CN210460776U - Liquid hydrogen gasification cold energy recovery power generation device - Google Patents

Liquid hydrogen gasification cold energy recovery power generation device Download PDF

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CN210460776U
CN210460776U CN201921562656.7U CN201921562656U CN210460776U CN 210460776 U CN210460776 U CN 210460776U CN 201921562656 U CN201921562656 U CN 201921562656U CN 210460776 U CN210460776 U CN 210460776U
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carbon dioxide
inlet
communicated
liquid
power generation
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郑开云
黄志强
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Shanghai Power Equipment Research Institute Co Ltd
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Shanghai Power Equipment Research Institute Co Ltd
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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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

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Abstract

The utility model discloses a liquid hydrogen gasification cold energy recovery power generation device, which comprises a hydrogenation device used for hydrogenation of a fuel cell vehicle; the carbon dioxide power generation device is used for converting heat energy into electric energy through the thermal circulation of a carbon dioxide working medium; and the heat transfer medium circulating device is used for transferring cold energy released by the hydrogenation device in the hydrogenation process to a carbon dioxide working medium of the carbon dioxide power generation device as a cooling source, is arranged between the hydrogenation device and the carbon dioxide power generation device and is mainly used for transferring the cold energy. The utility model discloses liquid hydrogen gasification cold volume is by carbon dioxide working medium thermal cycle utilization in order to reduce the cold junction temperature, makes the thermal cycle convert the heat energy in the electric heat accumulator into the electric energy with the efficiency more than 90%, avoids the cold volume of liquid hydrogen release in the vaporizer to be wasted, has saved the energy.

