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

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...

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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-temperature helium / helium heat exchanger of the helium purification system, and diffusion of tritium-containing wastewater to the copper oxide bed and low-temperature activated carbon bed regeneration loop. question

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