Estimation method of hydrogen generation rate in high-level radioactive waste liquid storage tank

A technology of high-level radioactive waste and high production rate, applied in complex mathematical operations, analytical materials, instruments, etc., to achieve important economic and social value

Active Publication Date: 2021-03-26
CHINA INST FOR RADIATION PROTECTION
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Problems solved by technology

[0006] This method is only an approximate estimate of the hydrogen production rate of the high-level liquid waste storage tank

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  • Estimation method of hydrogen generation rate in high-level radioactive waste liquid storage tank
  • Estimation method of hydrogen generation rate in high-level radioactive waste liquid storage tank
  • Estimation method of hydrogen generation rate in high-level radioactive waste liquid storage tank

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Embodiment Construction

[0044] The present invention will be described in detail below in conjunction with the examples.

[0045] The invention provides a method for estimating the hydrogen generation rate in a high-level waste liquid storage tank, which solves the problem of predicting the amount of hydrogen generated in a high-level waste liquid storage tank and controlling the accumulation of hydrogen in a large high-level waste liquid storage tank. The hydrogen explosion of the waste liquid storage tank plays a preventive role. The present invention uses a set of semi-empirical rate equations to simulate the hydrogen generation mechanism of thermochemical reactions, as well as the radiation decomposition and corrosion processes of water and organic components, and the three mechanisms of hydrogen generation in high-level waste liquid storage tanks (radiation Decomposition, pyrolysis, corrosion) for simulation calculation, the calculation formula is as follows:

[0046] HGR=HGR thm +HGR rad +HG...

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Abstract

The invention provides an estimation method of hydrogen generation rate in a high-level liquid waste storage tank. The method includes that volumes of hydrogen generated by three mechanisms of pyrolysis, radiolysis and corrosion in the high-level liquid waste storage tank are added together for calculation by simulating the hydrogen generation mechanism of thermochemical reaction and the radioactive decomposition and corrosion process of water and organic components. By the method, the problem of predicting hydrogen yield in the high-level liquid waste storage tank is solved, so that accumulation of hydrogen in a high-level liquid waste big tank and explosion of hydrogen in the high-level liquid waste storage tank are prevented. The estimation method is suitable for evaluating safety of anaftertreatment plant and providing technical support for emergency preparation and response of the aftertreatment plant and has important economic value and social value.

Description

technical field [0001] The invention belongs to the disposal technology of radioactive waste, and in particular relates to a method for estimating the hydrogen generation rate in a high-level radioactive waste liquid storage tank. Background technique [0002] In 1957, Kyshtym, South Ural, Soviet Union, had a serious accident of high-level waste liquid storage tank explosion. The consequences of the accident were second only to the explosion of Chernobyl nuclear power plant. After drying, it exploded at high temperature. After the accident was confirmed, it has aroused the attention of various countries to the safety of high-level waste liquid storage tanks. In particular, high-level waste liquid storage tanks will produce mixed gases such as hydrogen, nitrous oxide, nitrogen, and ammonia. explode. [0003] Therefore, when the reprocessing plant conducts safety assessment, emergency preparedness and response, it is necessary to estimate the hydrogen concentration in the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/18G06F17/18
CPCG01N7/18G06F17/18
Inventor 徐潇潇贾林胜冯宗洋张建岗杨亚鹏王宁王仁泽
Owner CHINA INST FOR RADIATION PROTECTION
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