A hydrogen isotope exchange membrane reaction module

Abstract

The invention discloses a hydrogen isotope exchange membrane reaction assembly, comprising a palladium composite membrane tube, a corrugated stainless steel tube and an external sleeve, wherein a thermocouple sleeve is in a threaded connection with one end (close to the corrugated stainless steel tube) of the external sleeve and an osmosis gas outlet is mechanically welded at the other end of the external sleeve; a branch pipe serving as a hydrogen isotope exchange raw gas inlet is arranged at the upper end of the thermocouple sleeve; a tail gas outlet is formed at the upper end of the external sleeve and close to the corrugated stainless steel tube, and a carrier gas He and Q2O raw gas inlet is formed at the lower end of the external sleeve far and is away from the corrugated stainless steel tube. According to the hydrogen isotope exchange membrane reaction assembly disclosed by the invention, a small amount of combined deuterium and tritium can be displaced and separated out by using hydrogen isotope exchange reaction, and a part of products are separated in situ out of the system during reaction, so that very high conversion rate and decontamination factors are obtained, and the recovery rate of deuterium and tritium is improved; the hydrogen isotope exchange membrane reaction assembly can be used for treating high-concentration tritium water and treating plasma ash discharge gas in fusion reaction, and can also be used for industrially producing high-purity hydrogen.

Description

technical field [0001] The invention relates to a device for treating high-concentration tritium water and plasma ash exhaust gas, in particular to a hydrogen isotope exchange membrane reaction component. Background technique [0002] Energy and the environment are the basis for human survival and development. With the rapid development of the national economy, people's demand for energy is becoming stronger and stronger. Due to the shortage of fossil fuels and the increasing pollution of the environment, researchers have turned their attention to clean, efficient and controllable thermonuclear fusion energy. During the operation of the fusion device, under certain normal operating conditions (such as cleaning the first wall), a small amount (2-4kg) of very high concentration tritiated water (activity about 1.4×10 6 Ci / kg, close to the stoichiometric ratio of DTO), a small amount of high-concentration tritium water will also be produced under some unexpected conditions (su...

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of this technique is that the selected palladium film is thick, which leads to the hydrogen isotope Q 2 Slower permeation rate reduces separation rate

Theoretically, because reducing the palladium film thickness will speed up the Q 2 permeation, which may have a beneficial effect on the hydrogen isotope exchange reaction in the catalytic exchange membrane reaction module, but there is no relevant report

[0009] 2. After the Pd-based film absorbs hydrogen, the lattice expansion will occur, and the membrane reaction module generally operates at a high temperature above 400°C, which will cause the Pd-based alloy tube to grow or deform significantly

[0012] The disadvantage of these technologies is that the palladium membrane is only used as a subsequent hydrogen purification and separation device, and the catalytic reaction function of the reaction component cannot be utilized.

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