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Waste resin regeneration treatment method

A treatment method and waste resin technology, applied in recycling technology, plastic recycling, etc., can solve the problems of waste resin not being processed in time, high processing and transportation costs, accumulation of APG waste resin, etc., and achieve resource recycling Utilization, stress relief, and cost-saving effects

Pending Publication Date: 2022-03-11
YANGJIANG NUCLEAR POWER +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are few units in China that have the qualifications to deal with waste resins, the treatment and transportation costs are extremely high, and the total amount of treatment is limited. The waste resins from nuclear power plants cannot be processed in time, resulting in a large accumulation of APG waste resins.

Method used

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Embodiment Construction

[0033] combine figure 1 , figure 2 , waste resin regeneration treatment method of the present invention is applicable to the regeneration treatment of nuclear power plant APG system waste resin, and this regeneration treatment method comprises the following steps:

[0034] S1. Feeding: send the waste resin into the regeneration bed.

[0035] For the feeding of waste resin, it is preferable to use a negative pressure feeder, which realizes feeding by sending compressed air to the feeding pipe to form a negative pressure. The feeding efficiency is high, and the waste resin can be prevented from being broken during the feeding process.

[0036] Resins usually have cationic resins and anionic resins, so waste resins are also divided into waste cationic resins and waste anion resins. Depending on the type of resin, the regeneration bed corresponds to either a cationic regeneration bed or an anion regeneration bed.

[0037] Due to the difference in resin expansion rate, the effe...

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Abstract

The invention discloses a waste resin regeneration treatment method. The method comprises the following steps: S1, feeding waste resin into a regeneration bed; s2, the regeneration bed is filled with secondary demineralized water, bubbling and ultrasonic treatment are conducted on the waste resin in the regeneration bed in turn, and impurities and elementary substance pollutants in the waste resin are removed; s3, water in the regeneration bed is completely discharged under the bubbling effect; s4, injecting the regeneration liquid into a regeneration bed, enabling the waste resin to be fully distributed on the regeneration bed through a bubbling effect, enabling the waste resin to be in full contact with the regeneration liquid for ion exchange regeneration, and then discharging the regeneration liquid; s5, the regeneration bed is filled with the second-stage demineralized water, the regeneration bed is filled with the regenerated resin through the bubbling effect, the regenerated resin is cleaned, and the second-stage demineralized water is discharged after cleaning is completed; and S6, carrying out dehydration treatment on the cleaned regenerated resin. The method is suitable for regeneration treatment of the waste resin of the APG system of the nuclear power plant, resource reutilization is achieved, and the problem that the waste resin is difficult to treat after cleaning and control releasing of the APG system of the nuclear power plant is solved.

Description

technical field [0001] The invention relates to the technical field of nuclear power waste treatment, in particular to a waste resin regeneration treatment method. Background technique [0002] The APG system is a nuclear power plant steam generator blowdown system, which consists of five parts: sewage collection, cooling, decompression, treatment, recovery or discharge, and is used to collect and treat steam generator sewage. The resin in the APG system is responsible for filtering and ion-exchanging the sewage. The performance of the resin will decline after a period of use, and it needs to be replaced when it drops to a certain level. During the normal operation of the unit, the generated APG waste resin does not have the condition of being radioactively polluted. According to the 2016 edition of the National Hazardous Waste List, waste ion exchange resins belong to HW13 hazardous waste, and their treatment and disposal should be managed as hazardous waste. [0003] At ...

Claims

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Application Information

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IPC IPC(8): C08J11/16C08L101/06C08L101/02
CPCC08J11/16C08J2300/104C08J2300/106Y02W30/62
Inventor 姚志猛邹晓炜刘资平朱剑锐李新贤詹鹏举陈建李春岗高军旗
Owner YANGJIANG NUCLEAR POWER
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