Continuous medium-low radioactive waste volume reduction curing treatment system and method

Abstract

The invention provides a continuous medium-low radioactive waste volume reduction curing treatment system. The system is provided with a cleavage reaction still connected with a superheated vapor generation device. The cleavage reaction still is provided with a circulating heating device, and a gas inlet and a gas outlet of the circulating heating device are connected with the cleavage reaction still. The cleavage reaction still is further provided with a feeding opening, a discharging opening and a gas outlet. A screw feeder and a screw slag discharger are connected with the feeding opening and the discharging opening of the cleavage reaction still correspondingly. The gas outlet is connected with an exhaust pipeline, and a catalytic unit, a combustor, a combustion cavity, a gas purification device, a gas neutralization device and a negative-pressure gas pump are arranged on the exhaust pipeline. The invention further provides a continuous medium-low radioactive waste volume reduction curing treatment method. The maximum weight volume reduction rate of medium-low radioactive waste treated through the method can reach up to 98% or above, the size volume reduction rate of the medium-low radioactive waste treated through the method can reach up to 99% or above, and therefore volume reduction treatment on the radioactive waste is fundamentally achieved.

Description

technical field [0001] The invention belongs to the technical field of medium and low radioactive organic waste treatment, and in particular relates to a volume reduction and solidification treatment system and method for medium and low radioactive organic waste. Background technique [0002] In recent years, my country's nuclear power industry has developed rapidly, and the number of domestic nuclear power units currently in operation and under construction has increased rapidly, and China's nuclear power has begun to go global with Hualong One. With the rapid development of nuclear power, some environmental protection problems are becoming more and more serious, especially the problem of radioactive waste disposal. Due to the particularity of nuclear fuel, various radioactive wastes will inevitably be produced in the process of operation and decommissioning. Due to radioactive waste The waste itself poses a potential risk of radiation pollution to the staff of nuclear powe...

AI Technical Summary

Problems solved by technology

[0007] 3. 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.

[0008] 4. The method of compression and cement solidification has a large volume of final solid waste, high cost of geological disposal, and great impact on the environment

[0009] 5. The inherent characteristics of the compression and cement curing method also determine that the required process equipment is more and the interface is complicated

[0013] 2. Dioxin may be contained in the exhaust gas of the incinerator. The local environmental protection department has a conservative attitude towards the construction of the incinerator. It is difficult to obtain public support and approval, and the equipment and operating costs are relatively high.

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