Method and device for purifying and recycling cleaning waste gas of hot cell of fusion reactor by cryogenic rectification

Abstract

The invention relates to a method and a device for purifying and recycling cleaning waste gas of a hot cell of a fusion reactor by cryogenic rectification. The method comprises six technological processes including a decontaminating cleaning technology, a filtration and purification technology of solid and liquid-state impurities, a carbon dioxide cryogenic rectification separation technology, a low-temperature power gas preparation technology, a volatile granule regeneration technology and a long-distance pneumatic transmission technology. Radioactive particles and residual radioactive gases are collected in a sorting way together with or separated from a cleaning medium by utilizing the original cleaning waste gas. The effect that radioactive wastes in the hot cell are minimized can be realized. The radioactive particles and gaseous nuclear fuel are effectively collected while the cleaning waste gas is enabled not to pollute the environment as radioactive effluent, and an originally used cleaning medium is enabled to be recycled; on the basis, a carbon dioxide dry ice blasting cleaning scheme becomes a first selected option for cleaning a polluted radioactive surface in the hot cell; furthermore, the process scheme is simple in loop structure and easy to implement, thus being suitable for the remote control operation hot cell environment.

Description

Technical field [0001] The invention relates to a method and a device for purifying, purifying, purifying, and regenerating exhaust gas in a fusion reactor hot chamber by cryogenic distillation, which is suitable for plasma-oriented internal activation of a fusion device and tritium-retained internal components during the cleaning and decontamination process in the hot chamber maintenance process The treatment of waste gas belongs to the field of radioactive pollution control and treatment. Background technique [0002] The gradual depletion of fossil energy is a well-known fact, and at present, renewable energy such as wind and solar energy cannot fully meet human demand for energy. The discovery, utilization and development of nuclear energy have gone through more than half a century, but there is still a certain degree of uncertainty regarding the safe use of fission nuclear energy by mankind. With the progress of the ITER project, fusion has gradually entered people's field ...

AI Technical Summary

Problems solved by technology

At present, there is no specific cleaning and decontamination process for the activation materials and tritium retention components inside the fusion reactor. Large fusion devices such as ITER (International Thermonuclear Experimental Reactor) tentatively designate dry ice blasting cleaning as the preferred cleaning solution, but related The data show that the detritium removal system in the hot chamber cannot handle a large amount of carbon dioxide gas, so related research has been shelved, and it is urgent to design a treatment process that can handle dry ice blasting and cleaning exhaust gas

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