CN1376767A - Oxygen-enriched gas generated continuously by coal - Google Patents
Oxygen-enriched gas generated continuously by coal Download PDFInfo
- Publication number
- CN1376767A CN1376767A CN 01107290 CN01107290A CN1376767A CN 1376767 A CN1376767 A CN 1376767A CN 01107290 CN01107290 CN 01107290 CN 01107290 A CN01107290 A CN 01107290A CN 1376767 A CN1376767 A CN 1376767A
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- CN
- China
- Prior art keywords
- gas
- oxygen
- stove
- coal
- steam
- 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.)
- Pending
Links
- 239000007789 gas Substances 0.000 title claims abstract description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 31
- 239000001301 oxygen Substances 0.000 title claims abstract description 31
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- 239000002641 tar oil Substances 0.000 abstract 1
- 238000002309 gasification Methods 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000003672 processing method Methods 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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- Industrial Gases (AREA)
Abstract
A process for gasifying coal features that the oxygen-enriched gasifying agent is fed into gasifier alternatively from its upper and lower parts. Its advantages are low consumption of oxygen and coal (decreased by 25% and 10% respectively), low residual carbon (decreased by 50%), and low content of CO2, methane and tar oil in gas.
Description
The invention belongs to the gasification field, specially refer to the coal generating gas processing method that adopts oxygen enrichment fixed bed or moving-bed.
No matter existing oxygen enrichment fixed bed or moving-bed coal generating gas are normal pressure or pressing technology, usually adopt with oxygen, vapor mixing proportional after, add in the stove from the Gas-making Furnace bottom.Oxygen-rich mixture is realized coal gasification in the flow state from bottom to top all the time in carbon-coating.Oxygen in the gas mixture at first with stove in carbon reaction in the carbon-coating, emit a large amount of heats when generating carbonic acid gas, add the water vapor in hot bed of carbon and the gas mixture, for the reaction of steam in the gas mixture and red-hot carbon-coating provides heat.Coal for gasification adds from stove top in the stove.Carbon-coating is gasified in slowly descending under the rotation of the fire grate of furnace bottom.Slag is discharged from furnace bottom.Vaporized chemical forms relative countercurrent movement with carbon-coating.Coal gas that generates and unreacted steam go upward to the air outlet that is located at upper of furnace body and leave Gas-making Furnace.
Because the vaporized chemical of gasification and the coal gas of generation are in flow state from bottom to top all the time.Gas constantly moves to heat in the carbon-coating of top by carbon-coating, temperature was low when its result went into stove owing to vaporized chemical, cause carbon residue content height in the slag, temperature is up to 650～750 ℃ when causing wet gas to leave Gas-making Furnace, take a large amount of heat of high temperature out of, its result unit of making coal gas consumption of coal and oxygen-consumption obviously increase, and cost increases.
Purpose of the present invention can overcome above-mentioned shortcoming for society provides a kind of, adopts the oxygen enrichment coal generating gas novel process of fixed bed or moving-bed.
The present invention adopts oxygen-rich gasifying agent, takes turns from Gas-making Furnace top respectively or the bottom adding, makes oxygen-rich gasifying agent in stove, to rotate up-downgoing flow pattern system gas.In order to guarantee safety, the preceding of up-downgoing system gas shift and after certain hour in, go into stove with pure steam, preventing the oxygen in the vaporized chemical, and accumulate in stove top or bottom (furnace bottom) spatial coal gas and mix formation and explode; To prevent to leave the coal gas of gasification layer, in the space of stove top or bottom (furnace bottom), run into oxygen and explosion hazard occurs simultaneously.Promptly each time no matter vaporized chemical all are the slow fed to boiler of oxygen when beginning to make gas from last or from being lowered to stove, all be that oxygen stops in advance into stove when stopping to make gas.Each system gas start-stop stage steam is gone into the time length of stove separately, and is relevant with factors such as space, stove top and the bottom, pressure, temperature, steam flows.
Adopt the present invention to carry out oxygen-enriched gas generated continuously by coal, owing to reduced the wet gas temperature of coming out of the stove significantly, the sensible heat that wet gas is taken out of reduces significantly, thereby the oxygen depletion of the unit's of making coal gas, feed coal consumption obviously reduce.Since descending system gas to moving down heat effect, the position of gasification layer is moved down relatively, and make the temperature of interior carbon-coating bottom of stove and ash bed be controlled at higher relatively temperature, make the carbon in the granular ash slag blanket of gasification layer bottom obtain the more gasification of the degree of depth, thereby reduced the carbon residue in the lime-ash effectively.
