CN101624539B - Method of taking supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace - Google Patents
Method of taking supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace Download PDFInfo
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- CN101624539B CN101624539B CN 200810138057 CN200810138057A CN101624539B CN 101624539 B CN101624539 B CN 101624539B CN 200810138057 CN200810138057 CN 200810138057 CN 200810138057 A CN200810138057 A CN 200810138057A CN 101624539 B CN101624539 B CN 101624539B
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- 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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Abstract
The invention relates to a method of taking the supplementary carbon source as the gasifying agent of a water-coal slurry gasifying furnace, belonging to field of the water-coal slurry gasifying furnace. Carbon dioxide or mixed gas or coke oven gas containing the carbon dioxide is led into the water-coal slurry gasifying furnace from at least one channel of the burning nozzle of the water-coal slurry gasifying furnace to be used as the gasifying agent. The invention improves the utilization ratio of coal and the resource containing carbon, reduces the emission of the carbon dioxide which is greenhouse gas, reduces the oxygen consumption and greatly decreases the coke oven gas purifying difficulty.
Description
Technical field
The present invention relates to coal slurry gasifier gasification field, relate in particular to a kind of to replenish the method for carbon sources such as carbonic acid gas or coke(oven)gas as gasifying agent of water-coal slurry gasifying furnace.
Background technology
The characteristics of China's energy structure are rich coal, oil-poor, weak breath, and this constructional feature has determined that China is that the energy structure of main body can not change for a comparatively long period of time with coal, and coal is the safest, the energy the most reliably of China.At present, world petroleum price is high, and the Coal Chemical Industry industry has possessed the economic condition that contends with petrochemical complex, and the status of coal in following Chinese national economy is with even more important.But develop the Coal Chemical Industry industry on a large scale and must consider of the influence of greenhouse gases carbonic acid gas simultaneously environment for human survival.
Carbonic acid gas is a kind of greenhouse gases; Its main source is the burning and the industrial production exhaust gas discharged of fossil property fuel; In order to make the greenhouse gases emission amount of carbon dioxide be controlled at the level of expection; Countries in the world are all in continuous effort, and wherein the recycling of carbonic acid gas is the emphasis of research and development.
In China, clean coal technology has been obtained important breakthrough, for China develops the Coal Chemical Industry industry on a large scale technical support is provided, and gasification is the tap of Coal Chemical Industry.Present domestic Coal Gasification Technology is a vaporized chemical with pure oxygen or oxygen enrichment, and the defective that this technology exists is that coal utilizaton rate is on the low side.
Summary of the invention
The objective of the invention is to be directed against the defective of above-mentioned existence and provide a kind of with the method for carbon sources such as additional carbonic acid gas or coke(oven)gas as gasifying agent of water-coal slurry gasifying furnace; This method has improved coal utilizaton rate; Improved the utilization ratio that contains the charcoal resource; Reduce the greenhouse gases emission amount of carbon dioxide, reduced the oxygen consumption simultaneously; For coke(oven)gas, greatly reduce the purification difficulty.
Of the present inventionly realize through following manner with the technical scheme of supplementary carbon source as the method for gasifying agent of water-coal slurry gasifying furnace; Vapourizing furnace according to oxygen/carbon normally than charging; The mixed gas that at least one passage through the coal gasifier burner progressively feeds carbonic acid gas or coke(oven)gas or contains carbonic acid gas is as vaporized chemical; Feed carbonic acid gas and gradually reduce the oxygen add-on simultaneously, when feeding coke(oven)gas, increase the oxygen add-on.The additional proportion of carbonic acid gas accounts for and feeds the carbonic acid gas original 0-80% that answers oxygenation tolerance before according to the purposes that generates gas.The coke(oven)gas add-on is for feeding the carbonic acid gas original 0-110% that answers oxygenation tolerance before.
As preferably, the add-on of carbonic acid gas is for feeding the original 10-25% that answers oxygenation tolerance before the carbonic acid gas.
