal
Device (1) is added in furnace, is uniformly distributed in furnace through coal charge distribution grid (3), then under the effect of gravity, coal charge first passes around first
Heating and gasifying agent distributor (5), into the first heating zone for having heating air feed outlet (20), in the first heating zone and air feed
Oxidation reaction occurs for oxygen, generates 500 DEG C of -800 DEG C of high temperature oxide layer areas, the burning hot gas flow direction of generation is upper and coal charge drives in the wrong direction and connects
Touching, coal charge is pyrolyzed and dried, and forms pyrolytic layer and drying layer, the combustion heat air-flow cooled down, pyrolysis gas and is done
Pathogenic dryness is pyrolyzed coal gas back spatial mixing at the top of furnace body, is entered under pyrolysis coal gas by pyrolysis coal gas down going channel entrance (25)
Row of channels (24) enters pyro-oxidation-reduction area from pyrolysis coal gas down going channel outlet (26), and tar is cleaved and gasifies；It is heated
The coal charge of decomposition continues traveling downwardly pyrolysis, the pyrolysis coal gas of the material, part downlink that are pyrolyzed and its in tar go downwards to second
When heating and gasifying agent distributor (7), 750-1100 DEG C is warming up in the second zoneofoxidation and is partially oxidized, and enter reduction and gaseous
Area, the tar that coal/coke and pyrolysis after the pyrolysis of reduction and gaseous area generate mostly occur greatly gasification reaction, generate the gas that gasifies, by
Gas export control entrance (8) enters gas export control (6) and is discharged out of the furnace by gas export control outlet (10)；High-temperature oxydation also
Former area do not have vaporized carbon residue continue traveling downwardly third heating and gasifying agent distributor (9) top high-temperature oxydation area 850-
1200 DEG C, in high-temperature oxydation area, carbon residue is oxidized burning, and the high-temperature ash under remaining forms slag blanket, the gas of high-temperature ash and input
Enter ash discharge structure (13) after agent heat exchange is cooling, is gradually discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810748804.8A CN108929721B (en) | 2018-07-10 | 2018-07-10 | Three layers of the center air guide fixed bed inverting tar gasification furnace of gas supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810748804.8A CN108929721B (en) | 2018-07-10 | 2018-07-10 | Three layers of the center air guide fixed bed inverting tar gasification furnace of gas supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108929721A CN108929721A (en) | 2018-12-04 |
| CN108929721B true CN108929721B (en) | 2019-05-31 |
Family
ID=64447639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810748804.8A Expired - Fee Related CN108929721B (en) | 2018-07-10 | 2018-07-10 | Three layers of the center air guide fixed bed inverting tar gasification furnace of gas supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108929721B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942342A (en) * | 2010-09-20 | 2011-01-12 | 张浩玥 | Fixed-bed grading and gasifying continuous gas producing furnace |
| CN101955803A (en) * | 2009-07-15 | 2011-01-26 | 山东科技大学 | Low-rank coal carbonization method |
-
2018
- 2018-07-10 CN CN201810748804.8A patent/CN108929721B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955803A (en) * | 2009-07-15 | 2011-01-26 | 山东科技大学 | Low-rank coal carbonization method |
| CN101942342A (en) * | 2010-09-20 | 2011-01-12 | 张浩玥 | Fixed-bed grading and gasifying continuous gas producing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108929721A (en) | 2018-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202543155U (en) | Combined circulation system for gasified combustion and catalyst regeneration by adopting heat carrier as basis | |
| CN102530859B (en) | External-heating-type microwave plasma gasification furnace and synthesis gas production method | |
| CN100582197C (en) | Circulating fluidized bed heat-power-gas-tar multi-joint-production apparatus and method | |
| CN107760387B (en) | High-nitrogen biomass waste gasification combustion heat supply system and process | |
| CN101993733B (en) | Novel municipal solid waste pyrolysis gasification furnace | |
| CN111637463A (en) | Self-heating waste pyrolysis gasification system and operation method thereof | |
| CN108949234B (en) | A kind of inverting tar gasification furnace of three layers of gas supply heating | |
| CN206428196U (en) | It is a kind of to be used for the updraft type steam gasification device of biomass and blended tars | |
| CN103642530B (en) | Counter-burning type gasification of coal furnace apparatus and technique | |
| CN109054874A (en) | Treatment of!medical waste method based on converter dust UTILIZATION OF VESIDUAL HEAT IN | |
| CN105861071B (en) | A kind of combined biomass graded gasification furnace | |
| CN205261533U (en) | Boiler combustion system | |
| CN208090661U (en) | A kind of carbon-based fuel fractional combustion and destructive distillation device based on chemical chain | |
| CN202047039U (en) | Exhaust preheating type biomass gasification device of dual-fuel engine | |
| CN108929720B (en) | A self-gasification pyrolysis coke gasifier | |
| CN211227042U (en) | Device for catalytic hydrogen production and power generation of biomass | |
| CN100363461C (en) | A method and device for producing gas by twin-bed pyrolysis of biomass/domestic waste | |
| CN107880940B (en) | Preheating gasification method and device | |
| CN108929721B (en) | Three layers of the center air guide fixed bed inverting tar gasification furnace of gas supply | |
| CN202164281U (en) | Reverse-gasifying tar-free gas producer | |
| CN100362084C (en) | Method and device for internal and external circulation coal gasification | |
| CN109294625B (en) | Fluidized gasification pre-oxidation reactor | |
| CN1323142C (en) | Combined circulating fluidized bed coal gasification method and equipment | |
| CN108504396B (en) | Biomass staged gasification method and special equipment | |
| CN206089598U (en) | Many feed inlets and many sealed inside and outside heated fluidized bed pyrolysis gasification system that ally oneself with usefulness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190531 Termination date: 20200710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |