CN107829786A - A kind of near-zero release coal gasification power generation system and electricity-generating method with pollutant catabolic gene - Google Patents
A kind of near-zero release coal gasification power generation system and electricity-generating method with pollutant catabolic gene Download PDFInfo
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- CN107829786A CN107829786A CN201711235325.8A CN201711235325A CN107829786A CN 107829786 A CN107829786 A CN 107829786A CN 201711235325 A CN201711235325 A CN 201711235325A CN 107829786 A CN107829786 A CN 107829786A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
- H01M8/0668—Removal of carbon monoxide or carbon dioxide
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
A kind of near-zero release coal gasification power generation system and electricity-generating method with pollutant catabolic gene, the system include：Gasification furnace, coal gas cooling tower, dust arrester, volatile alkali metal removing means, desulfurizer, water-gas shift device, CO2Separator, expanding machine, fuel cell, catalytic burner, waste heat boiler, steam turbine, electrolytic tank of solid oxide, air separation unit and heat exchanger；The invention also discloses the electricity-generating method of the system；By the reasonable arrangement of each unit, the comprehensive utilization of chemical energy, electric energy, heat energy is realized；The present invention can not only realize the control of major pollutants in coal gasification power generation system, reach CO2Near-zero release purpose, also achieve and provide multiple forms of energy to complement each other, system capacity comprehensive utilization ratio reaches more than 65%.
Description
Technical field
The invention belongs to coal gasification power generation technical field, more particularly to a kind of near-zero release coal gasification with pollutant catabolic gene
Electricity generation system and electricity-generating method.
Background technology
With the use of modern society's fossil energy, the energy and environmental problem become increasingly conspicuous, the clean utilization of fossil energy
It is extremely urgent.The energy resource structure in China is rich coal, lean gas, few oil, and the clean utilization technological development of coal is being alleviated or even solved
Environmental problem plays vital effect.Coal Gasification Technology can effectively control the various pollutants in coal to discharge, and be coal
The core technology that charcoal clean and effective utilizes, it is significant to solving energy environment issues.
In the energy consumption structure of China, coal proportion is caused main dirty during coal utilization more than 70%
Contaminating thing includes sulfur-bearing, nitrogen, chlorine etc. and Determination of Trace Volatile metallic element (such as Hg, Pb, As, Se etc.).In addition, greenhouse gases CO2
Emission control be also one of subject matter of World Focusing.At present, China successfully develops extensive Coal Gasification Technology, in
State patent CN201610562104.0 discloses one kind and " CO before burning can be achieved2The integral coal gasification fuel cell power generation of trapping
System ", the system realize most of CO2Trapping so that CO2Discharge capacity reduces 75%, but still has waste gas discharge,
And there is no the control of the pollutants such as Determination of Trace Volatile metallic element (such as Hg, Pb, As, Se etc.).Chinese patent
CN201610888933.8 discloses a kind of " a kind of near-zero release coal generating system and method based on IGCC " and can realized
90% CO in emission-reducing system2, but NO be present in system tail gasXDischarge, be unfavorable for environmental protection.
The content of the invention
In order to overcome above-mentioned prior art shortcoming, it is an object of the invention to provide a kind of nearly zero-emission with pollutant catabolic gene
Coal gasification power generation system and electricity-generating method are put, can not only realize the control of major pollutants in coal gasification power generation system, is realized
CO2Near-zero release, also achieve and provide multiple forms of energy to complement each other, system capacity comprehensive utilization ratio reaches more than 65%.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of near-zero release coal gasification power generation system with pollutant catabolic gene, including gasification furnace 1, the connection of the entrance of gasification furnace 1
Reaction raw materials coal dust, H2O and O2Outlet, the entrance of coal gas of high temperature outlet coal gas cooling tower 2 of gasification furnace 1, coal gas cooling tower 2
High-temperature steam outlet connection the entrance of steam turbine 12, coal gas cooling tower 2 cooling gas exit connection the entrance of dust arrester 3, remove
The clean gas exit of dirt device 3 be sequentially communicated volatile alkali metal removing means 4, desulfurizer 5, water-gas shift device 6,
The anode-side of CO2 separators 7, expanding machine 8 and fuel cell 9, the cathode side of fuel cell 9 are passed through to pass through to air blower 13
The hot-air of 3rd heat exchanger 17, the entrance of anode-side high-temperature tail gas outlet catalytic burner 10 of fuel cell 9, catalysis combustion
The outlet of burner 10 divides two-way, connects the entrance of waste heat boiler 11 all the way, and the another way connection entrance of electrolytic tank of solid oxide 18 is remaining
The gas vent connection First Heat Exchanger 15 of heat boiler 11.
