CN208138013U - Carbon-containing fuel supercritical carbon dioxide electricity generation system based on membrane wall gasification furnace - Google Patents
Carbon-containing fuel supercritical carbon dioxide electricity generation system based on membrane wall gasification furnace Download PDFInfo
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- CN208138013U CN208138013U CN201820428144.0U CN201820428144U CN208138013U CN 208138013 U CN208138013 U CN 208138013U CN 201820428144 U CN201820428144 U CN 201820428144U CN 208138013 U CN208138013 U CN 208138013U
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- cycle fluid
- gasification furnace
- containing fuel
- carbon dioxide
- membrane wall
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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
- 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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The utility model discloses the carbon-containing fuel supercritical carbon dioxide electricity generation systems based on membrane wall gasification furnace, it includes at least the circulation loop formed by gasification furnace, waste heat boiler, turbine, regenerator, heat exchanger, compressor, and the cycle fluid in circulation loop is supercritical carbon dioxide；The utility model is combined using carbonaceous fuel gasifying with supercritical carbon dioxide circulation, raw material is not limited to coal, fixed bed, fluidized bed or airflow bed gasification furnace can be used in gasification technology, gasifying agent is not limited to oxygen, system is integrally considered as Brayton Cycle system simple, that forms are compressed etc. with backheat, band, there is very strong adaptability and flexibility.
Description
Technical field
The utility model belongs to advanced energy source and power and chemical field, the specially carbon-containing fuel based on membrane wall gasification furnace
Supercritical carbon dioxide electricity generation system.
Background technique
For carbon-containing fuel in gasification, maximum temperature is up to thousands of degree, in order to absorb gasification furnace burner hearth high temperature flame and conjunction
At the radiations heat energy of gas, furnace wall temperature is reduced, protects furnace wall, domestic and foreign scholars develop the membrane wall different from lining of fire brick
Gasification furnace.Water-cooling wall form is all made of at present to be cooled down, i.e., using water as cooling medium, the cooling generation steam in membrane wall
Form.General later use steam carries out Rankine cycle power generation, to recycle heat, improve the thermal efficiency.
Supercritical carbon dioxide has the characteristics that energy density is big, heat transfer efficiency is high, and being recognized is most application prospect
One of energy transmission and transformation working medium.Using supercritical carbon dioxide as the Brayton cycle of working medium compared to vapor Rankine
Circulation has many advantages, such as that under identical power output, the former unit size is about 1/10th of the latter's unit, and initial investment can be substantially
Degree reduces；At identical temperature, the former is higher than the latter at cycle efficieny, and system thermal efficiency can be further improved.
The public technology for being related to carbonaceous fuel gasifying and supercritical carbon dioxide circulation has：
1, Publication No. CN106014512 A（201610513268.4）Chinese patent literature, disclose one kind and be based on
The coal derived fuel pure oxygen burning electricity generation system and method for supercritical carbon dioxide, coal gasify under oxygen and carbon dioxide effect,
Pure oxygen burning is carried out after raw gas is purified, the flue gas of generation carries out supercritical carbon dioxide circular work as cycle fluid
Power generation.
2, Publication No. CN105820842 A（201610334811.4）Chinese patent literature, disclose a kind of coal gas
Change supercritical carbon dioxide cycle generating system, based on coal base pure oxygen gasification, synthesis gas is as the overcritical dioxy of internal combustion type
The fuel for changing carbon cycle combustion chamber, reacts with oxygen, generates carbon dioxide, circular work.
3, Publication No. CN107177383 A（201710449074.7）Chinese patent literature, disclose a kind of with super
Critical carbon dioxide is the gasification system and method for gasifying agent, and supercritical carbon dioxide enters gasification together with fine coal and oxygen
Gasification reaction occurs in furnace, generates synthesis gas, enters in carbon dioxide separating system after synthesis air cooling, purification, isolate
Carbon dioxide a part carries out sealing utilization up for safekeeping, is again introduced into gasification furnace after another part preheating and is reacted.
But technical solution disclosed above is using coal as fuel, and utilizes the cigarette after gasification synthesis gas or syngas combustion
The pure cycle fluid as supercritical carbon dioxide circulation of air lift, corresponding requirements coal gasification is with pure oxygen（Or cooperation carbon dioxide）
As gasifying agent, technical application range is smaller.
