CN210199571U - System for supplying thermoelectric hydrogen in multi-energy complementary intelligent manner - Google Patents
System for supplying thermoelectric hydrogen in multi-energy complementary intelligent manner Download PDFInfo
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- CN210199571U CN210199571U CN201921513443.5U CN201921513443U CN210199571U CN 210199571 U CN210199571 U CN 210199571U CN 201921513443 U CN201921513443 U CN 201921513443U CN 210199571 U CN210199571 U CN 210199571U
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Abstract
The utility model discloses a system for complementary wisdom supply thermoelectric hydrogen of multipotency, including natural gas power generation facility, power conversion device, solid oxide electrolytic cell heap and the heat exchange device who connects gradually, wherein: the natural gas power generation device is respectively connected with the natural gas pressure regulating and metering device, the air supply system and the heat exchange device; the power supply conversion device is respectively connected with the distributed photovoltaic power generation device, the distributed wind power generation device and the power grid sending-out device; the steam inlet of the solid oxide electrolytic cell stack is sequentially connected with the heat exchange device and the water treatment device, and the hydrogen outlet of the solid oxide electrolytic cell stack is sequentially connected with the hydrogen dehydration device and the hydrogen pressurization device. The utility model discloses aim at improving the comprehensive utilization efficiency of natural gas, wind-force, photovoltaic, for the terminal provides the richest product with can the enterprise, realize the comprehensive supply of the energy, application prospect is wide.
Description
Technical Field
The utility model belongs to the technical field of the new forms of energy technique and specifically relates to a rely on natural gas ripe warehousing and transportation power generation technique and wind-force, photovoltaic new forms of energy power generation technique to carry out multipotency complementation, supply coupling, realize the wrong peak intelligence supply system to main terminal energy networks of class such as electric power net, heating power net, hydrogen gas net.
Background
Natural Gas (Natural Gas) is a clean and environment-friendly high-quality energy, almost does not contain sulfur, dust and other harmful substances, generates less carbon dioxide during combustion than other fossil fuels, and causes lower greenhouse effect, thereby being capable of fundamentally improving the environmental quality and being recognized as the cleanest fossil energy on the earth.
Photovoltaic power generation is a technology of directly converting light energy into electric energy by using the photovoltaic effect of a semiconductor interface. The solar energy power generation system mainly comprises a solar panel (assembly), a controller and an inverter, and the main components are electronic components. The solar cells are connected in series and then are packaged and protected to form a large-area solar cell module, and then the photovoltaic power generation device is formed by matching with components such as a power controller and the like.
Wind power generation converts kinetic energy of wind into mechanical kinetic energy, and then converts the mechanical energy into electrical kinetic energy. The principle of wind power generation is that wind power drives windmill blades to rotate, and then the rotating speed is increased through a speed increaser, so that a generator is promoted to generate electricity. According to current windmill technology, a wind speed of about three meters per second (breeze level) can be used to start generating electricity.
Clean energy resources such as global wind energy, water energy, solar energy and the like are very rich, and the theoretical annual exploitable amount is 38 times of the worldwide exploitable reserve of fossil energy. But they have the fatal defects that the energy output can not be stably provided for a long time, and the energy supplementing and peak shaving system of the existing energy system or the separately configured energy storage and peak shaving system is required.
The process of hydrogen production by water electrolysis is actually an energy conversion process, namely a process of converting primary energy into energy carrier hydrogen energy. Therefore, the system for producing hydrogen by electrolyzing water mainly comprises a primary energy system and an electrolytic cell system. The SOEC hydrogen production system has the working principle that the primary energy system outputs electric energy and high-temperature heat energy to the SOEC electrolytic cell system, and water vapor is electrolyzed to generate hydrogen and oxygen under the combined action of the electric energy and the high-temperature heat energy. From the thermodynamic perspective, as the temperature rises, the theoretical decomposition voltage of water drops to some extent, the consumption of electric energy in the hydrogen production process is reduced, the consumption of heat energy is increased, and the energy conversion efficiency can exceed 90%. The specific reaction is as follows:
cathode reaction of H2O+2e－→H2+O2－
Anodic reaction of O2 －→2e－+1/2O2
General reaction H2O→H2+1/2O2
Industrial users are one of the main customer groups of natural gas merchants, and when the industrial users purchase natural gas, the industrial products are finally processed by generating heat energy, electric energy, cold energy, hydrogen and the like through a natural gas chemical reaction. The industries of industrial users generally focus on the industries of fine chemical engineering, pharmacy, papermaking, fertilizers, petrochemical industry, stainless steel and metal processing, lithium batteries and the like, and the ultimate demands of the users are mainly electric energy, steam, hot water, hot air, heat conduction oil, hydrogen, chilled water, cold and hot air conditioners and the like. In this way, the traditional natural gas trade efficiency is very low, each end user can only adopt natural gas from a trade company, and invest a great amount of manpower, material resources and financial resources to obtain the finally-wanted heat energy, cold energy, electric energy, hydrogen and the like from a self-built device. In this most primitive mode of trade, industrial users not only invest themselves in natural gas storage and transportation facilities, gas turbines, gas boilers, ice making plants, power generation plants, hydrogen production and purification plants, but also arrange specialized technicians to be responsible for the operation and maintenance of these facilities.
