Testing system for performance of drying agent of dehumidifying and drying unit of gaseous radioactive waste processing system

Abstract

The invention relates to gaseous radioactive waste processing technology, specifically to a testing system for the performance of a drying agent of a dehumidifying and drying unit of a gaseous radioactive waste processing system. The testing system comprises a nitrogen supplying device and a compressed air supplying device; the nitrogen supplying device and the compressed air supplying device are separately connected with a first measuring tank; the outlet of the first measuring tank is connected with the inlet of a drying agent testing bed; the outlet of the drying agent testing bed is connected with a second measuring tank; the outlet of the second measuring tank is connected with a chimney; pressure sensors and temperature sensors are arranged on the drying agent testing bed; and a pressure sensor and a humiture sensor are respectively arranged on the first measuring tank and the second measuring tank. The testing system can adjust relative humidity and temperature of air flow so as to realize testing of the performance of the drying agent under different parameter conditions.

Description

technical field [0001] The invention relates to radioactive waste gas treatment technology, in particular to a desiccant performance test system for a dehumidification and drying unit of a radioactive waste gas treatment system. Background technique [0002] A variety of fission gas products are released from the core during reactor operation, including the radioactive noble process gases krypton and xenon. In the early days, the compressed tank storage decay method was often used to reduce the radioactivity to a dischargeable level. However, this method stores the upstream exhaust gas under pressure, and the concentration of the concentrated gas's radioactive activity is greatly increased. High-pressure storage increases the risk of radioactive leakage. , and increase the difficulty and cost of personnel radiation protection and shielding; secondly, due to the high concentration of hydrogen in the waste gas to be decayed, long-term high-pressure storage has safety risks suc...

AI Technical Summary

Problems solved by technology

The activated carbon in the stagnant bed is sensitive to the humidity of the air flow. The adsorption performance of the activated carbon will decrease or even fail after being damp, which may lead to the shutdown of the exhaust gas treatment system and the upstream system. Therefore, the humidity control of the exhaust gas is the key factor affecting the life of the activated carbon and the availability of the system.

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