Concentrating sulfuric acid los ntawm 70% mus rau 98% cuam tshuam nrog boiling nyob rau hauv lub nqus tsev vacuum ntawm qhov kub thiab txias uas sai sai ua kom puas cov khoom siv hlau thiab hnyav heev txawm tias siab -kev ua tau zoo corrosion- cov ntaub ntawv resistant. Nyob rau hauv ib puag ncig hnyav ntawm cov kua qaub rov qab los yog cov nroj tsuag sulfonation, tantalum heat exchanger ua cov haujlwm tseem ceeb ntawm kev ua kom txias cov kua qaub ua ntej khaws cia lossis kev ua haujlwm hauv qab, thaum tseem tseem ceeb tsis cuam tshuam los ntawm cov kab mob corrosive.
Nyob rau hauv niaj hnub sulfuric acid systems, txias tsis yog ib tug thib ob ua hauj lwm. Cov kua qaub kub tawm hauv cov theem concentration yuav tsum ceev nrooj ruaj khov los tiv thaiv cov twj tso kua mis, cov kav dej, cov hlab ntsha, thiab kev ntsuas. Raws li cov xwm txheej no, tantalum tau tshwm sim los ua ib qho ntawm ob peb cov khoom siv engineering uas muaj peev xwm xa tau ntev - lub sij hawm cia siab rau.
Vim li cas Concentrated Sulfuric Acid thiaj li nyuaj rau txias
Extreme Corrosive Conditions
Concentrated sulfuric acid ua nruj nreem thaum kub nce.
Thaum lub sijhawm ua haujlwm siab thiab rov ua haujlwm, cov txheej txheem txheej txheem feem ntau suav nrog:
Acid concentration nce mus txog 98%
Kub mus txog 200 degree
Lub tshuab nqus tsev evaporation
Cov kab mob sulfur trioxide
Oxidizing tshuaj hom
Ntau cov alloys feem ntau ua tsis tau sai nyob rau hauv cov xwm txheej no.
Stainless hlau tej zaum yuav muaj kev ceev corrosion, thaum cov khoom siv graphite tuaj yeem raug blistering, permeability teeb meem, thiab thermal shock puas.
Cov theem cua txias yog li ntawd yuav tsum muaj cov khoom muaj peev xwm ua kom muaj sia nyob ob qho tib si siab kub thiab mob siab rau tshuaj tua kab mob ib txhij.
Txias ua ntej cia thiab rov siv dua
Tom qab concentration, acid feem ntau yuav tsum tau txias ua ntej:
Cia
Rov ua dua rau cov txheej txheem txheej txheem
Kev siv sulfonation pub
Hloov cov twj tso kua mis
Cov khoom ntim
Yog tias tsis muaj kev ua kom txias zoo, cov khoom siv hauv qab dej yuav raug luv luv.
Qhov no yog qhov twgtantalum kub exchanger concentrated sulfuric acid txiasua ib qho tseem ceeb ntawm cov txheej txheem kab.
Vim li cas Tantalum ua tau zoo heev hauv Sulfuric Acid
Tus kheej -Kev Tiv Thaiv Oxide
Tantalum tshuav nws qhov tshwj xeeb corrosion tsis kam mus rau qhov ruaj khov thiab tus kheej - kho oxide zaj duab xis uas tsim ib txwm nyob ntawm cov hlau nto.
Cov txheej txheem oxide no tseem muaj zog heev rau sulfuric acid thoob plaws ntau yam ntawm:
Acid concentration
Txheej txheem kub
Oxidizing tej yam kev mob
Hauv kev pabcuam sulfuric acid kom zoo, tantalum muaj kev tiv thaiv zoo rau kev tiv thaiv corrosion mus txog cov kua qaub qhov kub hnyiab, nrog rau cov ntawv thov nce mus txog 200 degree.
Qhov tshwj xeeb tiv thaiv no ua rau tantalum yog ib qho ntawm ob peb cov hlau uas haum rau ntev - lub sij hawm raug nyob rau hauv concentrated sulfuric acid coolers.
Ua rau Sulfur Trioxide thiab Aggressive Hom
Muaj sulfuric acid ntws tsis tshua muaj cov ntshiab sulfuric acid ib leeg.
