Mokhoa oa Sodium Formate oa Oxalic Acid
Tlhahiso ea oxalic acid ka mokhoa oa sodium formate e arotsoe ka mokhoa oa lead le mokhoa oa calcium. Carbon monoxide e monngoa ke tharollo ea sodium hydroxide ho fumana sodium formate, ebe e tlosoa haeterojene ho etsa sodium oxalate. Ea morao e arabela le lead sulfate (mokhoa oa lead) kapa calcium hydroxide (mokhoa oa calcium) ho etsa lead oxalate precipitate kapa calcium oxalate precipitate, ebe e kenngoa acid ka sulfuric acid ho fumana oxalic acid.
Mokhoa oa loto bakeng sa tlhahiso ea oxalic acid: Kamora ho hlatsoa, ​​ho hlatsoa ka alkali, le ho tlosa lerōle, carbon monoxide e hatelloa ho 2 MPa ke compressor, ebe e futhumatsoa ho fihlela ho 150 °C ka 160 g/L sodium hydroxide, ebe e romeloa ho reactor ho etsa tharollo ea sodium formate e hlapolotsoeng. Tharollo e hatelloa ho fihlela ho 600 g/L, ebe e romeloa ketleleng ea dehydrogenation hore e futhumatsoe ebe e hatelloa ho ba tiileng, ebe e futhumatsoa le ho qhibilihisoa, ebe e tlosoa ho 400 °C. Sodium oxalate e sa haelloang e lokisoa ka ho kenngoa ka suspension, 'me lead sulfate e eketsoa ka tlas'a ho hlohlelletsoa ha e ntse e boloka pH ho 3-4. Litšila tse qhibilihang li tlosoa ka ho hlatsuoa, ebe sulfuric acid e feteletseng ea eketsoa bakeng sa acidification ho fumana tharollo ea oxalic acid. Barium carbonate le 1% polyacrylamide lia eketsoa bakeng sa ho kopana le sedimentation ho tlosa litšila. Tharollo e pholisitsoe, e kristaletsoa, ​​​​e sefshoa ka centrifugation, 'me ea omisoa ho fumana sehlahisoa se felileng.
Mokhoa oa calcium bakeng sa tlhahiso ea oxalic acid: Setlolo se lokisitsoeng sa sodium oxalate le setlolo sa calcium hydroxide lia lekanngoa ebe li romeloa ho reactor ea calciumization bakeng sa karabelo ea calciumization tlas'a ho hlohlelletsoa. ​​Mokelikeli oa calciumization o fumanoeng oa sefshoa le ho hlatsuoa. Filtrate sodium hydroxide e kopantsoe 'me e sebelisoa bakeng sa ho kopanya sodium formate, 'me calcium oxalate ea kaka ea sefshoa e sebelisoa bakeng sa karabelo ea acidification. Kaka ea sefshoa e lokisoa ka setlolo sa calcium oxalate, se kenngoang acid ka ketleleng ea acidification e nang le sulfuric acid le oxalic acid e kopantsoeng, ebe e sefshoa. Kaka ea sefshoa (gypsum) ea hlatsuoa, 'me mokelikeli oa ho hlatsoa o sebelisoa ho lokisa setlolo sa calcium oxalate. Filtrate (tharollo ea oxalic acid) e monngoa ho tlosa likaroloana tse ntle tsa calcium sulfate, e pholisitsoeng, e kristaletsoa, ​​​​e be e centrifuged ho arola oxalic acid e tala, e kenngoang recrystallized, e arotsoeng, 'me e omisoa ho fumana sehlahisoa se tšoanelehang, 'me joala ba' mè bo sebelisoa hape.
Mokhoa oa lead oa sodium formate o na le ts'ebetso e butsoitseng, boleng bo tsitsitseng ba sehlahisoa, le potoloho e khuts'oane ea tlhahiso, ka chai ea 80%–90% le bohloeki bo hloekisitsoeng ba oxalic acid ba 99.5%. Leha ho le joalo, ho na le tšilafalo ea loto ts'ebetsong ea tlhahiso, 'me sodium sulfate e fumanoeng ho tsoa karabelong e ke ke ea khutlisetsoa ts'ebetsong, kahoo bongata bo boholo ba sulfuric acid le caustic soda lia sebelisoa tlhahisong. Mokhoa oa calcium oa ho kopanya oxalic acid o ka felisa tšilafalo ea letsoai la loto le sodium sulfate metsing a ka tlas'a lefatše, 'me ho nkela caustic soda sebaka ka lime ho ka fokotsa litšenyehelo tsa tlhahiso haholo. CaSO4 ea sehlahisoa se seng se fumanoeng karabelong e ka sebetsoa ho ba thepa ea kaho ntle le tšilafalo. Ka nako e ts'oanang, joala ba 'm'e NaOH bo fumanoeng karabelong bo sebelisoa ho arabela le CO ho lokisa sodium formate, ka hona ho boloka bongata ba thepa e tala.

Shandong Pulisi Chemical Oxalic Acid: Melemo ea Bohlokoa
Asiti ea oxalic ea Shandong Pulisi Chemical (≥99.6% bohloeki, CAS 144-62-7) e hlahella ka litšila tse tlase haholo (sulfate ≤0.1%, litšepe tse boima ≤0.002%, tšepe ≤0.003%) le litifikeiti tsa ISO 9001, BV, REACH, FAMI-QS, tse netefatsang ho latela melao bakeng sa mebaraka ea lefats'e. Re tšehelitsoe ke boiphihlelo ba lilemo tse 18+ ba lik'hemik'hale, re fana ka litheko tse tobileng tsa fektheri, thepa ea setshelo se felletseng le matlo a polokelo ho pholletsa le Qingdao, Tianjin, likoung tsa Shanghai, le liphutheloana tse ikhethileng (25kg/50kg) bakeng sa ho romela kantle ho naha ntle le mathataShandong Pulisi Chemical Group. Asiti ea rona ea oxalic e ipabola ho rare earth metal precipitation, ho tlosa mafome a tšepe, ho daea masela le ho bentša 'mabole, e fana ka ts'ebetso e tsitsitseng le litharollo tse tsitsitseng, tse ka bolang bakeng sa bareki ba indasteri lefatšeng ka bophara.