Drying system in radioactive solid waste furnace and drying method

Abstract

The invention relates to a drying system in a radioactive solid waste furnace, meanwhile relates to a corresponding drying method, and belongs to the technical field of radioactive waste treatment. The system comprises a drying furnace and a condensate box; the drying furnace is provided with a main circulation loop and a flow dividing pipeline, wherein the top of the main circulation loop is connected to one side of the drying furnace through a heating draught fan and a heater which are in series connection, and the flow dividing pipeline is connected to the condensate box through a cooler, asteam and water separator and a metering device, a gas outlet of the steam and water separator is connected to the main circulation loop through a cooling draught fan to form an air returning pipeline, the cooling draught and the heating draught fan are each provided with a corresponding adjusting valve, and the condensate box and a gas outlet of the gas and water separator are connected with a vacuum pumping device to form a vacuum generation passage. Discharging of radioactive gas in the drying process can be effectively avoided, air utilization rate is improved, energy consumption is saved, and secondary pollutions can be obviously reduced.

Description

technical field [0001] The invention relates to a drying system, in particular to a drying system in a radioactive solid waste furnace, and also relates to a corresponding drying method, belonging to the technical field of radioactive waste treatment. Background technique [0002] The radioactive solid waste in-furnace drying system is used to place the radioactive solid in the nuclear power plant in the drying furnace, and use the circulating hot air heating method to dry the wet waste, reduce the moisture in the solid waste, and make it suitable for subsequent treatment requirements. [0003] The invention patent with the authorized announcement number CN 102708940 B discloses a nuclear power plant wet waste drying device. In the process of drying wet waste, the device needs to continuously supply air from the outside to the device, and at the same time discharge the air that may contain radioactive substances to the outside, which not only wastes energy, but also produce...

AI Technical Summary

Problems solved by technology

However, these technical solutions are either not aimed at the treatment of radioactive wet solid waste, or do not mention split cooling in the drying process, or need to use a stirrer to increase the evaporation rate during drying, which is not suitable for dry treatment of compressible wet solid waste. None of them properly solved the problem of efflux of air containing radioactive substances

Images