A method for treating anion exchange resin by oxidation of molten carbonate salt and fully oxidized anion exchange resin

An exchange resin and oxidation treatment technology, which is applied in the field of carbonic acid molten salt oxidation treatment of anion exchange resin and fully oxidized anion exchange resin, can solve the problems of large area and large heat consumption of the product, reduce waste and improve the degradation rate. , Improve the effect of volume reduction ratio

Active Publication Date: 2021-05-28
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to propose a method for oxidation treatment of anion exchange resins with molten carbonate salts in order to solve the problems of large heat consumption, post-treatment of oxidized waste gas, and large footprint of processed products in the current method for treating waste resins, and A fully oxidized anion exchange resin was obtained

Method used

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  • A method for treating anion exchange resin by oxidation of molten carbonate salt and fully oxidized anion exchange resin
  • A method for treating anion exchange resin by oxidation of molten carbonate salt and fully oxidized anion exchange resin
  • A method for treating anion exchange resin by oxidation of molten carbonate salt and fully oxidized anion exchange resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Take Na 2 CO 3 +K 2 CO 3 is the oxidation system (Na 2 CO 3 :K 2 CO 3 =1:1), the ratio of anion exchange resin to system is 1:1, the mixing method is direct covering method, the oxidation time is 1h, and the final residual carbon content accounts for 14.49% of the original resin content.

Embodiment 2

[0056] Take Na 2 CO 3 +K 2 CO 3 is the oxidation system (Na 2 CO 3 :K 2 CO 3 =1:1), the ratio of anion exchange resin to system is 1:1, the mixing method is direct covering method, the oxidation time is 2h, and the final remaining carbon content accounts for 11.63% of the original resin content.

Embodiment 3

[0058] Take Na 2 CO 3 +K 2 CO 3 is the oxidation system (Na 2 CO 3 :K 2 CO 3 =1:1), the ratio of anion exchange resin to system is 1:1, the mixing method is direct covering method, the oxidation time is 3h, and the final residual carbon content accounts for 5.02% of the original resin content.

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Abstract

The invention proposes a method for oxidation treatment of anion exchange resin with molten carbonate salt, and obtains a fully oxidized anion exchange resin, belonging to the technical field of oxidation treatment of anion exchange resin. The carbonate system used in the present invention consists of Na 2 CO 3 -K 2 CO 3 Combined according to a certain ratio, under the condition of temperature of 800 ℃, the anion exchange resin is oxidized by molten salt in the oxidation furnace, and the residual carbon of molten salt oxidation is controlled by controlling the ratio of the resin to the system salt and the way of contact between the two. content. The invention has the advantages of reduced energy consumption, simple process, no harmful gas recovery device and reusable advantages.

Description

technical field [0001] The invention belongs to the technical field of oxidation treatment of anion exchange resins, and in particular relates to a method for oxidation treatment of anion exchange resins by molten carbonate salts and obtains a fully oxidized anion exchange resin. Background technique [0002] Anion exchange resins are widely used in the treatment of industrial wastewater and domestic wastewater, but their service life is limited, and a large amount of use means the generation of a large amount of resinous waste. Resin waste has been listed as the 13th category of hazardous waste in the National Hazardous Waste List. If it is not properly disposed of, it will easily cause harm to the environment. [0003] Resin waste is bulky, light in weight, and difficult to degrade in nature. If it is not treated effectively, it will take up a lot of land. In daily production and life, some individuals and enterprises choose to landfill it, but due to its non-degradable ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/16
CPCY02W30/62
Inventor 颜永得郑仰海薛云马福秋张密林王雪鹏李鹏许恒斌
Owner HARBIN ENG UNIV
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