CN217538845U - CO 2 Comprehensive energy system for generating electricity by combining co-electrolysis and oxygen-enriched combustion - Google Patents
CO 2 Comprehensive energy system for generating electricity by combining co-electrolysis and oxygen-enriched combustion Download PDFInfo
- Publication number
- CN217538845U CN217538845U CN202220987816.8U CN202220987816U CN217538845U CN 217538845 U CN217538845 U CN 217538845U CN 202220987816 U CN202220987816 U CN 202220987816U CN 217538845 U CN217538845 U CN 217538845U
- Authority
- CN
- China
- Prior art keywords
- oxygen
- power generation
- electrolysis
- water
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model provides a CO 2 The comprehensive energy system for CO-electrolysis combined oxygen-enriched combustion power generation comprises a wind power or photovoltaic power generation system, a water electrolysis cell, an air separation device, an ammonia synthesis module, an oxygen-enriched combustion power generation module and CO 2 And H 2 And O is shared with an electrolytic cell. The utility model discloses utilize wind energy or solar energy power generation drive air separation for nitrogen gas and oxygen, drive water electrolysis be hydrogen and oxygen, and oxygen is as the combustion improver of fossil fuel burning, fossil fuel power generation output electric energy, and the high temperature flue gas of production can directly let in water electrolytic bath and carry out electrolysis generation hydrocarbon altogether, and hydrocarbon is liquid under normal atmospheric temperature, the warehousing and transportation of being convenient for, but also important industrial chemicals. The power source is wind energy or solar energy power generation, CO 2 And the emission is reduced. Synthesizing ammonia by hydrogen and nitrogen. Realize the CO-production of electricity, hydrocarbon, ammonia and the like, and CO 2 High-valued resource utilization is realized, so that the carbon emission reduction cost is offset, and the low-carbon high-efficiency reformation of a fossil fuel power generation system is facilitated.
Description
Technical Field
The utility model belongs to the technical field of the energy is synthesized and is used, especially, relate to a CO 2 The comprehensive energy system combines electrolysis and oxygen-enriched combustion to generate electricity.
Background
In order to slow down the greenhouse effect, the energy system is undergoing green low-carbon transformation, and the reduction of the carbon dioxide emission of the energy system has become a consensus of human society. The carbon dioxide capture, utilization and sequestration technology (CCUS) plays an important role in green low-carbon reformation of an energy system, and particularly for energy intensive industries such as thermal power generation, cement, steel and the like, the CCUS technology can be well combined with the existing equipment, so that large-scale reconstruction of infrastructure is avoided.
However, the CCUS technology requires a new investment and is expensive to operate. For example, the current technology for reducing carbon emission in thermal power generation mainly absorbs and separates carbon dioxide in the combusted flue gas by a chemical absorption or physical adsorption method, but because the volume fraction of the carbon dioxide in the flue gas is low, such a capture system is huge, and the energy consumption for separation and analysis is high (the power supply efficiency is reduced by 10-15%). Therefore, the high carbon emission reduction cost brings great difficulty to low-carbon clean reform in the fields of thermal power generation and the like.
CCUS technology can be carried out by CO 2 The carbon is converted into high value-added raw materials, so that the wide market of the modern chemical high value-added raw materials is fully utilized to reduce the carbon emission reduction cost. For example, formic acid, methanol and the like are important chemical raw materials and have high market values, but the sources of the formic acid, the methanol and the like are fossil fuels at present, and the formic acid, the methanol and the like belong to high-carbon chemical processes.
On the whole, the current carbon dioxide trapping, utilization and sealing technologies have high cost and bring difficulties for carbon emission reduction of thermal power generation. Meanwhile, the dependence of the modern chemical raw material production process on fossil fuels is strong.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a CO 2 A comprehensive energy system combining co-electrolysis and oxygen-enriched combustion power generation and a co-production method aim at solving the problems that the trapping, utilization and sealing technology of carbon dioxide in the prior art is high in cost and brings difficulties to carbon emission reduction of thermal power generation.
