Indlela ye-Sodium Formate ye-Oxalic Acid
Ukukhiqizwa kwe-oxalic acid ngendlela ye-sodium formate kuhlukaniswe kwaba yindlela yomthofu kanye nendlela ye-calcium. I-carbon monoxide idonswa sisombululo se-sodium hydroxide ukuthola i-sodium formate, ebese i-dehydrogenated ukwakha i-sodium oxalate. Lokhu kokugcina kuhlangana ne-lead sulfate (indlela ye-lead) nofana i-calcium hydroxide (indlela ye-calcium) ukwakha i-lead oxalate precipitate nofana i-calcium oxalate precipitate, ebese yenziwa i-asidi nge-sulphuric acid ukuthola i-oxalic acid.
Indlela yokukhiqiza i-oxalic acid: Ngemva kokuhlanza, ukuhlanza i-alkali, nokususa ithuli, i-carbon monoxide icindezelwa ibe yi-2 MPa nge-compressor, ifuthunyelwe ibe yi-150 °C nge-160 g/L ye-sodium hydroxide, bese ithunyelwa e-reactor ukobana kwenziwe isisombululo se-sodium formate esihlanjululweko. Isixazululo sihlanganiswa sibe ku-600 g/L, sithunyelwe eketheleni lokukhipha amanzi ukuze sifuthumele begodu sihlanganiswe sibe yinto eqinileko, bese sitjhiswa begodu sincibilikiswe, bese sikhipha amanzi ku-400 °C. I-sodium oxalate ene-dehydrogenated ilungiswa ibe yi-suspension, bese i-lead sulfate ifakwa ngaphasi kokuvuselela ngesikhathi kugcinwa inani le-pH ku-3-4. Ukusilaphazeka okuncibilikako kususwa ngokugeza, bese kuthi i-sulfuric acid enengi ifakwe ukwenza i-asidi ukuthola isisombululo se-oxalic acid. I-barium carbonate kanye ne-1% ye-polyacrylamide kufakwa ukobana kuhlanganiswe begodu kube yi-sedimentation ukususa ukusilaphazeka. Isisombululo siyapholiswa, sibe yikristalu, sihlungwe ngokusebenzisa i-centrifugation, bese somiswa ukuthola umkhiqizo opheleleko.
Indlela ye-calcium yokukhiqiza i-oxalic acid: I-sodium oxalate suspension elungiselelweko kanye ne-calcium hydroxide suspension kuyalinganiswa bese kuthunyelwa e-reactor yokukhiqiza i-calcium ukuze kube ne-calciumization reaction ngaphasi kokuvuselela. Uketshezi olutholiwe lwe-calcium luyahlungwa bese luhlanzwa. I-filtrate ye-sodium hydroxide ihlanganiswe begodu isetjenziselwa ukwenza i-sodium formate, begodu i-filter cake calcium oxalate isetjenziselwa ukuphendula kwe-asidi. Ikhekhe lokuhlunga lilungiswa libe yi-calcium oxalate suspension, elifakwe i-esidi ngaphakathi kweketele lokukhiqiza i-asidi nge-sulfuric acid kanye notshwala be-oxalic acid, bese iyahlungwa. Ikhekhe lokuhlunga (i-gypsum) liyahlanzwa, begodu amanzi wokuhlanza asetjenziselwa ukulungiselela ukumiswa kwe-calcium oxalate. I-filtrate (isisombululo se-oxalic acid) iyamukelwa ukususa iinhlayiya ze-calcium sulfate, iyapholiswa, yenziwe ikristalu, bese i-centrifuge ukuhlukanisa i-oxalic acid engakahlanzwa, ephinde ibe yikristalu, ihlukaniswe, bese yomiswe ukuthola umkhiqizo ofaneleko, bese utjwala bomama bubuyiselwa emuva.
Indlela ye-sodium formate lead inendlela evuthiweko, ikhwalithi yomkhiqizo ezinzileko, kanye nomjikelezo omfitjhani wokukhiqiza, ngokukhiqiza okungu-80% ukuya ku-90% kanye nokuhlanzeka kwe-oxalic acid okucwengekileko okungu-99.5%. Kodwana, kunokusilaphazeka kwe-lead emsebenzini wokukhiqiza, begodu i-sodium sulfate etholwe ekuphenduleni angeze yabuyiselwa emsebenzini, ngalokho inani elikhulu le-sulphuric acid ne-caustic soda liyasetjenziswa ekukhiqizeni. Indlela ye-calcium yokwenza i-oxalic acid ingaqeda ukusilaphazeka kwe-lead salts kanye ne-sodium sulfate emanzini angaphasi kwehlabathi, begodu ukufaka i-caustic soda nge-lime kungehlisa khulu iindleko zokukhiqiza. Umkhiqizo we-CaSO4 otholwe ekuphenduleni ungasetjenzwa ube ziinsetjenziswa zokwakha ngaphandle kokusilaphazeka. Ngesikhathi esifanako, utjwala obungu-NaOH obutholwe ekusabeleni busetjenziselwa ukusabela ne-CO ukulungiselela i-sodium formate, ngaleyo ndlela kulondolozwe inani lezinto ezisetjenziswako.

I-Shandong Pulisi Chemical Oxalic Acid: Iinzuzo eziqakathekileko
I-oxalic acid ye-Shandong Pulisi Chemical (≥99.6% yokuhlanzeka, i-CAS 144-62-7) igqama ngokungcola okuphasi khulu (i-sulfate ≤0.1%, iinsimbi ezisindako ≤0.002%, i-iron ≤0.003%) kanye ne-ISO 900 BV, REMI, FA-SCH, izitifiketi ukuqinisekisa ukuthobela iimakethe zephasi loke. Sisekelwa yiminyaka eli-18+ yobungcweti bamakhemikhali, sinikela ngeentengo eziqondileko zefektri, ukuthuthwa kweenkhonteyina ezizeleko ezinama-warehouse e-Qingdao, Tianjin, amachweba we-Shanghai, kanye nokupakisha okwenziwe ngokwezifiso (25kg/50kg) ukuthunyelwa ngaphandle komthungo eShandong Pulisi Chemical Group. I-oxalic acid yethu iphumelela khulu ekunciphiseni iinsimbi ezingakajayeleki, ukususa ukugqwala kwensimbi, ukudaya iindwangu, nokupholisa imabula, iletha ukusebenza okungaguqukiko kanye nezisombululo ezisimemeko, ezibolako zamaklayenti wamabubulo ephasini loke.