Nuclear power station radioactive waste gas treatment system

Abstract

The invention discloses a nuclear power station radioactive waste gas treatment system. The nuclear power station radioactive waste gas treatment system comprises a gas cooler, a gas-water separator, a compressor, a delay treatment unit and a radioactive monitoring and control device, wherein the gas cooler is connected with an upstream system pipeline through a gas inlet pipeline, the gas-water separator, the compressor, the delay treatment unit and the radioactive monitoring and control device are sequentially and serially connected to the downstream of the gas cooler through a pipeline. The compressor is arranged in front of the delay treatment unit, so that the running pressure of the system is effectively increased, the adsorption coefficient of the adsorbent on the gas can be greatly increased, the delay attenuation time of the radioactive gas can be prolonged, the radioactive waste gas treatment capacity of the system can be multiplied, the radioactive waste gas treatment efficiency is improved, the application range of the system is enlarged, the treatment effect of the system is improved, and the popularization and application prospect is promising.

Description

technical field [0001] The invention belongs to the field of nuclear power plant waste gas treatment, and more specifically, the invention relates to a radioactive waste gas treatment system. Background technique [0002] During normal operation and maintenance of nuclear power plants, nuclear power plants produce radioactive exhaust gases. According to the source and composition of waste gas, radioactive waste gas from nuclear power plants can be divided into two categories: oxygen-containing waste gas and hydrogen-containing waste gas. Among them, the oxygen-containing waste gas comes from the exhaust of various radioactive liquid temporary storage tanks, mainly containing oxygen, nitrogen, a small amount of iodine and aerosol particles. The radioactive level of this part of the waste gas is relatively low, and it is generally passed through the ventilation system of the auxiliary plant of the nuclear island. It can be discharged after treatment; while the hydrogen-contai...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a nuclear power plant radioactive waste gas treatment system with stronger availability and better treatment effect in view of the disadvantages of the conventional activated carbon delayed treatment process, such as the small adsorption coefficient of the adsorbent and the low waste gas treatment flow rate.

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