Tritium gas purified tail gas storage and tinning system

Abstract

The invention belongs to the technical field of gas purification and discloses a tritium gas purification system. The system comprises a tritium gas introduction system which is connected with each other or disconnected via valves, a circulation separation system and a tail gas monitoring system. The tritium gas introduction system comprises a vacuum pump, a cold trap, a buffer bottle, a vacuum gauge and a bottle for storing tritium and uranium to be purified. The circulation separation system comprises two flow-type uranium beds, a tritium-storing uranium bed and a circulating pump, wherein the two flow-type uranium beds and the tritium-storing uranium bed are serially connected through pipelines and are all provided with an electric-heating device. The two flow-type uranium beds respectively adsorbs impurity gas other than tritium gas or helium gas, and stores the tritium gas and releases the tritium gas after storing the tritium gas; the tritium-storing uranium bed stores the released-purified tritium gas and is connected with a tail gas tank of the tail gas monitoring system through pipelines; the tail gas monitoring system comprises the tail gas tank, a tail gas monitoring pressure meter and the circulating pump. The purification system has advantages of almost 100% recovery rate of tritium gas and more than 99% purity of tritium gas.

Description

technical field [0001] The invention belongs to the technical field of gas purification, and in particular relates to a tritium gas purification system. Background technique [0002] Tritium is a radioactive isotope of hydrogen, which has the advantages of low toxicity, high specific activity, and good autoradiography properties. It has been widely used in scientific tracer research, self-luminous light source, tritium target development and other fields. Fusion fuel. Large quantities of tritium are usually stored in the form of metal tritides, especially uranium tritides. [0003] Uranium tritide is recognized as an ideal tritium storage material, mainly due to its low equilibrium decomposition pressure, desorption temperature, large reversible tritium absorption capacity, fast desorption rate, and the ability to effectively avoid tritium High temperature permeation loss and slight tritium aging effect and other advantages. The principle of tritium storage is that metal ...

AI Technical Summary

Problems solved by technology

At present, the commonly used tritium gas purification is to use Pd-Ag diffusion membrane for purification. This method is suitable for large-scale tritium gas purification, but the cost is high and tritium remains in the tail gas, and the tritium recovery rate is relatively low.

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