CN1262627C - Oven gas generation of plasma gasified coke oven - Google Patents
Oven gas generation of plasma gasified coke oven Download PDFInfo
- Publication number
- CN1262627C CN1262627C CNB2004100924203A CN200410092420A CN1262627C CN 1262627 C CN1262627 C CN 1262627C CN B2004100924203 A CNB2004100924203 A CN B2004100924203A CN 200410092420 A CN200410092420 A CN 200410092420A CN 1262627 C CN1262627 C CN 1262627C
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- Prior art keywords
- gas
- plasma
- present
- coke oven
- gasification
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- 239000000571 coke Substances 0.000 title abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 89
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000009272 plasma gasification Methods 0.000 claims abstract description 21
- 239000003245 coal Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000002309 gasification Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 claims description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000567 combustion gas Substances 0.000 abstract description 2
- 229910052736 halogen Inorganic materials 0.000 abstract description 2
- 150000002367 halogens Chemical class 0.000 abstract description 2
- 210000002381 plasma Anatomy 0.000 abstract 5
- 208000008316 Arsenic Poisoning Diseases 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000003570 air Substances 0.000 description 5
- 238000004939 coking Methods 0.000 description 5
- 239000011269 tar Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000011282 acid tar Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002894 chemical waste Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000011285 coke tar Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002641 tar oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Industrial Gases (AREA)
Abstract
The present invention relates to a method for gasifying coke oven crude gas by plasmas, particularly a method for preparing synthesis gas by high temperature coke oven crude gas assisted by plasmas. The present invention is characterized in that a coke oven generates crude gas containing a large amount of steam and tar steam, without cooling processing, the crude gas directly enters a plasma gasification reactor to act with plasmas generated by a plasma generator to generate synthesis gas, reducing gas and combustion gas with H2 and CO as the main components. The present invention is suitable for the fields of coal chemical industry and plasma chemical industry. The present invention has the advantages of short process flow, simple operation of the method, high thermal efficiency and little environment pollution. Simultaneously, the present invention overcomes the problem that the traditional technology needs catalysts having the problems of easy carbon deposition and sulfur, halogen and arsenic poisoning, and provides a new way for the comprehensive utilization of coke oven crude gas.
Description
Technical field
The method of plasma gasification coal oven dithio-gas of the present invention relates to a kind of coking raw gas and makes with H under plasma is auxiliary
2, CO is the method for main synthetic gas, reducing gas, combustion gas, belongs to Coal Chemical Industry and plasma chemical industry category.
Technical background
The ordinary method of handling coal oven dithio-gas is: 650 ℃～850 ℃ raw gas is cooled to 80 ℃～85 ℃ at bridge tube, effuser spray ammoniacal liquor, be cooled to 25 ℃～35 ℃ again in gas primary cool workshop section, a large amount of sensible heat and wherein a large amount of water vapors, the latent heat of tar steam of raw gas is wasted therebetween, also need to consume a large amount of water coolants and ammonia simultaneously, coal gas after just cold also will pass through electrically trapped tar oil, except that ammonia, take off naphthalene, wash benzene, operation such as desulfurization, the purification coal gas that obtains could be as the raw material production synthetic gas.All there is coking chemical waste water to produce in each workshop section, also has coke tar refuse, acid tar and regenerating wash oil residue to generate in addition.When big energy is wasted, cause very overall situation pollution.
China's coke output in this year will be near 200,000,000 tons, and raw gas output will be above 1,000 hundred million m
3Only Shanxi Province's coking last year is 8,000 ten thousand tons, produce about 304 billion cubic meters of coke-oven gas, it is national West-East National Gas Transmission Project year 2.53 times of displacement, enough Shanxi urban and rural residents used 8 years, but the reasonable utilization ratio of coke-oven gas only is 8.86%, remaining directly discharges a large amount of wastes, is equivalent to the about 2,000 ten thousand tons of coals of annual loss, causes the financial loss over ten billion Yuan.Along with " progress of West-east Gas engineering, coke(oven)gas will be very rewind down go out the gas field, will cause the excessive of coke(oven)gas; how rationally, effectively utilize a large amount of coke(oven)gas; be to solve the wasting of resources, environmental pollution is with the closely-related big problem of socio-economic development.
At present, for coming synthetic ammonia, methyl alcohol, dme, the raw material production synthetic gas is considered to a good outlet with the coke-oven gas.The route of being produced synthetic gas by coke-oven gas roughly has three, and the one, partial oxidation technology, the 2nd, steam reformation, the 3rd, CO 2 reformation, three operational paths all need catalysis system.No matter which bar circuit all needs raw gas is purified, make to purify in the coal gas of back sulfide, halogen compounds, tar etc. and reduce to and equate low level.Analyse carbon, sulphur, halogen, arseniasis to prevent catalyzer.Clean coke-oven gas synthetic gas synthesizing methanol f=(H
2-CO)/(CO+CO
2) ideal conditions that is higher than synthesizing methanol is f=2.10, coal-tar middle oil steam of raw gas and lower carbon number hydrocarbons can be converted into CO under plasma effect can obtain rational f value.In addition, no matter the sort of technology all exists technical process long, and facility investment is big, process cost height, the shortcoming that energy utilization efficiency is low.
