Tshwj xeeb zoo ntawm Titanium Alloys hauv Urea Production

Hauv kev tsim khoom, kev xaiv cov khoom tseem ceeb cuam tshuam rau kev tsim khoom, cov khoom zoo, thiab cov cuab yeej siv tau ntev. Nyob rau hauv qhov chaw tshwj xeeb ntawm urea ntau lawm, titanium alloys tau tshwm sim los ua cov ntaub ntawv tseem ceeb vim lawv qhov kev ua tau zoo tshwj xeeb, coj cov kev hloov pauv tseem ceeb thiab kev txhim kho rau cov txheej txheem.

Cov kev xav tau ntawm Urea Production Environments
Thaum lub sij hawm urea ntau lawm, kev hloov pauv ntawm ammonium carbamate rau urea tsis tiav, ua rau muaj kev sib xyaw uas muaj urea, tshaj ammonia, thiab dej. Cov tshuaj ammonium carbamate nruab nrab pom muaj qhov ua kom tsis zoo nyob rau hauv qhov kub thiab txias. Cov kev ua haujlwm hnyav no ua rau muaj kev xav tau siab heev ntawm cov khoom siv ntau lawm. Cov ntaub ntawv zoo tib yam tawm tsam kom tiv taus qhov kev tiv thaiv corrosion hnyav, feem ntau ua rau muaj kev puas tsuaj uas cuam tshuam kev tsim khoom txuas ntxiv thiab ruaj khov thaum nce nqi ua haujlwm. Yog li ntawd, kev txheeb xyuas cov khoom siv zoo tshaj plaws uas muaj peev xwm tiv taus cov xwm txheej tshwj xeeb no tau dhau los ua qhov tseem ceeb rau kev lag luam urea ntau lawm.

Tshwj xeeb zoo ntawm Titanium Alloys hauv Urea Production
Titanium alloys tau txais qhov tseem ceeb hauv urea ntau lawm vim lawv qhov tshwj xeeb corrosion kuj. Siv cov hlau tsis muaj hlau ua piv txwv: thaum nws pom zoo tiv thaiv urea corrosion ntawm qhov kub thiab txias, nws cov corrosion kuj poob qis heev thaum kub nce. Rau txhua txhua 10 ° C nce nyob rau hauv qhov kub thiab txias, tus nqi corrosion ntawm stainless hlau ob npaug. Hauv qhov sib piv, titanium alloys tuav cov khoom ruaj khov txawm tias nyob rau hauv qhov chaw kub kub, tiv thaiv corrosion los ntawm kev tshaj tawm xws li ammonium carbamate daws thiab txuas ntxiv cov cuab yeej siv tau ntev. Tsis tas li ntawd, kev siv cov titanium alloys coj ntau yam kev ua haujlwm zoo rau cov txheej txheem urea ntau lawm. Nyob rau hauv qhov kub thiab txias, cov khoom siv titanium alloy tshem tawm qhov xav tau ntawm cov pa purging uas xav tau los ntawm lwm cov ntaub ntawv. Cov yam ntxwv no tsis tsuas yog ua kom yooj yim rau kev tsim khoom thiab txo kev ua haujlwm nyuaj tab sis kuj tseem txhim kho urea synthesis tus nqi. Tsis tas li ntawd, titanium alloy cov cuab yeej ua tau zoo tshaj plaws rau cov kev mob hnyav ua rau cov khoom siv loj dua tsim, ntxiv dag zog rau kev tsim muaj peev xwm thiab kev ua haujlwm zoo thaum txhim kho cov khoom zoo ntawm urea.

Kev siv dav dav ntawm Titanium Alloys hauv Urea Cov Khoom Siv Ntau Lawm

Teb Chaws Asmeskas Kev Ua Haujlwm
American Crucible Company kev tshawb fawb qhia tias cov khoom siv titanium txhim kho cov txheej txheem urea vim nws txoj haujlwm ruaj khov ntawm qhov kub thiab txias. Raws li qhov kev nkag siab no, titanium plhaub-thiab-tube kub exchangers thiab titanium piping yog feem ntau ua hauj lwm nyob rau hauv urea ntau lawm cov nroj tsuag. Cov titanium Cheebtsam no zoo daws teeb meem corrosion nyob rau hauv high-temperature ib puag ncig, kom ntseeg tau tias uninterrupted ntau lawm thiab txhim kho tag nrho cov stability thiab kev cia siab ntawm lub urea ntau lawm system.

