CN206016976U - A kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide - Google Patents
A kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide Download PDFInfo
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Abstract
A kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide of this utility model, not only generating efficiency is high, discharged nitrous oxides are low, and carbon dioxide is easy to trap, and can organically combine chemical chain burning technology and the generating of supercritical carbon dioxide cycle.Which includes burning chemistry chains system and supercritical carbon dioxide cycle generating system；Burning chemistry chains system includes air reactor and combustion reactor；Supercritical carbon dioxide cycle generating system includes carbon dioxide turbine and is connected to the carbon-dioxide gas compressor and electromotor of its drive end；Chemical chain burning technology is combined by this utility model with supercritical carbon dioxide circulating generation, while realizing generating electricity using supercritical carbon dioxide, trapping recovery is carried out to carbon dioxide, supplemented with supercritical carbon dioxide blood circulation is entered after the carbon dioxide pressurization of part trapping, the partial compromise amount in blood circulation is made up.
Description
Technical field
This utility model is related to advanced efficient field of thermal power, specially a kind of coal base based on supercritical carbon dioxide
Chemistry of fuel chain combustion power generation system.
Background technology
In China, coal-fired thermal power generation is one of maximum emission source of carbon dioxide, researchs and develops new coal derived fuel and sends out
The clean and effective of coal resources in China is utilized power technology and minimizing CO2 emission is significant.Current fire coal
Process for carbon dioxide recovery includes pre-combustion capture, trapping and post-combustion capture etc. in burning, although coal-fired dioxy can be realized
Change the recovery of carbon, but the carbon dioxide for obtaining high concentration can significantly reduce the generating efficiency of electricity generation system.Burning chemistry chains skill
Art, it is achieved that the unmixed combustion of fuel and air, replaces air, in fuel reactor, fuel and the carrier of oxygen with the carrier of oxygen
Reaction, completes the oxidation of fuel, and the carrier of oxygen being reduced returns to air reactor, carries out oxidation reaction with air, realizes oxygen
The regeneration of carrier.Chemical chain burning technology avoids the directly contact of fuel and air, can substantially reduce traditional fire coal mode
The generation of lower nitrogen oxides, reduces the processing cost of nitrogen oxides, in fuel reactor after fuel complete oxidation, product master
If carbon dioxide and vapor, it is only necessary to which simple condensation process can be obtained by highly purified carbon dioxide, it is easy to follow-up
Trapping and seal up for safekeeping.Burning chemistry chains can both reduce the discharge of nitrogen oxides compared with traditional coal-fired mode, reduce nitrogen oxygen
The processing cost of compound, can obtain highly purified carbon dioxide again, reduce the cost of collecting carbonic anhydride.
Additionally, supercritical carbon dioxide has the features such as energy density is big, heat transfer efficiency is high, be environmental protection, cleaning natural
Working fluid.Generation technology with supercritical carbon dioxide as working medium be also current new, efficient in the world generation technology it
One.
If it is possible to develop a kind of new electricity generation system, chemical chain burning technology can be faced by the system with super
Boundary's carbon dioxide recycle generation technology is organically combined, then will necessarily bring huge change to traditional coal fired power generation of China
Change.But, all it is with conventional air with regard to coal derived fuel supercritical carbon dioxide circulating generation in published report at present
Based on combustion-supporting, contactless indirect heat exchange, such as 105526576 A of 104727868 A of Chinese patent CN and CN etc. also there have been no
The report that burning chemistry chains and supercritical carbon dioxide circulating generation are combined.
Utility model content
For problems of the prior art, this utility model provides a kind of coal base based on supercritical carbon dioxide and fires
Material burning chemistry chains electricity generation system, not only generating efficiency is high, and discharged nitrous oxides are low, and carbon dioxide is easy to trap, and can
Chemical chain burning technology and supercritical carbon dioxide cycle are generated electricity and is organically combined.