The method of plasma gasification coal oven dithio-gas of the present invention, not only can utilize the sensible heat of the raw gas that directly utilizes 650 ℃～850 ℃ and steam latent heat wherein, and be rich in a large amount of high-octane active particles (molecule of ion, electronics, atom, excited state etc.) and participate in chemical reaction, can obtain the higher temperature of chemical combustion, heating rate and gasification rate, generate CO/H
2Than suitable synthetic gas.Therefore the present invention has concentration of energy, gasification rate is fast, gasification intensity is high, flow process is short, facility compact, be easy to realize increasingly automated and pollute little, do not have the Liquid wastes generation, do not need characteristics such as catalyzer, atmospheric operation.
Summary of the invention
The purpose of the method for plasma gasification coal oven dithio-gas of the present invention is to overcome the deficiencies in the prior art, improves the energy utilization efficiency of coke-oven gas, solves problems such as existing producing synthesis gas from coal Technology Need high pressure, catalyzer and the easy carbon distribution of catalyzer, poisoning.Disclose a kind of utilize plasma body raw gas is efficient, clean, be converted into the method for synthetic gas easily.
Mainly forming (mass percent) by pit kiln coking chamber furnace roof space through the raw gas that upcast comes out is: tar steam 9%～14%, water vapor 30%～36%, crude benzol 2.5%～4.3%, ammonia 0.7%～1.1%, H
24%～10%, CH
417%～31%, CO 7%～12%, N
21%～10%, CO
22%～7%.
Therefrom contain a large amount of water vapors in the raw gas as can be seen, from thermodynamic (al) angle analysis, the water vapor in 650～850 ℃ of raw gas and methane, lower carbon number hydrocarbons, tar steam have the ability that generates the higher concentration synthetic gas; Driven angle of mechanics says that speed of reaction is very slow.Water vapor and methane, lower carbon number hydrocarbons, tar steam are being rich under the action of plasma of active particle and the activation energy of oxygenousization agent reaction such as water vapour reduces significantly, and gasification reaction carries out with the speed that is exceedingly fast, and generates the H of high density
2, CO.
Based on above thinking, raw gas enters plasma gasification reactor through upcast, bridge tube, effuser.Plasma generator adopts gas such as air, oxygen, nitrogen, water vapor or their mixed gas as working gas, also can be with raw gas directly as working gas, at first infeed water coolant, working gas, vaporized chemical (water vapor, oxygen-containing gas) and raw gas in plasma generator and plasma gasification reactor during work, the working gas of plasma generator is H
2, Ar, O
2, N
2, gas and gas mixture thereof such as air, or only supply raw gas and water coolant, light electric arc then, just formed high-temperature plasma with high energy active particle, composition in the raw gas and action of plasma are activated in plasma gasification reactor, generate H in normal pressure reaction of following moment gasification
2, CO.Gas temperature rises to more than 1500 ℃ simultaneously, and the synthetic gas heat is reclaimed by waste heat boiler.
The plasma body that above-mentioned plasma generator produces is an arc plasma.
Above-mentioned plasma body is mobile model arc plasma or non-moving type arc plasma.
Above-mentioned plasma body is DC arc plasma or alternating current arc plasma body.。
The working gas of above-mentioned plasma generator is H
2, Ar, O
2, N
2, gas and gas mixture thereof such as air.
Embodiment
Embodiment 1
Pressurized air and water coolant are delivered to plasma generator, start plasma generator and light electric arc, raw gas enters plasma gasification reactor by coking chamber through upcast, bridge tube, effuser (covering lagging material outside the pipeline), hydrocarbon polymer in the raw gas, the process of coalingging enter coal dust and the water vapour and the air plasma contact activation of upcast, and rapid reaction generates CO, H
2, and minor N
2, CO
2Mixture Deng gas.The mixed gas temperature enters waste heat boiler then and reclaims heat at 1500 ℃, the high compressed steam of generation, and a part is supplied with the factory power system and is used, and a part also can enter plasma gasification system and use as vaporized chemical.
Embodiment 2
Raw gas enters plasma gasification reactor through a series of pipelines along the reactor tangent line, feed high compressed steam (waste heat boiler generation) along the reactor tangential direction simultaneously, light plasma arc then, at solenoid of the outside placement of plasma gasification reactor, article on plasma electric arc compression and control, make plasma arc with certain frequency with the equidirectional rotation of air-flow.It has strengthened the effect of plasma body and reactant, has accelerated speed of reaction, has generated high-quality synthetic gas.2500 ℃ synthetic gas enters waste heat boiler, produces high-pressure steam, supplies with the factory power system and uses.A part also can enter plasma gasification system and use as vaporized chemical.
