Kev faib tawm thiab cov yam ntxwv ntawm titanium anodes
Titanium anode muaj qhov zoo conductivity thiab corrosion kuj, tus nqi qis, kev pab lub neej ntev dua li cov hlau lead anode, thiab tuaj yeem ua haujlwm ruaj khov rau ntau tshaj 4, 000 teev. Nws yog ib qho inevitable qauv nyob rau hauv txoj kev loj hlob ntawm electroplating zinc thiab tin ntau lawm nyob rau hauv tsev thiab txawv teb chaws. Titanium electrodes tam sim no siv nyob rau hauv Nyiv, Tebchaws Asmeskas, Lub Tebchaws Yelemees, thiab Tuam Tshoj. Lawv tsis tsuas yog txuag electroplating zog noj, tab sis kuj tsim cov kev mob rau zus tau tej cov tuab galvanized thiab tin steel daim hlau vim hais tias lawv muaj peev xwm ua kom cov electroplating tam sim no ceev.
Titanium anode tseem hu ua titanium-based hlau oxide coated titanium anode (MMO), los yog KSA anode, uas yog ib tug dimensionally thiab zoo li tus anode. Nws siv titanium ua lub substrate, thiab txhuam cov hlau muaj txiaj ntsig zoo ntawm titanium substrate kom nws muaj kev ua haujlwm zoo electrocatalytic thiab conductivity. Feem ntau, kev lag luam ntshiab titanium GR1 thiab GR2 yog siv.
Titanium anode kev faib tawm:
1. Nws yog qhov txawv raws li cov roj evolved ntawm lub anode thaum lub sij hawm cov tshuaj tiv thaiv electrochemical. Cov tshuaj chlorine-evolving anode uas precipitates chlorine gas yog hu ua chlorine-evolving anode, xws li ruthenium-coated titanium electrode. Ib qho uas precipitates oxidation yog hu ua oxygen-evolving anode, xws li iridium-coated titanium electrode thiab platinum-titanium mesh. / phaj.
Chlorine evolution anode (ruthenium-based coated titanium electrode): Cov electrolyte muaj cov ntsiab lus siab ammonia ion, uas feem ntau yog siv rau hauv ib puag ncig hydrochloric acid, electrolysis ntawm seawater thiab electrolysis ntawm ntsev dej. Cov ntaub ntawv khoom muaj xws li ruthenium-iridium-titanium anode thiab ruthenium-iridium-tin-titanium anode.
Oxygen evolution anode (iridium-coated titanium electrode): Cov electrolyte feem ntau yog ib puag ncig sulfuric acid. Cov ntaub ntawv khoom muaj xws li iridium-tantalum anode, iridium-tantalum-tin-titanium anode thiab high-iridium titanium anode.
2. Platinum-coated anode: titanium ua cov khoom siv hauv paus. Qhov saum npoo yog coated nrog platinum, thiab txheej thickness feem ntau yog 0.5-5μm. Lub mesh loj ntawm platinum titanium mesh feem ntau yog 12.5x4.5mm lossis 6 x 3.5mm.
Lub ntsiab nta ntawm ruthenium-iridium chlorine-evolving titanium anode rau hydrogen-alkali kev lag luam:
1. Qhov loj ntawm anode yog qhov ruaj khov thiab qhov sib txawv ntawm electrode tsis hloov thaum lub sij hawm electrolysis, uas ua kom ntseeg tau tias kev ua haujlwm ntawm electrolysis yog nqa tawm nyob rau hauv cov xwm txheej ntawm cov cell voltage.
2. Kev ua haujlwm tsis tshua muaj hluav taws xob, kev siv hluav taws xob me me, thiab tuaj yeem txo qis kev siv hluav taws xob li ntawm 20 feem pua.
3. Titanium anodes muaj lub neej ua haujlwm ntev. Hauv kev lag luam chlorine ntau lawm siv txoj kev diaphragm, coated titanium anodes yog resistant rau corrosion los ntawm chlorine thiab alkali.
4. Nws tuaj yeem kov yeej qhov teeb meem ntawm kev tawg ntawm graphite anode thiab txhuas anode, tsis txhob kis cov khoom siv electrolyte thiab cathode, thiab txhim kho cov khoom zoo.
5. Muaj peev xwm nce qhov ceev tam sim no. Piv txwv li, hauv kev tsim cov tshuaj chlor-alkali los ntawm txoj kev diaphragm, qhov ceev tam sim no ntawm graphite electrode yog 8A / dm2, thiab titanium anode tuaj yeem ua ob npaug rau 17A / dm2. Nyob rau hauv txoj kev no, cov zis tuaj yeem muab faib ua ob npaug hauv cov ntaub ntawv ntawm tib cov nroj tsuag electrolytic thiab cov hlwb electrolytic.
6. Nws muaj zog corrosion kuj thiab muaj peev xwm ua hauj lwm nyob rau hauv ntau electrolytic xov xwm uas yog heev corrosive thiab muaj tshwj xeeb yuav tsum tau.
7. Nws tuaj yeem zam qhov teeb meem luv luv tom qab cov hlau lead anode deformed, yog li kev txhim kho tam sim no efficiency.
8. Cov khoom siv hauv titanium tuaj yeem siv ntau zaus.