Utility model content
The carbon-containing fuel supercritical carbon dioxide electricity generation system based on membrane wall gasification furnace that the utility model proposes a kind of,
It is combined using carbonaceous fuel gasifying with supercritical carbon dioxide circulation, raw material is not limited to coal, and fixation can be used in gasification technology
Bed, fluidized bed or airflow bed gasification furnace, gasifying agent are not limited to oxygen, there is very strong adaptability and flexibility.
The technical solution of the utility model is as follows：
Carbon-containing fuel supercritical carbon dioxide electricity generation system based on membrane wall gasification furnace, it is characterised in that：It includes at least
The circulation loop formed by gasification furnace, waste heat boiler, turbine, regenerator, heat exchanger, compressor is provided on circulation loop and follows
Ring sender property outlet one, cycle fluid outlet two, cycle fluid outlet three, cycle fluid outlet four, cycle fluid outlet five, circulation
Sender property outlet six, the cycle fluid in circulation loop is supercritical carbon dioxide；Wherein：
Cycle fluid outlet one is set to the outlet of gasification furnace membrane wall structure, and cycle fluid outlet one connects with waste heat boiler
It is logical；
Cycle fluid outlet two is set on waste heat boiler, continues the temperature for improving cycle fluid using waste heat boiler, together
When give synthesis gas cooling, cycle fluid outlet two is connected to turbine；
Cycle fluid outlet three is set on the end of turbine, and cycle fluid is for power generation of doing work, cycle fluid outlet three
It is connected to regenerator；
Cycle fluid outlet four is set on regenerator, and regenerator carries out heat exchange cooling to cycle fluid, and cycle fluid goes out
Mouth four is connected to heat exchanger；
Cycle fluid outlet five is set on heat exchanger, and heat exchanger further exchanges heat to cycle fluid cooling, cycle fluid
Outlet five is communicated with compressor；
Cycle fluid outlet six is set on compressor, and compressor provides pressurization, and cycle fluid outlet six connects with regenerator
It is logical；
It is additionally provided with cycle fluid on the regenerator and returns to outlet, cycle fluid returns to outlet to gasification furnace membrane type
The entrance of wall construction.
The gasification furnace sidewall is connected with carbon-containing fuel pipeline and gasifying agent pipeline, each leads into carbon-containing fuel and gasification
Agent.The carbon-containing fuel can use any carbon-containing fuel, be specifically as follows coal, heavy oil, trade waste, agriculture and forestry organic waste material,
House refuse etc.；The gasifying agent can be specifically as follows air, oxygen according to the property of carbon-containing fuel and the requirement of gasification technology
Or oxygen rich gas.
The gasification furnace is membrane wall gasification furnace, and supercritical carbon dioxide absorbs heat in gasification furnace membrane wall, protects simultaneously
Gasification furnace furnace wall is influenced from high temperature.
The heat exchanger can use cooler.
During the utility model specifically works：
Carbon-containing fuel enters together with gasifying agent carries out gasification reaction in the burner hearth of membrane wall gasification furnace, first to membrane wall
In cycle fluid supercritical carbon dioxide heated, the high-temperature synthesis gas generated in gasification furnace is right again by waste heat boiler
Supercritical carbon dioxide is heated, while being cooled down to high-temperature synthesis gas, leaves this system through cooling synthesis gas with used for other purposes；
Supercritical carbon dioxide after heating enters turbine acting power generation, and the cycle fluid being discharged after the completion of acting is in backheat
Exchange heat cooling in device, then further cools down in heat exchanger, and the temperature of cycle fluid is lowered, then passes through compressor boost,
And the waste heat of working medium after acting is absorbed in regenerator, enter back into the membrane wall heat absorption of gasification furnace, i.e. supercritical carbon dioxide work
After matter absorbs the radiations heat energy of burner hearth high temperature flame and synthesis gas, the Closed Brayton Power Cycle with backheat is carried out.
To improve system thermal efficiency, the supercritical carbon dioxide before entering compressor is cooled down using gasifying agent,
Gasifying agent is preheated in heat exchanger.
