CN108151358B - Renewable energy source drive-based combined cooling, heating, power and solid carbon supply multi-energy flow area energy station - Google Patents
Renewable energy source drive-based combined cooling, heating, power and solid carbon supply multi-energy flow area energy station Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/04—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being ammonia evaporated from aqueous solution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/02—Compression-sorption machines, plants, or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/08—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using ejectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
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- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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Abstract
The invention discloses a renewable energy source-driven cooling, heating, power and solid carbon combined supply multi-energy flow area energy station, which comprises an ammonia process CO2Trapping system, kalina power generation system and injection type refrigerating system, ammonia process CO2The capture system and the kalina power generation system are coupled with a renewable heating system, and the renewable heating system is driven by photoelectricity to carry out CO (carbon monoxide) production by ammonia process2Capture system with each solution pump in the kalina power generation system, renewable heating system still includes: one path provides heat drive for the generator through the energy distributor, and the other path is input to the heat supply end through the energy distributor. The invention can realize the utilization of the waste heat flue gas, simultaneously can carry out carbon sealing storage of the waste heat flue gas, and simultaneously realizes the utilization of the heat energy in the waste heat flue gas and the capture of carbon sink.
Description
Technical Field
The invention belongs to the technical field of multi-connection supply, and particularly relates to a renewable energy-driven combined cooling, heating, power and solid carbon supply multi-energy flow area energy station.
Background
Energy conservation and emission reduction are important targets of current energy structure adjustment and are important measures for healthy development of national economy. How to realize energy conservation, emission reduction and gradient utilization of energy at the same time becomes a hot topic. Carbon sequestration based regional energy stations is an important measure of multi-energy source complementation. Chemical absorption methods using chemical absorbents, particularly chemical absorption methods represented by the ammonia process carbon dioxide fixation technology, are the focus of attention. Renewable energy is a widely existing renewable energy source, and the absorption and analysis process of the ammonia process carbon dioxide fixation technology can just realize the pressure increase of solvent gas and form high-temperature and high-pressure NH3And CO2The mixed steam of (1). If the renewable thermoelectric driving power generation cycle process working medium pump can be replaced, the self-electricity consumption in the power generation process can be effectively reduced, and meanwhile, the energy consumption in part of the carbon fixation process is replaced. The existing energy station rarely considers the energy consumption of a pump, and can be regenerated as a thermoelectric driving energy station to realize the regional energy utilization of cold, hot and solid carbon.
In recent years, the development of medium-low temperature dual-medium power generation cycle, especially kalina power generation cycle, hasThe power generation efficiency of double working medium circulation is effectively improved. Furthermore, if the residual energy of the exhaust steam after power generation can be further used for other purposes, the perfection of the energy station is further improved if the requirement of a large amount of refrigeration loads is met. Therefore, the invention takes the generation and absorption as basic processes by means of NH3、H2O and CO2The thermophysical property of the ternary working medium organically combines the ammonia process with the CO2The catching energy source station, the kalina power generation energy source station, the injection type refrigeration energy source station and the renewable thermoelectric driving energy source station are coupled to form a renewable thermoelectric driving power generation, refrigeration, heat supply and carbon fixation coupled energy source station, meanwhile, the power generation, refrigeration, heat supply and carbon fixation processes are realized, the energy consumption in the carbon fixation process is effectively reduced, and the energy source station has higher energy utilization efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a renewable energy-driven combined cooling, heating, power and solid carbon supply multi-energy flow area energy station.
In order to solve the technical problems proposed in the background art, the invention adopts the technical scheme that: a renewable energy source-driven multi-energy-region energy station for combined supply of cooling, heating, power and solid carbon comprises an ammonia process CO2Trapping system, kalina power generation system and injection type refrigerating system, ammonia process CO2The trapping system and the kalina power generation system share a generator, a heat regenerator, a third solution pump, a second throttle valve and an absorber, the kalina power generation system and the injection type refrigeration system share an injector and a condenser, and the ammonia process CO2The capture system and the kalina power generation system are coupled with a renewable heating system, and the renewable heating system is driven by photoelectricity to carry out CO (carbon monoxide) production by ammonia process2Each solution pump in the trapping system and the kalina power generation system; the renewable heating system further comprises: one path of heat drives the generator, and the other path of heat is input to a heat supply end.
The renewable heating system is driven by renewable energy through photovoltaic power generation equipment.
