Choose the best heat exchanger cleaning method

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1、ChoosethebestheatexchangercleaningmethodHeat-transferequipmentcanbecleanedchemicallyormechanically.Thisarticleoffersguidanceonselectingthemethodandthefinalprocedure.hemajorityoffoulingdepositsthatforminchemicalprocessequipmentoriginateintheprocesfluidsthemselves.Waterbasedfluidscantr

2、ansportanddepositawidevarietyofminerals,andcorrosionproductsformduetothereactionoftheaqueousfluidswiththemetalsofconstruction.Hydrocarbonandpetrochemicalfluidstransportanddepositavarietyoforganicscales(mostofwhichincludepolymericmaterials).Hydrocarbonscanalsotransportsulfidesandmerca

3、ptansthatcanreactwiththeconstructionmaterialstoformironorcoppersulfides.Commoninorganic-scale-formingcompoundsincludevariousironoxides(redrustandmagnetite),hardnessdeposits(carbonates),andsilicates.Theorganicdepositsaremuchmorecomplexthaninorganicscale,becausetheyalmostalwayscontainm

4、ixturesofchemicals,includinglow-tohigh-molecular-weightpolymersandawidevarietyoffunctionalgroups.Surfacedepositsmustberemovedformanyreasons:toeliminatescalethatcontributestoincreasedcorrosion(suchasironoxidesandcopperfoundonthewatersideofmanytypesofprocessequipment);toincreaseheattra

5、nsfer;toincreasefluid-flowratesanddecreasepressuredrops(sincesmallchangesinpipediameterhavelargeeffectsonflowrateandpressuredrops);toreducedamagetodownstreamcomponents;tomakevesselssafebyeliminatingtoxic(e.g.,benzene)orflammable(hydrocarbon)vaporspriortovesselentry;toprepareasurfacef

6、orinspectionormaintenance;andtomakedisassemblyofequipmenteasier(especiallyforheavilyscaledshell-and-tubeexchangersthathavecloseassemblytolerances).Thisarticledescribesgeneralmethodsforcleaningheatexchangeequipment,includingbothmechanicalandchemicalprocedures,andgivesguidelinesforsele

7、ctingbetweenchemicalandmechanicalcleaning,andamongthevarioustypesofchemicalcleaningprocesses.BasicconsiderationsShell-and-tubeheatexchangers(includingaircoolersandcondensers)canbecleanedusingchemicalormechanicalmethodsoracombinationofthetwo.Theultimatechoicewilldependonanumberoffacto

8、rs:1.Thegoal