Sodium Formate ya Paraan na Oxalic Acid
Say produksyon na oxalic acid panamegley na sodium formate ya paraan et naapag ed lead ya paraan tan say calcium ya paraan. Say carbon monoxide et nasesepsep na solusyon na sodium hydroxide pian naala so sodium formate, ya insan na-dehydrogenate pian naporma so sodium oxalate. Say unor et onreak ed lead sulfate (lead method) odino calcium hydroxide (calcium method) pian manporma na lead oxalate precipitate odino calcium oxalate precipitate, ya insan na-acidify na sulfuric acid pian nawalaan na oxalic acid.
Lead method parad produksyon na oxalic acid: Kayari na panag-uras, panag-uras na alkali, tan panag-ekal na dabok, say carbon monoxide et i-compress ed 2 MPa panamegley na compressor, in-preheat ed 150 °C ya walay 160 g/L sodium hydroxide, tan ipawit ed sakey a reactor pian makagawa na dilute sodium formate solution. Say solusyon et ikonsentray anggad manga 600 g/L, ipawit ed sakey a dehydrogenation kettle pian painitan tan ikonsentray magmaliw a solido, insan painitan tan tunawen, tan i-dehydrogenate ed 400 °C. Say dehydrogenated sodium oxalate et iparaan ed sakey a suspension, tan say lead sulfate et iyarum ed silong na panag-stir legan ya pansiasiansiaen so pH value ed 3-4. Saray natunaw ya dutak et naekal panamegley na panag-uras, insan say sobran sulfuric acid et iyarum parad panag-asido pian nawalaan na solusyon ya oxalic acid. Say barium carbonate tan 1% polyacrylamide so inyarum parad panag-coagulate tan panag-sediment pian naekal iray dutak. Say solusyon et palemewen, pagmaliwen a kristal, salaan panamegley na centrifugation, tan pamaraan pian naala so asumpal a produkto.
Paraan na calcium parad produksyon na oxalic acid: Say akaparaan ya sodium oxalate suspension tan calcium hydroxide suspension et nabilang tan ipawit ed sakey a calciumization reactor parad sakey a calciumization reaction diad silong na panag-stir. Say naala ya likido na calciumization et salaan tan urasan. Say filtrate sodium hydroxide et natipon tan uusaren ed panaggawa na sodium formate, tan say filter cake calcium oxalate et uusaren ed reaksion na acidification. Say filter cake et iparaan ed calcium oxalate suspension, ya i-acidify ed acidification kettle ya walay sulfuric acid tan concentrated oxalic acid mother liquor, insan i-filter. Say filter cake (gypsum) et urasan, tan say likidon panguras et usaren pian iparaan so calcium oxalate suspension. Say filtrate (solusyon na oxalic acid) et na-adsorb pian naekal iray pinon calcium sulfate particles, napalemew, na-crystallize, tan na-centrifuge pian nasian so krudo ya oxalic acid, ya na-recrystallize, naapag, tan napamagaan pian nawalaan na kualipikadon produkto, tan say mother liquor et na-recycle.
Say sodium formate lead method et walaan na matatken lan proseso, malet ya kalidad na produkto, tan antikey a siklo na produksyon, ya walay ani ya 80%-90% tan say pino ya oxalic acid purity ya 99.5%. Balet, walay polusyon na lead ed proseso na produksyon, tan say sodium sulfate ya naala ed reaksion et ag nayarin ipawil ed proseso, kanian baleg a kantidad na sulfuric acid tan caustic soda so naupot ed produksyon. Say paraan na calcium parad panaggawa na oxalic acid et makaekal ed polusyon na lead salts tan sodium sulfate ed danum ed dalin, tan say pangisaliwan ed caustic soda na apog et makabawas na baleg ed gastos ed produksyon. Say by-product ya CaSO4 ya naala ed reaksion et nayarin iproseso pian magmaliw ya materyales ed panagpaalagey ya anggapoy polusyon. Diad saman met a panaon, say mother liquor NaOH ya naala ed reaksion et uusaren pian manreak ed CO pian nagawa so sodium formate, kanian makatipid so karakel na raw materials.

Shandong Pulisi Chemical Oxalic Acid: Saray Manunan Bentaha
Say Shandong Pulisi Chemical's oxalic acid (≥99.6% purity, CAS 144-62-7) et nikadkaduma ed saray ultra-low impurities (sulfate ≤0.1%, heavy metals ≤0.002%, iron ≤0.003%) tan ISO 900 B, REMI, FA-SCH, certifications seguroen so panumbok ed saray sankamundoan a merkado. Susuportaan na 18+ taon ya eksperto ed kemikal, mangiyoopresi kami na direktan presyo ed pabrika, full-container logistics ya walay bodega ed Qingdao, Tianjin, Shanghai ports, tan customized packaging (25kg/50kg) parad anggapoy problema ya exportShandong Pulisi Chemical Group. Say oxalic acid mi et matalonggaring ed panag-uran na rare earth metal, panag-ekal na kalawang na metal, panagtina na tela, tan panag-polish na marmol, ya mangiiter na tuloytuloy ya performance tan sustinable, biodegradable ya solusyon parad saray kliyente na industriya ed interon mundo.