Hauv kev lag luam tsim khoom, kev xaiv ntawm cov ntaub ntawv muaj qhov cuam tshuam tseem ceeb rau ntau yam xws li ntau lawm kev ua haujlwm, khoom zoo, thiab khoom siv li sia. Hauv qhov teb tshwj xeeb ntawm urea ntau lawm, titanium alloy tau maj mam dhau los ua qhov tsis tseem ceeb vim nws cov kev hloov pauv tseem ceeb, nqa cov kev hloov pauv tseem ceeb thiab kev txhim kho kom urea ntau lawm.
Cov cai nruj yuav tsum muaj cov ntaub ntawv hauv ureah ntau lawm
Nyob rau hauv cov txheej txheem ntawm urea ntau lawm, cov kev tawm tsam ntawm kev hloov kho ammonium carbamate mus rau urea tsis tau ua tiav, thiab muaj kev sib xyaw muaj cov ammonia, thiab dej yuav tsim. Cov khoom noj muaj txiaj ntsig ntawm cov khoom lag luam ammonium carbamate carbamate muaj zog heev hauv qab qhov kub thiab cov kev mob siab. Qhov kev ua haujlwm hnyav no ua haujlwm tau cov khoom siv ntau dhau thiab cov khoom siv. Cov ntaub ntawv dog dig yog qhov nyuaj rau tiv thaiv ib puag ncig zoo li no thiab muaj kev puas tsuaj, uas nyob rau hauv lem cuam tshuam rau kev txuas ntxiv thiab nce nqi ntau lawm. Yog li ntawd, nrhiav cov khoom zoo tshaj plaws uas tuaj yeem hloov kho rau ib qho chaw tshwj xeeb no tau ua qhov teeb meem maj mam daws tau nyob hauv kev lag luam ntau lawm.
Cim tshwj xeeb ntawm titanium alloy hauv urea ntau lawm
Qhov laj thawj yog vim li cas titanium alloys tau tawm hauv thaj teb ntawm urea corrosion, nws txoj kev tawm tsam zoo tshaj plaws, nws txoj kev tiv thaiv zoo heev. Tus nqi corrosion ntawm stainless hlau yog ob npaug rau txhua 10℃nce hauv qhov kub. Thiab titanium alloy, txawm li cas los xij, yog tseem muaj peev xwm khaws nws cov tshuaj ruaj khov nyob rau hauv nruab nrab kev daws teeb meem zoo li ammonium carbamate, uas coj txog qhov txuas ntxiv rau kev pabcuam lub neej.
Tsis tas li ntawd, kev siv ntawm titanium alloys tau nqa ntau qhov yooj yim rau urea cov txheej txheem ntau lawm. Nyob rau hauv cov kub thiab siab mob, siv cov khoom siv titanium alloy tsis xav tau tshuab cov pa zoo li lwm yam khoom siv. Cov yeeb yam no tsis yog ua kom yooj yim ua cov txheej txheem kev ua haujlwm ntau dua thiab txo cov kev nyuaj, tab sis kuj txhim kho cov feem pua ntawm urthesis. Nyob rau tib lub sijhawm, vim yog qhov zoo hloov kho ntawm cov khoom siv titanium
Qhov kev thov dav ntawm titanium alloy hauv urea cov khoom siv
Daim Ntawv Thov Kev Ua Haujlwm hauv Tebchaws Meskas
Cov tuam txhab crucible crucible ntseeg hais tias los ntawm kev tshawb fawb uas titanium cov khoom siv tau txhim kho cov txheej txheem urea, vim titanium cov khoom tuaj yeem ua haujlwm ruaj khov ntawm qhov kub. Raws li cov kev nkag siab no, Titanium Tube Tshav Kub Kub Pauv thiab Titanium kav yog dav siv hauv cov kev ua haujlwm tsim urea. Cov cuab yeej titanium no tau daws tau cov teeb meem corrosion ntawm cov khoom siv hauv kev ruaj khov thiab kev ntseeg tau ntawm tag nrho urea prouress system.
