Radioactive organic waste liquid treatment process and system

Abstract

The invention provides a radioactive organic waste liquid treatment process and system. The process comprises the following steps: mixing radioactive organic waste liquid and additives according to acertain proportion and an addition sequence; quantitatively feeding the prepared solution into a pyrolyzing furnace, controlling the temperature of the pyrolyzing furnace in a preset range, performingpyrolysis and neutralization reactions on the prepared solution to generate pyrolytic ash and organic combustible waste gas; collecting and temporarily storing pyrolytic ash in an ash discharging hopper, periodically filling pyrolytic ash into a waste bin, delivering the waste bin into a processing facility, processing the pyrolytic ash; filtering organic combustible waste gas, then feeding organic combustible waste gas into a combustion furnace, combusting the organic combustible waste gas, after combustion, feeding high-temperature flue gas into a quench cooler, rapidly cooling the high temperature flue gas until the temperature of the flue gas is lower than a first preset temperature, making the flue gas go through a washing tower, wherein the temperature of the flue gas is reduced tobe lower than a second preset temperature after going through the washing tower, and finally discharging the flue gas through a tail gas draught fan. Radioactive substances in a radioactive organic waste liquid are fully separated, the inorganic rate of the treated organic waste liquid meets the requirement, and the environmental pollution and potential safety hazards can be effectively eliminated.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste liquid treatment, and in particular relates to a radioactive organic waste liquid treatment process and a radioactive organic waste liquid treatment system. Background technique [0002] With the continuous development of the nuclear energy industry, a large amount of spent fuel produced by nuclear power plants needs to be processed to recover resources such as unused uranium. In the process of recovering uranium resources in spent fuel, a large amount of radioactive organic waste liquid will be produced, the main components of which are tributyl phosphate (TBP) and kerosene. Exposure to radioactive pollution not only affects the growth of animals and plants, deteriorates water bodies, endangers human health, but also affects the normal operation of spent fuel processing. If direct combustion is adopted, phosphorus pentoxide will be produced during the combustion of tributyl phosphate, ...

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Problems solved by technology

[0003] In order to at least partially solve the technical problems of incomplete treatment of pollutants, easy corrosion of equipment and incomplete inorganicization of organic waste liquid in the prior art, the present invention has been completed

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