System provided by the utility model has very strong adaptability and flexibility, and specific manifestation is as follows：
1, raw material selection is flexible：It is not limited to coal, any carbon-containing fuel can be used, coal, heavy oil, industrial waste can be used
Object, agriculture and forestry organic waste material, house refuse etc..
2, gasification technology selection is flexible：Under the premise of gasification furnace has membrane wall structure, can be used fixed bed, fluidized bed or
Airflow bed gasification furnace.
3, gasifying agent selection is flexible：It is not limited to oxygen, can be selected according to the property of carbon-containing fuel and the requirement of gasification technology,
Air, oxygen or oxygen rich gas etc. can be used.
4, it can be integrally considered as based on system simply, with backheat, the Brayton Cycle system with forms such as compressions.
5, multiple heat exchangers can be integrally considered as based on system to be recycled system thermal energy.
Detailed description of the invention
Fig. 1 is the principles of the present invention schematic diagram.
Wherein, appended drawing reference is：1. gasification furnace, 2. waste heat boiler, 3. turbine, 4. regenerator, 5. cooler, 6. compresses
Machine, 1 carbon-containing fuel, 2 gasifying agents, 3 synthesis gas, 4 supercritical carbon dioxides.
Specific embodiment
As shown in Figure 1, the utility model devises a kind of overcritical titanium dioxide of the carbon-containing fuel based on membrane wall gasification furnace
Carbon electricity generation system is the Brayton Cycle system with backheat.The system include by gasification furnace 1., waste heat boiler 2., turbine 3., return
Hot device 4., cooler 5., the circulation loop that is 6. formed of compressor, 1. the gasification furnace is membrane wall gasification furnace, the gasification furnace
1. side wall is connected with carbon-containing fuel pipeline and gasifying agent pipeline, carbon-containing fuel 1 and gasifying agent 2 are each led into.
Be provided on the circulation loop of the system cycle fluid outlet one, cycle fluid outlet two, cycle fluid outlet three,
Cycle fluid outlet four, cycle fluid outlet five, cycle fluid export six, and the cycle fluid in circulation loop is overcritical dioxy
Change carbon 4；Wherein：
Cycle fluid outlet one is set to the outlet of gasification furnace 1. membrane wall structure, cycle fluid outlet one and waste heat boiler
2. being connected to；
Cycle fluid outlet two be set to waste heat boiler 2. on, 3. cycle fluid outlet two is connected to turbine；
Cycle fluid outlet three is set on the end of turbine 3., and cycle fluid is for power generation of doing work, cycle fluid outlet
4. three are connected to regenerator；
Cycle fluid outlet four be set to regenerator 4. on, 4. regenerator carries out heat exchange cooling, circulation industrial to cycle fluid
5. matter outlet four is connected to cooler；
Cycle fluid outlet five be set to cooler 5. on, 5. cooler further exchanges heat to cycle fluid cooling, recycle
6. sender property outlet five is connected to compressor；
Cycle fluid outlet six be set to compressor 6. on, 6. compressor provides pressurization, cycle fluid outlet six and backheat
4. device is connected to；
The regenerator 4. on be additionally provided with cycle fluid return outlet, cycle fluid return outlet to gasification furnace 1.
The entrance of membrane wall structure.
Carbon-containing fuel 1 and gasifying agent 2 enter in the burner hearth of membrane wall gasification furnace 1. together carries out gasification reaction, first to film
Cycle fluid supercritical carbon dioxide 4 in formula wall is heated, and 1. the interior high-temperature synthesis gas 3 generated passes through waste heat boiler to gasification furnace
2. furnace again heats supercritical carbon dioxide 4, while cooling down to synthesis gas 3, leaves this system through cooling synthesis gas 3
With used for other purposes；3. supercritical carbon dioxide 4 after heating does work power generation into turbine, the cycle fluid of discharge exists after the completion of acting
Regenerator 4. in heat exchange cooling, then cooler 5. in further cool down, it is attached that the temperature of cycle fluid is reduced to critical point
Closely, then by compressor be 6. pressurized, and regenerator 4. in absorb acting after working medium waste heat, enter back into the membrane type of gasification furnace 1.
Supercritical carbon dioxide 4 6. wall heat absorption enters compressor using 2 pairs of gasifying agent before cools down.