Reaction raw materials coal dust use into the entrance of gasification furnace 1 comes from the high pressure N of air separation unit 142Conveying.
Into the O of the entrance of gasification furnace 12From air separation unit 14.
A kind of electricity-generating method of near-zero release coal gasification power generation system with pollutant catabolic gene, the entrance of gasification furnace 1 lead to
Enter reaction raw materials coal dust, H2O and O2, reaction raw materials coal dust is using the high pressure N for coming from air separation unit 142Conveying, O2From sky
Separating device 14, coal gas of high temperature caused by reaction are exported into coal gas cooling tower 2 by gasification furnace 1, the top exit of tower 3 in coal gas cold-zone
Produce high-temperature steam to generate electricity into steam turbine 12, the coal gas after cooling enters dust arrester 3, exports out by dust arrester 3
Clean coal gas enters volatile alkali metal removing means 4, Hg, Pb, As and Se pollutant is removed, after removing volatile alkali metal
Coal gas, which enters desulfurizer 5, to be completed desulfurization and carries out sulfur recovery, and the coal gas come out from desulfurizer 5 enters water-gas shift device 6,
CO contents after conversion in coal gas are less than 1%, and the hydrogen-rich gas after conversion enters CO2Separator 7, by the CO after separation2
Trapped, from CO2The anode-side that the hydrogen-rich gas that separator 7 comes out is sent into fuel-cell device 9 after expanding machine 8 is entered
Capable to generate electricity, fuel battery negative pole side is passed through to the hot-air of the 3rd heat exchanger 17 of process of air blower 13, electrical energy transportation to power network,
The high-temperature tail gas come out from the anode of fuel cell 9 enters catalytic burner 10, and the hydrogen not reacted completely is with coming from space division dress
Put 14 O2Reacted, the CO come out from catalytic burner 102Waste heat boiler 11, band are partly into vapor gaseous mixture
Dynamic steam turbine 12 produces electric energy and is delivered to power network, and another part enters electrolytic tank of solid oxide 18 and produces CO and H2, can
For use as fuel or processing other chemicals, electrolytic cell energy source is in solar energy or wind energy；The gas come out from waste heat boiler 11
Body is after First Heat Exchanger 15 by CO2Trapping.
The present invention can not only realize the control of major pollutants in coal gasification power generation system, reach CO2Near-zero release
Purpose, also achieve and provide multiple forms of energy to complement each other, system capacity comprehensive utilization ratio reaches more than 65%.
Brief description of the drawings
Fig. 1 is the near-zero release coal gasification power generation system schematic of the invention with pollutant catabolic gene.
Embodiment
Describe embodiments of the present invention in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the invention provides a kind of near-zero release coal gasification power generation system with pollutant catabolic gene.
Embodiment 1：In the present embodiment, a kind of near-zero release coal gasification power generation system with pollutant catabolic gene includes gasification
Stove 1, the entrance of gasification furnace 1 connection reaction raw materials coal dust, H2O and O2Outlet, the coal gas of high temperature outlet coal gas cooling of gasification furnace 1
The entrance of tower 2, the high-temperature steam outlet connection entrance of steam turbine 12 of coal gas cooling tower 2, the cooling gas exit of coal gas cooling tower 2 connect
The logical entrance of dust arrester 3, the clean gas exit of dust arrester 3 are sequentially communicated volatile alkali metal removing means 4, desulfurizer
5th, the anode-side of water-gas shift device 6, CO2 separators 7, expanding machine 8 and fuel cell 9, the cathode side of fuel cell 9 are passed through
Come to air blower 13 hot-air by the 3rd heat exchanger 17, the anode-side high-temperature tail gas outlet catalysis combustion of fuel cell 9
The entrance of burner 10, the outlet of catalytic burner 10 divide two-way, connect the entrance of waste heat boiler 11, another way connection solid oxidation all the way
The entrance of thing electrolytic cell 18, the gas vent connection First Heat Exchanger 15 of waste heat boiler 11..
