Yuav ua li cas 316 Stainless Hlau Sheath Phab Ntsa Thickness cuam tshuam tus nqi ntawm sab nrauv Fouling los ntawm Polymerizing Media nyob rau hauv hluav taws xob Immersion rhaub rau Resin thiab Adhesive Tanks?

External fouling, tsim-li ntawm cov khoom siv polymerised rau ntawm lub plhaub, yog ib qho teeb meem pheej yig thiab kim heev rau cov txheej txheem chemical engineers khiav hluav taws xob immersion heaters hauv resin tsim, nplaum ntau lawm thiab polymer ua. Fouling khaubncaws sab nraud povtseg ua hauj lwm raws li thermal insulators thiab txo tshav kub hloov efficiency. Lub rhaub yuav tsum khiav ntawm qhov kub ntawm cov hlau sab hauv. Fouling ntawm lub thickness tseem ceeb yuav ua rau lub rhaub dej kub dhau thiab ua tsis tiav, uas yuav xav tau lub tank kaw thiab ntxuav. The fouling rate of the 316 stainless steel sheath is influenced by wall thickness through two mechanisms: the surface temperature at a particular watt density and the thermal reaction during cleaning cycles. Cov phab ntsa Thicker khiav kub dua rau tib lub zog tso zis, uas tuaj yeem ua kom nrawm dua polymerisation fouling, tab sis kuj tso cai rau siab dua rau kev tu txhua lub sijhawm. Daim ntawv no ntsuas kev sib raug zoo ntawm 316 sheath phab ntsa thickness, nto kub thiab fouling tus nqi nyob rau hauv polymerising media thiab muab tswv yim rau resin thiab nplaum tank cua sov xaiv.

Polymerisation fouling ntawm 316 qhov chaw: Qhov cuam tshuam ntawm qhov kub thiab txias
Ntau cov txheej txheem cob thiab cov nplaum tau dhau los ua polymerization los ntawm cov txheej txheem dawb -radical lossis condensation uas yog exponentially nyob ntawm qhov kub thiab txias. Qhov kev sib raug zoo ntawm Arrhenius qhia tau hais tias tus nqi ntawm polymerisation ntawm qhov chaw rhuab feem ntau yog ob npaug rau txhua qhov kub ntawm 10-15 degrees. Tus nqi ntawm polymerization fouling ntawm ib lub plhaub ntawm 100℃nyob rau hauv ib tug unsaturated polyester resin ntawm ib tug tej kub ntawm 80℃yog hais txog 0.1 mm / lub lis piam rau ib tug 316 sheath. Nyob rau saum npoo ntawm 120oC lub pace nce mus rau 0.4 hli txhua lub lim tiam. Ntawm 140℃nws yog 1.5 mm / lub lis piam - nrawm txaus kom foul lub rhaub kom tiav hauv ib hlis. Qhov tseem ceeb ntawm qhov kub thiab txias ntawm cov khoom siv polymerising feem ntau yog kwv yees li 15-25℃siab dua qhov kub ntawm cov resin. Hauv qab no theem fouling yog maj mam thiab tswj. Saum toj no, lub fouling pib nrog ceev ceev. Lub thicker 316 sheath tsim qhov kub thiab txias dua rau qhov muab watt ntom. Yog li cov tuab- cov cua sov phab ntsa nyob rau tib qhov kub thiab cov zis hluav taws xob yog qhov ua rau fouling sai dua li cov cua sov uas muaj phab ntsa nyias.

