Litaba - Mokhoa oa ho etsa caustic soda
litaba

litaba

Ho na le mekhoa e 'meli ea indasteri ea ho hlahisasoda le ho feta: causticization le electrolysis. Mokhoa oa causticization o arotsoe ka mokhoa oa soda ash causticization le mokhoa oa tlhaho oa alkali causticization ho latela lisebelisoa tse sa tšoaneng tse tala; mokhoa oa electrolysis o ka aroloa ka mokhoa oa diaphragm electrolysis le mokhoa oa ion exchange membrane.
Soda ash causticization method: Soda molora le lime li fetoloa molora oa soda le molora o fetoloa lebese la lime ka ho latellana. Karabelo ea causticization e etsoa ho 99-101 ℃. Mokelikeli oa causticization oa hlakisoa, oa fetoha mouoane 'me o tsepamisitsoe ho feta 40%. Mokelikeli oa caustic soda. Mokelikeli o kentsoeng o kenngoa hape 'me oa tiisoa ho fumana sehlahisoa se felileng sa caustic soda. Seretse se bakang metsi se hlatsuoa ka metsi, 'me metsi a ho hlatsoa a sebelisetsoa ho fetola alkali.
Mokhoa oa Trona causticization: trona e pshatlehile, ea qhibiliha (kapa alkali halogen), e hlakisoa, ebe lebese la lime le kenngoa ho causticize ho 95 ho 100 ° C. Mokelikeli oa causticized oa hlakisoa, oa fetoha mouoane, 'me o lebisitsoe ho motsoako oa NaOH oa hoo e ka bang 46%, 'me metsi a hlakileng aa pholile. , letsoai le pula le ho bela ho eketsehileng ho tsepamisa mohopolo ho fumana sehlahisoa se felileng sa soda le ho feta. Seretse sa causticized se hlatsuoa ka metsi, 'me metsi a ho hlatsoa a sebelisetsoa ho qhaqha trona.
Diaphragm electrolysis mokhoa: eketsa soda molora, caustic soda le barium chloride concentrate ho tlosa litšila tse kang k'halsiamo, magnesium, le ion sulfate ka mor'a letsoai la pele letsoai, 'me joale eketsa sodium polyacrylate kapa causticized bran ka tanka ea tlhakiso ho potlakisa pula, le lehlabathe filtration Ka mor'a moo, hydrochloric acid e eketsoa bakeng sa neutralization. The brine ke preheated le romelwa ho electrolysis. Electrolyte e futhumatsoa pele, e fetoha mouoane, e aroloe ka matsoai, 'me e pholisoe ho fumana mokelikeli oa caustic soda, e leng e tsitsitseng hape ho fumana sehlahisoa se felileng sa caustic soda e tiileng. Metsi a hlatsoang seretse sa letsoai a sebelisetsoa ho qhibilihisa letsoai.
Mokhoa oa phapanyetsano ea Ion: Ka mor'a hore letsoai la pele le fetohe letsoai, brine e hloekisoa ho latela mokhoa oa setso. Ka mor'a hore brine e ka sehloohong e sefshoe ka "microporous sintered carbon tubular filter", e ntan'o hloekisoa hape ka chelating ion exchange resin tower ho etsa Ha khalsiamo le magnesium e ka har'a brine e theoha ka tlase ho 0.002%, brine ea bobeli e hloekisitsoeng e sebelisoa ke electrolyzed. ho hlahisa khase ea chlorine ka kamoreng ea anode. The Na + ka brine ka kamoreng ea anode e kena ka kamoreng ea cathode ka lera la ion 'me OH- ka kamoreng ea cathode e hlahisa sodium hydroxide. H + e ntšoa ka kotloloho ho cathode ho hlahisa khase ea hydrogen. Nakong ea ts'ebetso ea electrolysis, palo e loketseng ea bohloeki bo phahameng ba hydrochloric acid e eketsoa ka kamoreng ea anode ho fokotsa OH-e tlositsoeng, 'me metsi a hloekileng a hlokahalang a lokela ho ekeletsoa kamoreng ea cathode. Soda e phahameng ea bohloeki e hlahisoang ka phaposing ea cathode e na le mohopolo oa 30% ho isa ho 32% (boima), e ka sebelisoang ka kotloloho e le sehlahisoa sa alkali sa mokelikeli, kapa se ka kenngoa ka ho eketsehileng ho hlahisa sehlahisoa se tiileng sa caustic soda.

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Nako ea poso: Jul-12-2024