The one-path heat driving generator of the renewable heating system is adoptedThe raw energy is input through a heat collector and an energy distributor, and the other side of the generator is provided with a device for conveying high-concentration CO2A renewable energy outlet pipe for flue gas is connected to the ammonia process CO2A capture system.
Said ammonia process CO2The trapping system comprises an absorption tower, a first solution pump, a generator, a heat regenerator, a second throttle valve, an absorber and a second solution pump which are sequentially connected through pipelines, wherein a third solution pump is connected between the heat regenerator and the absorber;
the first solution pump, the second solution pump and the third solution pump are all driven by renewable energy sources through electric energy provided by photovoltaic power generation equipment.
The renewable energy source is preferably solar energy.
The side line of the absorption tower is provided with low-concentration CO2Flue gas outlet pipe, said low concentration CO2And the flue gas outlet pipe is conveyed to the carbon sequestration and storage device through a multi-stage compression cooling device.
The kalina power generation system comprises a generator, a two-phase expander, a T-shaped pipe separator, an ejector, a condenser, an absorber, a third solution pump and a heat regenerator which are sequentially connected through pipelines, wherein the two-phase expander is connected with a power generator, and the T-shaped pipe separator is provided with high-purity CO2And a flue gas outlet.
The injection type refrigeration system comprises an ejector, a condenser, a first throttling valve and an evaporator which are connected in sequence through pipelines.
The evaporator is used for cooling.
And the other path of the renewable heating system is input to a heating end through a heat collector, an energy distributor and a heat exchanger.
The invention has the beneficial effects that:
1. the invention constructs a renewable power generation and heat supply driving energy station and an NH3The combined energy station for the basic working medium has higher energy utilization efficiency, effectively reduces the energy consumption problem in the carbon fixation trapping process, and simultaneously realizes the power generation, refrigeration, heat supply and carbon fixation processes. The waste heat flue gas can be carbon-sealed while the waste heat flue gas waste heat utilization is realized, and simultaneouslyAnd the utilization of heat energy in waste heat flue gas and the capture of carbon sink are realized.
2. The invention develops water and electricity actively and steadily, coordinates and promotes the development of wind electricity comprehensively, promotes the diversified utilization of solar energy, develops biomass energy according to local conditions, accelerates the development and utilization of geothermal energy, and promotes the demonstration application of ocean energy power generation. The carbon sequestration technology is actively explored on the basis of fully and reasonably utilizing renewable energy sources, and CO which has great contribution to greenhouse effect for conversion and fixation2Lays a foundation for research.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Reference numerals: 1-absorption tower, 2-first solution pump, 3-generator, 4-two-phase expander, 5-generator, 6-T type pipe separator, 7-ejector, 8-condenser, 9-evaporator, 10-first throttle valve, 11-absorber, 12-second solution pump, 13-heat regenerator, 14-third solution pump, 15-second throttle valve, 16-energy distributor, 17-renewable energy outlet pipe, 18-low concentration CO2Flue gas outlet pipe, 19-high purity CO2The method comprises the following steps of flue gas outlet, 20-heat exchanger, 21-heat supply end, 22-multi-stage compression cooling device, 23-carbon fixation sealing device, 24-photovoltaic power generation equipment, 25-renewable energy source and 26-heat collector.
Detailed Description
The invention is further illustrated by the following specific examples and the accompanying drawings. The examples are intended to better enable those skilled in the art to better understand the present invention and are not intended to limit the present invention in any way.
FIG. 1 is a schematic flow diagram of the present invention, wherein the energy station in the multi-energy flow region for combined supply of cooling, heating and carbon fixation driven by renewable energy is based on the absorption and analysis process of ammonia water solution, and is a coupling system for power generation, refrigeration, heat supply and carbon fixation capture, including CO method by ammonia2Trapping system, kalina power generation system and injection type refrigerating system and renewable heating system, renewable heating system photoelectric drive ammonia process CO2The capture system and each solution pump in the kalina power generation system, the renewable heating system in the embodiment is driven by the light and electricityRenewable energy source 25 is not limited to solar energy, wind energy, water power, biomass energy, but in this embodiment renewable energy source 25 is preferably solar energy, and generates electric energy through photovoltaic power generation device 24 to drive ammonia process CO2The first solution pump 2, the second solution pump 12, and the third solution pump 14 within the capture system and the kalina power generation system; the renewable heating system further comprises: one path of heat drives the generator 3, and the other path of heat is input to a heat supply end 21; the heat driving generator 3 of the embodiment adopts the renewable energy source 25 to be input into the generator 3 through the heat collector 26 and the energy distributor 16, and the other side of the generator 3 is provided with a device for delivering high-concentration CO2The flue gas renewable energy outlet pipe 17 is connected to the ammonia process CO2A capture system.