Yuav Ua Li Cas Phab Ntsa Thickness cuam tshuam rau Fouling Cleaning Cycle
Sheath phab ntsa thickness cuam tshuam ob qho yooj yim ntawm kev ntxuav thiab kev pheej hmoo ntawm kev puas tsuaj yog tias ua haujlwm tu txhua lub sijhawm (feem ntau txhua 2-4 lub lis piam). Kev ntxuav ntawm nyias- phab ntsa sheaths hauv qab 1.0 hli yog yooj yim dua li cov fouling txheej nyias nyias thaum lub sij hawm ntxuav vim qhov kub ntawm qhov chaw txo qhov fouling tus nqi. Txawm li cas los xij, cov txheej txheem tu txhua yam xws li khawb, txhuam hniav lossis cov dav hlau dej siab tuaj yeem ua rau cov phab ntsa nyias nyias los ntawm kev denting lossis punctures. Sheaths tuab dua 1.8 hli muaj cov phab ntsa tuab thiab tsis raug puas los ntawm kev siv tshuab ntxhua khaub ncaws hnyav, tab sis lawv foul sai dua thiab tsim cov thicker, ntau tenacious deposits uas nyuaj rau tshem tawm. Qhov zoo tshaj plaws phab ntsa thickness rau polymerising xov xwm yog li kev sib haum xeeb ntawm ua tuab txaus los tiv thaiv kev ntxuav thiab nyias txaus kom qhov kub ntawm qhov chaw hauv qab ntawm qhov pib ua rau fouling ceev. Qhov zoo tshaj plaws yog nyob rau hauv thaj tsam ntawm 1.2 hli mus rau 1.6 hli rau feem ntau cov ntaub ntawv resin.

Pom Phab Ntsa Thickness rau Polymerising Media Service
Cov lus hauv qab no teev cov lus pom zoo 316 sheath phab ntsa thickness rau hluav taws xob immersion heaters rau cov kua nplaum thiab nplaum tso tsheb hlau luam, raws li qhov kub thiab txias, kwv yees fouling tus nqi thiab cov txheej txheem ntxuav.

Bulk Media Temperature Polymerization Rate ntawm Bulk Temperature Pom Zoo Watt Density Pom Zoo 316 Phab Ntsa Thickness Sheath Surface Kub ntawm Pom Zoo Thickness Cia Siab Fouling Rate Pom Zoo Txoj Kev Tu
20 - 40℃(txias pib, kho qeeb) Tsis tshua muaj 8 - 12 W / cm 2 1.0 - 1.4 mm 40 - 60℃< 0.05 mm / lub lis piam Cov tshuaj tua kab mob tsuas yog 40 - 60℃(sov, kho mob me) Tsawg 6 - 10 W / cm {0.6 - 10.8mm{10.8} – 0.15 mm/lub limtiam Chemical or soft txhuam 60 – 80℃(active kho) Nruab nrab 4 – 8 W/cm2 1.4 – 1.8 mm 80 – 100℃0.15 – 0.40 mm/lub limtiam Tshuaj thiab txhua yam 80 – 100℃(kho sai 3 mm. – 23 mm.) 100 - 120℃0.40 - 1.00 mm/lub lim tiam Kev tu tshuaj 100 – 120℃(kho sai heev) Siab heev 2 – 4 W/cm² 1.8 – 2.5 mm 120 – 140℃1.00 – 2.50 mm/week Requires tshwj xeeb
>120℃siab heev Hauv qab 2 W / cm2 Tsis pom zoo Tshaj 140oC Kev tsis ua haujlwm nrawm Hloov mus rau chav lossis cua sov sab nraud
Ntawm cov xov xwm kub tshaj 100 degree, active polymerization tsis pom zoo rau 316 stainless hlau sheaths tsis hais txog ntawm phab ntsa thickness. Qhov kub ntawm qhov chaw tsim nyog kom tau txais cov tswv yim watt ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom. Nyob rau hauv cov xwm txheej no, engineers tej zaum yuav xav saib sab nraud tank cua sov (txawm lub tsho los yog coils) los yog hloov mus rau ib tug uas tsis yog - stick coated sheath. PTFE los yog fluoropolymer txheej ntawm 316 sheaths tuaj yeem muab qhov qis- lub zog saum npoo uas cov ntaub ntawv polymerised tsis lo rau ruaj khov thiab tuaj yeem txo qhov fouling ntawm 70-90%. Cov txheej txheej, txawm li cas los xij, ntxiv cov nuj nqis thiab tuaj yeem txwv qhov kev ua haujlwm siab tshaj plaws rau 200-260 degree, nyob ntawm seb hom txheej txheej.

