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Radioactive waste resin wet oxidation device

A technology of radioactive waste resin and wet oxidation, applied in radioactive purification, feeding device, incinerator, etc., can solve the problems of waste compatibilization and insufficient long-term stability of solidified body, so as to prevent radioactive leakage and ensure clean discharge. Effect

Pending Publication Date: 2022-03-25
CHINA INST FOR RADIATION PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The waste resin produced by domestic nuclear facilities is mostly processed by traditional cement solidification process, which has technical bottlenecks of waste volume expansion and insufficient long-term stability of the solidified body

Method used

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  • Radioactive waste resin wet oxidation device

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Embodiment Construction

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be further clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of the embodiments.

[0029] Such as figure 1 As shown, a radioactive waste resin wet oxidation device provided by an embodiment of the present invention includes a feed unit, an oxidative degradation unit, and a tail gas treatment unit; wherein,

[0030] (1) Feeding unit

[0031] The feeding unit includes a feeding mechanism and equipment for feeding materials such as waste resin, catalyst, inhibitor and oxidant into the reactor 2 .

[0032] In this embodiment, the waste resin and the catalyst solution are weighed and mixed in proportion ...

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Abstract

The invention relates to a radioactive waste resin wet oxidation device. According to the radioactive waste resin wet oxidation device provided by the invention, an oxidizing agent is added into the reaction kettle in a constant flow pumping continuous feeding manner, so that waste resin is subjected to oxidative degradation in a sealed negative pressure system under certain temperature and stirring conditions, and radioactive leakage is prevented; meanwhile, tail gas generated in the reaction process is led out of the reaction kettle through a vacuum pump, gas-water separation is conducted after the tail gas is cooled through a condenser, condensate flows back to the reaction kettle or is collected in a liquid collecting bottle, and after non-condensable gas is metered, the non-condensable gas flows through a first-stage gas washing bottle to remove trace radionuclide and inorganic acid gas carried by the non-condensable gas; harmful gas in the non-condensable gas is thoroughly oxidized and removed through the catalytic decomposition furnace, and finally the non-condensable gas is safely discharged after passing through the second-stage gas washing bottle. The two-stage gas washing device, catalytic oxidation and other tail gas treatment processes are adopted for a very small amount of nuclides possibly carried in the tail gas, the nuclides carried in the tail gas are recycled to the maximum extent, and clean emission of the tail gas is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste treatment, and in particular relates to a radioactive waste resin wet oxidation device. Background technique [0002] The safe disposal of radioactive waste resin containing organic matter is still one of the difficulties and hot spots in domestic radioactive waste management. The waste resin produced by domestic nuclear facilities is mostly processed by traditional cement solidification process, which has technical bottlenecks of waste volume expansion and insufficient long-term stability of the solidified body. [0003] At present, research on the inorganic volume reduction treatment technology of radioactive waste resin is being carried out in China, including wet oxidation, supercritical water oxidation, steam reforming, etc. Wet oxidation of waste resin can be carried out at low temperature (less than 100°C), waste resin is oxidized by oxidant H 2 o 2 Fully oxidized to H 2 O.CO ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/30B01J4/02B01J19/18G21F9/02B01D53/00B01D53/40B01D53/75B01D53/78F23G7/07
CPCG21F9/30B01J4/02B01J19/18G21F9/02B01D53/002B01D53/40B01D53/75B01D53/78F23G7/07
Inventor 郭喜良闫晓俊柳兆峰冯文东安鸿翔高超薛海龙刘建琴张丽秦翔高凯
Owner CHINA INST FOR RADIATION PROTECTION
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