Movable regeneration device of drying bed

Abstract

The invention relates to a movable regeneration device of a drying bed, which comprises a nitrogen source and an air source, air provided by the air source is cooled and dried and then is mixed with nitrogen provided by the nitrogen source, the mixed air and nitrogen enter a gas electric heater to be heated and are dried by a dryer, and the air and the nitrogen are recycled. The dry mixed gas flows out through the regenerated gas flow outlet, the gas temperature, flow and pressure parameters in the device are set and controlled through the parameter display and control system, stable and dry hot nitrogen flow can be provided for rapid regeneration of the drying bed, and meanwhile the device has high operation simplicity, mobility and safety. The movable regeneration device of the drying bed has the advantages of being small in size, flexible to move, convenient to operate, small in nitrogen consumption and good in field adaptability, and various performance indexes can meet the regeneration requirements of the drying bed.

Description

technical field [0001] The invention belongs to the field of nuclear industry, in particular to a mobile regeneration device of a drying bed. Background technique [0002] The exhaust gas treatment system of the third-generation reactor-type nuclear power plant and some nuclear facilities adopts activated carbon retention bed to carry out the retention and decay of the fission gas products in the process exhaust gas, so as to reduce the radioactive level of the exhaust gas. The relative humidity of the airflow entering the activated carbon retention bed directly affects the retention performance of the activated carbon in the retention bed. If the relative humidity of the airflow is too high, the adsorption performance of the activated carbon will decrease or even fail after moisture absorption. Therefore, the control of the exhaust gas humidity will affect the life of the activated carbon and system availability. The key factor. [0003] At present, a drying bed (some nucl...

AI Technical Summary

Problems solved by technology

The regeneration device in the existing design is large in size and has high requirements on the plant space, which requires modification of the existing and facility process design. Therefore, some nuclear facilities have not set up the drying bed on-line regeneration circuit due to process design or plant space problems, and the drying There may be residues of radioactive substances in the bed adsorbent, and there is a greater risk of radiation protection when replacing the adsorbent

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