This utility model is to be achieved through the following technical solutions：
A kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide, including burning chemistry chains system
With supercritical carbon dioxide cycle generating system；
Described burning chemistry chains system includes air reactor and combustion reactor；The input of air reactor is passed through
Air, the solid outlet output carrier of oxygen connect the input of combustion reactor, and gas outlet's output high temperature oxygen denuded air connects successively
Connect the high-temperature medium pipeline of high-temperature heat-exchanging and purify emptying device；The input of combustion reactor is additionally added coal derived fuel, gas
Body outlet output high temperature carbon dioxide and vapor connect carbon dioxide capture device through the high-temperature medium pipeline of cryogenic heat exchanger,
One solid outlet discharges lime-ash, another solid outlet output reduction-state carrier of oxygen connection air reactor input；
Described supercritical carbon dioxide cycle generating system includes carbon dioxide turbine and is connected to its drive end
Carbon-dioxide gas compressor and electromotor；The outfan of carbon-dioxide gas compressor is successively through the cryogenic media pipeline of cryogenic heat exchanger
The input of carbon dioxide turbine is connected to the cryogenic media pipeline of high-temperature heat-exchanging；The outfan connection of carbon dioxide turbine
The input of carbon-dioxide gas compressor；
The partial CO 2 trapped through carbon dioxide capture device is passed through pressurized carbon dioxide through carbon dioxide pressurization device
The input of contracting machine.
Preferably, the outfan of carbon-dioxide gas compressor is provided with preheater；The high temperature conduit of preheater is connected to high temperature
Between the high-temperature medium outfan of heat exchanger and purification emptying device, the cryogenic pipe connection carbon-dioxide gas compressor of preheater
Outfan.
Preferably, the outfan of carbon-dioxide gas compressor is provided with regenerator；The high temperature conduit connection titanium dioxide of regenerator
The outfan of carbon turbine, the cryogenic pipe of regenerator connect the outfan of carbon-dioxide gas compressor.
Preferably, through cooler after the outfan of the outfan of carbon dioxide pressurization device and carbon dioxide turbine pipe
High-temperature medium pipeline connects the input of carbon-dioxide gas compressor.
Preferably, height of the gas output end output high temperature carbon dioxide and vapor of combustion reactor through cryogenic heat exchanger
It is divided into two-way after warm medium pipeline, connects carbon dioxide capture device, another road part low-temperature carbon dioxide and vapor all the way
It is connected to the input of combustion reactor.
Preferably, carbon dioxide capture device trapping another part carbon dioxide output carry out carbon dioxide sequestration or he
Use system.
Compared with prior art, this utility model has following beneficial technique effect：
Chemical chain burning technology is combined by this utility model with supercritical carbon dioxide circulating generation, is being realized using super
While critical carbon dioxide generates electricity, trapping recovery is carried out to carbon dioxide, can be with after the carbon dioxide pressurization of part trapping
Supercritical carbon dioxide blood circulation is replenished, the partial compromise amount in blood circulation is made up.
Further, high-temperature flue gas are generated in the air reactor of burning chemistry chains and be practically free of nitrogen oxides, with tradition
Coal fired power generation is compared, and is reduced the cost for administering nitrogen oxides, is reduced the discharge of nitrogen oxides.
Further, carbon dioxide and vapor, the ratio of carbon dioxide are given off in the fuel reactor of burning chemistry chains
Example up to 70%, after simple cooling, carbon dioxide ratio can be higher, substantially reduce collecting carbonic anhydride and seal up for safekeeping into
This, contributes to reducing CO2 emission.
Description of the drawings
Fig. 1 is the structural representation of system described in this utility model example.
In figure：1 is air, 2 is air reactor, 3 is high temperature oxygen denuded air, 4 is the carrier of oxygen, 5 is coal derived fuel, 6 are
Fuel reactor, 7 be the reduction-state carrier of oxygen, 8 be lime-ash, 9 be high temperature carbon dioxide and vapor, 10 be cryogenic heat exchanger, 11
For part low-temperature carbon dioxide and vapor, 12 be carbon dioxide capture device, 13 be carbon dioxide sequestration or he with system, 14
For high-temperature heat-exchanging, 15 be preheater, 16 for purify emptying device, 17 be carbon-dioxide gas compressor, 18 be carbon dioxide turbine,
19 is electromotor, 20 is regenerator, 21 is cooler, 22 is carbon dioxide pressurization device.
Specific embodiment
This utility model is described in further detail with reference to specific embodiment, described is to this utility model
Explanation rather than restriction.
With reference to Fig. 1, a kind of coal derived fuel burning chemistry chains based on supercritical carbon dioxide described in the utility model are sent out
Electric system, including the air reactor 2, fuel reactor 6 and the carbon dioxide capture device 12 that are sequentially connected, is arranged on fuel anti-
The cryogenic heat exchanger 10 on 12 connecting line of device 6 and carbon dioxide capture device is answered, 10 low temperature of cryogenic heat exchanger is connected in turn
The cryogenic media pipeline of the high-temperature heat-exchanging 14 of medium outfan, carbon dioxide turbine 18,20 high-temperature medium pipeline of regenerator, cold
But 21 high-temperature medium pipeline of device, carbon-dioxide gas compressor 17,15 cryogenic media pipeline of preheater, 20 cryogenic media pipeline of regenerator
With 10 cryogenic media input of cryogenic heat exchanger, carbon-dioxide gas compressor 17 and electromotor 19 are connected to carbon dioxide turbine 18
Outfan, an outfan of carbon dioxide capture device 12 is through carbon dioxide pressurization device 22 and 21 high-temperature medium pipe of cooler
Road input connection.