The utility model is realized in such a way that the utility model is a CO 2 The comprehensive energy system for CO-electrolysis combined oxygen-enriched combustion power generation comprises a wind power or photovoltaic power generation system, a water electrolytic cell, an air separation device, an ammonia synthesis module, an oxygen-enriched combustion power generation module and CO 2 And H 2 O is shared with an electrolytic cell;
the electric energy output by the electric energy output port of the wind power or photovoltaic power generation system is divided into three branches which are respectively connected to the electric energy input port of the water electrolysis cell, the electric energy input port of the air separation device and the CO 2 And H 2 An electric energy input port of the O-common electrolytic cell;
the water inlet of the water electrolysis cell is connected with an external water source, the hydrogen outlet port of the water electrolysis cell is connected with the hydrogen inlet port of the ammonia synthesis module, and the oxygen outlet port of the water electrolysis cell is connected with the oxygen inlet port of the oxygen-enriched combustion power generation module;
the nitrogen output port of the air separation device is connected with the nitrogen input port of the ammonia synthesis module, and the oxygen output port of the air separation device is connected with the oxygen input port of the oxygen-enriched combustion power generation module;
the ammonia synthesis module is used for synthesizing ammonia from input nitrogen and hydrogen, and outputting the ammonia as one of system products;
the fuel input port of the oxygen-enriched combustion power generation module is used for inputting fossil fuel, the fossil fuel is subjected to oxygen-enriched combustion, chemical energy is converted into mechanical energy and then converted into electric energy, and the electric energy is used as a two-way output of a system product; high-temperature CO output by a tail gas output port of the oxygen-enriched combustion power generation module 2 And H 2 O gas is divided into two streams, one stream flows into a heat source input port of the water electrolysis cell, and the other stream flows into the CO together with tail gas from the water electrolysis cell after heat exchange after converging 2 And H 2 A raw material input port of the O-common electrolytic cell;
said CO 2 And H 2 The water inlet of the O CO-electrolysis cell is connected with an external water source, CO 2 And H 2 The O is co-electrolyzed to generate hydrocarbon, and the hydrocarbon is output as a third output of the system product.
Further, the air separation device adopts a low-temperature air separation technology.
Furthermore, the water electrolysis cell adopts alkaline electrolysis water, proton exchange membrane electrolysis water or high-temperature solid oxide electrolysis water technology.
Further, the device also comprises a regulating device which is used for regulating the introduction of the CO 2 And H 2 H in O-common electrolytic cell 2 The amount of O to regulate CO for CO-electrolysis 2 And H 2 And the proportion of O, and further controlling the generation of a target product.
Further, said CO 2 And H 2 The hydrocarbon produced by co-electrolysis of O is methanol or formic acid.
Compared with the prior art, the utility model, beneficial effect lies in:
the utility model discloses utilize wind energy or solar energy power generation drive air separation for nitrogen gas and oxygen, drive water electrolysis for hydrogen and oxygen, regard produced oxygen as combustion improver of fossil fuel burning, fossil fuel such as natural gas and coalWhen the smoke is used, chemical energy is converted into mechanical energy and then converted into electric energy to be output, and high-temperature smoke is generated and only contains water vapor and CO 2 The solid oxide can be directly introduced into a solid oxide electrolytic cell for co-electrolysis to generate hydrocarbons such as methanol, formic acid and the like.
The power source is wind energy or solar energy power generation, so that the emission of carbon dioxide is reduced. The hydrogen and the nitrogen can be used for synthesizing ammonia and output as a system product, thereby generating economic value. Hydrocarbon (such as methanol, formic acid and the like) is liquid at normal temperature, is convenient to store and transport, is an important intermediate raw material in a modern chemical system, not only converts a high-carbon process into a low-carbon process in the production process of the hydrocarbon, but also realizes high-value resource utilization of carbon dioxide, thereby offsetting high cost paid by carbon emission reduction and being beneficial to low-carbon high-efficiency reformation of a fossil fuel power generation system.
Drawings
FIG. 1 shows a CO provided by an embodiment of the present invention 2 The structural block diagram of the comprehensive energy system combining co-electrolysis and oxygen-enriched combustion power generation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to FIG. 1, there is shown a CO provided in this embodiment 2 The comprehensive energy system for CO-electrolysis combined oxygen-enriched combustion power generation comprises a wind power or photovoltaic power generation system 1, a water electrolysis cell 2, an air separation device 3, an ammonia synthesis module 4, an oxygen-enriched combustion power generation module 5 and CO 2 And H 2 O is common to the electrolytic cell 6.