Adopt the present invention to make the synthetic ammonia semi-water gas, the fixed bed oxygen-enriched continuous gas-made technology of comparable existing single up system gas, unit coal gas reduces oxygen enrichment and consumes 25%, reduces coal consumption 10%, and the carbon residue in the slag reduces by 50%.Adopt the present invention to make methyl alcohol with synthetic gas such as water-gas, city domestic gases, the fixed bed oxygen-enriched continuous gas-made technology of comparable existing single up system gas reduces oxygen enrichment and consumes 20%, reduces coal consumption 10%.Carbon residue in the slag reduces by 50%.Adopt the present invention's gas maked coal that pressurizes, the continuous coal generating gas technology of also comparable existing fixed bed oxygen-enriched pressurization, reduce oxygen enrichment consumption 20%, coal consumption 10%, carbon residue 50%, than existing be the atmosphere intermission coal generating gas technology of oxygenant with the air, make various could synthetic under elevated pressures the unstripped gas of product, the ton product can reduce coal consumption 10%, reduces power consumption 500kWh.
Claims (6)
1. oxygen-enriched gas generated continuously by coal is characterized in that: oxygen rich air water vapour is gone into stove from stove top or bottom respectively in turn, make vaporized chemical carry out periodic uplink and downlink system gas continuously in turn at carbon-coating.
2. method according to claim 1 is characterized in that, the oxygen level of going in the stove oxygen-rich steam during up system gas is 10%～70%; The oxygen level of going into during descending system gas in the stove oxygen-rich steam is 5%～30%.
3. according to claim 1,2 described methods, it is characterized in that it is between 2～10 minutes that the time in each cycle is directly proportional with the Gas-making Furnace volume.
4. according to claim 1,2,3 method, it is characterized in that the time scale of up gas-making process and descending gas-making process is adjustable in each cycle.
5. according to claim 1,2,3,4 described methods, it is characterized in that the starting and ending stage of each gas-making process is all gone into stove with the pure steam of oxygen-free gas, pure each time steam go into the stove time for each cycle 3%～10% between.
6. according to claim 1,2,3,4,5 described methods, it is characterized in that the vapor pressure of oxygen-enriched gas generated continuously by coal is between 0.012MPa～6Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107290 CN1376767A (en) | 2001-03-28 | 2001-03-28 | Oxygen-enriched gas generated continuously by coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107290 CN1376767A (en) | 2001-03-28 | 2001-03-28 | Oxygen-enriched gas generated continuously by coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1376767A true CN1376767A (en) | 2002-10-30 |
Family
ID=4656234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01107290 Pending CN1376767A (en) | 2001-03-28 | 2001-03-28 | Oxygen-enriched gas generated continuously by coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1376767A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481629A (en) * | 2008-12-09 | 2009-07-15 | 福建三钢（集团）三明化工有限责任公司 | Fixed bed oxygen-enriched continuous gasification process |
| CN101250438B (en) * | 2008-04-17 | 2011-06-15 | 中国铝业股份有限公司 | Oxygen-enriched gas producing method for hybrid gas furnace |
| CN101392187B (en) * | 2008-10-29 | 2012-01-11 | 江西昌昱实业有限公司 | Bidirectional oxygen-enriched continuous gasification process for atmospheric fixed bed gas furnace |
| CN108546569A (en) * | 2018-06-27 | 2018-09-18 | 华东理工大学 | Airflow bed gasification furnace and gasification process |
-
2001
- 2001-03-28 CN CN 01107290 patent/CN1376767A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250438B (en) * | 2008-04-17 | 2011-06-15 | 中国铝业股份有限公司 | Oxygen-enriched gas producing method for hybrid gas furnace |
| CN101392187B (en) * | 2008-10-29 | 2012-01-11 | 江西昌昱实业有限公司 | Bidirectional oxygen-enriched continuous gasification process for atmospheric fixed bed gas furnace |
| CN101481629A (en) * | 2008-12-09 | 2009-07-15 | 福建三钢（集团）三明化工有限责任公司 | Fixed bed oxygen-enriched continuous gasification process |
| CN108546569A (en) * | 2018-06-27 | 2018-09-18 | 华东理工大学 | Airflow bed gasification furnace and gasification process |
| CN108546569B (en) * | 2018-06-27 | 2023-09-15 | 华东理工大学 | Entrained bed gasifier and gasification method |
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| RJ01 | Rejection of invention patent application after publication |