Ultrahigh-pressure supercritical carbon dioxide current-carrying dry ice cutting device and method

A carbon dioxide and cutting device technology, applied in the field of decommissioning of nuclear facilities, can solve the problems of increased secondary waste, low cutting efficiency, and increased decommissioning funds, achieving significant economic and social benefits, reducing the amount of secondary waste, The effect of saving disposal costs
CN109986318APending Publication Date: 2019-07-09NUCLEAR POWER INSTITUTE OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NUCLEAR POWER INSTITUTE OF CHINA
Publication Date
2019-07-09

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Abstract

The invention belongs to the technical field of nuclear facility decommission and particularly relates to an ultrahigh-pressure supercritical carbon dioxide current-carrying dry ice cutting method. The method comprises the following steps that 1, supercritical carbon dioxide is prepared; 2, ultrahigh-pressure supercritical carbon dioxide current-carrying dry ice is sprayed; and 3, carbon dioxide is recycled. According to the method, cutting and disintegrating of metal rubbish on the nuclear facility decommission site can be achieved, the cutting efficiency is improved, the treatment amount ofsecondary radioactive waste is reduced, and safety of personnel, the public and environment is ensured.
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Description

technical field

[0001] The invention belongs to the technical field of decommissioning of nuclear facilities, and in particular relates to a device and method for cutting ultrahigh-pressure supercritical carbon dioxide flow-borne dry ice. Background technique

[0002] During the on-site implementation of decommissioning of nuclear facilities, whether it is the dismantling of equipment or the disintegration of dismantled items, radioactive cutting operations are involved. For example, in the decommissioning process of nuclear power plants, the cutting and dismantling of reactor pressure vessels, the cutting and dismantling of the main pipeline of the primary circuit system, etc. At present, the commonly used cutting methods are mainly divided into cold cutting and hot cutting. Among them, cold cutting technology mainly includes diamond wire saw, circular saw, high-pressure water jet cutting, etc.; thermal cutting technology mainly includes underwater plasma cutting, oxyacety...

Claims

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