Preparation method for platinum membrane catalytic plate based on passive hydrogen and oxygen recombiner

Abstract

The invention discloses a preparation method for a platinum membrane catalytic plate based on a passive hydrogen and oxygen recombiner, and solves the problems that a preparation process of a recombiner catalytic plate is complex and high in cost, and has security risks. The preparation method for the catalytic plate comprises the following steps of (1) at a room temperature, placing porous stainless steel filters in an ultrasonic cleaning tank with a dilute hydrochloric acid solution to carry out ultrasonic cleaning; (2) taking the porous stainless steel filter out and placing the porous stainless steel filter in a chloroplatinic acid solution for ultrasonic immersion; (3) taking the porous stainless steel filter out and placing the porous stainless steel filter in ultrapure water to carry out ultrasonic cleaning; and (4) taking the porous stainless steel filter out and drying the porous stainless steel filter. The preparation method is simple in process flow, convenient for operation, small in usage amount of raw materials, high in utilization rate of the raw materials, short in preparation period and high in security. The preparation method is very suitable for large-scale production of the recombiner catalytic plate; and the prepared catalytic plate has high dehydrogen efficiency, short start-up time and good dehydrogen performance, so that the preparation method has quite high practical value and promotional value.

Description

technical field [0001] The invention relates to a preparation method, in particular to a preparation method of a platinum membrane catalytic plate based on a passive hydrogen-oxygen recombiner. Background technique [0002] The safety performance of nuclear power plants is the focus of nuclear power construction. At present, in order to avoid or reduce the risk of hydrogen explosion in the containment of nuclear power plants, the existing second-generation and third-generation nuclear power plants are equipped with corresponding measures as precautions. One of the important measures is Dozens of passive hydrogen-oxygen recombiners (PAR) are distributed in the containment vessel, which can automatically start without external energy in the case of design basis accidents and severe accidents, and reduce the hydrogen concentration to below the safe level. In general, a PAR can be described as a bottom-loaded catalyst vertical channel (commonly known as a "chimney"). After the ...

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Problems solved by technology

[0017] The purpose of the present invention is to provide a method for preparing a platinum film catalytic plate based on a passive hydrogen-oxygen recombiner, which mainly solves the problems of complex preparation process, high cost and potential safety hazards of the recombiner catalytic plate

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