Low-temperature hydrogen liquefaction device and use method

A low-temperature, hydrogen technology, applied in the field of hydrogen energy, can solve the problems of high energy consumption and complicated hydrogen purification process, and achieve the effects of low energy consumption, storage stability and strong operability.

Inactive Publication Date: 2022-03-01
HANGZHOU HANGYANG
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  • Abstract
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Problems solved by technology

The invention can obtain high-purity liquid hydrogen products, and at the same time solves the problems of complex hydrogen purification process and high en...

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  • Low-temperature hydrogen liquefaction device and use method
  • Low-temperature hydrogen liquefaction device and use method

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with accompanying drawing: figure 1 As shown, the embodiment of the present invention provides a low-temperature hydrogen liquefaction device, which includes a vacuum cold box 115 made of stainless steel or carbon steel. The vacuum cold box 115 is provided with a first cryogenic adsorber 101A, a second cryogenic adsorber 101B, first-stage heat exchanger 103, second-stage heat exchanger 104, third-stage heat exchanger 105, fourth-stage heat exchanger 106, fifth-stage heat exchanger 107, sixth-stage heat exchanger 108 , the seventh-stage heat exchanger 109, the gas-liquid separator 110, the first-stage expander 111, and the second-stage expander 112 are connected to each other through valves and pipelines, wherein the second-stage heat exchanger 104 to the seventh-stage heat exchanger An ortho-parahydrogen catalyst 114 is arranged in 109, and a first-stage circulating hydrogen compressor unit 102 and a...

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Abstract

According to the low-temperature hydrogen liquefaction device and the using method, low-temperature hydrogen-containing mixed gas from an alkane dehydrogenation device, a hydrogen/carbon monoxide cryogenic separation device, a low-temperature liquid nitrogen washing device and the like is directly purified and liquefied to obtain a high-purity liquid hydrogen product. The low-temperature hydrogen-containing mixed gas is subjected to low-temperature adsorption to remove impurities in hydrogen, and then enters the multi-stage heat exchanger to exchange heat with low-temperature circulating hydrogen and liquid nitrogen, so that the hydrogen is cooled stage by stage, and finally, a liquid hydrogen product is obtained. The invention provides the device and the method for directly preparing the liquid hydrogen from the low-temperature hydrogen-containing mixed gas, a low-temperature adsorption purification process is adopted, the device has the characteristics of high adsorption capacity, low loss and low energy consumption compared with normal-temperature adsorption, and hydrogen cycle refrigeration is adopted, so that the liquefaction energy consumption is lower. The invention solves the problems of complex hydrogen-containing mixed gas liquefaction process and high energy consumption, has the advantages of energy conservation, high yield, low investment, easiness in adjustment and the like, and is suitable for large-scale hydrogen liquefaction devices.

Description

technical field [0001] The invention relates to a low-temperature hydrogen liquefaction device and a use method, belonging to the field of hydrogen energy. Background technique [0002] As a new type of energy, hydrogen energy has the advantages of high calorific value, green and pollution-free. However, the high cost and small delivery capacity of high-pressure hydrogen transportation have become a major bottleneck for the large-scale application of hydrogen energy. The large-scale application of hydrogen energy needs to solve a series of problems such as production, storage, transportation, and application, and storage and transportation are the key links in the application of hydrogen energy. Hydrogen storage and transportation are mainly in two ways: high-pressure hydrogen and liquid hydrogen. The use of liquid hydrogen storage and transportation has the following advantages: (1) The comprehensive cost of liquid hydrogen storage and transportation is lower; (2) The stor...

Claims

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Application Information

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IPC IPC(8): F25J1/02
CPCF25J1/0237F25J1/001F25J2210/42F25J1/0204F25J2220/02F25J1/005F25J2270/16F25J1/0221F25J1/0067F25J1/0052
Inventor 韩一松秦燕徐志明王佳伟郝雅博张宽欧阳仟
Owner HANGZHOU HANGYANG
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