Adsorption-resistant multipurpose flow leaching equipment

Abstract

The invention discloses adsorption-resistant multipurpose flow leaching equipment. The equipment comprises a heating device, a soaking device, a stirring device, a flow speed control device and a soaking agent container, wherein the soaking device comprises a cylinder body, a cylinder cover, a material support and a supporting frame, the cylinder body is detachably connected with the cylinder cover, a water inlet and a water outlet are formed in the cylinder cover, and filtering devices are detachably connected into the water inlet and the water outlet; the cylinder body is placed in the heating device, and the supporting frame is arranged in the cylinder body and is in threaded connection with the inner wall of the cylinder body; a containing hole is formed in the middle of the supporting frame, and the material support is inserted into the containing hole; and a plurality of through holes are formed in the material support. According to the adsorption-resistant multipurpose flow leaching equipment, nuclide in radioactive solid waste can be leached, the lining and the material support which are made of polytetrafluoroethylene are adopted, the adsorption-resistant multipurpose flow leaching equipment has good adsorption resistance, flow leaching or static leaching can be achieved by controlling the flow speed control device, and the application range is enlarged.

Description

technical field [0001] The invention relates to the field of nuclear environment science and technology, in particular to an anti-adsorption multipurpose flow leaching device. Background technique [0002] Radioactive solid waste, especially high-level solid waste containing long-lived nuclides (such as 239Pu, 237Np, etc.), has the characteristics of high radioactive activity and high toxicity, and its hazards can last for tens of thousands of years or even longer. The environmental process can be divided into three steps: release, transfer and impact. In the presence of water, leaching is the basic mechanism for the release of nuclides from solid radioactive waste. Carrying out the study of nuclide leaching behavior is of great significance to understanding and mastering the release mechanism, law, release rate, total amount and migration of nuclide from pollutants in the environment. [0003] At present, leaching methods include static leaching method, flow leaching meth...

AI Technical Summary

Problems solved by technology

[0003] At present, leaching methods include static leaching method, flow leaching method and accelerated immersion method. Each method has different requirements for the leaching device used. However, there is no general leaching device on the market, and the existing test equipment has a narrow scope of application. Specific problems such as inaccurate control of experimental conditions and insufficient anti-adsorption performance of nuclides are difficult to meet the needs of scientific research

Images