Said ammonia process CO2The capture system comprises an absorption tower 1, a first solution pump 2, a generator 3, a heat regenerator 13, a second throttle valve 15, an absorber 11 and a second solution pump 12 which are connected in sequence by pipelines, wherein a third solution pump 14 is connected between the heat regenerator 13 and the absorber 11;
the first solution pump 2, the second solution pump 12, and the third solution pump 14 are driven by electrical energy provided by a renewable energy source 25 through a photovoltaic power plant 24.
The side line of the absorption tower 1 is provided with low-concentration CO2Flue gas outlet pipe 18, the low concentration CO2The flue gas outlet pipe 18 is conveyed to a carbon sequestration and storage device 23 through a multi-stage compression cooling device 22;
the kalina power generation system comprises a generator 3, a two-phase expander 4, a T-shaped pipe separator 6, an ejector 7, a condenser 8, an absorber 11, a third solution pump 14 and a heat regenerator 13 which are sequentially connected through pipelines, wherein the two-phase expander 4 is connected with a power generator 5, and the T-shaped pipe separator 6 is provided with high-purity CO2A flue gas outlet 19;
thus, the ammonia process CO2The trapping system and the kalina power generation system realize the sharing of the generator 3, the heat regenerator 13, the third solution pump 14, the second throttle valve 15 and the absorber 11.
The jet type refrigeration system comprises an ejector 7, a condenser 8, a first throttle valve 10 and an evaporator 9 which are connected in sequence through pipelines, wherein the evaporator 9 is used for cooling;
therefore, the kalina power generation system and the injection type refrigeration system realize the sharing of the ejector 7 and the condenser 8.
The renewable heating system comprises a renewable energy source 25, a photovoltaic power generation device 24, a first solution pump 2, a second solution pump 12, a third solution pump 14, a heat collector 26, an energy distributor 16, a heat exchanger 20 and a heating end 21;
visible renewable heating system and ammonia process CO2The trap system realizes the common use of the first solution pump 2, the second solution pump 12, and the third solution pump 14.
The working process of the invention is as follows:
renewable energy 25 is supplied to the first solution pump 2 and the second solution pump 12 through the photovoltaic power generation device 24, is divided into two paths through the heat collector 26 and the energy distributor 16, and one path enters the generator 3 and drives the generator 3 to cool down to high-concentration CO with lower temperature2The flue gas is introduced into the side part of the absorption tower 1 through the renewable energy outlet pipe 17, and is absorbed by the ammonia water solution in the absorption tower 1 to obtain high-concentration CO2CO in flue gas2Then, it becomes low concentration CO2Low concentration CO of waste flue gas from absorption tower 12The flue gas is discharged from the flue gas outlet pipe 18; the other path of heat source outputs a heat source through a heat exchanger 20 to be supplied to a heat supply end 21; absorption of CO2The ammonia water solution is transported to the generator 3 through the first solution pump 2, and the generator 3 absorbs the heat output from the renewable energy source 25 to the heat collector 26 and then analyzes the heat to generate high-temperature high-pressure NH3And CO2Mixed steam, NH3And CO2The mixed steam enters a two-phase expansion machine 4 to do expansion work to drive a generator 5 to output electric energy; the exhaust gas after working enters a T-shaped pipe separator 6, and CO in the mixed steam is separated2By high purity CO2The flue gas is discharged from a flue gas outlet 19 to form CO with higher pressure2Pure gas. At the moment, the carbon fixation collection and the waste heat power generation circulation of the flue gas are completed.