The electric energy output by the electric energy output port of the wind power or photovoltaic power generation system 1 is divided into three branches which are respectively connected to the electric energy input port of the water electrolysis cell 2, the electric energy input port of the air separation device 3 and the CO 2 And H 2 And O is shared with the electric energy input port of the electrolytic cell 4, thereby providing electric energy for water electrolysis, air separation and co-electrolysis.
The water inlet of the water electrolysis pool 2 is connected with an external water source, the hydrogen outlet port of the water electrolysis pool is connected with the hydrogen inlet port of the ammonia synthesis module 4, and the oxygen outlet port of the water electrolysis pool is connected with the oxygen inlet port of the oxygen-enriched combustion power generation module 5.
The nitrogen output port of the air separation device 3 is connected with the nitrogen input port of the ammonia synthesis module 4, and the oxygen output port of the air separation device is connected with the oxygen input port of the oxygen-enriched combustion power generation module 5.
The ammonia synthesis module 4 is used for synthesizing ammonia by inputting nitrogen and hydrogen, and outputting the ammonia as one of system products.
The fuel input port of the oxygen-enriched combustion power generation module 5 is used for inputting fossil fuel, the fossil fuel is subjected to oxygen-enriched combustion, chemical energy is converted into mechanical energy and then converted into electric energy, and the electric energy is output outwards as a two-way output of a system product; high-temperature CO output by a tail gas output port of the oxygen-enriched combustion power generation module 5 2 And H 2 The O gas is divided into two streams, one stream flows into the heat source input port of the water electrolytic cell 2, and the other stream flows into the water electrolytic cell from the water electrolysisAfter the heat-exchanged tail gas in the pool 2 is converged, the heat-exchanged tail gas flows into CO together 2 And H 2 And O is used as a raw material input port of the electrolytic cell 6.
CO 2 And H 2 The water inlet of the O-common electrolytic cell 6 is connected with an external water source, CO 2 And H 2 Co-electrolysis of O occurs to produce hydrocarbons (such as methanol or formic acid) which are exported as a third product of the system.
The operation flow for realizing co-production by applying the comprehensive energy system of the embodiment is as follows:
s1, electric energy generated by a wind power or photovoltaic power generation system 1 respectively enters a water electrolytic cell 2 and an air separation device 3, water is subjected to electrochemical reaction in the water electrolytic cell 2 to generate hydrogen and oxygen, and air is subjected to nitrogen and oxygen generation in the air separation device 3; the generated oxygen is converged and enters the oxygen-enriched combustion power generation module 5 to be used as a combustion improver.
And S2, hydrogen and nitrogen flow into the ammonia synthesis module 4 to synthesize ammonia, and the ammonia is taken as one of the multiple products of the system and is output outwards.
S3, oxygen and fossil fuels such as natural gas or coal in the oxygen-enriched combustion power generation module 5 are subjected to oxygen-enriched combustion, chemical energy is converted into mechanical energy and then converted into electric energy, and the electric energy is used as a two-way output of a system multi-connected product; simultaneously generating high-temperature flue gas; the main components of the high-temperature flue gas are carbon dioxide and water vapor.
S4, dividing the high-temperature flue gas into two streams, converging the two streams into converged flue gas after one stream provides heat for the water electrolysis cell, and introducing CO into the converged flue gas 2 And H 2 Carrying out co-electrolysis in the O co-electrolysis cell 6, wherein the electric energy is generated by a wind power or photovoltaic power generation system 1; in the CO 2 And H 2 In the O-Co electrolytic cell 6, carbon dioxide and steam are converted into hydrocarbon, and the hydrocarbon is output outwards as a multi-connected product of the system.
Wherein, the chemical reaction in the ammonia synthesis module 4 is as follows:
CO as described above 2 And H 2 In the O co-cell 6, when tin oxide is used as a catalyst, the chemical reaction is:
CO 2 +H 2 O+2e - →HCOO - +OH -
when cobalt phthalocyanine is used as the catalyst, the chemical reaction is as follows:
CO 2 +5H 2 O+6e - →CH 3 OH+6OH - 。
in practical application, the air separation device 3 can adopt a low-temperature air separation technology, and the water electrolysis cell 2 can adopt an alkaline electrolysis water, proton exchange membrane electrolysis water or high-temperature solid oxide electrolysis water technology.