The mixed gas that technical scheme of the present invention is described to contain carbonic acid gas can be mixed gas, carbonic acid gas and the water vapor of mixed gas, carbonic acid gas and the nitrogen of carbonic acid gas and water vapor, the mixed gas of nitrogen.
In the mixed gas of carbonic acid gas and water vapor; The consumption of water vapor is for feeding the carbonic acid gas original 0-50% that answers oxygenation tolerance before; The ratio of carbonic acid gas and water vapor is 1: 0.0005-10; In the mixed gas of carbonic acid gas and nitrogen; The consumption of nitrogen is for feeding the carbonic acid gas original 0-30% that answers oxygenation tolerance before, and carbonic acid gas and nitrogen ratios are 1: 0.0005-5, three's ratio is 1 in the mixed gas of carbonic acid gas and water vapor, nitrogen: 0.0005-10: 0.0005-5.
As preferably, the add-on of water vapor is for feeding original 10% of the oxygenation tolerance of answering before the carbonic acid gas, and the add-on of nitrogen is for feeding original 5% of the oxygenation tolerance of answering before the carbonic acid gas.
As preferably, the coke(oven)gas add-on is for feeding original 3% of the oxygenation tolerance of answering before the carbonic acid gas.
Of the present inventionly be applicable to single nozzle coal slurry gasifier, multi-nozzle coal slurry gasifier, polynary slurry vapourizing furnace as the method for gasifying agent of water-coal slurry gasifying furnace with supplementary carbon source.
For the multi-nozzle vapourizing furnace; The mixed gas that the adding of vaporized chemical of the present invention can progressively be fed carbonic acid gas or coke(oven)gas or contain carbonic acid gas simultaneously by top of gasification furnace burner or opposed type burner or top burner and opposed type burner feeds carbonic acid gas and gradually reduces the oxygen add-on simultaneously as vaporized chemical.
Beneficial effect of the present invention does; Carbonic acid gas, coke(oven)gas feed carbonic acid gas and in vapourizing furnace, participate in reaction as a kind of carbon resource, can improve the utilization ratio of coal resources on the one hand; Can reduce the greenhouse gases emission amount of carbon dioxide on the other hand, reduce oxygen-consumption; Coke(oven)gas is formed complicated, directly utilizes the purification difficulty big, and coke(oven)gas is under the hot conditions more than 1300 ℃, and various organic impuritys change into CO, CO
2, H
2, H
2S, NH
3Deng synthetic gas, on the basis of improving the coal resources utilization ratio, it purifies difficulty and also reduces greatly.For the multi-nozzle vapourizing furnace, feed carbonic acid gas through the top burner, make full use of the top burner on the one hand, can also protect vapourizing furnace vault refractory brick, prolong the work-ing life of key brick.In a word, of the present invention with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace, improved the coal resources utilization ratio; And minimizing greenhouse gases emission amount of carbon dioxide; Reduce the oxygen depletion amount, increase the work-ing life of equipment, integral body reduces production costs; Economize on resources, possess outstanding substantive distinguishing features and obvious improvement.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is carried out detailed explanation.
Embodiment 1
The single nozzle coal slurry gasifier, the high 15m of stove, diameter 2800mm, 450 tons of day processing shenfu coals are raw material with the coal water slurry, solid content 61%, working pressure 2.7Mpa, 1350 ℃ of service temperatures are vaporized chemical with 99.6% oxygen, oxygen flow is 11850m
3/ h, efficiency of carbon conversion 96%, effectively gas 80%.The carbonic acid gas of aerating oxygen flow 10% in a passage of burner, the efficiency of carbon conversion 97% of this moment, effectively gas 80.2%.
Embodiment 2
4 nozzle opposed type vapourizing furnaces, the high 21.3m of stove, diameter 3400mm, 1500 tons of day processing shenfu coals are raw material with the coal water slurry, solid content 62%, working pressure 4.0Mpa, 1300 ℃ of service temperatures are vaporized chemical with 99.6% oxygen, oxygen flow is 38400m
3/ h, efficiency of carbon conversion 98%, effectively gas 81.5%.At the carbonic acid gas of top of gasification furnace burner aerating oxygen amount 25%, efficiency of carbon conversion 99%, effectively gas 81.0%.