Wherein, the waste gas outlet of air reactor 2 is connected with high-temperature heat-exchanging 14, and high-temperature heat-exchanging 14 is exported and preheater
15 connections, are connected with purification emptying device 16 afterwards, and 2 solid outlet of air reactor is connected with fuel reactor 6, fuel reaction
The gas outlet of device 6 is connected with cryogenic heat exchanger 10, and the outlet of cryogenic heat exchanger 10 is connected with 12 entrance of carbon dioxide capture device,
6 one solid outlets of fuel reactor are connected with air reactor 2, and another solid outlet is arranged outer for lime-ash 8.Carbon dioxide is caught
Acquisition means 12 export a part and are connected with 22 import of pressue device, another part and carbon dioxide sequestration or he with 13 phase of system
Even, the outlet of pressue device 22 is connected with 21 import of cooler in supercritical carbon dioxide cycle generating system.Cooler 21
Outlet is connected with the import of carbon-dioxide gas compressor 17, and the outlet of carbon-dioxide gas compressor 17 is connected with 15 import of preheater,
The outlet of preheater 15 is connected with 20 import of regenerator, and the outlet of regenerator 20 is connected with 10 import of cryogenic heat exchanger, cryogenic heat exchanger
10 outlet is connected with the import of high-temperature heat-exchanging 14, the import phase of the outlet of high-temperature heat-exchanging 14 and carbon dioxide turbine 18
Connection, the outlet of carbon dioxide turbine 18 are connected with 20 high-temperature medium pipeline of regenerator, 20 high-temperature medium tube outlet of regenerator
After merging with the outlet of carbon dioxide pressurization device 22, the import with cooler 21 is connected.The cooling working medium of cooler 21 is adopted
Water or air.
When this utility model is used, there is oxidation reaction with the reduction-state carrier of oxygen 7 in 1 air inlet reactor 2 of air, produce
, there is reduction reaction, generate also in raw high temperature oxygen denuded air 3 and the carrier of oxygen 4,5 incoming fuel reactor of the carrier of oxygen 4 and coal derived fuel
The ortho states carrier of oxygen 7, lime-ash 8 and high temperature carbon dioxide and vapor 9, the reduction-state carrier of oxygen 7 are again introduced into air reactor 2, high
Warm carbon dioxide and vapor 9 heat supercritical carbon dioxide through cryogenic heat exchanger 10, afterwards part low-temperature carbon dioxide and
Vapor 11 returns fuel reactor 6, participates in reaction, and remaining carbon dioxide and vapor are through carbon dioxide capture device
12, the carbon dioxide part being captured after carbon dioxide pressurization device 22 adds to carbon dioxide cycle system, makes up
The leakage loss of carbon dioxide cycle system, another part carbon dioxide sequestration or he use 13, supplementary fresh carbon dioxide with
Cooler 21 is entered after the weary gas supercritical carbon dioxide mixing after regenerator 20, and mixing supercritical carbon dioxide is passed through
After cooling enter carbon-dioxide gas compressor 17, through overcompression after, supercritical carbon dioxide sequentially enters preheater 15, regenerator
20, cryogenic heat exchanger 10 and high-temperature heat-exchanging 14 absorb heat, become the supercritical carbon dioxide of High Temperature High Pressure, enter afterwards
Carbon dioxide turbine 18 does work, and carbon dioxide turbine 18 drives the compression carbon dioxide of carbon-dioxide gas compressor 17, drives electromotor
19 generate electricity, and it is preheated that the weary gas supercritical carbon dioxide after acting transfers heat to preheated device 15 through regenerator 20
Supercritical carbon dioxide, is mixed with the fresh carbon dioxide from pressurized carbon dioxide compression apparatus 22 afterwards, enters cooler 21 cold
But enter carbon-dioxide gas compressor 17 afterwards, start another pressurization, heating and acting process.
