Capacity reduction treatment system and method for medium-low radioactive solid waste

Abstract

The invention discloses a capacity reduction treatment system and method for medium-low radioactive solid waste. The system comprises a crusher, a sorting box, a plasma gasifier, a plasma fusion furnace, a burning chamber, a quench tower, a ceramic filter, an activated carbon adsorption tower, a deacidification washing tower, an efficient air filter, a chimney, a fused vitreous body receiver and aconveyor. Firstly, the medium-low radioactive solid waste is crushed by using a crushing device and then conveyed to the sorting device for sorting, the combustible waste is conveyed into the gasifier, organic components are subjected to a gasification reaction, and generated ash and noncombustible waste are collected and conveyed into the fusion furnace for vitreous fusion treatment, so that radioactive nuclide is fixed into the fused vitreous body; the vitreous body is cooled, barreled and stored by an automatic receiving system, and generated smoke is purified and then reaches the comprehensive emission standard of atmospheric pollutants, so that up-to-standard emission is achieved. The capacity reduction treatment system has a good capacity reduction effect and is high in safety reliability and nuclide stability.

Description

technical field [0001] The invention relates to a waste volume reduction treatment system and a method thereof, in particular to a medium and low radioactive solid waste volume reduction treatment system and a method thereof. Background technique [0002] my country's current nuclear power installed capacity has reached 36.8 million kilowatts, and the accumulated low- and medium-level radioactive waste generated is about 13,000 cubic meters. The existing conventional disposal method for low-level and medium-level solid waste is cement solidification after super compaction, and the volume-reduced waste is stored in 200L steel drums. However, cement solidification is a volume-enhancing treatment process. Although the super compressor further compresses and reduces the volume of waste, the effect of volume reduction is limited, and it cannot fundamentally solve the problem of nuclide leaching and diffusion in waste. Although the incineration method for treating low-level and m...

AI Technical Summary

Problems solved by technology

However, cement solidification is a volume-enhancing treatment process. Although the super compressor can further compress and reduce the volume of waste, the effect of volume reduction is limited, and it cannot fundamentally solve the problem of nuclide leaching and diffusion in waste.

Although the incineration method has a significant volume reduction effect on combustible waste, the problem of dioxin pollution generated during the incineration process has always been the focus of attention

Moreover, due to the large amount of flue gas produced by incineration, it not only increases the burden and cost of tail gas treatment, but also easily causes the further diffusion of radionuclides with the flue gas, which is not conducive to the capture and control of radionuclides.

In addition, the ash produced by the incineration method cannot be melted, and cannot capture and solidify radionuclides and other heavy metals that seriously pollute the environment.

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