Dab tsi yog qhov tsawg kawg nkaus ua haujlwm sheath Thickness rau 316 Stainless Steel Laboratory Bath Heaters hauv Dilute Acetic Acid ntawm 60℃tsis muaj qhov siab

Kev Ua Lag Luam Yooj Yim -Tawm hauv Unpressurised Mild Acid Service

Cov chav dej da dej, qhov kub thiab txias - tswj cov hlab ntsha thiab cov tsav tsheb- nplai digesters feem ntau siv cov tshuaj tsis muaj zog ntawm acetic acid (5-10% concentration) ntawm ca 60℃. Cov tshuab no tau ua haujlwm ntawm huab cua siab thiab tsis muaj kev ntxhov siab rau ntawm lub tshuab rhaub cua sov li cov ntaub ntawv nrog cov hlab ntsha siab. Ib puag ncig yog acidic me ntsis nrog pH ntawm ib ncig ntawm 2.5-3.0 txawm li cas los xij acetic acid paub tias tsis tshua muaj antagonistic rau stainless hlau dua li cov ntxhia acids xws li hydrochloric lossis sulfuric acids. Nyob rau hauv no unpressurised kev pab cuam lub functional yuav tsum tau rau sheath thickness hloov drastic. Qhov tsawg kawg nkaus tuab ntawm phab ntsa yog xaiv los ntawm peb qhov sib txawv vim nws tsis tas yuav tsum tau tuav lub siab sab hauv: kev tiv thaiv corrosion rau lub neej kev pab cuam, lub zog txhua yam rau kev tuav thiab tu thiab cov kev txwv ntawm kev tsim cov raj. Qhov kev tshuaj ntsuam no txhais tau qhov tsawg tshaj plaws ntawm qhov ua tau zoo uas yuav ua kom ruaj ntseg ua tiav cov kev cai no yam tsis muaj kev tsim ntau dhau ntawm cov ntawv thov kev siv zog.

60℃dilute acetic acid corrosion pub

Tshaj tawm corrosion txheeb cais rau 316 stainless hlau nyob rau hauv 5-10% acetic acid ntawm 60℃qhia corrosion tus nqi ntawm 0.02-0.08 hli ib xyoo. Tus nqi qis dua yog hais txog cov kev daws teeb meem aerated thiab tus nqi siab dua rau cov xwm txheej deaerated thaum cov txheej tiv thaiv passive tsis ruaj khov. Rau ib lub chaw kuaj dej ib txwm siv 1000 teev hauv ib xyoos (kwv yees li 4 teev hauv ib hnub, 5 hnub hauv ib lub lis piam) cov hlau poob txhua xyoo yog 0.002-0.008 hli hauv ib xyoos thaum prorated rau lub sijhawm tiag tiag immersion. Tag nrho cov txheej txheem corrosion yog 0.02-0.08 hli tshaj li kaum xyoo kev pab cuam lub neej. Qhov tsawg kawg nkaus thickness tsim nyog los khaws cia txhua yam kev ncaj ncees rau lub unpressurised sheath yog hais txog 0.2-0.3 hli, uas yog txaus los tiv thaiv puncture los ntawm tej yam kev huam yuaj thiab ua kom cov hlau tsis kam thiab rwb thaiv tsev tag nrho. Qhov yuav tsum tau ua ntawm 0.22-0.38 hli yog ua tiav thaum lub kaum xyoo kev tiv thaiv corrosion ntxiv. Txhua lub thickness ntau dua 0.4 hli ua rau muaj kev tiv thaiv corrosion ntau dua li qhov xav tau tiag tiag.

Kev txwv ntawm Mechanical Handling thiab Manufacturing

Corrosion tsis xav tau cov phab ntsa tuab, tab sis qhov tseeb ntawm kev tsim cov raj thiab tuav hauv chav kuaj ua kom muaj qhov tsawg kawg nkaus. Rau qhov loj me me (6-10 hli txheej txoj kab uas hla) kev lag luam muaj seamless 316 stainless hlau hlab nrog phab ntsa thicknesses tsawg li 0.5 hli yog siv. Rau phab ntsa thickness tsawg dua 0.5 hli, raj tsim yog qhov nyuaj thiab kev pheej hmoo ntawm tus pin qhov lossis cov phab ntsa tsis sib npaug nce. Tsis tas li ntawd, chav kuaj chav da dej tso cua sov feem ntau raug muab tshem tawm los ntxuav, rubbed tiv thaiv iav thiab cuam tshuam tsis zoo thaum lub sijhawm sim teeb tsa. Nrog rau phab ntsa tuab ntawm 0.5 hli nws yog qhov hloov tau yooj yim thiab tuaj yeem dented nrog me ntsis ntaus rau ntawm lub tshuab ntxhua khaub ncaws hlau lossis countertop ntug. Lub phab ntsa 0.7 hli muab kev tiv thaiv ntau dua thiab tseem ua kom muaj cua sov. "A 1.0 hli phab ntsa muaj zog txaus rau kev ua haujlwm hauv ib txwm siv, tab sis ntxiv cov khoom siv tsis xav tau thiab nqi.

