不同袋室结构下除尘器内部流场数值模拟研究  

Study on Internal Flow Field Numerical Simulation of Filter with Different Bag Structures

作　　者：张樱[1] 王贺岑 安连锁[1] 张营帅 

机构地区：[1]华北电力大学,北京102206 [2]河南省电力科学研究院,河南郑州450052

出　　处：《能源与节能》2012年第12期111-114,共4页Energy and Energy Conservation

摘　　要：采用数值模拟的方法对某热电厂直通式袋式除尘器在不同结构形式下内部流场状况进行了研究。结果表明:增加气流均布板可防止喇叭口内涡流的产生并缓冲烟气对第一排滤袋的直接冲刷,使袋室内部气流分布均匀;适当地降低袋室空间的高度,有利于烟气向后排滤袋流动,使滤袋流量分配均匀,获得过滤效果。通过数值模拟所得的结果为袋式除尘器的设计和选型提供指导。This paper studies the internal flow field of different structural straight-through bag filter in a thermal power plant by using the method of numerical simulation. The results show that： the increased airflow distribution board prevents the generation of eddy currents within the bell and buffer the direct erosion of flue gas to the first row of the filter bag, to distribute airflow inside the bag evenly; reducing the height of the bag space appropriately is conducive to the flue gas flowing to the rear filter bag, to make flow distribution inside the bag even, so that the filtering effect could be obtained. Provide guidance through numerical sim- ulation results for the design and selection of the bag.

关 键 词：袋式除尘器 数值模拟 袋室空间高度 流量分配 

分 类 号：TM925.31[电气工程—电力电子与电力传动]