Dab tsi yog electrolysis ntawm sodium chloride?
Electrolysis ntawm sodium chloride:
Cov tshuaj ntsev muaj ob peb ions xws li Na ntxiv , H-, thiab lwm yam raws li txoj kev xav ntawm electrolysis, thaum lub electrode raug muab tso rau hauv ib qho hluav taws xob, cov tshuaj electrolyte ua hluav taws xob vim qhov txav ntawm ions thiab cov tshuaj tiv thaiv electrode. Lub sijhawm no, Cl-, OH- Cov ions tsis zoo txav mus rau qhov anode, thaum cov ions zoo xws li Na ntxiv thiab H ntxiv txav mus rau cathode, thiab tso tawm tshwm sim ntawm cov khoom siv hluav taws xob sib xws, txhawm rau ua kom muaj cov tshuaj tiv thaiv redox thiab tsim cov khoom sib xws. .
Cathodic cov tshuaj tiv thaiv: 2Cl--2e=Cl2↑
Cov tshuaj tiv thaiv anode: 2Hntxivplus 2e=H2↑
Sodium chloride (NaCl) thiab dej (H2O) hauv cov tshuaj yog ionized. Tom qab hluav taws xob, hydrogen gas (H2) thiab chlorine gas (Cl2) yog tsim los ntawm cathode thiab anode raws. Qhov seem hydroxide ions thiab sodium ions ua ke los ua sodium hydroxide (NaOH). Electrolysis ntawm sodium chloride kua tshuaj tiv thaiv kab zauv:
2 NaCl plus 2H2O=2NaOH plus 2H2↑ 2 Cl2↑.
Electrolysis ntawm sodium chloride tsis muaj memebrane:
Thaum electrolysis tsis muaj daim nyias nyias yog siv nyob rau hauv kev lag luam, sodium chloride thiab sodium hypochlorite yuav raug generated vim kev sib cuag ntawm chlorine ions los yog chlorine gas nrog sodium hydroxide. Hauv electrolysis ntawm brine yam tsis muaj daim nyias nyias, tag nrho qhov sib npaug ntawm cov tshuaj yog NaCl ntxiv rau H2O + 2F → NaClO + H2↑ Qhov twg: F yog Faraday's electrolytic tas li, nws tus nqi yog 26.8A / h lossis 96487 coulombs.
Cov txheej txheem tsis muaj daim nyias nyias yog tsuas yog siv nyob rau hauv zus tau tej cov sodium hypochlorite generator rau electrolysis ntawm dilute brine. Lub tshuab hluav taws xob sodium hypochlorite yog tsim los ntawm electrolytic tank, silicon rectifier hluav taws xob tswj txee, ntsev dissolving tank, txias system thiab txhawb UPVC kav, li qub, dej injectors, flow meters, thiab lwm yam. Ntxiv 3 ~ 4 dilute ntsev tov rau hauv lub electrolytic cell, tig. ntawm 12V DC fais fab mov, thiab electrolyze los tsim sodium hypochlorite los ntawm kev kho cov electrolytic tam sim no, nqus thiab sib tov cov tshuaj tua kab mob los ntawm cov dej injector, los yog siv lub metering twj tso kua mis los ntsuas thiab xa cov tshuaj tua kab mob los ntawm lub tov khoom. Lub hauv paus tseem ceeb ntawm electrolytic cell yog titanium anode los ua ke. Feem ntau, cov anode thiab cathode yog coated, thiab cov txheej txheem electrode inversion raug saws. Nws yog dav siv hauv tsev kho mob dej tua kab mob, ua luam dej hauv pas dej da dej, tshuaj tua kab mob hauv tsev so, xim thiab tsw tshem tawm, tshuaj dawb thiab lwm yam.
Changsheng tuam txhab tam sim no muaj peev xwm tsim titanium electrode nrog 50g / h rau 5kg / h chlorine gas, uas tuaj yeem hloov kho thiab ua tiav raws li cov neeg siv khoom kos duab. Txais tos kom sab laj!
Electrolysis ntawm sodium chloride nrog membrane:
Cov sodium hydroxide (NaOH) uas tsim los ntawm kev lag luam chlor-alkali siv cov khoom siv hluav taws xob tshwj xeeb nrog cov ion txauv membrane (uas tsis tso cai rau cov tshuaj tsis zoo chloride ions lossis cov roj chlorine hla dhau) kom cais cov chloride ions lossis chlorine gas los ntawm sodium. hydroxide (NaOH).Ion-membrane txoj kev electrolyzer tuaj yeem tsim cov purity lye nrog li 35 feem pua sodium hydroxide, uas tuaj yeem siv ncaj qha los ua cov khoom lag luam, thiab tseem tuaj yeem ua rau 50 feem pua cov kua caustic soda los ntawm evaporator.
Cov tshuaj chlorine (Cl2) cov pa tawm ntawm lub chamber ntawm electrolytic hlwb yog ncaj qha txias los ntawm cov tshuaj tsuag dej los yog indirectly txias nyob rau hauv ib tug titanium txias, thiab ces qhuav nrog concentrated sulfuric acid nyob rau hauv ib tug series-txuas kom qhuav ntauwd kom tau cov raw khoom chlorine gas; Tom qab ntawd ntxiv compressed thiab liquefied Txias rau hauv kua chlorine.
Hydrogen (H2) yog siv los ua roj tom qab txias thiab lub cev qhuav dej, los yog qhuav thiab compressed thiab khaws cia rau hauv lub tog raj kheej steel (los yog los ntawm cov kav dej) ua cov khoom siv raw.
