HYDROGEN CRYOGENIC SYSTEM WITH COLUMN OF LOW-TEMPERATURE RECTIFICATION OF GAS MIXTURE Russian patent published in 2021 - IPC C01B3/50 F25J3/02 

FIELD: cryogenic engineering.

SUBSTANCE: invention relates to the field of cryogenic technology and can be used in hydrogen cryogenic systems and installations, as well as in bench and laboratory systems where studies and tests of columns of low-temperature rectification of a gas mixture are carried out. The hydrogen cryogenic system with a low-temperature gas mixture rectification column includes a gasholder, a compressor, an oil purification unit, a technical hydrogen ramp, a pure hydrogen ramp, a low-temperature low-pressure purification unit and a hydrogen liquefier made in the form of a preliminary four-flow heat exchanger made of soldered tubes, a nitrogen bath with a tubular heat exchanger, a main three-flow heat exchanger made of soldered tubes, a throttle valve and a liquid hydrogen collector placed in a vacuum vessel, in this case, the liquid hydrogen collector and the main heat exchanger are connected by cryogenic pipelines to the liquid hydrogen bath, into which a low-temperature rectification column of the gas mixture is built, placed in an autonomous vacuum casing, while the main heat exchanger with a throttle valve are installed in a vacuum casing, where a liquid hydrogen bath with a column is placed, and connected to a liquid hydrogen bath, and a preliminary heat exchanger and a nitrogen bath in the block with powder-vacuum insulation, the heat exchangers are made of twisted double-flow tubes finned with wire, and in the nitrogen bath after the tubular heat exchanger, an adsorber is built in, which is connected to the main heat exchanger, and also connected to the pure hydrogen ramp through an additional heat exchanger, and also, the hydrogen compression compressor is made without lubrication and with adjustable performance, and a vacuum pump is installed at the outlet of the reverse flow of hydrogen from the preliminary heat exchanger.

EFFECT: simplification of the technological mode, reduction in the start-up time and increase in the duration of continuous operation of the hydrogen cryogenic system.

1 cl, 1 dwg