A method and device for drying radioactive waste ion exchange resin in a microwave barrel

A technology of ion exchange resin and radioactive waste, which is applied in the direction of heating devices, drying solid materials, heating to dry solid materials, etc., can solve the problems of waste ion exchange resin denaturation, block heat conduction, etc., to prevent secondary pollution and harm personnel Potential to inflict damage, strong penetrating power, and short processing time effects

CN103808110BActive Publication Date: 2016-06-08CHINA INST FOR RADIATION PROTECTION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-06-08

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Abstract

The invention relates to a method for drying radioactive waste ion exchange resin using microwaves in a barrel. The method comprises the steps that (1) the radioactive waste ion exchange resin is drained; (2) the drained radioactive waste ion exchange resin is conveyed to the stainless steel barrel; (3) the radioactive waste ion exchange resin contained in the stainless steel barrel is subjected to drying treatment by utilizing the microwaves, and in addition, the temperature is monitored; (4) after the stainless steel barrel reaches the preset filling rate, the drying stops, and the sealed storage treatment is carried out. The invention also provides a drying device for realizing the method. The method and the drying device have the advantages that a microwave pressurized water evaporation technology is adopted, the drying process can be enabled to be fast and stably carried out, the heating uniformity and the invariance of the resin are ensured, and in addition, the shifting out of radioactive nuclides along with moisture boiling can be reduced to the greatest degree; the drying device can realize the continuous feeding and the automatic control, the drying process is carried out in the stainless steel barrel in a drying cabin, and the possibility of injury on personnel and pollution on equipment and environment caused by the radioactive nuclides can be reduced.
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Description

technical field

[0001] The invention belongs to the technical field of radioactive waste treatment, and in particular relates to a drying method and a drying device in a microwave barrel of radioactive waste ion exchange resin. Background technique

[0002] With the development of social economy, the demand for power resources is increasing, and nuclear power, as an efficient and clean energy source, has been paid more and more attention by people. However, while bringing huge economic benefits to people, the problem of disposal of waste ion exchange resins generated during the operation of nuclear power plants is becoming more and more serious. It has a certain specific activity of radioactivity. If it is not handled properly, it will easily cause serious harm to the public and the environment when it suffers from natural disasters such as earthquakes, tsunamis, or terrorist attacks, and may even cause social unrest. Therefore, effective treatment of radioactive waste ion ...

Examples

Embodiment Construction

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like figure 1 As shown, a method for drying radioactive waste ion exchange resin in a microwave barrel provided by the present invention includes the following steps:

[0031] (I) Draining the radioactive waste ion exchange resin.

[0032] During the specific operation, the radioactive waste ion exchange resin temporarily stored at the user site is usually transported to a stainless steel barrel (usually a 200L standard stainless steel barrel is used, and the stainless steel barrels described in the examples all refer to a 200L standard stainless steel barrel); The radioactive waste ion exchange resin at the user's site is usually transported from the resin storage tank into the drainage metering device by means of hydraulic transportation, and then the water is drained by air pressure.

[0033] (II) Transfer the drained radioactive wast...