Device and method for evaluating activity of hydrophobic catalyst through hydrogen isotope gas phase exchange

Abstract

The invention provides a device and a method for evaluating activity of a hydrophobic catalyst through hydrogen isotope gas phase exchange. The device comprises a gas control unit, a water saturationunit, a catalytic reaction system, a sample collection unit and a temperature control system, wherein the water saturation unit comprises a primary water saturator and a secondary water saturator; thecatalytic reaction system comprises a reaction pipe; the sample collection unit comprises a condensation pipe for carrying out condensed collection on water samples containing deuterium and a cold trap for carrying out liquid nitrogen cooling and collection on the water samples containing the deuterium; the temperature control system consists of four independent temperature control units which are respectively used for controlling temperatures of the primary water saturator, the secondary water saturator, the reaction pipe and the condensation pipe. According to the device and the method disclosed by the invention, the hydrogen gas passes through the saturated deuterium-containing water, and performs gaseous hydrogen isotope exchange reaction on the catalyst bed, the deuterium-containingwater is collected by adopting backflow condensation and / or cold trapping, so that the content of the deuterium in the water before exchange is quantitatively analyzed through an infrared method, andthe catalytic performance of the catalyst is evaluated. The device and the method have the advantages that an operation is simple, and the device and the method are suitable for evaluating the performance of the catalyst in the experiment and research stage.

Description

technical field [0001] The invention relates to a waste water treatment device, in particular to a hydrogen isotope gas phase exchange hydrophobic catalyst activity evaluation laboratory device. Background technique [0002] With the rapid development of the nuclear industry, nuclear energy will play an increasingly important role in my country's energy sector. The establishment of various nuclear reactors and nuclear chemical fuel reprocessing devices will produce a large amount of tritiated heavy water every year, prompting people's awareness to the importance of efficient sewage treatment measures in environmental protection. Although my country's national standard "Basic Standards for Ionizing Radiation Protection and Radiation Source Safety" includes tritium as a low-toxic radionuclide, it does not mean that the hazards of tritium can be ignored. my country's GB6249-2011 stipulates that the total beta radioactivity in the receiving water body (excluding tritium and carb...

AI Technical Summary

Problems solved by technology

The methods reported in the above technical proposals are practical devices for tritium separation and recovery or methods for monitoring tritium concentration, which are suitable for gas-liquid exchange systems for electrolytic hydrogen production, and catalysts that can be evaluated for gas-liquid exchange reactions on the surface of catalysts and fillers Performance, unable to independently examine the catalytic performance of the catalyst itself

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