Ntxiv aggressive compounds tej zaum yuav muaj xws li:
Sulfur trioxide
Sulfur oxides
Oxidizing cov kab mob
Tshawb nrhiav chlorides
Cov hom no feem ntau ua kom corrosion nyob rau hauv tsawg alloys. Tantalum, txawm li cas los xij, tswj kev ruaj ntseg zoo nyob rau hauv ntau ntawm cov tshuaj sib xyaw ua ke.
Qhov kev ntseeg siab no yog qhov tseem ceeb tshwj xeeb hauv cov nroj tsuag cov kua qaub uas cov txheej txheem chemistry yuav hloov pauv thaum lub sijhawm ua haujlwm.
Hom Tsim ntawm Tantalum Sulfuric Acid Cooler
Plhaub-thiab-Tube Construction
Feem ntau cov concentrated sulfuric acid coolers siv plhaub - thiab - tube exchanger designs.
Ib tug raug configuration muaj xws li:
Tantalum tubes
Tantalum{0}}clad tubesheets
Carbon steel los yog stainless hlau plhaub qauv
Cov dej txias los yog cov kua dej thib ob ntawm lub plhaub sab
Cov tantalum Cheebtsam tseem nyob ib leeg los ntawm corrosive acid kwj thaum lub siab sab nraud - tuav lub plhaub feem ntau tuaj yeem tsim los ntawm cov khoom siv nyiaj txiag ntau dua.
Nyias-Walled Tantalum Tubes
Vim tias tantalum yog cov hlau kim heev, cov khoom sib pauv tsim los txo qis tag nrho cov khoom siv thaum ua kom cov cua sov ua kom zoo tshaj plaws.
Tube phab ntsa feem ntau yog tsim tawm heev nyias, feem ntau nyob ib ncig ntawm 0.5 hli.
Nyias- kev tsim phab ntsa muab ntau yam zoo:
Txhim kho thermal hloov
Txo cov khoom siv hlau
Tsawg exchanger hnyav
Kev ua kom txias sai dua
Cov thermal conductivity ntawm tantalum kuj tseem ua rau cov khoom sib txuas sib txuas sib txuas nrog cov khoom siv hluav taws xob tsawg dua -cov ntaub ntawv resistant.
Thermal Performance Advantages
Compact Heat Exchanger Design
Lub siab thermal conductivity ntawm tantalum tso cai rau cov cua kub hloov tau zoo txawm nyob rau hauv cov kev pab cuam hnyav acid.
Qhov no txhais tau tias:
Me me exchanger footprints
Shorter tube pob khoom
Txo cov txheej txheem tuav- nce ntim
Txhim kho installation yooj
Hauv kev xyaum, compactness ua tshwj xeeb tshaj yog muaj txiaj ntsig hauv cov nroj tsuag tshuaj lom neeg uas cov txheej txheem cov khoom siv ceev yog siab.
Lub Sij Hawm Ntev -Lub Sijhawm Kub Hloov
Ntau yam corrosion-cov ntaub ntawv tiv taus maj mam poob thermal ua haujlwm vim:
Corrosion scaling
Nto roughening
Khoom degradation
Fouling tsub zuj zuj
Tantalum qhov tshwj xeeb tshuaj lom neeg ruaj khov pab khaws cia ntev -lub sij hawm hloov hluav taws xob ua haujlwm nyob rau ntau xyoo ntawm kev pabcuam.
Qhov kev ruaj ntseg no yog qhov laj thawj tseem ceeb vim li cas tantalum exchangers feem ntau tau teev txawm tias lawv cov nqi pib pib siab.
Cov Lus Qhia Ua Haujlwm
Qhov tseem ceeb ntawm kev tuav cov txheej txheem oxidizing
Tantalum tso siab rau nws cov yeeb yaj kiab oxide passive rau corrosion kuj.
Vim li no, kev tswj hwm tus cwj pwm oxidizing ntawm cov txheej txheem ib puag ncig yog qhov tseem ceeb rau lub sijhawm ntev - kev ntseeg tau ntawm cov cuab yeej siv.
Raws li kev txo qis, cov yeeb yaj kiab tsis zoo yuav ua rau tsis zoo.
