不同特性粉尘对滤筒有效脉冲清灰压力的影响研究  

Study on influence of dust with different characteristics on effective pulse dust removal pressure of filter cartridge

作　　者：林涛 谢智宇 杨光辉 周美伊柏 林小嘉 林龙沅[1] LIN Tao;XIE Zhiyu;YANG Guanghui;ZHOU Meiyibo;LIN Xiaojia;LIN Longyuan(College of Environment and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;Guangyuan China Nuclear Vocational and Technical College,Guangyuan Sichuan 628003,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]广元中核职业技术学院,四川广元628003

出　　处：《中国安全生产科学技术》2024年第4期101-107,共7页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(52204286);四川省科技计划项目(2023YFS0362)。

摘　　要：为改善不同特性粉尘的清灰问题,选取3种不同黏性、不同粒径的粉尘,开展工业覆粉实验以探究除尘器的运行阻力和滤筒清灰效果的变化。研究结果表明:粉煤灰的最低清灰压力达到748 Pa,即可实现有效清灰;对于黏性粉尘,粉尘粒径对清灰的影响更显著,细粉尘对应的系统压降和粉尘残余体积量明显高于粗粉尘,中等黏性的MgO粉体最低有效清灰压力需要达到1 425 Pa,超细MgO则需要更高;高黏性的CMC-Na粉体对应的系统压降、压降平稳时间和粉尘残余体积量都明显高于其他粉体,其有效清灰压力需要至少达到1 657 Pa,除尘系统才能长时间运行。研究结果可为工业应用收集不同特性粉尘提供理论参考。In order to improve the dust removal problem of dust with different characteristics,three types of dust with different viscosity and particle sizes were chosen,and the industrial dust coating experiments were carried out to investigate the change in the operating resistance of dust remover and the dust removal effect of filter cartridge.The results show that the minimum dust removal pressure of fly ash reaches 748 Pa,which can realize the effective dust removal.for the viscous dust,the influence of dust particle size on dust removal is more significant,and the corresponding system pressure drop and dust residual amount of fine dust are significantly higher than those of coarse dust.The minimum effective dust removal pressure of MgO dust with medium viscosity needs to reach 1425 Pa,which is even higher for ultrafine MgO.The corresponding system pressure drop,pressure drop stabilization time and dust residual amount of CMC-Na dust with high viscosity are much greater than other dust,and its effective dust removal pressure must reach at least 1657 Pa,so that the dust removal system can operate for a long time.The research results can provide a theoretical reference for industrial application to collect the dust with different characteristics.

关 键 词：滤筒除尘器 粉尘特性 最低有效清灰压力 

分 类 号：X964[环境科学与工程—安全科学]