The entrance of gasification furnace 1 is passed through reaction raw materials coal dust, H2O and O2, reaction raw materials coal dust, which uses, comes from air separation unit 14
High pressure N2Conveying, O2From air separation unit 14, coal gas of high temperature caused by reaction is exported into coal gas cooling tower 2 by gasification furnace 1,
In coal gas cold-zone, top of tower outlet produces high-temperature steam and generated electricity into steam turbine 12, and the coal gas after cooling enters dust arrester 3, by
The clean coal gas of the outlet of dust arrester 3 out enters the pollutant such as volatile alkali metal removing means 4, removing Hg, Pb, As, Se,
Remove the coal gas after volatile alkali metal to complete desulfurization into desulfurizer 5 and carry out sulfur recovery, the coal come out from desulfurizer 5
Gas enters water-gas shift device 6, and the CO contents after conversion in coal gas are less than 1%, and the hydrogen-rich gas after conversion enters CO2Point
From device 7, by the CO after separation2Trapped, from CO2The hydrogen-rich gas that separator 7 comes out is sent into combustion after expanding machine 8
The anode-side of material cell apparatus 9 is generated electricity, and fuel battery negative pole side is passed through to air blower 13 by the 3rd heat exchanger 17
Hot-air, electrical energy transportation to power network, the high-temperature tail gas come out from the anode of fuel cell 9 enter catalytic burner 10, completely not anti-
The hydrogen answered is with carrying out the O as air separation unit 142Reacted, the CO come out from catalytic burner 102With vapor gaseous mixture one
Part enters waste heat boiler 11, drives steam turbine 12 to produce electric energy and is delivered to power network, another part enters soild oxide
Electrolytic cell 18 produces CO and H2, fuel or processing other chemicals are may be used as, electrolytic cell energy source is in solar energy or wind energy.
The gas come out from waste heat boiler 11 is after First Heat Exchanger 15 by CO2Trapping.
The principal goods stream energy of system mainly has the chemical energy being stored in coal to be converted into electric energy, and the conversion of electric energy derives from
Two parts, a part to generate electricity as high-temperature fuel cell, and a part is come as steam turbine power generation.High-temperature fuel cell, which generates electricity, imitates
Rate reaches 51%, and on the one hand the thermal source of steam turbine carrys out the heat exchange as coal gas cooling tower 2, on the other hand come as catalytic burner
Waste heat boiler 11 after 10, generating efficiency 31% deduct equipment consumption 17%, and comprehensive electric generating efficiency is 65%.In addition, system
Input energy sources of the renewable energy solar energy as electrolytic tank of solid oxide are also used, utilize afterbody waste gas in principal goods stream
(CO2+H2O high valuable chemicals) are produced, realization is provided multiple forms of energy to complement each other, and the comprehensive utilization ratio of the energy reaches more than 65%.
Claims (4)
- A kind of 1. near-zero release coal gasification power generation system with pollutant catabolic gene, it is characterised in that：Including gasification furnace (1), gasification Stove (1) entrance connection reaction raw materials coal dust, H2O and O2Outlet, the coal gas of high temperature outlet coal gas cooling tower (2) of gasification furnace (1) Entrance, high-temperature steam outlet connection steam turbine (12) entrance of coal gas cooling tower (2), the cooling coal gas of coal gas cooling tower (2) go out Mouth connection dust arrester (3) entrance, the clean gas exit of dust arrester (3) are sequentially communicated volatile alkali metal removing means (4), the anode of desulfurizer (5), water-gas shift device (6), CO2 separators (7), expanding machine (8) and fuel cell (9) Side, the cathode side of fuel cell (9) are passed through to air blower (13) hot-air for passing through the 3rd heat exchanger (17), fuel cell (9) anode-side high-temperature tail gas outlet catalytic burner (10) entrance, the outlet of catalytic burner (10) divide two-way, all the way Waste heat boiler (11) entrance, another way connection electrolytic tank of solid oxide (18) entrance are connected, the gas of waste heat boiler (11) goes out Mouth connection First Heat Exchanger (15).
- A kind of 2. near-zero release coal gasification power generation system with pollutant catabolic gene according to claim 1, it is characterised in that： Reaction raw materials coal dust use into gasification furnace (1) entrance comes from the high pressure N of air separation unit (14)2Conveying.
- A kind of 3. near-zero release coal gasification power generation system with pollutant catabolic gene according to claim 1, it is characterised in that： Into the O of gasification furnace (1) entrance2From air separation unit (14).