Kev ua tau zoo ntawm cov chav da dej cua sov ntawm lub zog qis

Laboratory tubs feem ntau yog tsawg- cov neeg siv hluav taws xob, xav tau ntawm 500 thiab 1500 W rau chav da dej ntawm 5 txog 20 litres. Feem ntau cov cua kub tsis yog qhov tseem ceeb, nrog rau feem ntau cov txheej txheem hu rau qhov nce siab nyob rau hauv qhov kub thiab txias kom txo qis overshoot. Txawm li cas los xij, lub thermal loj ntawm lub sheath cuam tshuam rau stability ntawm qhov kub thiab txias. Lub sheath thinner yog teb ntau dua rau kev tswj cov ntsuas kub, thiab txo qhov kub thiab txias thiab oscillation. Lub sheath ntawm 0.6 hli yuav teb sai dua li lub sheath ntawm 1.5 hli nrog da dej hloov mus rau ± 0.5 degree. Qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm 0.6 hli thiab 1.2 hli yog ~ 0.002 m2K / W, uas sib haum rau qhov kub ntawm qhov sib txawv ntawm 2-3℃rau ib txwm kuaj watt ntom ntawm 3-5 W / cm2. Qhov sib txawv no tsis muaj qhov tseem ceeb rau feem ntau cov kev sim, tab sis tuaj yeem yog qhov tseem ceeb rau qhov ntsuas kub ntawm cov khoom siv roj ntsha lossis kev tshawb fawb kinetic.

Summary Table of Yam Tsawg Ua Haujlwm Thicknesses

Thickness Corrosion nyiaj pub dawb (10 xyoo) Muaj peev xwm ntawm kev tsim khoom Mechanical robustnessThermal Response Pom zoo Daim ntawv thov
0.5 hli Txaus (0.42-0.48 hli sab laug) Mos (yooj yim rau dent) Tsis tuaj yeem xaj; txwv zoo heev Ua tib zoo tuav nkaus xwb
0.7 hli OK (0.62-0.68 hli seem) Nruab Nrab (tiv thaiv lub teeb pom kev zoo) Yooj yim rau siv Cov khoom siv hauv chav kuaj zoo heev
1.0 hli Ntau dhau (0.92-0.98 hli seem) Zoo (tus qauv robustness) Hnyav-duty lab los yog qhia lab Zoo Standard Tshuag
1.5 hli Qhov tseem ceeb tshaj plaws Cov khoom lag luam zoo heev txo qis dua rau kev pabcuam
Xaus $ ion: Yam tsawg kawg nkaus ua haujlwm Thickness rau Laboratory Service

Qhov tsawg kawg nkaus ua haujlwm sheath thickness rau 316 stainless hlau kuaj chav da dej rhaub hauv dilute acetic acid ntawm 60℃uas tsis muaj qhov siab sab hauv yog 0.6-0.7 hli. Qhov tuab no muab kev tiv thaiv corrosion ntau dua 0.5 hli rau 10 xyoo, kev siv tshuab ua haujlwm zoo rau kev siv hauv chav kuaj niaj hnub, thiab cov lus teb thermal siab rau kev tswj qhov kub thiab txias. Phab ntsa tsawg dua 0.5 hli yog qhov nyuaj rau nrhiav thiab sai sai puas. Cov phab ntsa ntawm ntau tshaj 1.0 hli ntxiv cov nuj nqis thiab cov thermal bulk yam tsis muaj txiaj ntsig tiag tiag hauv qhov kev pabcuam tsis muaj zog, me ntsis corrosive. Rau chav kuaj acetic acid da dej, engineers yuav tsum tau txhais 0.7 hli raws li lub hom phiaj thickness, nrog rau kev siv ntau yam ntawm 0.6-0.8 hli. Qhov kev qhia tshwj xeeb no zam qhov tsis zoo ntawm kev xaiv cov khoom lag luam-qib thicknesses rau cov khoom siv hauv chav kuaj, txuag cov khoom siv thiab txhim kho kev ua haujlwm thermal.