In addition, the introduction of CO can be regulated 2 And H 2 O-Co-electrolysis of H in cell 5 2 The amount of O to regulate CO for CO-electrolysis 2 And H 2 And the proportion of O, and further controlling the generation of a target product.
In summary, in this embodiment, wind energy or solar energy is used to generate electricity to drive air to be separated into nitrogen and oxygen, drive water to be electrolyzed into hydrogen and oxygen, the generated oxygen is used as a combustion improver for fossil fuel combustion, when fossil fuel fuels such as natural gas and coal are used, chemical energy is converted into mechanical energy and then converted into electric energy to be output, and simultaneously high-temperature flue gas is generated, and only water vapor and CO are contained in the high-temperature flue gas 2 The solid oxide can be directly introduced into a solid oxide electrolytic cell for co-electrolysis to generate hydrocarbons such as methanol, formic acid and the like.
Because the power source is wind energy or solar energy power generation, the emission of carbon dioxide is reduced. The hydrogen and the nitrogen can be used for synthesizing ammonia and output as a system product, thereby generating economic value. Hydrocarbon compounds such as methanol, formic acid and the like are liquid at normal temperature, are convenient to store and transport, are important intermediate raw materials in a modern chemical system, convert a high-carbon process into a low-carbon process in the production process of the hydrocarbon compounds, and realize high-valued resource utilization of carbon dioxide, so that the high cost paid by carbon emission reduction is offset, and the low-carbon high-efficiency reformation of a fossil fuel power generation system is facilitated.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. CO (carbon monoxide) 2 The comprehensive energy system for CO-electrolysis combined oxygen-enriched combustion power generation is characterized by comprising a wind power or photovoltaic power generation system, a water electrolysis cell, an air separation device, an ammonia synthesis module, an oxygen-enriched combustion power generation module and CO 2 And H 2 O is shared with an electrolytic cell;
the electric energy output by the electric energy output port of the wind power or photovoltaic power generation system is divided into three branches which are respectively connected to the electric energy input port of the water electrolysis cell, the electric energy input port of the air separation device and the CO 2 And H 2 An electric energy input port of the O-common electrolytic cell;
the water inlet of the water electrolysis cell is connected with an external water source, the hydrogen outlet port of the water electrolysis cell is connected with the hydrogen inlet port of the ammonia synthesis module, and the oxygen outlet port of the water electrolysis cell is connected with the oxygen inlet port of the oxygen-enriched combustion power generation module;
the nitrogen output port of the air separation device is connected with the nitrogen input port of the ammonia synthesis module, and the oxygen output port of the air separation device is connected with the oxygen input port of the oxygen-enriched combustion power generation module;
the ammonia synthesis module is used for synthesizing ammonia from input nitrogen and hydrogen, and outputting the ammonia as one of system products;
the fuel input port of the oxygen-enriched combustion power generation module is used for inputting fossil fuel, the fossil fuel is subjected to oxygen-enriched combustion, chemical energy is converted into mechanical energy and then converted into electric energy, and the electric energy is used as a two-way output of a system product; high-temperature CO output by a tail gas output port of the oxygen-enriched combustion power generation module 2 And H 2 O gas is divided into two streams, one stream flows into a heat source input port of the water electrolysis cell, and the other stream flows into the CO together with tail gas from the water electrolysis cell after heat exchange after converging 2 And H 2 A raw material input port of the O-common electrolytic cell;
the CO is 2 And H 2 The water inlet of the O CO-electrolysis cell is connected with an external water source, CO 2 And H 2 The O is co-electrolyzed to generate hydrocarbon, and the hydrocarbon is output as a third output of the system product.
2. The integrated energy system of claim 1, wherein the air separation unit employs cryogenic air separation technology.
3. The integrated energy system of claim 1, wherein the water electrolysis cell employs alkaline electrolysis water, proton exchange membrane electrolysis water, or high temperature solid oxide electrolysis water technology.