Claims (7)
1. the carbon-containing fuel supercritical carbon dioxide electricity generation system based on membrane wall gasification furnace, it is characterised in that：Including at least by
The circulation loop that gasification furnace, waste heat boiler, turbine, regenerator, heat exchanger, compressor are formed, is provided with circulation on circulation loop
Sender property outlet one, cycle fluid outlet two, cycle fluid outlet three, cycle fluid outlet four, cycle fluid export five, circulation industrial
Matter exports six, and the cycle fluid in circulation loop is supercritical carbon dioxide；Wherein：Cycle fluid outlet one is set to gasification furnace
The outlet of membrane wall structure, cycle fluid outlet one are connected to waste heat boiler；Cycle fluid outlet two is set on waste heat boiler,
Continue the temperature of raising cycle fluid using waste heat boiler, while synthesis gas being given to cool down, cycle fluid outlet two is connected to turbine；
Cycle fluid outlet three is set on the end of turbine, and cycle fluid is for power generation of doing work, cycle fluid outlet three and regenerator
Connection；Cycle fluid outlet four is set on regenerator, and regenerator carries out heat exchange cooling, cycle fluid outlet four to cycle fluid
It is connected to heat exchanger；Cycle fluid outlet five is set on heat exchanger, and heat exchanger further exchanges heat to cycle fluid cooling, is recycled
Sender property outlet five is communicated with compressor；Cycle fluid outlet six is set on compressor, and compressor provides pressurization, and cycle fluid goes out
Mouth six is connected to regenerator；It is additionally provided with cycle fluid on the regenerator and returns to outlet, cycle fluid returns to outlet extremely
The entrance of gasification furnace membrane wall structure.
2. the carbon-containing fuel supercritical carbon dioxide electricity generation system according to claim 1 based on membrane wall gasification furnace,
It is characterized in that：The gasification furnace sidewall is connected with carbon-containing fuel pipeline and gasifying agent pipeline, each leads into carbon-containing fuel and gasification
Agent.
3. the carbon-containing fuel supercritical carbon dioxide electricity generation system according to claim 2 based on membrane wall gasification furnace,
It is characterized in that：The carbon-containing fuel uses any carbon-containing fuel.
4. the carbon-containing fuel supercritical carbon dioxide electricity generation system according to claim 3 based on membrane wall gasification furnace,
It is characterized in that：The carbon-containing fuel is one of coal, heavy oil, trade waste, agriculture and forestry organic waste material, house refuse.
5. the carbon-containing fuel supercritical carbon dioxide electricity generation system according to claim 3 based on membrane wall gasification furnace,
It is characterized in that：The gasifying agent is according to the property of carbon-containing fuel and the requirement of gasification technology, specially air, oxygen or oxygen rich air
Body.
6. the carbon-containing fuel supercritical carbon dioxide electricity generation system according to claim 1 based on membrane wall gasification furnace,
It is characterized in that：The gasification furnace is membrane wall gasification furnace, and supercritical carbon dioxide absorbs heat in gasification furnace membrane wall, protects simultaneously
Gasification furnace furnace wall is influenced from high temperature.
7. the carbon-containing fuel supercritical carbon dioxide electricity generation system according to claim 1 based on membrane wall gasification furnace,
It is characterized in that：The heat exchanger uses cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820428144.0U CN208138013U (en) | 2018-03-28 | 2018-03-28 | Carbon-containing fuel supercritical carbon dioxide electricity generation system based on membrane wall gasification furnace |
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| CN201820428144.0U CN208138013U (en) | 2018-03-28 | 2018-03-28 | Carbon-containing fuel supercritical carbon dioxide electricity generation system based on membrane wall gasification furnace |
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| CN208138013U true CN208138013U (en) | 2018-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080843A (en) * | 2019-05-28 | 2019-08-02 | 西安热工研究院有限公司 | A kind of supercritical carbon dioxide Brayton cycle working medium purification system and method |
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2018
- 2018-03-28 CN CN201820428144.0U patent/CN208138013U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080843A (en) * | 2019-05-28 | 2019-08-02 | 西安热工研究院有限公司 | A kind of supercritical carbon dioxide Brayton cycle working medium purification system and method |
| CN110080843B (en) * | 2019-05-28 | 2023-11-10 | 西安热工研究院有限公司 | Supercritical carbon dioxide Brayton cycle working medium purification system and method |
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