High temperature gas-cooled reactor helium purification regeneration system and regeneration method

A high-temperature gas-cooled reactor and regeneration system technology, applied in the field of nuclear reactors, can solve the problems of frozen regeneration circuit, short running time and diffusion of helium purification system, and achieve efficient regeneration, high-efficiency operation, and high-efficiency desorption.

Active Publication Date: 2015-10-28
CHINERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing helium purification system and helium purification regeneration system have problems such as short running time of the helium purification system, freezing blockage at the low-te...

Method used

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  • High temperature gas-cooled reactor helium purification regeneration system and regeneration method

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Effect test

Embodiment 1

[0039] Example 1 A high temperature gas-cooled reactor helium purification regeneration system

[0040] A high temperature gas-cooled reactor helium purification regeneration system, such as figure 1 As shown, it includes a diaphragm compressor, an electric heater, a water / helium cooler 1, a gas / water separator, an auxiliary water adsorption bed, and a vacuum device with a discharge pipeline inside; wherein, the auxiliary water adsorption bed is also set up a bypass;

[0041] Through each device, the regeneration circuit of the copper oxide bed of the helium purification system, the regeneration circuit of the molecular sieve bed of the helium purification system, the regeneration circuit of the auxiliary water adsorption bed, and the regeneration circuit of the low-temperature activated carbon bed of the helium purification system can be formed;

[0042] Wherein, the regeneration circuit of the copper oxide bed is composed of a diaphragm compressor, an electric heater, a hel...

Embodiment 2

[0051] A high-temperature gas-cooled reactor helium purification regeneration system is similar to the regeneration system described in Embodiment 1, the only difference is that a water / helium cooler 2 can also be set at the water / helium cooler 1 and the gas / water separator. bypass.

[0052] After improvement, the copper oxide bed regeneration circuit is composed of diaphragm compressor, electric heater, copper oxide bed of helium purification system, and water / helium cooler 2 connected in sequence. When the copper oxide bed is regenerated, the regeneration circuit containing the water / helium cooler 2 can be used for regeneration, which can prevent the tritium-containing waste water in the water / helium cooler 1 and the gas / water separator from diffusing to the copper oxide bed regeneration circuit. When there is water in the copper oxide bed regeneration circuit, it can be removed by the auxiliary water adsorption bed.

[0053] After improvement, the low-temperature activated...

Embodiment 3

[0054] Example 3 A high temperature gas-cooled reactor helium purification system regeneration process

[0055] A regeneration method utilizing the helium purification regeneration system described in the above embodiment 2:

[0056] Under normal operating conditions of the high temperature gas-cooled reactor helium purification system, the working pressure of the helium purification system is 3-7MPa, the operating temperature of the copper oxide bed is about 250°C, the operating temperature of the molecular sieve bed is about 10°C, and the operating temperature of the low-temperature activated carbon bed is about - 196°C;

[0057] When a certain gas impurity component at the outlet of the copper oxide bed, molecular sieve bed and low-temperature activated carbon bed reaches the breakthrough point, the copper oxide bed, molecular sieve bed and low-temperature activated carbon bed of the helium purification system must be regenerated respectively;

[0058] Regeneration of the ...

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Abstract

The present invention relates to a high temperature gas-cooled reactor helium purification regeneration system and a regeneration method. The regeneration system comprises a diaphragm compressor, an electric heater, a water/helium cooler 1, a gas/water separator, an auxiliary water adsorption bed, and a vacuum device with a built-in discharge pipeline. A bypass is further disposed at the auxiliary water absorption bed. All the devices form: a regeneration loop of a copper oxide bed of a helium purification system, a regeneration loop of a molecular sieve bed of the helium purification system, a regeneration loop of an auxiliary water adsorption bed, and a regeneration loop of a low-temperature activated carbon bed of the helium purification system; and an oxygen injecting device is disposed on the regeneration hoop of the copper oxide bed. Through the four regeneration loops, high-efficient regeneration is achieved for the copper oxide bed, the molecular sieve bed, and the low-temperature activated carbon bed of the helium purification system; a problem of freeze-blockage in a cryogenic helium/helium heat exchanger of the helium purification system is solved; the runtime of the high temperature gas-cooled reactor helium purification system is prolonged; and high-efficient operation of the high temperature gas-cooled reactor helium purification system is ensured.

Description

technical field [0001] The invention relates to a high-temperature gas-cooled reactor helium purification regeneration system and regeneration method, belonging to the technical field of nuclear reactors. Background technique [0002] High-temperature gas-cooled reactors are advanced reactors with inherent safety features, using graphite as the moderator and helium as the coolant. During operation, a variety of chemical impurities and radioactive impurities will enter the primary loop helium coolant, such as carbon monoxide, hydrogen, carbon dioxide, water, oxygen, nitrogen, methane and generated by fuel ball fission and thermal neutron activation of reactor internals Gaseous tritium and radioactive impurities such as krypton and xenon. To prevent excessive corrosion of reactor graphite and reactor internals, the level of chemical and radioactive impurities in the primary loop helium coolant and the release of radioactive waste to the environment need to be controlled. A h...

Claims

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Application Information

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IPC IPC(8): G21F9/12
CPCG21F9/12
Inventor 常华吴宗鑫姚梅生陈晓明李富苏庆善何学东银华强董玉杰张作义
Owner CHINERGY CO LTD
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