The utility model discloses mainly adopt the natural gas as main part energy electricity generation, heat supply, refrigeration, consider simultaneously that integration wind-force, photovoltaic distributing type power generation equipment constitute the complementary system of coupling multipotency, utilize natural gas power generation by-product used heat, wind-force, photovoltaic surplus electric power to pass through SOEC brineelectrolysis hydrogen manufacturing energy storage. The utility model provides a scheme that heat energy, cold energy, electric energy, hydrogen of one set of industry garden are synthesized and are supplied with. Not only can reduce the investment cost and the production cost of industrial users in the garden, but also can bring added value to energy suppliers and diversify products.
Disclosure of Invention
In order to overcome prior art's shortcoming, the utility model provides a complementary wisdom of multipotency supplies thermoelectric hydrogen's system aims at improving the comprehensive utilization efficiency of natural gas, wind-force, photovoltaic, for the terminal energy enterprise provides the most abundant product, realizes the comprehensive supply of the energy, and application prospect is wide.
The utility model adopts the technical proposal that: the utility model provides a system of complementary wisdom supply thermoelectric hydrogen of multipotency, includes the natural gas power generation facility, power conversion equipment, solid oxide electrolysis cell heap and the heat exchange device who connects gradually, wherein: the natural gas power generation device is respectively connected with the natural gas pressure regulating and metering device, the air supply system and the heat exchange device; the power supply conversion device is respectively connected with the distributed photovoltaic power generation device, the distributed wind power generation device and the power grid sending-out device; the steam inlet of the solid oxide electrolytic cell stack is sequentially connected with the heat exchange device and the water treatment device, and the hydrogen outlet of the solid oxide electrolytic cell stack is sequentially connected with the hydrogen dehydration device and the hydrogen pressurization device.
Compared with the prior art, the utility model has the positive effects that:
the utility model provides a rely on natural gas power generation by-product used heat to maintain reaction hydrogen manufacturing temperature, utilize SOEC brineelectrolysis hydrogen manufacturing to store the technological route of wind-force, photovoltaic, the surplus electric power of electric wire netting, realized that multipotency is complementary, high-efficient to be utilized. The utility model discloses can realize that the energy of steam, hot water, cold water, electric power, fuel cell level hydrogen is synthesized and is externally supplied, is one of the feasible construction mode of future comprehensive energy supply station, brings the appreciation for energy supplier, and the product is diversified. The utility model provides a rely on the warehousing and transportation power generation system and wind-force, the photovoltaic power generation technique of natural gas maturity to carry out the energy supply coupling, the construction with supply power grid, heating power net, the intelligent supply system for the purpose of main terminal energy networks of class such as hydrogen net. The utility model can also be used in large-scale hydrogen production and hydrogen liquefaction plants.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a system for providing a multi-energy complementary intelligent supply of thermoelectric hydrogen.
Detailed Description
A system for supplying thermoelectric hydrogen with multiple complementary intelligence, as shown in fig. 1, mainly comprising: the device comprises a natural gas pressure regulating and metering device 1, an air supply system 2, a natural gas power generation device 3, a power conversion device 4, a power grid power supply access device 5, a power grid sending-out device 6, a distributed photovoltaic power generation device 7, a distributed wind power generation device 8, a solid oxide electrolytic cell stack 9, a heat exchange device 10, a water treatment device 11, a lithium bromide refrigerator 12, a hydrogen dehydration device 13, a hydrogen pressurization device 14, a natural gas afterburning device 15, a tail gas discharge system 16 and a hydrogen-heat-electricity three-network intelligent sensing control module 17.
