Device for treating solid radioactive wastes

Abstract

The invention relates to a device for treating solid radioactive wastes, comprising a feeding device, a volume reducing device of the radioactive wastes, a tail gas and residual liquid treating device and a conveying device, wherein the feeding device is used for supplying the solid radioactive wastes; the tail gas and residual liquid treating device is used for treating tail gas and residual liquids formed after the radioactive wastes are treated by the volume reducing device; the conveying device is used for conveying processed substances after the radioactive wastes are treated by the volume reducing device; the feeding device, the tail gas and residual liquid treating device and the conveying device are respectively connected with the volume reducing device by virtue of pipelines; the feeding device, the volume reducing device of the radioactive wastes, the tail gas and residual liquid treating device and the conveying device are wholly in a vacuum environment. By utilizing the movable device for treating the solid radioactive wastes provided by the invention, the environmental pollution is less, the treating process is safe and reliable, the storage space can be reduced, and the national emission standard can be met.

Description

technical field [0001] The invention belongs to the field of radioactive waste treatment, and relates to a treatment device for various radioactive wastes, in particular to absorbent paper, wet rags, plastic cloth, cotton products, waste wood and technological processes produced in nuclear industry and nuclear power plant nuclear reactor processes A variety of solid radioactive waste treatment devices such as waste resins generated in the Background technique [0002] As an efficient and clean energy, nuclear power has been increasingly valued and utilized by people. As of 2010, there were 13 nuclear power units in operation in mainland my country, and 24 units under construction will also be put into commercial operation successively. While nuclear power brings huge economic benefits to people, the technological waste and technical waste produced in the working process have certain radioactivity. For example, in addition to producing technological waste concentrate, sludge ...

AI Technical Summary

Problems solved by technology

For the cement solidification method, radioactive waste is directly compressed and sealed with cement, which faces various challenges due to its large capacity expansion ratio, high storage cost, and large storage space.

For the incineration and filtration method, after incineration and filtration of radioactive waste, although the storage space can be alleviated to a large extent, and the storage cost will be reduced accordingly, but the pollution of the environment due to the dioxin produced by the incineration cannot be underestimated. At the same time, the current incineration method has a very large structure. In addition to the high investment intensity, its fixed structure has brought the disadvantages that the radioactive waste contained in each power station must be transferred to the volume reduction treatment center for treatment, which virtually increases the number of radioactive wastes. Due to the limitation of the heating method, the nuclides in the radioactive waste form aerosols and drift with the hot air flow during incineration, which not only increases the difficulty of tail gas treatment, but also increases the investment and pressure of treatment, which may further lead to secondary pollution. one or more pollution

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