Nuclear power plant passive hydrogen-oxygen recombiner and gas treatment method thereof
A recombiner and passive technology, applied in chemical instruments and methods, chemical methods for reacting gas medium with gas medium, nuclear power generation, etc., can solve limited suction capacity, mutual disturbance of internal gas, and large outlet flow resistance, etc. problem, to achieve the effect of enhancing the suction capacity, preventing mutual interference, and preventing hydrogen explosion
Active Publication Date: 2019-06-14
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 present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] Aiming at the problems of the existing hydrogen-oxygen recombiner "chimney effect" limited suction capacity, easy mutual disturbance of internal air passages, large outlet flow resistance, etc., the present invention aims to provide a passive hydrogen-oxygen recombiner and its gas treatment method in a nuclear power plant , the core idea is: the hydrogen-oxygen recombiner uses a flow guide component to divide the inner cavity of the shell component into multiple gas channels, and the cross-section of each gas channel gradually shrinks from the air inlet to the exhaust port, which can The suction capacity of the "chimney effect" is greatly enhanced; at the same time, the guide assembly can effectively prevent the mutual interference betw...
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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 treatment method thereof. Background technique [0002] When a design basis accident or severe accident occurs in a nuclear power plant, some such as zirconium water reaction, core coolant and water radiolysis will produce a large amount of hydrogen, which will be released into the containment vessel through the pressure boundary of the main circuit or the breach of the pressure vessel. When the hydrogen and air in the containment are fully mixed, combustion, deflagration or explosion may occur, and the resulting static and dynamic pressure loads will endanger the integrity of the containment and affect the effective execution of safety functions of its safety system. In the mid-1980s, a new technology based on the catalytic oxidation of hydrogen and oxygen appeared. In the 1990s, the resear...
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Login to View More 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