Nuclear power station radioactive waste gas treatment system

A technology for waste gas treatment and radioactivity, used in radioactive purification, nuclear engineering, etc., can solve the problems of low waste gas treatment flow and small adsorption coefficient, and achieve the effect of improving the adsorption coefficient, increasing the operating pressure, and prolonging the retention decay time.

Active Publication Date: 2014-11-12
中广核工程有限公司 +2
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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 o

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  • Nuclear power station radioactive waste gas treatment system

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[0023] In order to make the purpose of the invention, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0024] see figure 1 , The nuclear power plant radioactive waste gas treatment system of the present invention includes a first gas buffer tank 1, a gas cooler 2, a gas-water separator 4, a second gas buffer tank 5, a compressor 6, a pre-protected bed 7, an adsorption bed 8, and a radioactivity monitoring A control device 9 , a power plant chimney 10 and a gas concentration analysis package 11 . Among them, the gas cooler 2 adopts a water-cooled or air-cooled heat exchanger; the adsorbent of the gas-water separator 4 ad...

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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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Application Information

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IPC IPC(8): G21F9/02
Inventor 于世昆白婴刘昱姚兵
Owner 中广核工程有限公司
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