Description

Liquid hydrogen gasification cold energy recovery power generation device
Technical Field
The utility model relates to a cold volume recovery power generation technical field, in particular to liquid hydrogen gasification cold volume recovery power generation facility.
Background
With the development of the hydrogen energy industry, the construction progress of the hydrogen power station is also continuously accelerated. The number of the existing hydrogenation stations in China is about more than 20, and is estimated to reach 100 in 2020 and 1000 in 2030.
The hydrogen stations can be divided into gas hydrogen stations and liquid hydrogen stations, wherein the liquid hydrogen stations are very common abroad, such as: half of the hydrogenation stations in japan are liquid hydrogen hydrogenation stations. The liquid hydrogen filling process comprises the following steps: firstly, the liquid hydrogen is pressurized by a liquid hydrogen pump, and then the liquid hydrogen is naturally gasified by absorbing the heat in the ambient air in a high-pressure gasifier. The energy consumption of the liquid hydrogen pump for pressurizing liquid is much less than that of the compressor for pressurizing gas, so that the electric energy is saved. When the daily hydrogenation amount exceeds 1000kg, the equipment investment of the liquid hydrogen station is lower by about 20% than that of the gas hydrogen station, so the liquid hydrogen station is widely popularized.
At present, when a liquid hydrogen refueling station hydrogenates a fuel cell vehicle, most of cold energy released by liquid hydrogen in a gasifier is directly discharged to the environment, so that the temperature of the environment is influenced, a large amount of cold energy is wasted, namely, energy is wasted, and therefore, the recovery of the cold energy has important significance for further improving the energy efficiency of the liquid hydrogen refueling station.
SUMMERY OF THE UTILITY MODEL
For solving the problem that prior art exists, the utility model aims at providing a reasonable in design, simple structure, liquid hydrogen gasification cold volume are by carbon dioxide working medium thermodynamic cycle utilization in order to reduce the cold junction temperature, make the thermodynamic cycle heat energy in with the electric heat accumulator convert the electric energy into with the efficiency more than 90%, avoid the cold volume of liquid hydrogen release in the vaporizer to be wasted, the liquid hydrogen gasification cold volume recovery power generation facility of having saved the resource.
For solving the above technical problem, the utility model discloses a following technical scheme realizes:
a liquid hydrogen gasification cold energy recovery power generation device is characterized by comprising
A hydrogenation device for hydrogenating the fuel cell vehicle;
the carbon dioxide power generation device is used for converting heat energy into electric energy through the thermal circulation of a carbon dioxide working medium;
and the heat transfer medium circulating device is used for transferring cold energy released by the hydrogenation device in the hydrogenation process to a carbon dioxide working medium of the carbon dioxide power generation device as a cooling source, is arranged between the hydrogenation device and the carbon dioxide power generation device and is mainly used for transferring the cold energy.
In a preferred embodiment of the present invention, the hydrogenation apparatus comprises
A liquid hydrogen tank for containing liquid hydrogen;
the liquid hydrogen pump is used for pressurizing hydrogen liquid flowing out of the liquid hydrogen tank to a pressure required by hydrogen filling, and a liquid inlet of the liquid hydrogen pump is communicated with a liquid outlet of the liquid hydrogen tank;
the gasifier is used for gasifying the hydrogen liquid pressurized by the liquid hydrogen pump, a hydrogen side inlet of the gasifier is communicated with a liquid outlet of the liquid hydrogen pump, and the cold energy released by the gasifier is transmitted to a carbon dioxide working medium of the carbon dioxide power generation device through the heat transfer medium circulating device to serve as a cooling source;
the pressure accumulator is used for storing the hydrogen gasified by the gasifier, and the gas inlet of the pressure accumulator is communicated with the hydrogen-side outlet of the gasifier;
and the hydrogen filling machine is used for hydrogenating the fuel cell vehicle, and the air inlet of the hydrogen filling machine is communicated with the air outlet of the pressure accumulator.
In a preferred embodiment of the present invention, the carbon dioxide power generation device comprises
A cooler which takes the cold energy released by the hydrogenation device in the hydrogenation process as a carbon dioxide working medium liquefaction cold source through a heat transfer medium circulating device;
the system comprises a cooler, a liquid inlet of the cooler, a liquid outlet of the cooler, a liquid inlet of the liquid outlet of the cooler, a liquid outlet of the cooler, and;
the low-temperature regenerator is used for heating the carbon dioxide working medium pressurized by the two-oxide pump, the high-pressure side inlet of the low-temperature regenerator is communicated with the liquid outlet of the carbon dioxide pump, and the low-pressure side outlet of the low-temperature regenerator is communicated with the inlet of the cooler;
