Sodium Formate Ɔkwan a Wɔfa so Yɛ Oxalic Acid
Wɔkyekyɛ oxalic acid a wɔde sodium formate kwan no yɛ no mu ayɛ no kɔbere kwan ne calcium kwan no. Wɔde sodium hydroxide aduru twetwe carbon monoxide ma wonya sodium formate, na afei wɔma nsu fi mu ma ɛyɛ sodium oxalate. Nea etwa to no ne kɔbere sulfate (kɔbere kwan) anaa calcium hydroxide (calcium kwan) yɛ adwuma ma ɛyɛ kɔbere oxalate a ɛtɔ anaa calcium oxalate a ɛtɔ gu fam, na afei wɔde sulfuric acid yɛ acid ma wonya oxalic acid.
Ɔkwan a wɔfa so yɛ oxalic acid: Sɛ wɔhohoro, wɔhohoro alkali, na wɔayi mfutuma awie a, wɔde compressor mia carbon monoxide ma ɛyɛ 2 MPa, na wɔde sodium hydroxide 160 g/L di kan yɛ hyew kodu 150 °C, na wɔde kɔ reactor mu ma ɛyɛ sodium formate solution a ɛyɛ mmerɛw. Wɔde aduru no gu bɛyɛ 600 g/L, de kɔ dehydrogenation kettle mu ma ɛyɛ hyew na wɔde yɛ ade a ɛyɛ den, afei wɔma ɛyɛ hyew na wɔyow, na wɔma nsu fi mu wɔ 400 °C. Wɔsiesie sodium oxalate a hydrogenated no ma ɛyɛ suspension, na wɔde lead sulfate ka ho wɔ nkankan ase bere a wɔma pH bo no kɔ so yɛ 3–4. Wɔnam ahohoro so yi efĩ a ɛtumi nwura mu, na afei wɔde sulfuric acid a ɛboro so ka ho ma ɛyɛ acid na ama wɔanya oxalic acid aduru. Wɔde barium carbonate ne 1% polyacrylamide ka ho ma ɛyɛ coagulation ne sedimentation de yi efĩ fi hɔ. Wɔma ano aduru no yɛ nwini, yɛ no ahwehwɛ, wɔde centrifugation yiyi mu, na wɔyow ma wonya nea wɔawie no.
Calcium kwan a wɔfa so yɛ oxalic acid: Wɔkyerɛ sodium oxalate suspension ne calcium hydroxide suspension a wɔasiesie no dodow na wɔde kɔ calciumization reactor ma wɔyɛ calciumization reaction wɔ stirring ase. Wɔde calciumization nsu a wɔanya no yiyi mu na wɔhohoro mu. Wɔde sodium hydroxide a wɔde yiyi mu no yɛ den na wɔde yɛ sodium formate, na wɔde filter keeki calcium oxalate no yɛ acidification reaction no. Wɔyɛ keeki a wɔde yiyi mu no ma ɛyɛ calcium oxalate a wɔde ahyɛ mu, a wɔde sulfuric acid ne oxalic acid ɛna nsa a wɔahyɛ no den ayɛ no acid wɔ acidification kettle mu, na afei wɔde yiyi mu. Wɔhohoro keeki a wɔde yiyi mu (gypsum) no, na wɔde nsu a wɔde hohoro no yɛ calcium oxalate a wɔde ahyɛ mu no. Wɔtwetwe nsu a wɔayiyi (oxalic acid aduru) no de yi calcium sulfate asinasin nketenkete, ma ɛyɛ nwini, ɛyɛ ahwehwɛ, na wɔde gu centrifuge mu ma ɛtetew oxalic acid a wɔmfa nhyehyɛ mu, a wɔsan yɛ no kristal, tetew mu, na wɔyow ma wonya ade a ɛfata, na wɔsan de ɛna nsa no di dwuma.
Sodium formate kɔbere kwan no wɔ adeyɛ a ɛho akokwaw, nneɛma a wɔyɛ no yiye a ɛyɛ den, ne nea wɔyɛ no kyinhyia tiawa, a ɛma aba 80%–90% na oxalic acid a wɔayɛ no yiye a ɛho tew yɛ 99.5%. Nanso, efĩ a kɔbere wɔ wɔ adeyɛ no mu, na wontumi nsan mfa sodium sulfate a wonya fi adeyɛ no mu no nsan nkɔ adeyɛ no mu, enti wɔdi sulphuric acid ne caustic soda pii wɔ adeyɛ no mu. Calcium kwan a wɔfa so yɛ oxalic acid no betumi ayi efĩ a kɔbere nkyene ne sodium sulfate de ba asase ase nsu mu no afi hɔ, na sɛ wɔde lime besi caustic soda ananmu a, ebetumi atew ɛka a wɔbɔ wɔ nneɛma a wɔyɛ no so kɛse. Wobetumi ayɛ CaSO4 a efi adeyɛ no mu ba no ho adwuma ayɛ no adansi nneɛma a efĩ biara nni mu. Bere koro no ara mu no, wɔde ɛna nsa NaOH a wonya fi adeyɛ no mu no di dwuma de ne CO yɛ adwuma de siesie sodium formate, na ɛnam so ma wɔkora nneɛma a wɔde yɛ adwuma no dodow so.

Shandong Pulisi Nnuru Oxalic Acid: Mfaso Titiriw a Ɛwɔ So
Shandong Pulisi Chemical oxalic acid (≥99.6% ahotew, CAS 144-62-7) da nsow wɔ efĩ a ɛba fam koraa (sulfate ≤0.1%, dade a emu yɛ duru ≤0.002%, dade ≤0.003%) ne ISO 9001, BV, REACH, FAMI-QS adansedi ahorow, a ɛma wodi mmara so ma wiase nyinaa gua ahorow. Backed by 18 + mfeɛ nnuru ho nimdeɛ, yɛde factory-tẽẽ bo, full-container logistics ne adekoradan nyinaa Qingdao, Tianjin, Shanghai hyɛn gyinabea, ne customized packaging (25kg / 50kg) ma seamless exportShandong Pulisi Chemical Group. Yɛn oxalic acid di mu wɔ asase a ɛntaa nsi dade a ɛtɔ, dade nkannare a woyi fi hɔ, ntama a wɔde kɔla, ne marble polishing, de adwumayɛ a ɛkɔ so daa ne ano aduru a ɛtra hɔ daa, biodegradable ma mfiridwuma mu afɛfo wɔ wiase nyinaa.