Device for preparing liquid hydrogen by using low-temperature hydrogen-containing mixed gas and use method
A mixed gas and low-temperature technology, applied in the field of hydrogen energy, can solve the problems of high energy consumption and complex hydrogen purification process, and achieve the effects of low energy consumption, guaranteed storage stability, and strong operability
Inactive Publication Date: 2022-03-01
HANGZHOU HANGYANG
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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 energy consumption of low-temperature hydrogen-containing mixed gas, and has the characteristics of energy saving, high yield, small investment, and easy adjustment.
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[0027] The present invention will be described in detail below in conjunction with accompanying drawing: figure 1As shown, the present invention is a device for producing liquid hydrogen by using a low-temperature hydrogen-containing mixed gas. The device includes a vacuum cold box 111, and a first cryogenic adsorber 101A and a second cryogenic adsorber 101B are arranged in the vacuum cold box 111. , the first-stage heat exchanger 103, the second-stage heat exchanger 104, the third-stage heat exchanger 105, the fourth-stage heat exchanger 106, the first-stage expander 108, and the second-stage expander 109, through valves Connected with the connecting pipeline, wherein the second-stage heat exchanger 104, the third-stage heat exchanger 105, and the fourth-stage heat exchanger 106 are provided with an ortho-parahydrogen catalyst 110, and a helium compressor unit 102 is provided outside the vacuum cold box 111 And liquid hydrogen storage tank 107.
[0028] The valves include cr...
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The invention relates to a device for preparing liquid hydrogen by using low-temperature hydrogen-containing mixed gas and a use method thereof, the low-temperature hydrogen-containing mixed gas from an alkane dehydrogenation device, a hydrogen / carbon monoxide cryogenic separation device, a low-temperature liquid nitrogen wash 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 the liquid hydrogen is prepared. And the hydrogen enters a multi-stage heat exchanger and exchanges heat with low-temperature helium and liquid nitrogen, so that step-by-step cooling of the hydrogen is realized, and finally a liquid hydrogen product is obtained. The low-temperature adsorption purification process adopted by the invention has the characteristics of high adsorption capacity, low loss and low energy consumption compared with normal-temperature adsorption. The invention solves the problems of complex liquefaction process and high energy consumption of the hydrogen-containing mixed gas, and has the advantages of energy conservation, high yield, small investment, easiness in adjustment and the like.
Description
technical field [0001] The invention relates to a device and a use method for producing liquid hydrogen by using low-temperature hydrogen-containing mixed gas, 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 st...
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IPC IPC(8): F25J1/02
CPCF25J1/0237F25J1/001F25J2220/02F25J1/0221F25J1/005F25J2270/16F25J2210/42F25J1/0065F25J1/0204
Inventor 王佳伟韩一松徐志明秦燕沈瑾赵广成胡沛
Owner HANGZHOU HANGYANG