Embodiment 3
4 nozzle opposed type vapourizing furnaces, the high 21.3m of stove, diameter 3400mm, 1500 tons of day processing shenfu coals are raw material with the coal water slurry, solid content 62%, working pressure 4.0Mpa, 1330 ℃ of service temperatures are vaporized chemical with 99.6% oxygen, oxygen flow is 38400m
3/ h, efficiency of carbon conversion 98%, effectively gas 81.5%.Feed 3% coke(oven)gas at the top of gasification furnace burner, oxygen flow increases by 5%, efficiency of carbon conversion 98.5%, effectively gas 82.2%.
Embodiment 4
4 nozzle opposed type vapourizing furnaces, the high 21.3m of stove, diameter 3400mm, 1500 tons of day processing shenfu coals are raw material with the coal water slurry, solid content 62%, working pressure 4.0Mpa, 1330 ℃ of service temperatures are vaporized chemical with 99.6% oxygen, oxygen flow is 38400m
3/ h, efficiency of carbon conversion 98%, effectively gas 81.5%.At the carbonic acid gas of vapourizing furnace opposed type burner aerating oxygen amount 20%, 10% water vapour, transformation efficiency 98.6%, effectively gas 81.7%.
Embodiment 5
4 nozzle opposed type vapourizing furnaces, the high 21.3m of stove, diameter 3400mm, 1500 tons of day processing shenfu coals are raw material with the coal water slurry, solid content 62%, working pressure 4.0Mpa, 1350 ℃ of service temperatures are vaporized chemical with 99.6% oxygen, oxygen flow is 38400m
3/ h, efficiency of carbon conversion 98%, effectively gas 81.5%.At the carbonic acid gas of top of gasification furnace burner aerating oxygen amount 20%, 5% nitrogen, efficiency of carbon conversion 98.2%, effectively gas 80.2%.
Embodiment 6
4 nozzle opposed type vapourizing furnaces, the high 21.3m of stove, diameter 3400mm, 1500 tons of day processing shenfu coals are raw material with the coal water slurry, solid content 62%, working pressure 4.0Mpa, 1300 ℃ of service temperatures are vaporized chemical with 99.6% oxygen, oxygen flow is 38400m
3/ h, efficiency of carbon conversion 98%, effectively gas 81.5%.At the carbonic acid gas of top of gasification furnace burner aerating oxygen amount 20%, 10% water vapour, 5% nitrogen, efficiency of carbon conversion 98.3%, effectively gas 80.4%.
Embodiment 7
4 nozzle opposed type vapourizing furnaces, the high 21.3m of stove, diameter 3400mm, 1500 tons of day processing shenfu coals are raw material with the coal water slurry, solid content 62%, working pressure 4.0Mpa, 1300 ℃ of service temperatures are vaporized chemical with 99.6% oxygen, oxygen flow is 38400m
3/ h, efficiency of carbon conversion 98%, effective gas 81.5%, the carbonic acid gas of while aerating oxygen amount 10% in top of gasification furnace burner and opposed type burner, efficiency of carbon conversion 98.5%, effectively gas 81.3%.
Claims (8)
1. one kind with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace, it is characterized in that: mixed gas or coke(oven)gas that at least one passage through gasifier nozzle feeds carbonic acid gas or contains carbonic acid gas are as vaporized chemical; The add-on of described carbonic acid gas is for feeding the carbonic acid gas original 10-25% that answers oxygenation tolerance before.
2. according to claim 1 with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace, it is characterized in that: the mixed gas of the mixed gas that the described mixed gas that contains carbonic acid gas is carbonic acid gas and water vapor or the mixed gas of carbonic acid gas and nitrogen or carbonic acid gas and water vapor, nitrogen.
