Inert gas stagnation bed activated carbon performance test system for radioactive waste gas treatment unit

Abstract

The invention relates to the field of gaseous radioactive waste processing technology, specifically to a testing system for the performance of active carbon in an inert gas delay bed of a unit. 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 protection bed used for adsorbing organic substances in gas via a humidifying or heating device; the protection bed and a radioactive inert gas source are respectively connected with a mixed measuring tank; the mixed measuring tank is connected with an active carbon testing bed; a plurality of pressure and temperature sensors are arranged on the active carbon testing bed; the outlet of the active carbon testing bed is connected with a radioactivity measuring apparatus via a filter membrane; a branch gas passage is arranged between the inlet of the active carbon testing bed and the mixed measuring tank and connected with a chimney; and a pressure sensor and a humiture sensor are arranged on the mixed measuring tank. The active carbon testing bed and the radioactive source mixed measuring tank are placed in a constant-temperature cabinet, and a purifying and dedusting system is cooperatively used.

Description

technical field [0001] The invention relates to radioactive waste gas treatment technology, in particular to a radioactive waste gas treatment unit inert gas retention bed activated carbon performance test 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 decay method of compressed tank storage was often used to reduce the radioactivity to a dischargeable level, but the decay tank is large in size and has high requirements for gas compressors. In addition, it is not safe to store a large amount of hydrogen for a long time. In recent years, this method has gradually been replaced by the more safe, economical and feasible activated carbon retention bed adsorption decay method. my country's Qinshan Phase III, Tianwan Nuclear Power Plant and the third-generation reactor nuclear power plant currently under construction...

AI Technical Summary

Problems solved by technology

In the early days, the decay method of compressed tank storage was often used to reduce the radioactivity to a dischargeable level, but the decay tank is large in size and has high requirements for gas compressors. In addition, it is not safe to store a large amount of hydrogen for a long time

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