Vim li cas titanium anodes tuaj yeem txuag nqi?
Nyob rau hauv lub zog noj toj roob hauv pes ntawm kev lag luam electrolysis, kev xaiv ntawm cov khoom siv anode ncaj qha txiav txim siab qhov sib npaug ntawm cov nqi tsim khoom thiab kev ua haujlwm. Traditional anode cov ntaub ntawv xws li graphite thiab txhuas alloys, thaum pib ua lag luam vim lawv cov nqi qis, tau maj mam raug txiav tawm vim lawv lub zog siv zog, luv luv lifespan, thiab susceptibility rau cov pa phem, uas tau tsav los ntawm kev xav tau kev kho dua tshiab. Titanium anodes, nrog rau lawv cov khoom tsim tshwj xeeb thiab cov khoom siv hluav taws xob, ua kom pom qhov zoo ntawm kev txo qis kev siv hluav taws xob, ncua kev ua neej, thiab txo cov pa phem, dhau los ua qhov tseem ceeb rau kev txo nqi thiab kev txhim kho hauv kev lag luam electrolysis.
Lub zog-txuag kom zoo dua ntawm titanium anodes feem ntau yog tshwm sim hauv lawv qhov kev ua haujlwm qis. Ib txwm graphite anodes, vim lawv cov conductivity tsis zoo thiab yooj yim dissolution thaum lub sij hawm electrolysis, feem ntau ua rau siab cell voltages. Piv txwv li, nyob rau hauv chlor-alkali kev lag luam, lub cell voltage ntawm graphite anodes feem ntau yog tuav ntawm 3.8-4.2V, thaum titanium anodes, los ntawm txheej txheej nrog platinum pawg hlau oxides (xws li RuO₂-IrO₂{10}T), txo voltage 3.2 - 3.5V. Qhov kev poob qis no, tab sis zoo li me me, txhais tau tias txo qis ntawm kwv yees li 30 kWh hauv DC fais fab noj ib tuj ntawm caustic soda thaum lub sij hawm loj-scale electrolysis ntau lawm, txawm tias yuav txo tau 0.1V. Rau cov nroj tsuag chlor-alkali uas muaj peev xwm txhua xyoo ntawm 100,000 tons, qhov no ib leeg tuaj yeem txuag tau tshaj kaum lab yuan hauv cov nqi hluav taws xob txhua xyoo. Qhov tseem ceeb tshaj, cov txheej txheem txheej txheej ntawm titanium anode optimizes electron thauj txoj hauv kev, uas ua rau muaj kev faib tawm ntau dua tam sim no thiab tiv thaiv lub zog poob vim qhov chaw overheating, ntxiv kev txhim kho lub zog.
Lub neej ntev ntev yog lwm qhov tseem ceeb hauv kev txo cov nqi tag nrho ntawm titanium anodes. Graphite anodes feem ntau muaj lub neej ntev ntawm 8-12 lub hlis hauv kev lag luam chlor-alkali, thaum titanium anodes tuaj yeem kav ntev dua 6 xyoo. Qhov sib txawv ntawm kev ua neej nyob no tshwm sim los ntawm qhov sib txawv hauv kev tiv thaiv corrosion: graphite anodes tsis tu ncua yaj thaum lub sij hawm electrolysis, ua rau cov electrode me me me me thiab nws thiaj li ua rau tsis ua hauj lwm vim qhov sib nrug ntau dhau; titanium anodes, ntawm qhov tod tes, tswj cov qauv kev ruaj ntseg hauv cov xov xwm corrosive heev ua tsaug rau qhov ntom ntom TiO₂ passivation zaj duab xis tsim rau ntawm titanium substrate nto. Txawm tias nyob rau hauv lub sij hawm ntev ua hauj lwm nyob rau hauv high tam sim no ntom (17 A / dm²), lub txheej yuav tsis tev tawm los yog tsis. Cov ntaub ntawv sib piv los ntawm lub tuam txhab petrochemical qhia tau hais tias tom qab siv titanium anodes, zaus ntawm kev hloov pauv ntawm anode hauv cov hluav taws xob hluav taws xob txo qis los ntawm plaub zaug hauv ib xyoos mus rau ib xyoos ib zaug, txo cov nqi txij nkawm los ntawm 85% thiab zam kev cuam tshuam ntau lawm vim kev poob qis rau kev hloov pauv.
