Cold energy recovery device for heat pipe type high-pressure low-temperature liquid gasification heating process
A high-pressure, low-temperature, cold energy recovery technology, applied in the direction of heat exchanger types, heat exchangers, indirect heat exchangers, etc., can solve problems such as unapplicable, plate heat exchangers can not bear the pressure difference, etc., to achieve low cost and effective The effect of recycling and convenient transportation
Pending Publication Date: 2021-09-28
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology
If a plate heat exchanger is used, it cannot be applied because the plate heat exchanger cannot bear the large pressure difference on both sides.
Method used
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[0022] Such as figure 1 As shown, a heat pipe type high-pressure low-temperature liquid gasification cooling energy recovery device mainly includes an upper high-pressure side cooling system and a lower low-pressure side cooling system. The device can be used for high-pressure low-temperature liquid gas It can also be used for recovery and utilization of gas waste heat under medium pressure, low pressure or negative pressure conditions. Among them, the cold energy of the high-pressure low-temperature liquid gasification process includes the cold energy of the liquid air gasification process during the energy release process of the liquid air energy storage system and the gasification process of low-temperature working fluids such as LNG or liquid oxygen, liquid nitrogen or liquid argon. cold energy in.
[0023] The high-pressure side suction cooling system includes a high-pressure pipeline 1 and a suction cooling device 2 arranged inside the high-pressure pipeline 1 . The hi...
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The invention discloses a cold energy recovery device for a heat pipe type high-pressure low-temperature liquid gasification heating process. The device comprises a high-pressure side cold absorption system and a low-pressure side cold release system. The high-pressure side cold absorption system comprises a high-pressure pipeline and a cold absorption device arranged in the high-pressure pipeline, and the low-pressure side cold release system comprises a secondary refrigerant box and a cold release device arranged in the secondary refrigerant box; the high-pressure low-temperature liquid enters the high-pressure pipeline to be gasified and then flows out, and a gaseous working medium in the cold absorption device absorbs cold energy generated by gasification of the high-pressure low-temperature liquid, is condensed into liquid, flows into the cold release device, absorbs heat from the secondary refrigerant to be gasified and then returns to the cold absorption device. The cooled secondary refrigerant is conveyed to an external cold energy utilization device through a secondary refrigerant pump to release cold energy and then returns to the secondary refrigerant box. The device can be used for recovering and utilizing cold energy in the gasification process of high-pressure and low-temperature liquid, and can also be used for recovering and utilizing gas waste heat under medium-pressure, low-pressure or negative-pressure working conditions.
Description
technical field [0001] The invention relates to the technical field of heat pipe heat exchangers, in particular to a cold energy recovery device used in a high-pressure low-temperature liquid gasification process. Background technique [0002] For the high-pressure liquid air in the energy release section of the liquid compressed air energy storage system and the gasification of LNG during the LNG gasification process, these two low-temperature liquid working fluids have high pressure and low temperature, which requires high heat exchangers. If a shell-and-tube heat exchanger is used, a bulky heat exchanger is required due to the low heat transfer coefficient on the air side. If a plate heat exchanger is used, it cannot be applied because the plate heat exchanger cannot bear the large pressure difference on both sides. The heat pipe has the advantages of good heat transfer performance and can increase the heat transfer area on the low heat transfer coefficient side, and is ...
Claims
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IPC IPC(8): F28D15/02F28D21/00
CPCF28D15/02F28D21/0001
Inventor 张建军冯自平宋文吉
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI