Novel filter material and preparation process thereof

By setting up a drive and adjustment structure inside the sulfonation tank and changing the position and tilt angle of the stirring blades, the problem of styrene-divinylbenzene copolymer balls floating and accumulating during the sulfonation process was solved, resulting in a higher yield.

CN122352175APending Publication Date: 2026-07-10GUANGZHOU LINGCHAO TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU LINGCHAO TECHNOLOGY CO LTD
Filing Date
2026-05-11
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In the existing technology, styrene-divinylbenzene copolymer balls tend to float on the surface of concentrated sulfuric acid during sulfonation and are difficult to wet, or sink to the bottom of the sulfonation tank and accumulate, causing heat buildup and coking, which affects the yield.

Method used

By setting up a driving structure and an adjusting structure, the stirring blades are driven to change position and tilt angle according to different reaction stages, ensuring that the styrene-divinylbenzene copolymer balls are evenly distributed in the sulfonation tank, avoiding them from floating on the surface or piling up at the bottom.

Benefits of technology

This improved the wetting effect of styrene-divinylbenzene copolymer spheres, prevented heat accumulation and charring, and increased the yield of strong acid cation exchange resins.

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Abstract

This invention relates to the field of filter material production technology, specifically to a novel filter material and its preparation process, comprising the following steps: drying and swelling styrene-divinylbenzene copolymer spheres, then adding them to a sulfonation tank; adding concentrated sulfuric acid to the sulfonation tank, starting a first motor to drive a stirring blade for stirring, and heating to carry out the sulfonation reaction; initially, the stirring blade rotates counterclockwise; at the end of the reaction, a second motor is started to drive a lead screw to rotate, causing the moving parts and stirring blades to move to the bottom of the rotating shaft, while simultaneously the gear rotates under the action of the gear plate, causing the stirring blades to rotate 180°, and then rotate clockwise; after sulfonation, a strongly acidic cation exchange resin is obtained. This invention, by setting a driving structure to change the position of the stirring blades according to different reaction stages, and simultaneously changing the tilt angle of the stirring blades, avoids the styrene-divinylbenzene copolymer spheres floating on the surface of concentrated sulfuric acid or accumulating at the bottom of the sulfonation tank, thus preventing a decrease in yield.
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Citation Information

Patent Citations

  • Sulfonating reactor for resin production

    CN221714276U