- A kind of 4. any one of claims 1 to 3 generating side of the near-zero release coal gasification power generation system with pollutant catabolic gene Method, it is characterised in that：Gasification furnace (1) entrance is passed through reaction raw materials coal dust, H2O and O2, coal gas of high temperature is by gasification furnace caused by reaction (1) outlet enters coal gas cooling tower (2), and produce high-temperature steam in coal gas cold-zone tower (3) top exit sends out into steam turbine (12) Electricity, the coal gas after cooling enter dust arrester (3), enter volatile alkali gold by the clean coal gas of dust arrester (3) outlet out Belong to removing means (4), remove Hg, Pb, As and Se pollutant, remove the coal gas after volatile alkali metal and enter desulfurizer (5) Complete desulfurization and carry out sulfur recovery, the coal gas come out from desulfurizer (5) enters water-gas shift device (6), the coal after conversion CO contents in gas are less than 1%, and the hydrogen-rich gas after conversion enters CO2Separator (7), by the CO after separation2Trapped, From CO2The anode-side that the hydrogen-rich gas that separator (7) comes out is sent into fuel-cell device (9) after expanding machine (8) is carried out Generate electricity, fuel battery negative pole side is passed through to air blower (13) hot-air for passing through the 3rd heat exchanger (17), electrical energy transportation to electricity Net, the high-temperature tail gas come out from fuel cell (9) anode-side enter catalytic burner (10), and the hydrogen not reacted completely is with coming from O in air separation unit (14)2Reacted, the CO come out from catalytic burner (10)2It is partly into vapor gaseous mixture remaining Heat boiler (11), drive steam turbine (12) to produce electric energy and be delivered to power network, another part enters electrolytic tank of solid oxide (18) CO and H is produced2, fuel or processing other chemicals are may be used as, electrolytic cell energy source is in solar energy or wind energy；From remaining The gas that heat boiler (11) comes out is after First Heat Exchanger (15) by CO2Trapping.
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Cited By (7)
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| CN109148919A (en) * | 2018-10-11 | 2019-01-04 | 中国华能集团清洁能源技术研究院有限公司 | A kind of integral coal gasification fuel cell generation and method using coal gas high-temperature sensible heat |
| CN109301283A (en) * | 2018-09-28 | 2019-02-01 | 中国华能集团清洁能源技术研究院有限公司 | A kind of band CO2The integral coal gasification fuel cell system of trapping |
| CN109350988A (en) * | 2018-11-15 | 2019-02-19 | 中国华能集团清洁能源技术研究院有限公司 | A kind of CO2The IGFC electricity generation system and method that liquefaction process is coupled with cryogenic air separation unit |
| CN109473702A (en) * | 2018-11-16 | 2019-03-15 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of solid oxide fuel cell exhaust treatment system and processing method |
| CN109742800A (en) * | 2019-01-24 | 2019-05-10 | 华电电力科学研究院有限公司 | A kind of energy internet system and working method based on natural gas, hydrogen, electric power |
| CN110156047A (en) * | 2019-05-27 | 2019-08-23 | 福州大学化肥催化剂国家工程研究中心 | A kind of synthesis ammonia method of solid oxide electrolyte/fossil fuel synthesis ammonia coupling |
| CN113982753A (en) * | 2021-11-03 | 2022-01-28 | 上海交通大学 | Coal gasification and SOFC-HAT integrated hybrid power generation system |
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| CN109473702A (en) * | 2018-11-16 | 2019-03-15 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of solid oxide fuel cell exhaust treatment system and processing method |
| CN109742800A (en) * | 2019-01-24 | 2019-05-10 | 华电电力科学研究院有限公司 | A kind of energy internet system and working method based on natural gas, hydrogen, electric power |
| CN109742800B (en) * | 2019-01-24 | 2024-02-09 | 华电电力科学研究院有限公司 | Energy internet system based on natural gas, hydrogen and electric power and working method |
| CN110156047A (en) * | 2019-05-27 | 2019-08-23 | 福州大学化肥催化剂国家工程研究中心 | A kind of synthesis ammonia method of solid oxide electrolyte/fossil fuel synthesis ammonia coupling |
| CN113982753A (en) * | 2021-11-03 | 2022-01-28 | 上海交通大学 | Coal gasification and SOFC-HAT integrated hybrid power generation system |
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