Hydrogen ntau lawm los ntawm electrolysis dej, tshwj xeeb tshaj yog siv lub zog tauj dua tshiab, yog tam sim no cov txheej txheem carbon emission qis tshaj ntawm ntau qhov chaw hydrogen, tseem hu ua "ntsuab hydrogen". Tam sim no, plaub lub thev naus laus zis yog siv rau kev tsim cov hydrogen los ntawm cov dej electrolytic: alkaline dej (AKL) electrolysis technology, proton exchange membrane (PEM) electrolysis technology, solid oxide (SOEC) electrolysis technology and basic anion exchange membrane (AEM) electrolysis technology. Ntawm lawv, SOEC thev naus laus zis thiab AEM thev naus laus zis tseem nyob hauv chav kuaj, tsuas muaj ob peb qhov kev sim ua haujlwm ntawm kev ua lag luam, nws tsis tuaj yeem lees paub tias ob lub thev naus laus zis muaj lawv cov txiaj ntsig zoo, tab sis tseem muaj txoj hauv kev ntev mus los ntawm kev lag luam. Laboratory rau loj-scale siv ntau lawm.
Tam sim no, daim ntawv thov loj heev ntawm qhov project electrolyzer yog alkaline electrolyzer thiab PEM electrolyzer, nyob rau hauv Suav teb, alkaline electrolyzer account rau ntau tshaj 90%, thiab nyob rau txawv teb chaws, PEM electrolyzer yog lub ntsiab. Qhov tseeb, PEM electrolyzers yog cov thev naus laus zis ntau dua li alkaline electrolyzers.
Ua ntej ntawm tag nrho cov, thev naus laus zis ntawm alkaline electrolyzer tau paub tab heev, thiab lub peev xwm tsim khoom ntawm cov cuab yeej suav nrog 1-2000Nm³ / h, uas tsis tshua muaj kev tsim khoom nyuaj thiab yooj yim siv. Kev siv thev naus laus zis ntau dua ntawm PEM electrolyzer txhais tau tias PEM electrolyzer muaj ntau dua tsim, ntau lawm thiab siv nyuaj, thiab cov peev txheej ntawm PEM electrolyzer loj tshaj plaws tsuas yog 200Nm³ / h, uas nyuaj rau ua kom tau raws li qhov xav tau ntawm ntsuab hydrogen nyob rau hauv lub yav tom ntej ua ntej qhov teeb meem loj yuav daws tau. Qhov thib ob, los ntawm tus nqi ntawm qhov pom, lub cathode ntawm PEM electrolyzer yuav tsum tau siv cov hlau zoo nkauj iridium, thiab cov anode xav tau cov hlau zoo nkauj platinum. Nyob rau hauv cov nqe lus ntawm iridium ib leeg, raws li tam sim no cathode iridium load ntawm 2-5mg / cm2, 1 ton ntawm iridium hlau tsuas yog muab 1GW ntawm PEM electrolytic cell ntsia muaj peev xwm, thiab txhua xyoo tso zis ntawm iridium tsuas yog 5 tons. Hloov mus rau ib qho khoom siv, 200Nm³ / h PEM electrolyzer xav tau 1Kg ntawm iridium, raws li tus nqi lag luam tam sim no ntawm $ 203 / g, tus nqi ntawm iridium ib leeg yog $ 200, 000. Cov electrode ntawm alkaline electrolyzer feem ntau yog npib tsib xee hlau, tus nqi qis heev, thiab tag nrho cov nqi ntawm alkaline electrolyzer tsuas yog ib feem peb ntawm PEM electrolyzer.
Nyob rau hauv cov nqe lus ntawm kev ua tau zoo, alkaline electrolyzer thiab PEM electrolyzer muaj qhov sib txawv me ntsis ntawm cov khoom siv hluav taws xob hydrogen, kev siv hluav taws xob thiab kev ua haujlwm, thiab muaj qhov sib txawv tseem ceeb hauv qhov ceev tam sim no thiab lub sijhawm pib. Qhov ceev tam sim no ntawm cov tsoos alkaline electrolyzer feem ntau tsuas yog 2000-3000A / m2, thaum qhov ceev tam sim no ntawm PEM electrolyzer feem ntau yog ntau tshaj 10000A / m2. Qhov ceev dua tam sim no txhais tau hais tias qhov ntim ntawm PEM electrolyzer yog me dua thiab nyob hauv ib cheeb tsam me me nyob rau hauv tib lub hydrogen ntau lawm. Thaum tshav kub kub ntau lawm ntawm electrolyzer yog sai dua tom qab qhov ceev tam sim no ntawm PEM electrolyzer yog nce. Nrog tsawg lub sij hawm kom ncav cuag qhov kub thiab txias, lub sij hawm pib txias yog luv dua.
Txawm li cas los xij, nrog kev txhim kho thev naus laus zis, qhov ceev tam sim no thiab lub sijhawm pib ntawm alkaline electrolyzers tau raug txhim kho ntxiv.