the preheater is used for preheating the carbon dioxide working medium heated by the low-temperature heat regenerator, and an inlet of the preheater is communicated with a high-pressure side outlet of the low-temperature heat regenerator;
the high-temperature regenerator is used for heating the carbon dioxide working medium preheated by the preheater, an inlet on the high-pressure side of the high-temperature regenerator is communicated with an outlet of the preheater, and an outlet on the low-pressure side of the high-temperature regenerator is communicated with an inlet on the low-pressure side of the low-temperature regenerator;
the electric heat accumulator is used for reheating the carbon dioxide heated by the high-temperature heat regenerator, and the inlet of the electric heat accumulator is communicated with the high-pressure side outlet of the high-temperature heat regenerator;
and the inlet of the turbine is communicated with the outlet of the electric heat accumulator, and the exhaust port of the turbine is communicated with the inlet of the low-pressure side of the high-temperature heat regenerator.
In a preferred embodiment of the present invention, the heat transfer medium circulation device includes a heat transfer medium circulation pump and a heat transfer medium circulation pipe, an inlet of the heat transfer medium circulation pipe is communicated with a cold quantity outlet of the hydrogenation device, an outlet of the heat transfer medium circulation pipe is communicated with a liquefaction inlet of the carbon dioxide power generation device, an inlet of the heat transfer medium circulation pump is communicated with a heat transfer medium side outlet of the carbon dioxide power generation device, and an outlet of the heat transfer medium circulation pump is communicated with a heat transfer medium side inlet of the hydrogenation device.
Compared with the prior art, the utility model discloses a liquid hydrogen gasification cold volume is by carbon dioxide working medium thermodynamic cycle utilization in order to reduce the cold junction temperature, makes the thermodynamic cycle convert the heat energy in the electric heat accumulator into the electric energy with the efficiency more than 90%. The heat energy of the electric heat accumulator is accumulated in an electric heating mode when the electric charge is low at night, and the heat energy is converted into the electric energy through the thermal circulation of the carbon dioxide working medium when the electric charge is high at daytime, so that considerable benefit is obtained from the price difference of the electric charge. The device is free of any emissions and does not require the addition of fuel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a control schematic diagram of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, a liquid hydrogen gasification cold energy recovery power generation device is provided, which comprises a hydrogenation device, a carbon dioxide power generation device and a heat transfer medium circulation device.
The hydrogenation device is used for hydrogenating the fuel cell vehicle, the carbon dioxide power generation device is used for converting heat energy into electric energy through the thermal circulation of a carbon dioxide working medium, the heat transfer medium circulation device is used for transferring cold energy released by the hydrogenation device in the hydrogenation process to the carbon dioxide working medium of the carbon dioxide power generation device as a cooling source, and the heat transfer medium circulation device is arranged between the hydrogenation device and the carbon dioxide power generation device and is mainly used for transferring the cold energy.
The hydrogenation device comprises a liquid hydrogen tank 1000, a liquid hydrogen pump 1100, a gasifier 1200, an accumulator 1300 and a hydrogen filling machine 1400, wherein the liquid hydrogen tank 1000 is used for containing liquid hydrogen, the liquid hydrogen pump 1100 is used for pressurizing hydrogen liquid flowing out of the liquid hydrogen tank 1000 to pressure required by hydrogen filling, and a liquid inlet of the liquid hydrogen pump 1100 is communicated with a liquid outlet of the liquid hydrogen tank 1000.
The vaporizer 1200 is configured to vaporize hydrogen liquid pressurized by the liquid hydrogen pump 1100, a hydrogen side inlet of the vaporizer 1200 is communicated with a liquid outlet of the liquid hydrogen pump 1100, and the cold energy released by the vaporizer 1200 is transferred to a carbon dioxide working medium of the carbon dioxide power generation device through the heat transfer medium circulation device as a cooling source.
The accumulator 1300 is used for storing the hydrogen gasified by the gasifier 1200, the gas inlet of the accumulator 1300 is communicated with the hydrogen side outlet of the gasifier 1200, the hydrogen filling machine 1400 is used for hydrogenating the fuel cell vehicle, and the gas inlet of the hydrogen filling machine 1400 is communicated with the gas outlet of the accumulator 1300.
The carbon dioxide power generation device includes a cooler 800, a dioxide pump 100, a low-temperature regenerator 200, a preheater 300, a high-temperature regenerator 400, an electric heat accumulator 500, a turbine 600, and a generator 700.