3. according to claim 2 with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace; It is characterized in that: in the mixed gas of described carbonic acid gas and water vapor; The consumption of water vapor is for feeding the carbonic acid gas original 0-50% that answers oxygenation tolerance before; The ratio of carbonic acid gas and water vapor is 1:0.0005-10, and in the mixed gas of carbonic acid gas and nitrogen, the consumption of nitrogen is for feeding the carbonic acid gas original 0-30% that answers oxygenation tolerance before; Carbonic acid gas and nitrogen ratios are 1:0.0005-5, and three's ratio is 1:0.0005-10:0.0005-5 in the mixed gas of carbonic acid gas and water vapor, nitrogen.
4. according to claim 2 with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace; It is characterized in that: the add-on of described water vapor is for feeding carbonic acid gas original 10% of the oxygenation tolerance of answering before, and the add-on of nitrogen is original 5% of the oxygenation tolerance of answering before the feeding carbonic acid gas.
5. according to claim 1 with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace, it is characterized in that: described coke(oven)gas add-on is for feeding the carbonic acid gas original 0-110% that answers oxygenation tolerance before.
6. according to claim 5 with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace, it is characterized in that: described coke(oven)gas add-on is for feeding carbonic acid gas original 3% of the oxygenation tolerance of answering before.
7. according to claim 1 with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace, it is characterized in that: this method is applicable to single nozzle coal slurry gasifier, multi-nozzle coal slurry gasifier, polynary slurry vapourizing furnace.
8. according to claim 7 with the method for supplementary carbon source as gasifying agent of water-coal slurry gasifying furnace; It is characterized in that: for the multi-nozzle vapourizing furnace, the mixed gas that is fed carbonic acid gas or coke(oven)gas simultaneously or contained carbonic acid gas by top of gasification furnace burner or opposed type burner or top burner and opposed type burner is as vaporized chemical.
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| CN101624539B true CN101624539B (en) | 2012-04-18 |
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| CN101812329A (en) * | 2010-04-15 | 2010-08-25 | 山东省冶金设计院股份有限公司 | Method for making reducing gas special for indirect reduction of iron oxides |
| CN102732317A (en) * | 2012-06-13 | 2012-10-17 | 林冲 | Technological process for preparing synthetic gas by using biomass |
| KR101421802B1 (en) * | 2012-09-24 | 2014-07-23 | 재단법인 포항산업과학연구원 | Method for amplifying coke-oven |
| CN103468320B (en) * | 2013-09-25 | 2014-12-24 | 上海锅炉厂有限公司 | Carbon dioxide coal slurry preparation and gasification system |
| CN103865555B (en) * | 2014-04-09 | 2015-08-26 | 太原理工大学 | A kind of benefit carbon method of dry distillation gas methane synthetic gas |
| CN106085510B (en) * | 2016-06-12 | 2020-10-23 | 新奥科技发展有限公司 | Coal gasification method and gasification furnace |
| CN106085509A (en) * | 2016-06-12 | 2016-11-09 | 新奥科技发展有限公司 | Coal dust and water-coal-slurry gasification process and gasification furnace altogether |
| CN106995724A (en) * | 2017-05-09 | 2017-08-01 | 北京清创晋华科技有限公司 | A kind of system and method that water-gas is prepared with oven gas and water-coal-slurry |
| CN114015474A (en) * | 2021-02-19 | 2022-02-08 | 恒力石化（大连）炼化有限公司 | CO (carbon monoxide) for gasifying and utilizing coal water slurry2Method (2) |
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Inventor after: Wang Xin Inventor after: He Ye Inventor after: Wang Mingfeng Inventor after: Wu Zhang Inventor before: He Ye Inventor before: Wang Mingfeng Inventor before: Wu Zhang |
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Free format text: CORRECT: INVENTOR; FROM: HE YE WANG MINGFENG WU ZHANG TO: WANG XIN HE YE WANG MINGFENG WU ZHANG |
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