Cov ntawv thov tshiab hauv Nyij Pooj
Nyob rau xyoo 1960, Mitsui Tōatsu Chemicals Co., Ltd. tau pib siv cov titanium los ua cov khoom siv hauv ob sab phlu rau cov khoom siv urea. Los ntawm kev sim dav dav kom nkag siab zoo txog titanium qhov kev tiv thaiv corrosion, lub tuam txhab tau txais titanium rau urea synthesis towers thiab cov cuab yeej cuam tshuam. Qhov kev pib no tau txais txiaj ntsig zoo tshaj plaws: nyob rau hauv qhov kub thiab txias, kev siv cov khoom siv titanium-lined tshem tawm qhov xav tau ntawm oxygen purging hauv high-pressure urea units. Qhov no tsis tsuas yog nce synthesis tus nqi tab sis kuj ua kom yooj yim cov cuab yeej ua haujlwm, txhim kho cov khoom lag luam zoo, thiab ua kom cov khoom siv loj dua tsim. Mitsui Toyo Chemical txoj kev vam meej tau coj mus rau thoob ntiaj teb kev saws me nyuam txoj kev thov no.

Targeted Application hauv ltalis
Nyob rau hauv cov txheej txheem urea synthesis, lub stripping ntauwd tsim los ntawm Ltalis National Methane Pipeline Tuam Txhab tau ntsib cov teeb meem corrosion hnyav dua. Nyob rau hauv cov stripping yees, urea yuav tsum tau muab cais los ntawm cov tshuaj tiv thaiv byproducts siv amines, ntxiv exacerbating corrosion. Txhawm rau hais txog qhov no, lub tuam txhab tau txais titanium rau lub stripping ntauwd, zoo daws teeb meem corrosion, ua kom ruaj khov, thiab txhim kho kev sib cais thiab cov khoom zoo hauv urea ntau lawm.

Tuam Tshoj Kev Tshawb Fawb thiab Kev Txhim Kho
Nyob rau hauv thaum ntxov 1970s, Tuam Tshoj kuj tau ua tiav qhov tseem ceeb ntawm kev tsim cov khoom siv urea ntau lawm. Lub teb chaws tsim thiab tsim ib tug 240,000-tuj urea carbon dioxide stripping ntauwd featuring explosion-bonded titanium-steel daim hlau rau nws lub taub hau, ncaj seem, thiab sab sauv / qis raj ntawv, sab hauv haum nrog 1,361 Titanium Tubes ntsuas 31mm x 31mm. Commissioned nyob rau hauv 1979 thiab decommissioned nyob rau hauv 1987, lub tsev ua hauj lwm rau 1,310 hnub, accumulating 31,440 teev ntawm tshuaj ntau lawm nrog feem ntau txaus siab. Qhov no qhia tau hais tias muaj kev ntseeg siab thiab ua haujlwm ntev ntawm titanium alloys hauv cov khoom siv urea. Xyoo 1990, Tuam Tshoj tsim thiab tsim 400mm titanium-lined synthesis ntauwd, uas tau pib ua haujlwm hauv Anyang. Raws li cov xwm txheej sib npaug, titanium nthuav tawm tus nqi corrosion ib qho kev txiav txim siab qis dua 316L stainless hlau thaum ua haujlwm ntawm qhov kub siab dua. Qhov no muab cov txiaj ntsig tseem ceeb ntawm kev lag luam los ntawm kev txo qis hluav taws xob, chav dej, thiab kev siv dej, ntxiv rau kev tsav tsheb thiab kev txhim kho ntawm titanium alloys hauv Suav teb urea ntau lawm sector.

Xaus
Hauv cov ntsiab lus, titanium alloys tau txais kev siv dav hauv urea ntau lawm vim lawv cov kev tiv thaiv corrosion zoo dua thiab ruaj khov nyob rau hauv qhov kub thiab txias, siab-siab. Los ntawm Tebchaws Meskas, Nyiv, thiab Ltalis mus rau Tuam Tshoj, kev siv cov titanium alloys hauv cov khoom siv urea tau txais txiaj ntsig zoo thoob plaws tebchaws. Qhov no tsis tau tsuas yog txhim kho kev tsim khoom thiab cov khoom lag luam zoo thaum txo cov nqi tab sis tseem txhawb nqa kev nce qib hauv urea ntau lawm technology. Nrog rau kev nce qib ntawm cov thev naus laus zis tsis tu ncua thiab cov khoom siv ua tau zoo zuj zus ntxiv, daim ntawv thov kev cia siab rau titanium alloys hauv urea ntau lawm thiab lwm yam kev lag luam yuav txuas ntxiv.