陶瓷管耦合粉尘荷电技术去除白炭黑的研究  

Research on Silica Removal with Ceramic Tubes Combined with Dust Pre-charge Technique

作　　者：刘海弟[1] 李伟曼[1] 陈运法[1] 邹永平 张晖 冯家迪 钱均新 LIU Haidi;LI Weiman;CHEN Yunfa;ZOU Yongping;ZHANG Hui;FENG Jiadi;QIAN Junxin(State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;Jiangsu Province Yixing Nonmetallic Chemical Machinery Factory Co.,Ltd.,Yixing 214221,China;Nantong Institute of Technology,Nantong Jiangsu 226002,China)

机构地区：[1]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [2]江苏省宜兴非金属化工机械厂有限公司,江苏宜兴214221 [3]南通理工学院,江苏南通226002

出　　处：《环境影响评价》2021年第4期63-66,共4页Environmental Impact Assessment

基　　金：中国科学院先导专项A(No.XDA21040401);中国科学院重点部署项目(No.ZDRW-ZS-2017-6-2);国家重点研发计划(No.2018YFC0213400)。

摘　　要：采用多孔陶瓷过滤管为过滤介质,研究了预荷电手段对气相法白炭黑去除过程的影响。研究发现,在没有粉尘预荷电的情况下,白炭黑形成的粉饼压降很高,在粉尘荷电情况下,系统过滤阻力显著降低,相同除尘时间下仅为不荷电情况下的一半。随着荷电电压的上升,预荷电对过滤除尘的影响越大,但当荷电电压达到30 kV时,升高电压对除尘的促进作用不再提高,从电晕放电的机理角度对上述现象进行了解释。预荷电对除尘过程的促进作用有望使陶瓷管除尘成为超细粉尘捕收或去除的有效手段。The influence of pre-charge technique upon the fumed silica removal with porous ceramic tubes used as filtration medium was investigated.It was shown by the results that without pre-charge technique,the silica would generate powder cake with high pressure drop,however,when pre-charge technique was applied,the pressure drop of filtration system decreased sharply:which was only half of the case when pre-charge technique was not employed.With higher pre-charge voltage,the effect of pre-charge technique upon the silica removal process became more obvious,but when the pre-charge voltage reached 30 kV,higher voltage no longer improved the dust-removal process,the phenomenon mentioned above was explained by the corona discharge mechanism.The benefiting effect from pre-charge technique was expected to make the ceramic tube a effective means to remove or capture ultrafine powder.

关 键 词：除尘 预荷电 多孔陶瓷管 过滤 

分 类 号：X701.2[环境科学与工程—环境工程]