Hydrogen isotope efficient recovery apparatus based on catalysis reaction and membrane separation cascade connection, and recovery method thereof

Abstract

The present invention discloses a hydrogen isotope efficient recovery apparatus based on catalysis reaction and membrane separation cascade connection, and a recovery method thereof. In the prior art, when the existing membrane reactor performs hydrogen isotope recovery, the more impurity gases in the raw materials can cause the reduced hydrogen permeation rate of the palladium-based membrane, and the optimal use temperature and the catalysis reaction rate are difficult to concurrently achieve. A purpose of the present invention is to solve the problems in the prior art. The apparatus comprises a raw material gas, a fixed bed reactor, a palladium membrane hydrogen separation device, a gas storage tank, a booster pump and the like. According to the present invention, the catalysis reaction and membrane separation non-in-situ integrated mode is used so as to effectively improve the utilization rate of the palladium membrane, reduce the poisoning effect of the impurity gas on the palladium membrane, prolong the service life of the palladium membrane, and effectively improve the recovery rate of the hydrogen isotope; the closed loop can formed so as to obtain the high hydrogen isotope recovery efficiency; and the apparatus and the method of the present invention have characteristics of reasonable design, strong adaptability and high recovery rate, can meet the hydrogen isotope recovery requirements, and provides important significance for achievement of the fusion reactor deuterium-tritium fuel circulation and improvement of the economy and the security of the reactor.

Description

technical field [0001] The invention relates to the field of fusion reactors, especially the field of deuterium-tritium fusion fuel cycle, and specifically relates to a hydrogen isotope efficient recovery device and recovery method based on catalytic reaction and membrane separation cascade. Background technique [0002] At present, with the shortage of fossil fuels and the increasingly serious environmental pollution, fusion energy has gradually attracted people's attention. In the development of fusion energy, the deuterium-tritium fuel cycle is an engineering technical problem that must be solved, and it is also the basis for its commercial application. Because the reaction rate of deuterium and tritium in the fusion device is very low, a large amount of unreacted deuterium and tritium exists in the exhaust gas. From the perspective of safety, environmental protection and economy, the exhaust gas must be treated to recover the deuterium and tritium fuel. Improve the util...

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Problems solved by technology

[0009] The purpose of the present invention is to: when the existing membrane reactor is used for hydrogen isotope recovery, more impurity gas in the raw material will reduce the hydrogen permeation rate and separation efficiency of the palladium-based membrane, and its optimum operating temperature is difficult to be compared with the catalytic reaction rate. Taking into account the problem, provide a hydrogen isotope efficient recovery device and recovery method based on catalytic reaction and membrane separation cascade

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