Nuclear power plant radioactive dry waste processing apparatus

Abstract

The invention discloses a nuclear power plant radioactive dry waste processing apparatus employing a vacuum pyrogenic decomposition method. The nuclear power plant radioactive dry waste processing apparatus is characterized by comprising a vacuum pyrogenic decomposition furnace. An air outlet of the vacuum pyrogenic decomposition furnance is orderly connected with a pre-filter, a U-shaped water tank and a high efficient filter; an outlet of the high efficient filter is connected with an absorption port of a hydraulic injector; one end of a water pump is connected with a water tank and the other end is connected with a water inlet of the hydraulic injector; and an injection port of the hydraulic injector is connected with the water tank. A low-temperature vacuum pryogenic decomposition method is employed and the method is reliable; the nuclear power plant radioactive dry waste processing apparatus is simple and easy to manufacture; less secondary waste is produced and harmful gases such as dioxin can be avoided; volume reduction effect is similar to burning; volume reduction effect of pure-cotton work clothes can reach 80 to 1, so volume of radioactive solid waste of a nuclear power plant can be obviously reduced and temporary storage pressure of a radioactive solid waste temporary warehouse of the nuclear power plant can be alleviated; ultimate processing cost of the radioactive solid waste can be greatly reduced; and the nuclear power plant radioactive dry waste processing apparatus has great economic benefits and environment friendliness.

Description

technical field [0001] The invention relates to a treatment device for radioactive dry waste of a nuclear power plant, in particular to a treatment device for radioactive dry waste of a nuclear power plant, in particular to a treatment device for radioactive dry waste of a nuclear power plant using a vacuum pyrolysis method. Background technique [0002] During the operation and maintenance of nuclear power plants, a large amount of compressible maintenance dry waste, including work clothes, work shoes, paper, clothes, plastics, rubber, etc., will be produced, with a volume of 125m 3 / unit·year or so. This kind of waste will be discarded after generation, but because of its radioactivity, a small part of it has a surface dose rate > 2mSv / h. In order to avoid the spread of radionuclides contained in the waste from endangering public and environmental safety, it needs to be reconditioned. According to national standards, the volume of solid radioactive waste from nuclear p...

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Problems solved by technology

Third, due to the limitations of physical compression, the method of compression and cement curing can only achieve the effect of neither increasing nor reducing volume.

Fourth, the method of compression and cement solidification has a large volume of final solid waste, and the cost of geological disposal is relatively high, which has a great impact on the environment.

Fifth, the inherent characteristics of the compression and cement curing method also determine the required process equipment is more, and the interface is complicated

However, the incineration process will produce toxic and harmful gases such as dioxin, which will have a certain impact on the environment. In addition, the operating temperature of the incinerator is high and the maintenance cost is high

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