Treatment device for tritium gas and tritiated water

Abstract

The invention provides a treatment device for tritium gas and tritiated water, which integrates catalytic oxidation of the tritium gas with collection of tritiated water together, and can be used as a tritium sampler. The device comprises a tritium gas catalytic oxidation working room and a refrigeration system, wherein to-be-treated exhaust gas containing tritium firstly flows through the tritium gas catalytic oxidation working room; under the action of a catalyst, the tritium gas is subjected to catalytic oxidation to generate tritiated water vapor; the tritiated water vapor enters into a convection chamber of the refrigeration system and is quickly condensed to generate liquid tritiated water; the liquid tritiated water is collected by a collector. The treatment device for tritium gas and tritiated water, disclosed by the invention, can be directly connected to a tritium gas circulating front end of a purification system for treatment of the to-be-treated exhaust gas containing tritium, and also can be connected to a tritium circulating middle part of a nuclear facility, in order to monitor tritium in the nuclear facility environment in real time by catalyzing, condensing and collecting tritium in the atmosphere; meanwhile, the device is further applicable to emergency treatment for high radioactive tritium gas and tritiated water in the nuclear accident field.

Description

technical field [0001] The invention belongs to the technical field of radiation protection and environmental protection, and in particular relates to a treatment device for tritium gas and tritiated water. Background technique [0002] Many nuclear facility workplaces will produce waste gas containing highly radioactive tritium gas and tritiated water. The direct discharge of these tritium-containing waste gas will pollute the environment. It must be purified to make the tritium content of the discharge equal to or lower than that of tritium Emission standards to meet the requirements of environmental protection. At present, the tritium-containing waste gas generated in radioactive sites is mainly purified by a huge tritium gas tail gas purification system and discharged to the environment through a single chimney. The tritium gas tail gas purification system mainly uses catalyst catalytic oxidation and molecular sieve dry adsorption to process and absorb tritium-containin...

AI Technical Summary

Problems solved by technology

The tritium exhaust gas purification system has the disadvantages of producing a lot of waste, low efficiency, and high cost when dealing with tritium-containing exhaust gas

Moreover, the direct use of tritium gas exhaust purification system to purify and treat tritium-containing waste gas requires frequent replacement of purification materials, and the exhaust gas contains high tritium indicators, which is likely to cause safety hazards to operators and the environment. It is urgent to add a pre-device to improve the efficiency of the system. Tritium gas and tritiated water processing capacity

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