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Method and device for absorbing and precipitating radionuclide in containment of nuclear power plant

A nuclear power plant containment, radionuclide technology, applied in the direction of radioactive purification, nuclear engineering, etc., can solve problems such as atmospheric environmental pollution, and achieve the effect of reducing concentration, solution toxicity and corrosiveness

Active Publication Date: 2012-02-08
HENGYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no methods and devices for absorbing and precipitating radionuclides in the containment of nuclear power plants. When the containment is depressurized, exhausted or ruptured, the radionuclides in high-concentration radioactive water are directly discharged into the atmosphere, causing serious damage to the atmosphere. Pollution

Method used

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  • Method and device for absorbing and precipitating radionuclide in containment of nuclear power plant
  • Method and device for absorbing and precipitating radionuclide in containment of nuclear power plant
  • Method and device for absorbing and precipitating radionuclide in containment of nuclear power plant

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Embodiment 1

[0022] Embodiment 1. A method for adsorbing and precipitating radionuclides in the containment of a nuclear power plant. First, a device for adsorbing and precipitating radionuclides is preset in the containment 15 of a nuclear power plant. The device includes a pit that is preset in the containment 15 19 is equipped with an adsorption box 7 of high-temperature-resistant inorganic adsorption material, and a first water tank 13 and a second water tank 2 that are preset in the containment vessel 15 and contain solutions of different formulations. Under the extreme accident conditions of a nuclear power plant, after the primary circuit in the containment 15 of the nuclear power plant ruptures, a large amount of high-temperature, high-pressure, high-concentration radioactive water will be released into the containment 15, the water level in the pit 19 will rise, and the adsorption material in the adsorption box 7 will absorb Radioactive nuclides in high-concentration radioactive wa...

Embodiment 2

[0035] Embodiment 2: A method for adsorbing and precipitating radionuclides in the containment of a nuclear power plant. First, a device for adsorbing and precipitating radionuclides is preset inside and outside the containment 15 of a nuclear power plant. 15 The pit 19 is equipped with an adsorption box 7 of high-temperature-resistant inorganic adsorption material, and a first water tank 13 and a second water tank 2 with solutions of different formulas are preset outside the containment vessel 15 . Under the extreme accident conditions of a nuclear power plant, after the primary circuit in the containment 15 of the nuclear power plant ruptures, a large amount of high-temperature, high-pressure, high-concentration radioactive water will be released into the containment 15, the water level in the pit 19 will rise, and the adsorption material in the adsorption box 7 will absorb Radionuclides in high-concentration radioactive water; the first water tank 13 and the second water tan...

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Abstract

The invention discloses a method and device for absorbing and precipitating radionuclide in a containment of a nuclear power plant. The device for absorbing and precipitating radionuclide is mounted in the containment of the nuclear power plant in advance, and the device includes an absorption box containing high temperature resistant inorganic absorption material and two water tanks containing different formula solutions. In case that the nuclear power plant is in extreme events, a loop in the containment of the nuclear power plant is broken, and a great deal of high-temperature and high-pressure radioactive water with high concentration is to be released into the containment, the absorption material in the absorption box is serviced to absorb the radionuclide in the radioactive water; the solutions in two water tanks are automatically controlled or manually controlled to be emptied into the containment in sequence; two solutions are reacted with the radionuclide in the radioactive water with high concentration to generate precipitation; 131 I, 137 Cs and 90 Sr in the radioactive water with high concentration are absorbed and precipitated in the containment, as a result, the concentration of radioactive substances in the water in the containment is reduced; and the quantity of the radionuclide released to the atmospheric environment is reduced during releasing the pressure ofthe containment to exhaust gas or when the containment is broken.

Description

technical field [0001] The invention relates to a method and device for absorbing and precipitating radionuclide in the containment of a nuclear power plant, in particular to a method and device for absorbing and precipitating radionuclide in high-concentration radioactive water after the primary circuit in the containment of a nuclear power plant is broken . Background technique [0002] Under the extreme accident conditions of nuclear power plants, after the primary circuit in the containment of nuclear power plants ruptures, a large amount of high-temperature, high-pressure and high-concentration radioactive water will be released into the containment. yes 131 I, while those with larger emissions and longer half-lives are 137 Cs and 90 Sr. For high concentrations of radioactive water 131 I. 137 Cs and 90 Adsorption and precipitation of Sr can reduce the concentration of radioactive substances in the containment water. When the containment is decompressed and vented...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/12
Inventor 谭延亮
Owner HENGYANG NORMAL UNIV
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