简述降低旋风除尘器内阻力方法.docx

简述降低旋风除尘器内阻力方法

第一篇：简述降低旋风除尘器内阻力方法简述降低旋风除尘器内阻力方法旋风除尘器利用离心力和电场力的共同作用分离粒子。旋风除尘器内安装电晕极（称旋风除尘器）但不加电压的运行工况称为旋风除尘器的“静态”工况，此时的除尘效率称为旋风除尘器的静态除尘效率。为了研究安装电晕极对旋风除尘器除尘效率的影响，对常规旋风除尘器和旋风除尘器两种情况分别进行了各种入口风速下的除尘效率实验。常规旋风除尘器选用长筒体型，筒体直径为40mm、入口尺寸为270×110mm，排灰口直径为116mm。排气管直径为200mm，排气管插入深度460mm。在常规旋风除尘器内安装电晕极构成旋风除尘器，电晕极由15根直径4mm钢筋构成网状结构并固定在排气管上。实验粉尘为400h目滑石粉，发尘浓度控制在5g/m3左右。Cyclonebyusingthecommonroleofcentrifugalforceandelectricfieldforcetoseparateparticles.Coronapoleinstalledinthecyclone(cyclone)butdonotaddvoltageoperationcalled“static”conditionofcyclone,calledacyclonedustremovalefficiencyatamomentwhenthestaticdustremovalefficiency.Installationofcoronahttp://http://http://inordertostudyonthecyclonedustremovalefficiency,theinfluenceoftheconventionalcycloneseparatorandcyclonetwosituationsrespectivelyundervariousinletdustremovalefficiencyexperimentwascarriedout.Conventionalcyclonechoosetheirbody,cylinderdiameterof40mm,entrancesizeis270*110mm,ashdischargemouthdiameterof116mm.Exhaustpipediameterof200mm,theexhaustpipeinsertedintothedepthof460mm.Inaconventionalcycloneinstallationofcoronapolarcyclone,coronapoleconsistsof15rootdiameter4mmsteelmeshstructureandfixedontheexhaustpipe.Experimentis400hmeshtalcpowderdust,thedustconcentrationcontrolin5g/m3orso.常规旋风除尘器安装电晕极后除尘效率明显提高，除尘效率的变化规律与常规旋风除尘器除尘效率的变化规律相同，即先随着入口风速的增加而增加，至一最佳运行工况后，除尘效率又有所降低。常规旋风除尘器最佳运行工况在入口风速v=17m/s左右，此时，其总除尘效率达到了80%；而安装电晕极以后，旋风除尘器http://http://http://的静态最佳运行工况约在入口风速v=20m/s左右，静态总除尘效率达到约85%，增幅为6.3%左右。这说明仅仅安装电晕极而不加电压，就能使旋风除尘器的除尘效率明显提高电晕极。在旋风除尘器内具有提高效率的作用。Conventionalcyclonedustcleaningefficiencyobviouslyimprovedafterinstallationofcoronapole,thechangingruleofthedustremovalefficiencyandthechangingruleoftheconventionalcyclonedustremovalefficiencyisthesame,namelyfirstincreasedwiththeincreaseofinletwindspeedincrease,tothebestoperationcondition,thedustremovalefficiencyisreduced.Conventionalcyclonebestoperationconditionattheentrancetothewindspeedv=17m/sorso,atthispoint,thetotaldustremovalefficiencyreached80%;Andaftertheinstallationofcoron