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1、1过滤风速问题气布比1filterwindspeedproblemTheselectionoffilteringwindspeediscrucialtoensurethedustremovaleffect,determinethesizeandareaofthedustcollector,andeventhetotalinvestmentofthesystem・Inrecentyears,inthedesignofdustremovalsystemofengineeringprojects,theselectionoffilteringwindspeedisbecomingmorea
2、ndmorelow:(1)somedesignersbelievethatthefilterwindspeedislower,whichcanimprovethedustremovalefficiency,enhaneetheashcleaningcapacityandYanChangqingashcycle,thusprolongingtheservicelifeofthefilterbag;(2)inthepast,somedocumentsormonographsstressedthatfilteringwindspeedcouldnotbecarriedouttoohigh,
3、soastoavoidtheincreaseofresistanceandtherunningcost:(3)thecurrentdomesticdustbag(excludingsmallbagunit)filtrationvelocityproductsampleprovisions,mostlybelow2.5m/min,ismorecommonin1"1.5m/min,thebigbagisbelow1m/min,evenwithcompressedairblowingashpulsebagfilterthefiltrationvelocitymaximumisonlyaro
4、und3m/min,morethan4m/minisrare・Asaresult,designetsoftentendtoreducethenumericalvalueofthefilterareaundertherecommendedfilteringwindspeedoftheproductsampletodeterminethefilterarea,whichresultsinalowvalueofthefiltrationwindspeed.Basedontheabovereasons,alargenumberoffilteringwindspeedisreducedfrom
5、0.1to0.25m/mininthedesign.Itshouldbesaidthattheabovereasonsarenotwithoutreason.However,ifeasilyreducethefiltrationvelocity,evenreducetheabsolutevalueofsmall,suchas0・1〜0.25m/min,whichwillmakethefilteringareaincreasedbyabout10%,equipmentinvestmentwillalsoincreasenearly10%,thevolumeincreases,incre
6、asedinvestmentwillinevitablymore,thesizeofthedevicewillbegreater・Obviously,thisisuneconomical;moreover,itisnotappropriatetolookattheabovereasonsinisolation.So,howtochoosethefilterwindspeedcorrectly?Infact,thisisamorecomplicatedwork・Itiscloselyrelatedtothepropertiesofdust,theinitialconcentration
7、ofdustgas,thetypeoffiltermaterialsandthewayofcleaningdust・However,fromthedesignpointofview,weshouldalsograspthemainissuesforanalysis・Thisisbecausethecurrentlyavailableproductsinthedomesticmediatypedustremoverandcleaningmoderelativ