The cooler 800 takes the cold energy released by the hydrogenation device in the hydrogenation process as a carbon dioxide working medium liquefaction cold source through the heat transfer medium circulating device, the oxidation pump 100 is used for pressurizing the carbon dioxide working medium liquefied through the cooler 800 to a set pressure value, and a liquid inlet of the oxidation pump 100 is communicated with a liquid outlet of the cooler 800.
The low-temperature heat regenerator 200 is used for heating the carbon dioxide working medium pressurized by the carbon dioxide pump 100, an inlet on a high-pressure side of the low-temperature heat regenerator 200 is communicated with a liquid outlet of the carbon dioxide pump 100, and an outlet on a low-pressure side of the low-temperature heat regenerator 200 is communicated with an inlet of the cooler 800.
The preheater 300 is used for preheating the carbon dioxide working medium heated by the low-temperature regenerator 200, the inlet of the preheater 300 is communicated with the outlet of the high-pressure side of the low-temperature regenerator 200, the high-temperature regenerator 400 is used for heating the carbon dioxide working medium preheated by the preheater 300, the inlet of the high-pressure side of the high-temperature regenerator 400 is communicated with the outlet of the preheater 300, and the outlet of the low-pressure side of the high-temperature regenerator 400 is communicated with the inlet of the low-pressure side of the low-temperature regenerator 200.
The electric heat accumulator 500 is used for reheating carbon dioxide heated by the high-temperature heat regenerator 400, an inlet of the electric heat accumulator 500 is communicated with an outlet at the high-pressure side of the high-temperature heat regenerator 400, the turbine 600 is used for pushing the generator 700 to generate electric power, an inlet of the turbine 600 is communicated with an outlet of the electric heat accumulator 500, and an exhaust port of the turbine 600 is communicated with an inlet at the low-pressure side of the high-temperature heat regenerator 400.
The heat transfer medium circulating device comprises a heat transfer medium circulating pump 900 and a heat transfer medium circulating pipeline, wherein a heat transfer medium side outlet of the gasifier 1200 is communicated with a heat transfer medium side inlet of the cooler 800 through the heat transfer medium circulating pipeline, an inlet of the heat transfer medium circulating pump 900 is communicated with a heat transfer medium side outlet of the cooler 800, and an outlet of the heat transfer medium circulating pump 900 is communicated with a heat transfer medium side inlet of the gasifier 1200.
The utility model discloses specific theory of operation as follows:
the liquid hydrogen pump 1100 pressurizes the liquid hydrogen in the liquid hydrogen tank 100 to a high pressure required for hydrogen gas filling, such as: and (4) gasifying the fuel gas under 70MPa through a gasifier 1200, then storing the fuel gas in a pressure accumulator 1300, and finally adding hydrogen to the fuel cell vehicle through a hydrogen filling machine 1400.
The heat transfer medium circulating pump 900 circulates the heat transfer medium between the cooler 800 and the vaporizer 1200, and transfers the cold energy released from the liquid hydrogen in the vaporizer 1200 to the cooler 800 to liquefy the carbon dioxide working medium.
The carbon dioxide pump 100 boosts a liquid carbon dioxide working medium to about 5MPa, the boosted carbon dioxide working medium is heated by the low-temperature heat regenerator 200, is heated by ambient air through the preheater 300, is heated by the high-temperature heat regenerator 400, is heated to 700 ℃ through the electric heat accumulator 500, enters the turbine 600 to expand to 0.8MPa, the turbine 600 pushes the generator 700 to generate electric power, the exhaust gas of the turbine 600 sequentially passes through the high-temperature heat regenerator 400 and the low-temperature heat regenerator 200 to release waste heat, is cooled to-50 ℃ through the cooler 800, and then returns to the carbon dioxide pump 100.
The electric heat accumulator 500 is used in a period when the electricity rate is low, such as: at night, the electric energy is converted into heat energy for storage. The heat transfer medium sides of the cooler 800 and the gasifier 1200 have certain volumes, and can store a part of cold energy released by gasifying the liquid hydrogen, so that the cold energy recovery power generation process is more stable.
To sum up the utility model discloses a liquid hydrogen gasification cold volume is in order to reduce the cold junction temperature by carbon dioxide working medium thermal cycle utilization, makes the thermal cycle convert the heat energy in the electric heat accumulator into the electric energy with the efficiency more than 90%. The heat energy of the electric heat accumulator is accumulated in an electric heating mode when the electric charge is low at night, and the heat energy is converted into the electric energy through the thermal circulation of the carbon dioxide working medium when the electric charge is high at daytime, so that considerable benefit is obtained from the price difference of the electric charge. The device is free of any emissions and does not require the addition of fuel.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. A liquid hydrogen gasification cold energy recovery power generation device is characterized by comprising
