Enrichment and separation method of heavy-nucleus hydrogen isotopes

A hydrogen isotope and separation method technology, applied in the field of heavy nuclear hydrogen isotope enrichment and separation, can solve the problems of low separation capacity, long separation cycle, incomplete desorption of separation column, etc., and achieve the effect of easy control of reaction conditions

Active Publication Date: 2020-11-03
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

However, the technology based solely on temperature swing adsorption often has the disadvantages of long separation cycle and low separation capacity, and the technology based solely on pressure swing adsorption often has the disadvantages of incomplete desorption of the separation column and poor process stability.

Method used

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  • Enrichment and separation method of heavy-nucleus hydrogen isotopes

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Embodiment 1

[0106] figure 1 A schematic diagram of a device for the separation of heavy nuclear hydrogen isotopes used in the present invention, such as figure 1 As shown, including 1-vacuum pump (VG), 2-raw material tank, 3 or TP-temperature, pressure sensor, 4-mass flow controller 1 (MFC1), 5-separation column 1, 6-separation column 2, 7- Transfer pump, 8-vacuum pump, 9-mass flow controller 2 (MFC2), 10-tail gas tank, 11-product tank, 12-tail gas transfer bed, 13-product gas transfer bed, 14-valve, the arrow points to the gas flow direction .

[0107] Separation column 1 and separation column 2 are both made of stainless steel tubes with a length of 10m, an inner diameter of 10mm and a thickness of 2mm to make spiral tubes with a middle diameter of 250mm, and are filled with 5A molecular sieve columns with an average inner diameter of 2.18mm, and the charging amount is 0.5kg , material bulk density is 650kg / m 3 .

[0108] The raw material composition of hydrogen isotope mixed gas to b...

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Abstract

The invention provides an enrichment and separation method of heavy-nucleus hydrogen isotopes, and belongs to the field of gas separation. Hydrogen isotope mixed gas to be separated is cyclically transferred between two separation columns. Through synergistic circulation, the two separation columns are in a low-temperature environment, and recovered to the room temperature, gas desorption is promoted, pressure swing adsorption and desorption and temperature swing adsorption and desorption are combined, so that the gas is stably distributed. Then to-be-separated hydrogen isotope mixed gas is supplemented after transferring the product gas so as to maintain the operation stability of the separation system, synergistic circulation iscontinuously performed to enable the two separation columnsto be in a low-temperature environment, and recover to the room temperature, thus promoting gas desorption. The pressure swing adsorption and desorption with temperature swing adsorption and desorption are combined to realize extraction of tail gas and the product gas; the gas in the separation columns is still stably distributed, so that the separation capacity is improved, the low hydrogen isotope storage amount is kept, stable and continuous enrichment is achieved in the mode that the two separation columns work in a combined mode, and the operation steps are simplified.

Description

technical field [0001] The invention relates to the field of gas separation, in particular to a method for enriching and separating heavy nuclear hydrogen isotopes. Background technique [0002] Hydrogen isotopes have been widely used in the fields of modern industry, energy and nuclear energy. For example, deuterium and tritium are the basic raw materials for nuclear fusion. and other advantages have attracted much attention. Due to the similar physical and chemical properties of hydrogen isotopes, it is difficult to separate hydrogen isotopes, making hydrogen isotope separation one of the important problems that must be solved in nuclear fuel cycle and fusion reactors. [0003] Hydrogen isotope separation methods in the prior art include cryogenic rectification, thermal diffusion column method, membrane permeation method, gas chromatography and so on. Among them, the cryogenic rectification method has the advantages of strong separation ability and large processing scale...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D59/26B01D53/04C01B4/00
CPCB01D59/26B01D53/047B01D53/0462C01B4/00B01D2253/116Y02E30/10
Inventor 雷强华罗德礼熊义富张光辉秦城杨莞闫立涛丁海成杨鹏飞
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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