4. The integrated energy system of claim 1, further comprising a regulating device for regulating the introduction of said CO 2 And H 2 H in O-common electrolytic cell 2 The amount of O to regulate CO for CO-electrolysis 2 And H 2 And the proportion of O, and further controlling the generation of a target product.
5. The integrated energy system of claim 1, wherein the CO is present in the energy storage system 2 And H 2 The hydrocarbon produced by co-electrolysis of O is methanol or formic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220987816.8U CN217538845U (en) | 2022-04-26 | 2022-04-26 | CO 2 Comprehensive energy system for generating electricity by combining co-electrolysis and oxygen-enriched combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220987816.8U CN217538845U (en) | 2022-04-26 | 2022-04-26 | CO 2 Comprehensive energy system for generating electricity by combining co-electrolysis and oxygen-enriched combustion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217538845U true CN217538845U (en) | 2022-10-04 |
Family
ID=83431091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220987816.8U Active CN217538845U (en) | 2022-04-26 | 2022-04-26 | CO 2 Comprehensive energy system for generating electricity by combining co-electrolysis and oxygen-enriched combustion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217538845U (en) |
-
2022
- 2022-04-26 CN CN202220987816.8U patent/CN217538845U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Su et al. | Novel ways for hydrogen production based on methane steam and dry reforming integrated with carbon capture | |
| KR101142472B1 (en) | Molten Carbonate Fuel Cell System with Hydrocarbon Reactor | |
| WO2022193349A1 (en) | Combined hydrogen production system based on renewable energy water electrolysis and carbon capture technology | |
| CN113350989A (en) | Carbon dioxide capture method and system for coal-fired power generation coupled with renewable energy power generation | |
| CN114214637B (en) | Device and method for comprehensively utilizing hydrogen and oxygen by water electrolysis | |
| CN115763883B (en) | Zero-carbon-emission solid oxide fuel cell power generation system integrated with oxygen permeable membrane | |
| CN112725034A (en) | Renewable energy power-to-gas system coupled with biomass gasification | |
| CN114526158B (en) | Energy and substance conversion system and method based on carbon dioxide hydrogenation | |
| CN114776441A (en) | CO2Comprehensive energy system for co-electrolysis combined oxygen-enriched combustion power generation and co-production method | |
| Suárez-González et al. | Review on hydrogen production technologies from solar energy | |
| CN217538845U (en) | CO 2 Comprehensive energy system for generating electricity by combining co-electrolysis and oxygen-enriched combustion | |
| CN112552143A (en) | System and method for preparing ethylene glycol from coal by coupling solid oxide electrolytic cell | |
| CN114893264B (en) | Combining green hydrogen with CO 2 Coal-fired oxygen-enriched combustion power generation system and method for resource utilization | |
| CN115354345A (en) | Photovoltaic photo-thermal coupling co-electrolysis combined garbage power generation comprehensive energy system and process method thereof | |
| CN201402833Y (en) | Battery integration generating device based on natural-gas-prepared hydrogen and proton exchange membrane fuel | |
| CN114522518A (en) | Carbon-containing recycling gas power plant low-cost carbon emission reduction system and method | |
| CN114658537B (en) | Based on CO 2 Co-electrolysis and biocatalysis power generation and substance combination supply system and method | |
| CN117819479B (en) | System for preparing synthesis gas by natural gas hydrogen production coupled with carbon dioxide trapping | |
| CN220149230U (en) | Green electricity system green ammonia coproduction nitric acid closed circulation system | |
| CN217334159U (en) | Zero-carbon-emission high-temperature reversible fuel cell energy supply/storage system for LNG receiving station | |
| CN220099207U (en) | Decoupling hydrogen production device | |
| CN219441225U (en) | System for utilize green hydrogen system ammonia to realize flue gas denitration | |
| CN220926680U (en) | System for preparing liquid fuel by complementation of biogas and green hydrogen | |
| CN218976355U (en) | New energy coupling comprehensive energy system for preparing hydrogen by thermal power | |
| Liu et al. | Design and Analysis of a Nuclear Hydrogen Production System by Methanol Reforming Using Light Water Reactor (LWR) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |