Hydrogen liquefaction device with pre-cooling throttling function

A liquefaction device and pre-cooling technology, applied in refrigeration and liquefaction, liquefaction, cold treatment and separation, etc., can solve the problems of poor liquefaction effect of raw material hydrogen, affecting hydrogen production efficiency, etc., and achieve the effect of reducing irreversibility and enhancing thermal efficiency.

Pending Publication Date: 2021-03-23
浙江海畅气体股份有限公司
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Problems solved by technology

The liquefaction effect of raw material hydrogen in a single pre-cooled liqu

Method used

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  • Hydrogen liquefaction device with pre-cooling throttling function
  • Hydrogen liquefaction device with pre-cooling throttling function
  • Hydrogen liquefaction device with pre-cooling throttling function

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Embodiment Construction

[0017] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] A hydrogen liquefaction device with precooling throttling, such as figure 1 As shown, it includes the hydrogen liquefaction route for transporting raw hydrogen and the hydrogen circulation route for transporting recycled hydrogen. The two routes respectively pass through the first-stage precooling section, the second-stage precooling section and the liquefaction section.

[0019] The primary pre-cooling section is equipped with a heat exchanger E1, an atmospheric pressure liquid nitrogen precooler E4, and an adsorber A1 and an adsorber II A2 for absorbing impurities in hydrogen. The pressure liquid nitrogen precooler E4 is connected to the atmosphere through the normal pressure pipeline, and the normal pressure pipeline passes through the heat exchanger one E1. Wherein, in order to improve and ensure the conversi...

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Abstract

The invention belongs to the technical field of hydrogen production equipment, and particularly relates to a hydrogen liquefaction device with a pre-cooling throttling function. The device comprises ahydrogen liquefaction route for conveying raw material hydrogen and a hydrogen circulation route for conveying circulating hydrogen, and the two routes respectively and sequentially pass through a primary pre-cooling section, a secondary pre-cooling section and a liquefaction section. The primary pre-cooling section is provided with a heat exchanger I and a normal-pressure liquid nitrogen pre-cooler; and the secondary pre-cooling section is provided with a heat exchanger II and a negative-pressure liquid nitrogen pre-cooler. After the hydrogen liquefaction route passes through the first heatexchanger and the normal-pressure liquid nitrogen pre-cooler to be precooled, the hydrogen liquefaction route enters the second heat exchanger and the negative-pressure liquid nitrogen pre-cooler to be continuously cooled. According to the hydrogen liquefaction device with the pre-cooling throttling function, a two-stage pre-cooling structure of the normal-pressure liquid nitrogen pre-cooler and the negative-pressure liquid nitrogen pre-cooler is adopted, and the liquefaction effect is better.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production equipment, and in particular relates to a hydrogen liquefaction device with precooling and throttling. Background technique [0002] Existing precooling of hydrogen liquefaction equipment usually adopts a single liquid nitrogen precooling device, such as the invention patent application with publication number CN108469150A. The liquefaction effect of raw material hydrogen in a single pre-cooled liquefaction system is poor, which affects the efficiency of hydrogen production. Contents of the invention [0003] The object of the present invention is to provide a hydrogen liquefaction device with precooling throttling, which adopts a two-stage precooling structure of an atmospheric pressure liquid nitrogen precooler and a negative pressure liquid nitrogen precooler, so that the liquefaction effect is better. [0004] The purpose of the present invention is achieved in this way: a hydro...

Claims

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Application Information

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IPC IPC(8): F25J1/02
CPCF25J1/001F25J1/0257F25J2205/60F25J2215/10F25J1/004F25J1/0045F25J1/0224F25J2210/42
Inventor 林定标陈崇文陈辉卓涛涛
Owner 浙江海畅气体股份有限公司
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