Kev tswj cov pa phem thiab txhim kho cov khoom purity yog qhov txiaj ntsig zoo ntawm titanium anodes hauv kev txo cov nqi. Ib txwm siv lead ua alloy anodes yaj cov hlau lead ions thaum lub sij hawm electrolysis, paug cov electrolyte thiab tso rau hauv cov khoom cathode, ua rau txo qis purity ntawm cov khoom hlau. Piv txwv li, nyob rau hauv cov txheej txheem electrolytic zinc, txhuas ions yaj los ntawm cov hlau lead anodes tuaj yeem txo cov zinc purity qis dua 99.5%, uas yuav tsum tau ua kom muaj cov txheej txheem purification ntxiv, nce tus nqi purification los ntawm kwv yees li 200 yuan ib tuj zinc. Titanium anodes kom zam qhov teeb meem no. Lawv cov txheej txheem muaj cov tshuaj lom neeg ruaj khov heev, ua rau tsis muaj qhov tsis huv, kom ntseeg tau tias qhov purity ntawm cov khoom cathode tuaj yeem ncav cuag ntau dua 99.99%, ncaj qha ua tau raws li qhov xav tau ntawm siab -kev tsim khoom kawg thiab tshem tawm qhov xav tau rau cov kauj ruam tom ntej. Hauv kev lag luam electroplating, tus yam ntxwv ntawm titanium anodes yog qhov tseem ceeb tshaj - tom qab siv titanium anodes, qee lub tuam txhab tsheb tau pom 30% kev txhim kho hauv txheej txheej, qhov txo qis ntawm 5% mus rau 0.5%, thiab 15% txo cov nqi khoom.
Tus nqi -txo cov nyhuv ntawm titanium anodes kuj tshwm sim nyob rau hauv lawv cov qauv adaptability. Los ntawm kev tsim cov duab zoo nkauj (xws li mesh, tubular, thiab sawb), titanium anodes tuaj yeem ua tau raws li qhov xav tau ntawm qhov sib txawv electrolysis scenarios. Piv txwv li, nyob rau hauv lub tshav pob ntawm phab ntsa tiv thaiv corrosion, titanium sawb anodes tuaj yeem khoov rau hauv lub nplhaib kom haum lub tank phab ntsa, tsim kev tiv thaiv kev tiv thaiv los ntawm kev tso tawm tam sim no, tiv thaiv pitting corrosion ntawm phab ntsa sab hauv, thiab txuas lub neej ntawm lub tank mus rau ntau tshaj 20 xyoo; Hauv dej electrolysis hydrogen cov cuab yeej tsim khoom, cov qauv tubular ntawm titanium raj anodes ua kom yooj yim rau kev khiav tawm ntawm cov pa, txo qhov kev hloov pauv hluav taws xob los ntawm cov npuas npuas, thiab txhim kho cov khoom siv hydrogen ntau dua 10%. Qhov kev hloov ntawm cov qauv no tsis yog tsuas yog txo cov nqi hloov khoom siv xwb tab sis kuj txo qhov kev pheej hmoo ntawm kev poob qis los ntawm kev txhim kho kev ruaj ntseg.
Los ntawm chlor-alkali kev lag luam mus rau electroplating metallurgy, los ntawm kev kho dej khib nyiab mus rau lub zog tshiab hydrogen ntau lawm, titanium anodes yog reshaping tus nqi qauv ntawm kev lag luam electrolysis los ntawm kev siv technology tshiab. Nws cov txiaj ntsig tseem ceeb ntawm qhov tsis tshua muaj hluav taws xob, lub neej ntev, thiab xoom paug tsis yog tsuas yog txo qis kev siv hluav taws xob thiab kev saib xyuas tus nqi, tab sis kuj tseem cuam tshuam los tsim cov nqi ntxiv los ntawm kev txhim kho cov khoom purity thiab ntau lawm efficiency. Nrog rau kev txhim kho txuas ntxiv ntawm cov txheej txheem hlau muaj nuj nqis (xws li kev tsim qauv nanostructure thiab tsis yog- cov khoom siv hlau zoo), cov nqi ntawm titanium anodes xav tias yuav txo qis ntxiv, ua rau kev lag luam electrolysis mus rau kev ua haujlwm zoo dua thiab kev phooj ywg ib puag ncig. Hauv cov ntaub ntawv hloov pauv no, titanium anodes tsis yog "hloov pauv," tab sis "yuav tsum-muaj" rau kev lag luam electrolysis kom ua tiav kev hloov pauv ntsuab.
