Parahydrogen enrichment device suitable for high-flow and high-pressure conditions

Abstract

The invention provides a parahydrogen enrichment device suitable for high-flow and high-pressure conditions. The parahydrogen enrichment device comprises a temperature detection chamber, a temperaturedevice line protection pipe, a double-chamber connecting pipe, a parahydrogen enrichment chamber, a heat exchange rod, a pressure-maintaining filter cap, an input interface, a cooling pipe, an outputinterface, a catalyst and a temperature display, wherein the temperature detection chamber is connected with the cooling pipe, the double-chamber connecting pipe and the temperature device line protection pipe; the double-chamber connecting pipe is connected with the temperature detection chamber and the parahydrogen enrichment chamber; the parahydrogen enrichment chamber is in a sleeve form andis provided with the heat exchange rod and an outer pipe; the bottom of the parahydrogen enrichment chamber is connected with the double-chamber connecting pipe; the top of the parahydrogen enrichmentchamber is connected with the output interface; an annular cavity between the heat exchange rod and the parahydrogen enrichment chamber is filled with a catalyst; the heat exchange rod is mounted atthe bottom of an inner cavity of the parahydrogen enrichment chamber; the pressure-maintaining filter cap is provided with a filter layer and a pressure-maintaining layer and mounted at the top of theheat exchange rod; filter air holes are formed in the bottom of the pressure-maintaining filter cap; and pressure-maintaining air holes are formed in the side wall of the top of the pressure-maintaining filter cap. By means of such a technical scheme, heat transfer effect can be improved, certain pressure is kept, and high-flow conversion efficiency is improved.

Description

technical field [0001] The invention relates to the field of hydrogen production equipment, in particular to a parahydrogen enrichment device suitable for large flow and high pressure conditions. Background technique [0002] Hydrogen is a mixture of orthohydrogen and parahydrogen, and its physical properties are a colorless, odorless, transparent gas. The difference between orthohydrogen and parahydrogen is that the hydrogen molecules are two different spin isomers, which are completely the same in chemical reactions and slightly different in physical properties. When hydrogen is at room temperature or higher, the mixing ratio of positive and secondary hydrogen is 3:1, which is called normal hydrogen or standard hydrogen. As the temperature decreases, positive hydrogen will spontaneously flow to Parahydrogen conversion, but at a significantly slower conversion rate than in the presence of a catalyst. Generally, when preparing liquid hydrogen, it is necessary to start the ...

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Problems solved by technology

[0007] None of the methods contained in the above materials can achieve a good heat exchange effect, and the parahydrogen conversion effect under high flow and high pressure is not good enough, and the temperature of the hydrogen gas entering the conversion chamber cannot be detected, so it is impossible to accurately determine the reason for the decrease in efficiency

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