In particular, the amount of the solvent to be used,
1) the natural gas power generation system is composed of a natural gas pressure regulating and metering device 1, an air supply system 2, a natural gas power generation device 3, a heat exchange device 10, a natural gas afterburning device 15, a tail gas exhaust system 16 and the like to generate electric power and heat energy.
The pressure of the natural gas is regulated to be stable through the natural gas pressure regulating and metering device 1; the natural gas at the outlet of the natural gas pressure regulating and metering device 1 is divided into two streams, the first stream is connected with the inlet of the natural gas power generation device 3 through a pipeline to realize gas power generation, and the generated high-temperature tail gas is discharged to a tail gas discharge system 16 after heat is recovered through a heat exchange device 10; the second stream is sent to a natural gas afterburning device 15 for oxygen-enriched combustion, and the combusted high-temperature gas provides additional high-grade heat for the heat exchange device 10.
Air is sucked into the air supply system 2 from the atmosphere, the pressurized air is divided into two streams, the first stream of air is sent to an air inlet of the natural gas power generation device 3 through a pipeline to participate in gas power generation, and high-temperature tail gas generated is discharged to a tail gas discharge system 16 after heat is recovered through a heat exchange device 10; the second air is sent to the natural gas after-burning device 15 for burning, and the burnt high-temperature gas provides additional heat for the heat exchange device 10.
Wherein:
the natural gas power generation device 3 can be a system composed of key equipment such as a gas internal combustion engine, a gas turbine, a solid oxide battery and the like.
The heat exchange device 10 may be a system composed of shell-and-tube heat exchangers, plate heat exchangers, regenerative heat exchangers, and other key devices.
The air supply system 2 may be a system composed of a screw compressor, a reciprocating compressor, a centrifugal compressor, and other key devices.
2) The natural gas power generation device 3, the power conversion device 4, the power grid power supply access device 5, the power grid sending device 6, the distributed photovoltaic power generation device 7, the distributed wind power generation device 8 and the like form a power supply system to provide electric energy for a power grid and a solid oxide electrolytic cell.
The power generated by the natural gas power generation device 3 is communicated to the power conversion device 4 through a cable; the power generated by the distributed photovoltaic power generation device 7 is communicated to the power conversion device 4 through a cable; the power generated by the distributed wind power generation device 8 is communicated to the power conversion device 4 through a cable; the power grid power supply access device 5 can send surplus power to the power conversion device 4 through a cable when the power consumption is low; the power conversion device 4 generates power and sends out according to the power grid requirement; the power conversion device 4 converts the power that cannot be sent out into a current that satisfies the solid oxide electrolytic cell.
3) The solid oxide electrolytic cell stack 9, the heat exchange device 10, the water treatment device 11, the hydrogen dehydration device 13, the hydrogen pressurization device 14 and the like form a hydrogen production system.
After impurities are deeply removed from tap water through the water treatment device 11, the tap water is heated into steam through the heat exchange device 10 through a pipeline and then is sent to the inlet of the solid oxide electrolytic cell stack 9 to participate in hydrogen production reaction. The solid oxide electrolytic cell stack 9 respectively generates water-containing hydrogen and high-purity oxygen, wherein the water-containing hydrogen is sent to a heat exchange device 10 to recover heat energy, then is dehydrated by a hydrogen dehydration device 13, and finally is sent to a hydrogen pressurization device 14 to be compressed to proper pressure to be sent to an end user or a hydrogen pipe network. The high-purity oxygen generated by the solid oxide electrolytic cell stack 9 is sent to the natural gas afterburning device 15 to participate in the natural gas oxygen-enriched combustion reaction to supplement the consumed heat energy for hydrogen production.
Wherein:
the water treatment device 11 may be an on-site desalination device; or a purified water storage and supply device which is used for distributing after water treatment is carried out from the outside.
4) The heat exchange device 10, the water treatment device 11, the lithium bromide refrigerator 12 and the like form a refrigeration system.
