Txoj kev loj hlob ntawm electrolyzers

Qhov kev ncua deb ntawm cov cathode thiab cov anode yog ib qho tseem ceeb ntawm kev cuam tshuam cov cell voltage. Raws li tus ncej qhov sib txawv nce, lub ohmic voltage poob hauv lub tank nce thiab lub tank voltage nce. Tshwj xeeb tshaj yog thaum ua hauj lwm nrog high tam sim no, qhov no voltage poob yog loj dua. Niaj hnub nimno electrolyzers txais ntau yam kev ntsuas los txo tus ncej qhov sib nrug, xws li siv diffused anodes thiab hloov cov cais cais los tsim xoom ncej sib nrug electrolytic cell lug. Lub sij hawm nyob ntawm cov electrolyte nyob rau hauv lub electrolytic cell tsis tsuas yog cuam tshuam lub peev xwm ntawm cov khoom, tab sis kuj, nyob rau hauv tej rooj plaub, muaj feem xyuam rau cov efficiency tam sim no ntawm cov txheej txheem electrolysis. Piv txwv li, hauv kev tsim cov sodium chlorate los ntawm electrolysis, cov khoom nruab nrab hypochlorous acid (HClO) thiab hypochlorous acid yog cov tshuaj tiv thaiv ntawm chlorate ions (ClO3) qeeb heev. Yog tias sab laug hauv lub xovtooj ntawm electrolytic ntev, nws yuav tsis tsuas yog txo qhov kev siv ntawm cov electrolytic cell xwb, tab sis kuj yog cov hypochlorite ions yuav oxidized ntawm lub anode nto los yog txo rau ntawm cathode nto, txo cov efficiency tam sim no. . Yog li ntawd, niaj hnub electrolyzer tsim siv zog los txo qhov ntim thiab cia cov electrolyte ntws sai sai raws li cov electrodes. Yog tias xav tau cov tshuaj tiv thaiv ntxiv, lub tshuab hluav taws xob ywj pheej tuaj yeem raug ntsia sab nraum lub tshuab electrolyzer.
Cov electrodes nyob rau hauv lub electrolytic cell yog ntsia vertically kom ntau compact, cov conductive daim hlau yog ib qho yooj yim mus cuag, thiab nws yuav pab tau kom txo tau cov npuas nyhuv. Vim tias feem ntau muaj npuas nyob rau saum npoo ntawm cov electrode qhov twg cov pa tawm, nws yuav txo qhov chaw ua haujlwm ntawm cov electrode. Tsis tas li ntawd, cov tshuaj nyob ze ntawm lub electrode kuj tseem yuav muaj cov npuas, ua kom cov tshuaj tiv thaiv. Qhov tshwm sim no yog hu ua "cov nyhuv npuas". Txawm li cas los xij, nyob ze ntawm qhov ntsug electrode nto, cov yam ntxwv ntawm aeration siab, tsis tshua muaj kev daws teeb meem, thiab nrawm nrawm hauv cov tshuaj tuaj yeem siv los ua ib qho kev ncig ntawm cov electrolyte, ua kom cov npuas kom tawm hauv electrode nto, thiab txo cov npuas. nyhuv. Thaum lub ntsug electrode yog siv los ua cov roj electrode, cov duab ntawm cov electrode feem ntau yog mesh, uas tsis yog tsuas yog ua rau qhov chaw ua hauj lwm saum npoo av, tab sis kuj pab txhawb kev khiav tawm ntawm npuas.
Electrolytic cell cov ntaub ntawv tuaj yeem yog hlau, cement, ceramics, thiab lwm yam. Hlau yog alkali resistant thiab yog siv dav tshaj plaws. Rau corrosive electrolytes heev, sab hauv ntawm lub tank steel yuav tsum tau lined nrog txhuas, hluavtaws resin los yog roj hmab.
Tam sim no, electrolyzers tab tom txhim kho nyob rau hauv cov kev taw qhia ntawm lub peev xwm loj thiab kev siv hluav taws xob tsawg. Lub tshuab hluav taws xob bipolar yog tsim rau kev tsim khoom loj thiab tau siv los ntawm cov dej electrolysis thiab chlor-alkali industries.
Feem ntau cov electrolytic hlwb rau hydrogen ntau lawm los ntawm dej electrolysis siv hlau li cathode nto thiab npib tsib xee raws li anode nto nyob rau hauv ib tug series electrolytic cell (zoo li lub lim xovxwm) rau electrolyze aqueous daws ntawm caustic potassium los yog caustic soda. Oxygen los ntawm anode thiab hydrogen los ntawm cathode. Txoj kev no yog kim dua, tab sis cov khoom muaj purity siab thiab tuaj yeem tsim cov hydrogen ncaj qha nrog cov purity ntau dua 99.7%.