A passive hydrogen-oxygen recombiner in a nuclear power plant and its gas treatment method
A compounder and passive technology, applied in chemical instruments and methods, chemical methods for reacting gas medium and gas medium, nuclear power generation, etc., can solve the problem of large outlet flow resistance, limited suction capacity, mutual disturbance of internal gases, etc. problems, to achieve the effect of enhancing suction capacity, preventing hydrogen explosion, and preventing mutual interference
Active Publication Date: 2021-01-19
中广核工程有限公司 +2
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Problems solved by technology
[0004] Aiming at the problems of the existing hydrogen-oxygen recombiner "chimney effect" of limited suction capacity, mutual disturbance of internal gases, and large outlet flow resistance, the present invention provides a passive hydrogen-oxygen recombiner in a nuclear power plant and its gas treatment method, which can timely Effective hydrogen-oxygen recombination to prevent hydrogen explosion and ensure the integrity of the containment
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[0033]In order to enable those skilled in the art to understand the present invention more clearly, the following will further describe the present invention in detail with reference to the accompanying drawings and specific embodiments.
[0034]Aiming at the problems of limited "chimney effect" suction capacity of existing hydrogen-oxygen recombiners, internal air passages easily disturbed each other, and large outlet flow resistance, the present invention aims to provide a nuclear power plant passive hydrogen-oxygen recombiner and its gas processing method , Its core idea is: the hydrogen-oxygen recombiner uses a flow guide component to divide the internal containing cavity of the housing assembly into a plurality of gas channels, and the cross section of each gas channel is gradually reduced from the inlet to the outlet, which can It greatly enhances the suction capacity of the "chimney effect"; at the same time, the diversion component can effectively prevent the mutual interferenc...
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The invention provides a nuclear power plant passive hydrogen-oxygen recombiner and a gas treatment method thereof. The hydrogen-oxygen recombiner comprises a shell assembly internally provided with acontaining cavity, a flow guide assembly installed in the containing cavity and a catalytic plate assembly installed at the bottom of the shell assembly. The flow guide assembly is used for dividingthe containing cavity into a plurality of gas channels extending from bottom to top, the bottoms and the tops of the gas channels are provided with gas inlets and gas outlets correspondingly, and thecross sectional areas of the gas channels are gradually reduced from the gas inlets to the gas outlets. The catalytic plate assembly is arranged close to the gas inlets and is used for catalyzing hydrogen-oxygen composite reaction of gas entering the gas channels. According to the hydrogen-oxygen recombiner and the gas treatment method thereof provided by the invention, mutual interference betweenascending gas flow can be effectively prevented, and the suction capacity of equipment is greatly enhanced, so that hydrogen-oxygen composite reaction can be effectively carried out in time, and hydrogen explosion is prevented.
Description
Technical field[0001]The invention relates to the technical field of nuclear power containment, in particular to a passive hydrogen-oxygen recombiner of a nuclear power plant and a gas processing method thereof.Background technique[0002]In the event of a design basis accident or a serious accident in a nuclear power plant, a large amount of hydrogen will be generated by the radiolysis of some zirconium-water reaction, core coolant and water, which will be released into the containment through the pressure boundary of the main circuit or the pressure vessel breach. When hydrogen and air in the containment are fully mixed, phenomena such as combustion, deflagration or explosion may occur. The resulting static and dynamic pressure loads will endanger the integrity of the containment and affect its safety system to effectively perform safety functions. In the mid-1980s, a new technology based on the catalytic oxidation of hydrogen and oxygen appeared. In the 1990s, the research of this ...
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IPC IPC(8): G21C9/06B01J12/00
CPCY02E30/30
Inventor 刘敏华刘翠波
Owner 中广核工程有限公司