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Plasma volume reducing system and method for processing nuclear facility solid waste

A plasma and solid waste technology, applied in nuclear engineering, radioactive purification, etc., can solve the problem that the order of arrangement cannot meet the requirements of environmental protection for discharge, and achieve the effect of high safety and high volume reduction ratio

Inactive Publication Date: 2015-05-20
CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sequence of the arrangement of the tail gas post-processing equipment cannot meet the environmental protection requirements for the discharge of waste from nuclear facilities to the outside world.

Method used

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  • Plasma volume reducing system and method for processing nuclear facility solid waste
  • Plasma volume reducing system and method for processing nuclear facility solid waste
  • Plasma volume reducing system and method for processing nuclear facility solid waste

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Experimental program
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Embodiment 1

[0099] please refer again Figure 5 As shown, corresponding to Embodiment 1 of the present invention, Embodiment 2 of the present invention provides a plasma volume reduction method for treating nuclear facility solid waste, including:

[0100] Step S1, using plasma to pyrolyze and melt the sorted and pulverized nuclear solid waste;

[0101] Step S2, fully burning the pyrolyzed product to generate flue gas to be treated;

[0102] Step S3, using the sprayed lye to cool the flue gas to be treated and neutralize the acid gas therein according to the semi-dry quenching method;

[0103] Step S4, using the cloth bag method to capture dust, coke and radionuclides in the flue gas treated in step S3;

[0104] Step S5, using a wet method to scrub the flue gas treated in step S4 to remove acid gas and radionuclides therein;

[0105] Step S6, using a selective catalytic reduction method to remove nitrogen oxides in the flue gas treated in step S5.

[0106] Specifically, before step S1...

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PUM

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Abstract

The invention provides a plasma volume reducing system and method for processing nuclear facility solid waste. The plasma volume reducing system comprises a fusion burning system and a tail gas processing system. The fusion burning system further comprises a fusion furnace and a secondary burning chamber. Low-and-intermediate level radioactive solid waste is processed through a combination mode of plasma pyrolysis fusion and secondary combustion. Tail gas generated by secondary combustion is processed in a combination mode of a half-drying-quick-cooling method, a cloth bag, a wet method and denitration. Various kinds of waste can be processed, the size of the waste is lowered to 1 / 6, radionuclide can be stably solidified in a solidifying body, and exhaust gas emission can reach the national standard. Comprehensively, the high volume reduction ratio and the high safety in the volume reduction technology can be achieved.

Description

technical field [0001] The invention relates to the field of nuclear waste treatment, in particular to a plasma volume reduction system and method for treating nuclear facility solid waste. Background technique [0002] During the operation and maintenance of nuclear facilities, a large amount of low- and medium-level radioactive solid waste will be generated, such as waste filters, waste asbestos cloth, concentrate, sludge, waste resin, etc. The current treatment methods are usually: classification, compression (super compression), cement curing and concrete fixing. These methods are widely used by domestic nuclear power plants due to their mature technology, but the treatment process is complicated, the treatment speed is slow, the waste containment rate is low, and the compressed waste nuclide leaching rate is high. [0003] With the development of nuclear power in my country, the problem of low and intermediate level solid waste disposal in nuclear power plants will bec...

Claims

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Application Information

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IPC IPC(8): G21F9/30G21F9/32
CPCG21F9/308G21F9/32
Inventor 吕永红陆杰刘夏杰李晴黄文有林鹏陈明周周东升王腾蛟周江刘峰白冰周建明
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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