Wherein, the gas-phase product that fuel reactor 6 is generated includes the carbon dioxide of mass fraction about 85%, mass fraction
About 15% vapor and a small amount of impurity, described impurity include carbon monoxide and hydrogen etc..
Specifically comprise the steps during utility model works.
Step 1, adds coal derived fuel 5 in fuel reactor 6, steams in the carrier of oxygen 4 and part low-temperature carbon dioxide and water
In the presence of gas 11, there is redox reaction, through being reacted to the reduction-state carrier of oxygen 7, coal derived fuel 5 reacts the carrier of oxygen 4
After become lime-ash 8, while generating carbon dioxide and vapor 9；
Step 2, in air reactor 2, air 1 is reacted with the reduction-state carrier of oxygen 7, during the reduction-state carrier of oxygen 7 is by air 7
Dioxygen oxidation become the carrier of oxygen 4, release substantial amounts of heat, generate high temperature oxygen denuded air 3；
Step 3, high temperature oxygen denuded air 3 transfer heat to supercritical carbon dioxide through high-temperature heat-exchanging 14, carry out
Four heating；
Step 4, the temperature reduction after high-temperature heat-exchanging 14 of oxygen denuded air 3 of high temperature, through preheater 15, heat is passed
Supercritical carbon dioxide is passed, first time heating is carried out, the purified emptying device 16 of oxygen denuded air is discharged afterwards；
Step 5, high temperature carbon dioxide and vapor 9 that fuel reactor 6 is generated, through cryogenic heat exchanger 10, by heat
Supercritical carbon dioxide is passed to, third time heating is carried out；
Step 6, high temperature carbon dioxide and vapor 9 that fuel reactor 6 is generated, after cryogenic heat exchanger 10, part
Low-temperature carbon dioxide and vapor 11 return fuel reactor 6 and participate in redox reaction, remaining low-temperature carbon dioxide and water
After carbon dioxide capture device 12, a part enters supercritical carbon dioxide blood circulation through pressue device 22 to steam,
Another part entrance is sealed up for safekeeping or he uses system 13；
Step 7, supercritical carbon dioxide is through preheater 15, regenerator 20, cryogenic heat exchanger 10 and high-temperature heat-exchanging 14
After four heating, become the supercritical carbon dioxide of High Temperature High Pressure, enter carbon dioxide turbine 18, promote carbon dioxide turbine 18
Acting, while the compression mixing supercritical carbon dioxide of carbon-dioxide gas compressor 17 is driven, drives electromotor 19 to generate electricity；
Step 8, the weary gas supercritical carbon dioxide after doing work in carbon dioxide turbine 18 is through carbon dioxide turbine 18
Outlet, enter regenerator 20, transfer heat to supercritical carbon dioxide, carry out second heating；
Step 9, from the weary gas supercritical carbon dioxide out of regenerator 20 with from the fresh of titanium dioxide pressue device 22
Carbon dioxide mix, enters in cooler 21；
Step 10, after mixing supercritical carbon dioxide is cooled down in cooler 21, enters compressor 17 and compresses；
Step 11, mixing supercritical carbon dioxide obtain supercritical carbon dioxide after the compression of compressor 17, enter successively
After entering the heating of preheater 15, regenerator 20, cryogenic heat exchanger 10 and high-temperature heat-exchanging 14 4 times, become the supercritical of High Temperature High Pressure
Carbon dioxide, enters back into carbon dioxide turbine 18, completes cyclic process.
In this preferred embodiment, described coal derived fuel 5 can be raw coal, coke, the semicoke after pyrolysis of coal, coal pyrolysis gas,
Coal based synthetic gas etc..
Structure optimization of this utility model by the optimization, air reactor 2 and fuel reactor 6 of the carrier of oxygen 4 so that change
The efficiency for learning chain combustion system can be improved constantly, and accordingly, the parameter of supercritical carbon dioxide working medium also can be higher, electricity generation system
Efficiency can also improve constantly；So as to reduce discharged nitrous oxides, reduce nitrogen oxides treatment cost, reduce carbon dioxide
Trapping cost.
It is pointed out that above-described embodiment is only for illustrating technology design of the present utility model and feature, specific enforcement
Method, such as coal derived fuel type, stream of supercritical carbon dioxide can still be modified through the order etc. of each heat exchanger and be improved, but
All without therefrom away from scope of the present utility model and the essence spirit of defined in claims.