After impurities in tap water are removed through the water treatment device 11, the tap water is heated through the heat exchange device 10 through a pipeline to form hot water, and when the hot water is lack of consumption in the summer market, the hot water can be sent to the lithium bromide refrigerator 12 to be converted into cold water which is output to a terminal user for consumption such as temperature regulation.
5) Hydrogen-heat-electricity three-network intelligent sensing control module 17
The hydrogen-heat-electricity three-network intelligent sensing control module 17 has the functions of sensing the requirements of a power grid, a heating power pipe network and a hydrogen energy pipe network and controlling the running state of equipment in the whole plant. The hydrogen-heat-electricity three-network intelligent sensing control module 17 can intelligently adjust the working load of the device according to the three-network real-time consumption demand data, and the following effects are achieved: 1, absorbing surplus electric energy of a power grid, photovoltaic and wind power, producing hydrogen and storing the hydrogen into a hydrogen energy pipe network; 2, sensing the peak value demand of the power grid, and outputting the main energy of the device as electric power to the power grid for peak regulation; 3, sensing the demand of the heat pipe network, adjusting related loads and converting the loads into heat energy to meet the demand of heat users.
Wherein:
the utility model discloses can be according to heating power pipe network, electric wire netting, three net user characteristics of hydrogen energy pipe network, appointed wherein natural gas or hydrogen can come to build the energy storage facility and bear the demand undulant to the demand real-time guarantee of heating power pipe network, electric wire netting, hydrogen energy pipe network user is realized in help.
Through the utility model discloses a system adopts methods that multipotency complementation such as natural gas, wind-force, photovoltaic realized thermoelectric hydrogen wisdom supply, including following content:
the air provided by the air supply system generates power through the natural gas power generation device and is transmitted to the power conversion device 4 through the natural gas of the pressure regulating and metering system, and the power is stably provided for the output of a power grid after being coupled with the power generated by the wind power generation device and the photovoltaic power generation device;
and secondly, high-temperature tail gas by-produced by the natural gas power generation device 3, high-temperature product gas by-produced by the solid oxide electrolytic cell stack 9 and high-temperature gas generated by oxygen-enriched combustion of the natural gas afterburning device 15 are led to the heat exchange device 10 to carry out step heat energy recovery, and purified water generated by the water treatment device is heated into high-grade steam and low-grade hot water by the recovered heat energy.
And thirdly, when the hot water demand is low in summer, the hot water is considered to be supplied to the lithium bromide refrigerator 12 and converted into cooling water, and the cooling water is supplied to the outside.
And fourthly, outputting electric power such as wind power, photovoltaic power, power grid valley electricity and the like to the solid oxide electrolytic cell stack 9 through the power conversion device 4 for decomposing high-temperature product water vapor into water-containing hydrogen and oxygen, wherein the water-containing hydrogen is dehydrated and pressurized to form fuel hydrogen for a hydrogen external transmission network and hydrogen customers.
Fifth, the utility model discloses utilize three net demands of three net intelligent perception control module perception electric wire netting, heating power net, hydrogen energy net of hydrogen thermoelectricity, the device load of intelligent regulation whole factory realizes:
1. the hydrogen energy pipe network is used for absorbing and storing power grid, photovoltaic and wind power energy, and producing hydrogen and storing the hydrogen energy;
2. sensing the peak value demand of the power grid, adjusting the main load to be converted into electric power, and outputting the electric power to the power grid for peak regulation;
3. sensing the demand of the heating power pipe network, adjusting the main load to be converted into heat energy to meet the demand of a heating power user.
The utility model discloses a theory of operation is:
the utility model provides a rely on the warehousing and transportation power generation system and wind-force, the photovoltaic power generation technique of natural gas maturity to carry out the energy supply coupling, the intelligent supply system of construction with supply power grid, heating power net, class main terminal energy networks such as hydrogen net as the purpose. The comprehensive utilization efficiency of natural gas, wind power and photovoltaic is improved, and the most abundant products are provided for terminal energy-using enterprises.
Scheme 1: the natural gas from the pipe network is regulated to medium pressure (about 0.4 MPa) by a pressure regulating metering system 1 and then is sent to a natural gas power generation device 3; the air supply system 2 compresses air to an intermediate pressure (about 0.4 MPa) and then sends the compressed air to the natural gas power generation device 3; in the fuel gas power generation device, chemical energy generated by the reaction of natural gas and air is utilized to generate power (different voltages are obtained according to different types of power generation equipment), and the generated high-temperature tail gas is recycled to generate steam or hot water.
