W型火焰炉旋风分离器分离特性的实验研究  

Experimental Investigation of the Separating Characteristics of a Cyclone Separator for a W Shaped Flame-based Boiler

作　　者：张杰[1] 李争起[1] 靖剑平[1] 任枫[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《热能动力工程》2007年第1期65-68,共4页Journal of Engineering for Thermal Energy and Power

基　　金：2005年度教育部新世纪优秀人才支持计划基金资助项目(NECT-04-0328);国家863计划基金资助项目(2006AA05Z321)

摘　　要：W型火焰炉旋风分离器是一种利用旋风分离原理进行浓缩的煤粉浓缩器。在气固两相实验台上进行了分离器气固分配特性的实验研究。结果表明,在乏气挡板开度为100%时,乏气仅占总风量的35%,一次风浓侧颗粒浓度由入口处的0.58 kg/kg上升到0.80 kg/kg,煤粉浓缩效果较差。为此,将乏气管直径由80 mm提高到100 mm,实验测得:在乏气挡板开度100%时,乏气占总风量的65%,一次风颗粒浓度上升到1.58 kg/kg,取得了较好的浓缩效果。The cyclone separator for a W shaped flame-based boiler is a kind of pulverized coal concentrator operating on a cyclone separation theory.An experimental study of gas-solid distribution characteristics of the cyclone separator was conducted on a gas-solid two-phase flow test rig.The test results show that when the opening of the exhaust gas valve reaches 100%,the exhaust gas flow will only account for 35% of the total air flow.The concentration of primary air particles will rise from 0.58 kg/kg at the inlet to 0.80 kg/kg at the outlet,but the concentration effectiveness of pulverized coal was relatively poor.In view of this,the diameter of the exhaust gas tube was increased from 80 mm to 100 mm.It has been determined from a test that when the exhaust gas valve is fully opened(100%),the exhaust gas will account for 65% of the total air flow with the concentration of the primary air particles rising to 1.58 kg/kg,thus achieving a relatively good concentration effectiveness.

关 键 词：W型火焰炉 旋风分离器 气固两相流 乏气挡板 煤粉浓缩 

分 类 号：TK223.2[动力工程及工程热物理—动力机械及工程]