Kune nzira mbiri dzeindasitiri yekugadziracaustic soda: causticization uye electrolysis. Iyo causticization nzira yakakamurwa kuita soda ash causticization nzira uye yakasikwa alkali causticization nzira zvinoenderana neyakasiyana mbichana; electrolysis nzira inogona kukamurwa kuita diaphragm electrolysis nzira uye ion exchange membrane nzira.
Soda ash causticization nzira: Soda ash uye lime zvinoshandurwa kuita soda ash solution uye madota anoshandurwa kuita lime mukaka zvakateerana. Iyo causticization reaction inoitwa pa99-101 ℃. Iyo causticization fluid inojekeswa, inoputika uye inonangana kune inodarika 40%. Liquid caustic soda. Iyo yakanyungudutswa mvura inowedzerwa uye yakasimbiswa kuti iwane yakasimba caustic soda yapera chigadzirwa. Madhaka anokonzeresa anogezwa nemvura, uye mvura yekugeza inoshandiswa kushandura alkali.
Trona causticization nzira: trona inopwanyika, yakanyungudutswa (kana alkali halogen), yakajekeswa, uyezve lime mukaka unowedzerwa kuti causticize pa 95 kusvika 100 ° C. Iyo causticized liquid inojekeswa, inoputika, uye yakanangidzirwa kune NaOH yepakati inosvika 46%, uye mvura yakajeka inotonhorera. , kunaya kwemunyu uye kuwedzera kufashaira kuisa pfungwa pakuwana solid caustic soda yapera chigadzirwa. Madhaka akakonzerwa anoshambidzwa nemvura, uye mvura yekugeza inoshandiswa kunyungudutsa trona.
Diaphragm electrolysis nzira: wedzera soda ash, caustic soda, uye barium chloride concentrate kubvisa tsvina yakaita secalcium, magnesium, uye sulfate ions mushure mekutanga salinized munyu, wobva wawedzera sodium polyacrylate kana causticized bran kujekesa tangi kuti ikurumidze kunaya, uye jecha filtration Pashure, hydrochloric asidhi inowedzerwa neutralization. Iyo brine inopisa uye inotumirwa ku electrolysis. Iyo electrolyte inopiswa, inoputika, yakapatsanurwa kuita munyu, uye kutonhodzwa kuti iwane liquid caustic soda, iyo inowedzerwa zvakare kuti iwane chakapedzwa chigadzirwa chesoda caustic soda. Mvura yekugeza dhaka remunyu inoshandiswa kunyungudutsa munyu.
Ion exchange membrane nzira: Mushure mekunge munyu wepakutanga washandurwa kuita munyu, brine inonatswa zvinoenderana nemaitiro echinyakare. Mushure mekunge brine yapepetwa kuburikidza ne microporous sintered carbon tubular sefa, inobva yanatswa zvakare kuburikidza ne chelating ion exchange resin tower kuti igadzire Kana calcium nemagnesium zviri mubrine zvinodonha pasi pe 0. 002%, iyo yechipiri yakanatswa brine inoiswa electrolyzed. kugadzira chlorine gasi mukamuri yeanode. Iyo Na+ iri mune brine mukamuri yeanode inopinda mukamuri ye cathode kuburikidza neiyo ion membrane uye iyo OH- mukamuri ye cathode inoburitsa sodium hydroxide. H + inoburitswa yakananga pane cathode kugadzira hydrogen gasi. Munguva ye electrolysis process, huwandu hwakakodzera hwepamusoro-kuchena hydrochloric acid inowedzerwa kune anode chamber kuti iite neutralize iyo yakadzoserwa OH-, uye iyo inodiwa yakachena mvura inofanirwa kuwedzerwa kune cathode chamber. Iyo yakakwirira-yakachena caustic soda inogadzirwa mukamuri yecathode ine musanganiswa we30% kusvika 32% (misa), iyo inogona kushandiswa zvakananga sechigadzirwa chealkali chemvura, kana inogona kuwedzeredzwa kuburitsa yakasimba caustic soda chigadzirwa.
Nguva yekutumira: Jul-12-2024