And (2) a flow scheme: the surplus and off-peak power of wind power, photovoltaic power and a power grid is output (the output voltage is about 1V) to a solid oxide electrolytic cell stack 9 through a power conversion device 4, and the high-temperature product water vapor is decomposed into hydrogen containing water and oxygen; during electrolysis of water vapor, water vapor (mixed with small amount of H)2Ensuring the reducing atmosphere of the cathode to prevent oxidation of Ni) from entering the cathode of the cell where electrolysis occurs to produce H2And O2 －，O2 －By conduction through the electrolyte layer to the anode side, at which the electron generation O is lost2. The hydrous hydrogen can become hydrogen with excellent performance after dehydration and pressurization and can be conveyed to a hydrogen energy pipe network or an end user. In which generation ofThe oxygen is sent to the natural gas afterburning device 15 to realize oxygen-enriched combustion supporting, combustion efficiency is improved, and combustion temperature supplements heat for the heat exchange device 10.
And (3) a flow path: when the hot water demand is low in summer, the hot water output by the heat exchange device 10 is supplied to the lithium bromide refrigerator 12 to be converted into cooling water, so that the cooling water is supplied to the outside.
Claims (7)
1. A system for supplying thermoelectric hydrogen with multi-energy complementary intelligence is characterized in that: including natural gas power generation facility, power conversion equipment, solid oxide electrolytic cell heap and the heat exchange device who connects gradually, wherein: the natural gas power generation device is respectively connected with the natural gas pressure regulating and metering device, the air supply system and the heat exchange device; the power supply conversion device is respectively connected with the distributed photovoltaic power generation device, the distributed wind power generation device and the power grid sending-out device; the steam inlet of the solid oxide electrolytic cell stack is sequentially connected with the heat exchange device and the water treatment device, and the hydrogen outlet of the solid oxide electrolytic cell stack is sequentially connected with the hydrogen dehydration device and the hydrogen pressurization device.
2. The system of claim 1, wherein the system comprises: the natural gas pressure regulating and metering device and the air supply system are respectively connected with the natural gas afterburning device, and the natural gas afterburning device is connected with the high-temperature tail gas inlet of the heat exchange device.
3. The system of claim 2, wherein the system comprises: and an oxygen outlet of the solid oxide electrolytic cell stack is sequentially connected with the heat exchange device and the natural gas afterburning device.
4. The system of claim 1, wherein the system comprises: the water treatment device is connected with the heat exchange device and the hot water output pipeline in sequence.
5. The system of claim 4, wherein the system comprises: the water treatment device and the lithium bromide refrigerator form a cooling water circulation system, and the hot water output pipeline is connected with the lithium bromide refrigerator.
6. The system of claim 1, wherein the system comprises: and the power supply conversion device is connected with the power supply access device of the power grid.
7. The system of claim 1, wherein the system comprises: and a steam outlet of the heat exchange device is connected with a steam output pipeline.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110543157A (en) * | 2019-09-11 | 2019-12-06 | 中国石油工程建设有限公司 | system and method for multi-energy complementary intelligent supply of thermoelectric hydrogen |
| CN113931711A (en) * | 2021-09-06 | 2022-01-14 | 北京市燃气集团有限责任公司 | Independent power supply system for natural valve station |
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2019
- 2019-09-11 CN CN201921513443.5U patent/CN210199571U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110543157A (en) * | 2019-09-11 | 2019-12-06 | 中国石油工程建设有限公司 | system and method for multi-energy complementary intelligent supply of thermoelectric hydrogen |
| CN113931711A (en) * | 2021-09-06 | 2022-01-14 | 北京市燃气集团有限责任公司 | Independent power supply system for natural valve station |
| CN113931711B (en) * | 2021-09-06 | 2024-01-30 | 北京市燃气集团有限责任公司 | Independent power supply system for natural valve station |
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Effective date of registration: 20210302 Address after: No.2 Daqing East Road, Dushanzi District, Karamay City, Xinjiang Uygur Autonomous Region 834000 Patentee after: CNPC Engineering Co.,Ltd. Patentee after: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan Patentee before: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. |