Oxidation separation, purification, regeneration and utilization method and device for fusion reactor hot room by means of cleaning waste gas

Abstract

The invention relates to an oxidation separation, purification, regeneration and utilization method and device for a fusion reactor hot room by means of cleaning waste gas. The method includes the four process procedures of cleaning and decontamination, filtering and purification of solid and liquid impurities, oxidization separation and purification of gaseous radioactive impurities, preparation of low-temperature power gas, regeneration of volatile particles and long-distance pneumatic conveying of the volatile particles. The original cleaning waste gas is used, and the radioactive particles, residual radioactive gas and cleaning media can be collected in a classified mode and separated; the problem about minimization of radioactive waste in the hot room is solved. The radioactive particles and gaseous nuclear fuel can be effectively collected while it is guaranteed that the cleaning waste gas does not contaminate the environment as radioactive effluent. Besides, the original cleaning media can be recycled and reused so that a carbon dioxide dry ice blast cleaning scheme can become the preferred scheme for cleaning polluted radioactive surfaces in the hot room on the basis. The process scheme is simple in loop structure, easy to implement and suitable for the hot room environment of remote control operation.

Description

technical field [0001] The invention relates to a cleaning waste gas oxidation, separation, purification and regeneration method and equipment in a thermal chamber, which is suitable for the treatment of the waste gas produced in the process of cleaning and decontamination during the maintenance process of the internal activation of the fusion device facing the plasma and the maintenance process of the internal device in the thermal chamber. It 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 renewable energy such as wind energy and solar energy cannot fully meet human needs for energy at present. 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 in the safe utilization of fission nuclear energy by human beings. With the progress of the ITER project, fusion...

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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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