Kev saib xyuas tshwj xeeb yuav tsum tau muab rau cov kev txwv tantalum paub. Tantalum tuaj yeem raug tawm tsam los ntawm:
Hydrofluoric acid
Fluoride- muaj cov tshuaj
High dawb sulfur trioxide concentrations hauv oleum
Kev ntsuam xyuas cov khoom siv sib xws tseem tseem ceeb ua ntej xaiv cov khoom siv zaum kawg.
Kev txiav txim siab txog nyiaj txiag thiab lub neej
Tus nqi pib siab tab sis lub neej ua haujlwm ntev
A tantalum kub exchanger concentrated sulfuric acid txiasfeem ntau yog ib qho ntawm cov khoom kim tshaj plaws nyob rau hauv chav tsev acid concentration.
Txawm li cas los xij, kev nqis peev yog tsim nyog los ntawm ntau qhov kev ua haujlwm zoo:
Lub neej ua haujlwm ntev heev
Tsawg corrosion- cuam tshuam txog lub sijhawm poob
Kev ua haujlwm ruaj khov thermal
Txo kev kis kab mob
Tsawg txij nkawm ntau zaus
Ntau chav nyob yog tsim los nrog kev cia siab ua haujlwm lub neej ntsuas nyob rau hauv kaum xyoo ntau dua li xyoo.
Cov txheej txheem tseem ceeb ntseeg tau
Kev ua tsis tiav ntawm lub tshuab ua kua qaub tuaj yeem cuam tshuam tag nrho cov txheej txheem concentration thiab tsim kev nyab xeeb loj thiab kev pheej hmoo ntawm ib puag ncig.
Vim li no, kev ntseeg siab feem ntau tshaj cov nqi khoom siv hauv cov nroj tsuag sulfuric acid.
Tantalum qhov kev tiv thaiv corrosion thiab kev kwv yees ntev ntev -kev coj cwj pwm muab cov qib kev ntseeg siab ua haujlwm uas yuav tsum tau muaj hauv cov txheej txheem tseem ceeb no.
Daim ntawv thov Beyond Acid Recovery
Sulfonation Systems
Tantalum coolers kuj tau siv dav hauv cov txheej txheem sulfonation uas muaj cov sulfuric acid los yog sulfur trioxide-cov kwj yuav tsum tau ua kom txias nyob rau hauv cov mob hnyav heev.
Tshwj xeeb Chemical Manufacturing
Cov ntawv thov ntxiv muaj xws li:
Acid regeneration systems
Chlorinated tshuaj ntau lawm
Pharmaceutical intermediates
Zoo tshuaj synthesis
High -purity acid tuav
Hauv cov haujlwm no, kev sib xyaw ntawm cov tshuaj inertness thiab thermal efficiency tseem tseem ceeb heev.
Xaus
Tantalum heat exchangers ua lub luag haujlwm tseem ceeb hauv cov concentrated sulfuric acid txias tshuab thoob plaws hauv kev lag luam tshuaj. Lawv tsis kam mus rau corrosive acid kwj ntawm qhov kub siab tshaj 200℃tso cai rau kev nyab xeeb thiab txhim khu kev qha nyob rau hauv ib puag ncig uas feem ntau engineering hlau ua tsis tiav.
Cov txiaj ntsig kev ua tau zoo cuam tshuam nrog atantalum kub exchanger concentrated sulfuric acid txiassuav nrog tshwj xeeb corrosion kuj, compact thermal tsim, tsis kam rau sulfur trioxide- muaj cov kwj deg, thiab ruaj khov ntev - lub sij hawm tshav kub hloov efficiency. Nyias-walled tantalum tubing txuas ntxiv txhim kho kev sib pauv kev ua haujlwm thaum txo qis kev siv cov hlau tsis zoo no.
Txawm hais tias cov kev sib pauv no sawv cev rau kev nqis peev loj, lawv lub xyoo caum - kev ua haujlwm ntev thiab kev ntseeg tau ntawm cov txheej txheem ua rau lawv tseem ceeb hauv cov kua qaub rov qab thiab kev ua haujlwm sulfonation.
Hauv qee qhov chaw tshuaj lom neeg hnyav tshaj plaws uas tau ntsib hauv kev lag luam, cov cuab yeej siv tau zoo tshaj plaws yog feem ntau ua los ntawm cov hlau uas tsuas yog tsis kam ua.