A hydrogenation device for hydrogenating the fuel cell vehicle;
the carbon dioxide power generation device is used for converting heat energy into electric energy through the thermal circulation of a carbon dioxide working medium;
and the heat transfer medium circulating device is used for transferring cold energy released by the hydrogenation device in the hydrogenation process to a carbon dioxide working medium of the carbon dioxide power generation device as a cooling source, is arranged between the hydrogenation device and the carbon dioxide power generation device and is mainly used for transferring the cold energy.
2. The liquid hydrogen gasification cold energy recovery power generation device according to claim 1, characterized in that: the hydrogenation device comprises
A liquid hydrogen tank for containing liquid hydrogen;
the liquid hydrogen pump is used for pressurizing hydrogen liquid flowing out of the liquid hydrogen tank to a pressure required by hydrogen filling, and a liquid inlet of the liquid hydrogen pump is communicated with a liquid outlet of the liquid hydrogen tank;
the gasifier is used for gasifying the hydrogen liquid pressurized by the liquid hydrogen pump, a hydrogen side inlet of the gasifier is communicated with a liquid outlet of the liquid hydrogen pump, and the cold energy released by the gasifier is transmitted to a carbon dioxide working medium of the carbon dioxide power generation device through the heat transfer medium circulating device to serve as a cooling source;
the pressure accumulator is used for storing the hydrogen gasified by the gasifier, and the gas inlet of the pressure accumulator is communicated with the hydrogen-side outlet of the gasifier;
and the hydrogen filling machine is used for hydrogenating the fuel cell vehicle, and the air inlet of the hydrogen filling machine is communicated with the air outlet of the pressure accumulator.
3. The liquid hydrogen gasification cold energy recovery power generation device according to claim 1, characterized in that: the carbon dioxide power generation device comprises
A cooler which takes the cold energy released by the hydrogenation device in the hydrogenation process as a carbon dioxide working medium liquefaction cold source through a heat transfer medium circulating device;
the system comprises a cooler, a liquid inlet of the cooler, a liquid outlet of the cooler, a liquid inlet of the liquid outlet of the cooler, a liquid outlet of the cooler, and;
the low-temperature regenerator is used for heating the carbon dioxide working medium pressurized by the two-oxide pump, the high-pressure side inlet of the low-temperature regenerator is communicated with the liquid outlet of the carbon dioxide pump, and the low-pressure side outlet of the low-temperature regenerator is communicated with the inlet of the cooler;
the preheater is used for preheating the carbon dioxide working medium heated by the low-temperature heat regenerator, and an inlet of the preheater is communicated with a high-pressure side outlet of the low-temperature heat regenerator;
the high-temperature regenerator is used for heating the carbon dioxide working medium preheated by the preheater, an inlet on the high-pressure side of the high-temperature regenerator is communicated with an outlet of the preheater, and an outlet on the low-pressure side of the high-temperature regenerator is communicated with an inlet on the low-pressure side of the low-temperature regenerator;
the electric heat accumulator is used for reheating the carbon dioxide heated by the high-temperature heat regenerator, and the inlet of the electric heat accumulator is communicated with the high-pressure side outlet of the high-temperature heat regenerator;
and the inlet of the turbine is communicated with the outlet of the electric heat accumulator, and the exhaust port of the turbine is communicated with the inlet of the low-pressure side of the high-temperature heat regenerator.
4. The liquid hydrogen gasification cold energy recovery power generation device according to claim 1, characterized in that: the heat transfer medium circulating device comprises a heat transfer medium circulating pump and a heat transfer medium circulating pipeline, wherein an inlet of the heat transfer medium circulating pipeline is communicated with a cold quantity outlet of the hydrogenation device, an outlet of the heat transfer medium circulating pipeline is communicated with a liquefaction inlet of the carbon dioxide power generation device, an inlet of the heat transfer medium circulating pump is communicated with a heat transfer medium side outlet of the carbon dioxide power generation device, and an outlet of the heat transfer medium circulating pump is communicated with a heat transfer medium side inlet of the hydrogenation device.
CN201921562656.7U 2019-09-19 2019-09-19 Liquid hydrogen gasification cold energy recovery power generation device Active CN210460776U (en)

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CN201921562656.7U CN210460776U (en) 2019-09-19 2019-09-19 Liquid hydrogen gasification cold energy recovery power generation device

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Application Number Priority Date Filing Date Title
CN201921562656.7U CN210460776U (en) 2019-09-19 2019-09-19 Liquid hydrogen gasification cold energy recovery power generation device

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