Claims (5)
1. the method for a plasma gasification coal oven dithio-gas, it is characterized in that it being that the raw gas that contains a large amount of water vapour, tar steam that generates of a kind of pit kiln is without cooling process, directly enter plasma gasification reactor and act on mutually, generate with H with the plasma body that plasma generator produces
2, CO is the method for main synthetic gas, the raw gas temperature that is adopted is 650 ℃～850 ℃, main form (mass percent) is: tar steam 9%～14%, water vapor 30%～36%, crude benzol 2.5%～4.3%, ammonia 0.7%～1.1%, H
24%～10%, CH
417%～31%, CO 7%～12%, N
21%～10%, CO
22%～7%, this raw gas arrives plasma gasification reactor through upcast, bridge tube, effuser, or send into the water vapor that produces by waste heat boiler and oxygen-containing gas simultaneously as vaporized chemical, in plasma gasification reactor, composition in the raw gas, water vapor and action of plasma are activated, and generate H in normal pressure reaction of following moment gasification
2, CO is main gas, gas temperature rises to more than 1500 ℃ simultaneously, the synthetic gas heat is reclaimed by waste heat boiler, produces water vapor.
2. according to the method for a kind of plasma gasification coal oven dithio-gas that claim 1 provided, it is characterized in that the plasma body that described plasma generator produces is an arc plasma.
3. according to the method for a kind of plasma gasification coal oven dithio-gas that claim 1 provided, it is characterized in that described plasma body is mobile model arc plasma or non-moving type arc plasma.
4. according to the method for a kind of plasma gasification coal oven dithio-gas that claim 1 provided, it is characterized in that described plasma body is DC arc plasma or alternating current arc plasma body.
5. according to the method for a kind of plasma gasification coal oven dithio-gas that claim 1 provided, the working gas that it is characterized in that described plasma generator is H
2, Ar, O
2, N
2, air and gas mixture thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100924203A CN1262627C (en) | 2004-12-16 | 2004-12-16 | Oven gas generation of plasma gasified coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100924203A CN1262627C (en) | 2004-12-16 | 2004-12-16 | Oven gas generation of plasma gasified coke oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644661A CN1644661A (en) | 2005-07-27 |
| CN1262627C true CN1262627C (en) | 2006-07-05 |
Family
ID=34869342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100924203A Expired - Fee Related CN1262627C (en) | 2004-12-16 | 2004-12-16 | Oven gas generation of plasma gasified coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1262627C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090009950A (en) | 2006-05-05 | 2009-01-23 | 플라스코에너지 아이피 홀딩스, 에스.엘., 빌바오, 샤프하우젠 브랜치 | Gas homogenization system |
| NZ573217A (en) | 2006-05-05 | 2011-11-25 | Plascoenergy Ip Holdings S L Bilbao Schaffhausen Branch | A facility for conversion of carbonaceous feedstock into a reformulated syngas containing CO and H2 |
| AU2007247900A1 (en) | 2006-05-05 | 2007-11-15 | Plascoenergy Ip Holdings, S.L., Bilbao, Schaffhausen Branch | A horizontally-oriented gasifier with lateral transfer system |
| MY156047A (en) | 2006-05-05 | 2015-12-31 | Plascoenergy Ip Holdings S L | A control system for the conversion of a carbonaceous feedstock into gas |
| KR20090019816A (en) | 2006-05-05 | 2009-02-25 | 플라스코에너지 아이피 홀딩스, 에스.엘., 빌바오, 샤프하우젠 브랜치 | Gas conditioning system |
| MX2008014199A (en) | 2006-05-05 | 2009-09-07 | Plasco Energy Ip Holdings S L | A gas reformulating system using plasma torch heat. |
| CN102057222B (en) | 2007-02-27 | 2013-08-21 | 普拉斯科能源Ip控股公司毕尔巴鄂-沙夫豪森分公司 | Gasification system with processed feedstock/char conversion and gas reformulation |
| US9321640B2 (en) | 2010-10-29 | 2016-04-26 | Plasco Energy Group Inc. | Gasification system with processed feedstock/char conversion and gas reformulation |
| CN104629779A (en) * | 2014-12-12 | 2015-05-20 | 中山大学 | Process for producing synthetic gas from urban garbage by virtue of combination of pyrolysis and plasma |
| DE102016012391A1 (en) | 2016-10-18 | 2018-04-19 | Linde Aktiengesellschaft | Process and plant for the production of hydrogen |
| CN109485016A (en) * | 2019-01-17 | 2019-03-19 | 河北科技大学 | A kind of system and method for the direct steam reformation hydrogen making of coal oven dithio-gas or ammonia |
| CN109553508B (en) * | 2019-01-17 | 2024-03-29 | 河北科技大学 | Device and method for producing methanol by directly reforming raw coke oven gas with water vapor |
| CN115044718B (en) * | 2022-06-10 | 2023-07-18 | 中钢设备有限公司 | Method, equipment and application for heating coal gas by plasma torch |
-
2004
- 2004-12-16 CN CNB2004100924203A patent/CN1262627C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1644661A (en) | 2005-07-27 |
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