Tsim cov kev hloov pauv kom txo qis fouling yam tsis tau nce phab ntsa tuab
Peb qhov kev txhim kho tsim tau pom tias yuav txo qhov fouling tus nqi yam tsis tau nce phab ntsa thickness nyob rau hauv rooj plaub thaum nyias -walled 316 sheath hauv qab 1.2 hli yog tsim nyog rau thermal teb nyob rau hauv polymerising kua. Thawj yog los txhim kho cov kev ncig ntawm lub tshuab cua sov. Los ntawm kev nce cov kua dej tawm ntawm qhov chaw ruaj khov mus rau 0.5 m / s, qhov kub ntawm qhov chaw tuaj yeem raug txo los ntawm 10-15℃rau tib lub watt ntom ntom, vim tias cov kua dej txhim kho tau zoo dua - sab hauv tshav kub hloov coefficient. Qhov ntsuas kub qis dua ncaj qha cuam tshuam rau tus nqi polymerization. Qhov thib ob hloov yog mus ncig lub rhaub ntawm ib tug ntau dua watt ceev es tsis khiav nws tsis tu ncua ntawm ib tug qis watt ceev. Lub rhaub 12 W / cm² kav ntev 5 min rau thiab 10 min tawm tuaj yeem muaj lub zog nruab nrab zoo ib yam li lub rhaub dej kub khiav ntawm 8 W / cm² tsis tu ncua, tab sis qhov kub siab tshaj plaws saum npoo yog siab dua. Kev ua haujlwm kub kub hauv qhov tseeb tuaj yeem txhim kho fouling, yog li kev ua haujlwm tsis sib xws tsuas yog muaj txiaj ntsig yog tias lub sijhawm tawm - lub sijhawm tso cai rau lub plhaub kom txias hauv qab qhov chaw ua haujlwm polymerisation txhawm rau tiv thaiv kev tso nyiaj ntxiv - nce. Qhov kev hloov pauv zaum kawg yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau daim iav ci ntawm tsawg dua 0.2 microns Ra. Smoother nto yog yooj yim los ntxuav, vim hais tias cov polymers muaj tsawg dua nucleation qhov chaw los ua raws li . Electropolishing ntawm 316 sheaths tuaj yeem txo tus nqi fouling los ntawm 20-40% piv rau li -swaged finishes . Hauv cov ntawv thov uas fouling tsis tuaj yeem lees txais rau cov ntawv thov tseem ceeb, cov kws ua haujlwm yuav tsum qhia txog ob lub-cov qauv tsim nrog lub tes tsho sab nrauv tshem tau. Lub tes tsho sab nrauv, tsim los ntawm nyias- phab ntsa 316 lossis cov khoom tsis yog- cov ntaub nplaum nplaum, sib sau cov fouling thiab tuaj yeem hloov tau ntau zaus yam tsis tso tag nrho lub tshuab cua sov. Cov txheej txheem no muaj cov nqi them ua ntej tab sis txo qhov ntev - siv sijhawm ua haujlwm hauv kev pabcuam fouling hnyav. Always ask the heater manufacturer for the projected surface temperature for the requested watt density and wall thickness when specifying heaters for polymerising media. Sib piv qhov ntsuas kub no mus rau qhov chaw tsim kho polymerization rau cov cob lossis cov kua nplaum. Qhov sib txawv ntawm 10℃tuaj yeem yog qhov sib txawv ntawm rau lub hlis ntawm kev ua haujlwm tsis muaj teeb meem thiab kev ntxuav txhua lub lim tiam.