摘要
在自行设计的闭循环试验台上,研究放电电极在不同间距情况下对粉尘收集的影响,讨论电除尘器电极与极板灰堆积特性的相关性。选取循环风量700m3/h、粉尘初始浓度120～200g/m3、46kV工作电压、收集40～50s,极板挂灰量的理论计算厚度为4mm。结果表明,灰形状为长方形,中心部位灰厚度较厚,四周边缘部位灰较薄;灰形状分布与电极结构相对应,芒刺针尖对应部位灰堆积最厚,芒刺中轴线对应部位灰堆积相对较薄;不同电极间距,芒刺对应位置灰的堆积密度相近约0.9g/cm3,只在单电极时堆积密度明显降低不足0.6g/cm3。
The characteristics of collected dust layer were studied using a laboratory ESP. Experiments were performed with different electrode distances, from 22 mm to 330 mm, and also with a single discharge electrode, with discharge of 40 to 50 seconds of voltage 46 kV, of inlet dust concentration 120 to 200 g/m^3 and at flow rate of 700 m^3/h. Ash layer thickness collected on the plate is about 4 mm in average. It is observed that the typical shape of the collected dust is rectanglar and the dust in the center is much thicker than elsewhere, which almost keeps constant.
出处
《科技导报》
CAS
CSCD
2008年第9期30-33,共4页
Science & Technology Review
基金
国家自然科学基金项目(20776131)
教育部高校博士点基金项目(20070335194)