Higher residual pressure NH3The exhaust gas enters the ejector 7, the pressure is reduced and the speed is increased in the nozzle of the ejector 7, the gas at the working medium outlet of the evaporator 9 is injected into the ejector 7, and the exhaust gas and the gas are mixed and expanded in the mixing chamber to reach the pressureThe condensing pressure of the refrigeration cycle, then entering the condenser 8 to be condensed to liquid state; one part of the liquid working medium from the condenser 8 enters a first throttling valve 10 and is decompressed and returned to the evaporator 9, so that the refrigeration cycle is realized, and the other part of the liquid working medium enters an absorber 11 and continues to carry out the carbon fixation capture and power generation cycle;
wherein, a part of the ammonia water concentrated solution in the absorber 11 is pressurized by the third solution pump 14 and then sent into the heat regenerator 13 and then enters the generator 3, and the other part of the ammonia water concentrated solution is pressurized by the second solution pump 12 and then enters the absorption tower 1 to absorb CO in the flue gas2Then the pressure is increased to the generator 3 through the first solution pump 2, and in the generator 3, a part of concentrated ammonia is concentrated with CO2The solution absorbs heat from the renewable energy source 25 and is heated to boiling, producing high temperature and high pressure NH3With CO2The mixed steam enters a two-phase expander 4, and part of concentrated ammonia is concentrated with CO2The solution enters the absorption tower 1 through the renewable energy outlet pipe 17 and passes through low-concentration CO2Flue gas outlet pipe 18 enters CO2The gas is compressed into liquid by a multistage compression cooling device 22 and enters a carbon sequestration and storage device 23; the dilute ammonia solution in the generator 3 enters the heat regenerator 13, exchanges heat with the concentrated ammonia solution from the absorber 11, and then enters the absorber 11 after passing through the second throttle valve 15.
It should be understood that the embodiments and examples discussed herein are illustrative only and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application and scope of the appended claims.
Claims (4)
1. A renewable energy source-driven multi-energy-region energy station for combined supply of cooling, heating, power and solid carbon comprises an ammonia process CO2Trapping system, kalina power generation system and injection type refrigerating system, ammonia process CO2Trapping system with kalina power generation system sharing generator (3), regenerator (13), third solution pump (14), second choke valve (15) and absorber (11), kalina power generation system with injection formula refrigerating system sharing sprayer (7) and condenser (8), its characterized in that, ammonia process CO2The trapping system and the kalina power generation system are coupled into oneRenewable heating system, which photoelectrically drives the ammonia process CO2Each solution pump in the trapping system and the kalina power generation system; the renewable heating system further comprises: one path of heat drives the generator (3), and the other path of heat is input to a heat supply end (21);
the renewable heating system is driven by renewable energy (25) through a photovoltaic power generation device (24); the renewable energy source (25) is solar energy;
the one-path heat driving generator (3) of the renewable heating system is used for inputting renewable energy (25) through a heat collector (26) and an energy distributor (16), and the other side of the generator (3) is provided with a device for conveying high-concentration CO2A renewable energy outlet pipe (17) for flue gas is connected to the ammonia process CO2A capture system;
said ammonia process CO2The capture system comprises an absorption tower (1), a first solution pump (2), a generator (3), a heat regenerator (13), a second throttle valve (15), an absorber (11) and a second solution pump (12) which are connected in sequence by pipelines, wherein a third solution pump (14) is connected between the heat regenerator (13) and the absorber (11);
the first solution pump (2), the second solution pump (12) and the third solution pump (14) are driven by renewable energy sources (25) through the photovoltaic power generation equipment (24) to provide electric energy;
the kalina power generation system comprises a generator (3), a two-phase expansion machine (4), a T-shaped pipe separator (6), an ejector (7), a condenser (8), an absorber (11), a third solution pump (14) and a heat regenerator (13) which are sequentially connected through pipelines, wherein the two-phase expansion machine (4) is connected with a power generator (5), and the T-shaped pipe separator (6) is provided with high-purity CO2A flue gas outlet (19);
the jet refrigeration system comprises an ejector (7), a condenser (8), a first throttle valve (10) and an evaporator (9) which are connected in sequence through pipelines.
2. The multi-energy flow area energy station of claim 1, wherein: the evaporator (9) is used for cooling.
3. The multi-energy flow area energy station of claim 1, wherein: and the other path of the renewable heating system is input to a heating end (21) through a heat collector (26), an energy distributor (16) and a heat exchanger (20).
4. The multi-energy flow area energy station of claim 1, wherein: the side line of the absorption tower (1) is provided with low-concentration CO2Flue gas outlet pipe (18), the low concentration CO2The flue gas outlet pipe (18) is conveyed to a carbon sequestration and storage device (23) through a multi-stage compression cooling device (22).
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| CN113701380B (en) * | 2021-07-05 | 2022-11-01 | 中国科学院理化技术研究所 | CO based on supersonic speed rotational flow two-phase expansion system2Multi-energy complementary distributed energy station |
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