Claims (6)
1. a kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide, it is characterised in that including chemistry
Chain combustion system and supercritical carbon dioxide cycle generating system；
Described burning chemistry chains system includes air reactor (2) and combustion reactor (6)；The input of air reactor (2)
End is passed through air (1), and the input of the solid outlet output carrier of oxygen (4) connection combustion reactor (6), gas outlet export high temperature
Oxygen denuded air (3) is sequentially connected the high-temperature medium pipeline of high-temperature heat-exchanging (14) and purifies emptying device (16)；Combustion reactor
(6) input is additionally added coal derived fuel (5), and gas outlet's output high temperature carbon dioxide and vapor (9) are through cryogenic heat exchanger
(10) high-temperature medium pipeline connection carbon dioxide capture device (12), a solid outlet discharge lime-ash (8), another solid
The outlet output reduction-state carrier of oxygen (7) connection air reactor (2) input；
Described supercritical carbon dioxide cycle generating system includes carbon dioxide turbine (18) and is connected to its drive end
Carbon-dioxide gas compressor (17) and electromotor (19)；The outfan of carbon-dioxide gas compressor (17) is successively through cryogenic heat exchanger
(10) cryogenic media pipeline and the cryogenic media pipeline of high-temperature heat-exchanging (14) is connected to the input of carbon dioxide turbine (18)
End；The input of outfan connection carbon-dioxide gas compressor (17) of carbon dioxide turbine (18)；
Titanium dioxide is passed through through the partial CO 2 that carbon dioxide capture device (12) is trapped through carbon dioxide pressurization device (22)
The input of carbon compressor (17).
2. a kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide according to claim 1,
Characterized in that, the outfan of carbon-dioxide gas compressor (17) is provided with preheater (15)；The high temperature conduit of preheater (15) connects
It is connected on the high-temperature medium outfan of high-temperature heat-exchanging (14) and purifies between emptying device (16), the cryogenic pipe of preheater (15)
The outfan of connection carbon-dioxide gas compressor (17).
3. a kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide according to claim 1,
Characterized in that, the outfan of carbon-dioxide gas compressor (17) is provided with regenerator (20)；The high temperature conduit of regenerator (20) connects
Connect the outfan of carbon dioxide turbine (18), the output of cryogenic pipe connection carbon-dioxide gas compressor (17) of regenerator (20)
End.
4. a kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide according to claim 1,
Characterized in that, through cooling after the outfan of the outfan of carbon dioxide pressurization device (22) and carbon dioxide turbine (18) pipe
The input of high-temperature medium pipeline connection carbon-dioxide gas compressor (17) of device (21).
5. a kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide according to claim 1,
Characterized in that, the gas output end output high temperature carbon dioxide and vapor (9) of combustion reactor (6) are through cryogenic heat exchanger
(10) it is divided into two-way after high-temperature medium pipeline, all the way connection carbon dioxide capture device (12), another road part low temperature dioxy
Change the input that carbon and vapor (11) are connected to combustion reactor (6).
6. a kind of coal derived fuel burning chemistry chains electricity generation system based on supercritical carbon dioxide according to claim 1,
Characterized in that, carbon dioxide capture device (12) trap another part carbon dioxide output carry out carbon dioxide sequestration or he
With system (13).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438043A (en) * | 2016-09-13 | 2017-02-22 | 西安热工研究院有限公司 | Coal-based fuel chemical-looping combustion power generation system and method based on supercritical carbon dioxide |
| CN108439336A (en) * | 2018-05-08 | 2018-08-24 | 上海发电设备成套设计研究院有限责任公司 | A kind of zero-emission cogeneration of hydrogen and electricity system |
| CN112459858A (en) * | 2020-11-09 | 2021-03-09 | 东南大学 | Chemical looping combustion coupled supercritical CO2Cyclic cogeneration system |
-
2016
- 2016-09-13 CN CN201621053368.5U patent/CN206016976U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438043A (en) * | 2016-09-13 | 2017-02-22 | 西安热工研究院有限公司 | Coal-based fuel chemical-looping combustion power generation system and method based on supercritical carbon dioxide |
| CN108439336A (en) * | 2018-05-08 | 2018-08-24 | 上海发电设备成套设计研究院有限责任公司 | A kind of zero-emission cogeneration of hydrogen and electricity system |
| CN108439336B (en) * | 2018-05-08 | 2024-02-02 | 上海发电设备成套设计研究院有限责任公司 | Zero-emission hydrogen electric cogeneration system |
| CN112459858A (en) * | 2020-11-09 | 2021-03-09 | 东南大学 | Chemical looping combustion coupled supercritical CO2Cyclic cogeneration system |
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