Cov ntawv thov tshiab hauv Nyij Pooj
Nyob rau xyoo 1960, Mitsui Toho Chemical Company hauv Nyiv tshiab tsim kev pab cuam Titanium ua cov khoom siv urea ntau lawm. Tom qab ua kev sim ua kom muaj kev nkag siab dav dav thiab tau txais kev nkag siab tob tob ntawm cov corrosion tsis kam ntawm titanium, lub tuam txhab synthesis pej thuam thiab ntau yam khoom siv cuam tshuam. Qhov kev ntsuas no tau ua tiav cov txiaj ntsig tseem ceeb. Nyob rau hauv cov kub thiab siab mob, siv cov cuab yeej siv titanium lined tshem tawm cov pa oxygen rau cov khoom urygen hauv cov txheej txheem siab. Qhov no tsis tsuas yog txhim kho cov kev ua haujlwm zoo nkauj, tab sis kuj tseem ua rau cov khoom siv hluav taws xob yooj yim dua, ua rau muaj kev txhim kho tseem ceeb hauv qhov zoo tshaj plaws ntawm cov khoom lag luam tsim tawm. Nyob rau tib lub sijhawm, cov khoom siv tau kuj tau ntsuas dua. Cov kev paub dhau los ntawm Mitsui Toho Tshuaj Lub Tuam Txhab hauv Nyij Pooj tau ua rau cov kev cauj ntawm cov ntawv thov no thoob ntiaj teb.
Cov ntawv thov tsom rau hauv Ltalis
Nyob rau hauv cov txheej txheem urah synthesis, lub stripping ntauwd tsim los ntawm cov neeg tuam txhab Italian methane hlau taws kev nyuaj ntau ntau kev nyuaj ntau. Nyob rau hauv lub stripping ntauwd, urea yuav tsum tau sib cais los ntawm cov tshuaj tiv thaiv cov tshuaj tiv thaiv ntawm cov txheej txheem ntau lawm, thiab amines siv, uas ntxiv exacerbates corrosion. Txhawm rau daws cov teeb meem no, lub tuam txhab tau saws cov kev ua haujlwm ntawm cov pej thuam corrosion, thiab txhim kho kev sib cais ntawm cov pej thuam ua kom zoo, thiab cov khoom lag luam zoo ntawm urea ntau lawm.
Tuam Tshoj kev tshawb nrhiav thiab txhim kho
Thaum xyoo 1970, Tuam Tshoj tseem ua cov kev sib raug zoo hauv kev tsim khoom ntawm urea cov khoom siv cov khoom siv ntau lawm. Tuam Tshoj tau tsim thiab tsim tau 240000 TUJ CO2 stripping ntauwd rau urea, uas siv cov raj tawg, thiab muaj {4 4 s 31mm titanium hlab. Cov khoom siv tau muab tso rau hauv kev tsim khoom hauv xyoo 1979 thiab so haujlwm hauv xyoo 1987. Nws tau ua haujlwm rau 1310 hnub thiab tau dhau los 31440 teev ntawm cov tshuaj lom neeg. Lub sijhawm ua haujlwm yog qhov zoo, uas tau ua pov thawj kom muaj kev cia siab thiab ruaj khov ntawm titanium alloy hauv urea cov khoom siv khoom siv ntau lawm. Xyoo 1990, Tuam Tshoj tsim thiab tsim tau 400MM Titanium Kab Synthesis Ntauwd thiab muab tso rau hauv kev ua haujlwm hauv Anyang. Ntawm tib qho kev mob, tus nqi ntawm corrosion rau titanium yog qhov kev txiav txim siab tsawg dua li ntawm 316L cov khoom siv ntau dua, thiab nws tuaj yeem qhib cov khoom siv titanium ntau heev hauv Fi eld ntawm urd ntawm ura profess hauv Suav teb.
Tag
Hauv cov ntsiab lus, vim tias qhov zoo corrosion tsis kam thiab muaj kev ruaj khov ntawm urea, tab sis kuj txhawb txoj kev txhim kho urea Nrog kev txhim kho kev txuas ntxiv ntawm cov thev naus laus zis thiab kev txhim kho ntxiv ntawm cov kev ua tau zoo, yuav tsum muaj cov kev cia siab ntawm titagium alloys hauv antea kev lag luam thiab lwm daim teb yuav muaj dav dav.
Thov cov lus hais
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