Cementitious polymer-based dust collector hopper dry declogging method

By employing agglomeration and vibration fragmentation technologies, the problem of removing scattered small clumps from the inner wall of the ash hopper of a bag filter is solved, achieving waterless and efficient cleaning, reducing cleaning frequency and cost, and making it suitable for ash hopper scale treatment in flue gas purification equipment of coal-fired power plants.

CN122399469APending Publication Date: 2026-07-17JINHUA HUADONG ENVIRONMENTAL PROTECTION EQUIP CO LTD
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Patent Information

Application Number
CN202610691804.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-19
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, it is difficult to actively remove the scattered small clumps on the inner wall of the dust hopper of a bag filter in the early stages, and wet cleaning will generate industrial wastewater, resulting in unstable cleaning effect and increased cost.

Method used

By employing a gelation bonding method, scattered small clumps are bridged into a large, integral clump through a gel reaction medium, and then vibratory fragmentation technology is used to cause its brittle fracture. Combined with the application of a protective film and dry cleaning, waterless removal is achieved.

Benefits of technology

It achieves efficient removal of scale buildup on the inner wall of the ash hopper, avoids the generation of industrial wastewater, reduces cleaning frequency and cost, and keeps the removed material dry so that it can be directly incorporated into the dry ash conveying system.

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Abstract

本发明公开了一种基于胶凝聚合的除尘器灰斗干法除垢方法。该方法包括四个循环执行的步骤:S1预防性保护膜施作,通过定向行走结构带动促膜喷料管沿集尘腔内壁全域扫掠,喷洒脱模剂形成连续保护膜,降低粉尘附着力;S2凝胶反应聚合处理,向内壁喷洒凝胶反应介质,利用水化胶凝反应将零散小板结聚合为具有脆性断裂特征的整体性大板结;S3振动碎化脱落处理,通过安装于灰斗外壁的震打电机施加冲击振动,使大板结发生连锁式脆性断裂并沿倒锥形内壁滑落排出;S4复检与干法清理,以压缩空气吹扫残留薄垢并重建保护膜,恢复至初始状态。本发明全程采用干法作业,不产生工业废水,清除物料可直接并入干灰输送系统。
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Citation Information

Patent Citations

  • A cartridge dust collector equipped with a dust hopper and water spraying device

    CN109289381B