ʻO ke ʻano hana Sodium Formate o ka waikawa Oxalic
Ua māhele ʻia ka hana ʻana o ka waikawa oxalic ma ke ʻano sodium formate i ke ʻano alakaʻi a me ke ʻano calcium. Hoʻopili ʻia ke kalapona monoxide e kahi hopena sodium hydroxide e loaʻa ai ka sodium formate, a laila hoʻoheheʻe ʻia ka hydrogen e hana i ka sodium oxalate. Hoʻopili ka mea hope me ka lead sulfate (ʻano alakaʻi) a i ʻole calcium hydroxide (ʻano calcium) e hana i ka lead oxalate precipitate a i ʻole calcium oxalate precipitate, a laila hoʻohuihui ʻia me ka sulfuric acid e loaʻa ai ka waikawa oxalic.
ʻAno alakaʻi no ka hana ʻana i ka waikawa oxalic: Ma hope o ka holoi ʻana, ka holoi ʻana i ka alkali, a me ka wehe ʻana i ka lepo, ua hoʻopaʻa ʻia ke kalapona monoxide i 2 MPa e kahi compressor, i hoʻomehana mua ʻia i 150 °C me 160 g/L sodium hydroxide, a hoʻouna ʻia i kahi reactor e hana i kahi hopena sodium formate dilute. Hoʻopili ʻia ka hopena i kahi 600 g/L, hoʻouna ʻia i kahi ipu dehydrogenation e hoʻomehana ʻia a hoʻopili ʻia i loko o kahi paʻa, a laila hoʻomehana ʻia a hoʻoheheʻe ʻia, a dehydrogenated ma 400 °C. Hoʻomākaukau ʻia ka sodium oxalate dehydrogenated i loko o kahi hoʻokuʻu, a hoʻohui ʻia ka sulfate alakaʻi ma lalo o ka hoʻoulu ʻana me ka mālama ʻana i ka waiwai pH ma 3-4. Hoʻopau ʻia nā haumia soluble ma ka holoi ʻana, a laila hoʻohui ʻia ka waikawa sulfuric keu no ka acidification e loaʻa ai kahi hopena waikawa oxalic. Hoʻohui ʻia ka Barium carbonate a me 1% polyacrylamide no ka coagulation a me ka sedimentation e wehe i nā haumia. Hoʻomaʻalili ʻia ka hopena, crystallized, kānana ʻia e ka centrifugation, a hoʻomaloʻo ʻia e loaʻa ka huahana i hoʻopau ʻia.
ʻAno hana kalima no ka hana ʻana i ka waikawa oxalic: Ua helu ʻia ka hoʻokuʻu ʻana o ka sodium oxalate i hoʻomākaukau ʻia a me ka hoʻokuʻu ʻana o ka calcium hydroxide a hoʻouna ʻia i kahi reactor calciumization no kahi hopena calciumization ma lalo o ka hoʻoulu ʻana. Kānana ʻia a holoi ʻia ka wai calciumization i loaʻa. Hoʻopili ʻia ka filtrate sodium hydroxide a hoʻohana ʻia no ka synthesizing sodium formate, a hoʻohana ʻia ka kānana cake calcium oxalate no ka hopena acidification. Hoʻomākaukau ʻia ka kānana cake i loko o kahi hoʻokuʻu calcium oxalate, kahi i acidified i loko o kahi ipu hao acidification me ka sulfuric acid a me ka wai momona oxalic acid i hoʻopaʻa ʻia, a laila kānana ʻia. Holoi ʻia ka kānana cake (gypsum), a hoʻohana ʻia ka wai holoi e hoʻomākaukau i ka hoʻokuʻu ʻana o ka calcium oxalate. Hoʻopili ʻia ka filtrate (oxalic acid solution) e wehe i nā ʻāpana calcium sulfate maikaʻi, hoʻomaʻalili ʻia, crystallized, a centrifuged e hoʻokaʻawale i ka waikawa oxalic maka, kahi i crystallized hou ʻia, hoʻokaʻawale ʻia, a hoʻomaloʻo ʻia e loaʻa kahi huahana kūpono, a hana hou ʻia ka wai momona makuahine.
ʻO ke ʻano hana alakaʻi sodium formate he kaʻina hana makua, kūpaʻa ka maikaʻi o ka huahana, a he pōkole ka pōʻaiapuni hana, me ka hua o 80%–90% a me ka maʻemaʻe o ka waikawa oxalic i hoʻomaʻemaʻe ʻia he 99.5%. Eia nō naʻe, aia ka haumia o ke kēpau i ke kaʻina hana, a ʻaʻole hiki ke hoʻihoʻi ʻia ka sodium sulfate i loaʻa mai ka hopena i ke kaʻina hana, no laila ua hoʻopau ʻia ka nui o ka waikawa sulfuric a me ka soda caustic i ka hana ʻana. Hiki i ke ʻano calcium no ka synthesizing oxalic acid ke hoʻopau i ka haumia o nā paʻakai kēpau a me ka sodium sulfate i ka wai honua, a ʻo ka hoʻololi ʻana i ka soda caustic me ka lime hiki ke hōʻemi nui i nā kumukūʻai hana. Hiki ke hana ʻia ka huahana CaSO4 i loaʻa mai ka hopena i nā mea kūkulu me ka ʻole o ka haumia. I ka manawa like, hoʻohana ʻia ka wai momona makuahine NaOH i loaʻa mai ka hopena e hana me CO e hoʻomākaukau i ka sodium formate, no laila e mālama ana i ka nui o nā mea maka.

ʻO Shandong Pulisi Chemical Oxalic Acid: Nā Pōmaikaʻi Koʻikoʻi
ʻO ka waikawa oxalic a Shandong Pulisi Chemical (≥99.6% maʻemaʻe, CAS 144-62-7) e kū nei me nā haumia haʻahaʻa loa (sulfate ≤0.1%, nā metala kaumaha ≤0.002%, hao ≤0.003%) a me nā palapala hōʻoia ISO 9001, BV, REACH, FAMI-QS, e hōʻoiaʻiʻo ana i ka hoʻokō ʻana no nā mākeke honua. Kākoʻo ʻia e 18+ mau makahiki o ka ʻike loea kemika, hāʻawi mākou i nā kumukūʻai pololei mai ka hale hana, nā logistics piha-pahu me nā hale kūʻai ma nā awa ʻo Qingdao, Tianjin, Shanghai, a me nā ʻōpala i hana maʻamau ʻia (25kg/50kg) no ka hoʻokuʻu aku maʻalahi Shandong Pulisi Chemical Group. ʻOi aku ka maikaʻi o kā mākou waikawa oxalic i ka hoʻoheheʻe ʻana o ka metala honua kakaikahi, ka wehe ʻana i ka ʻōpala metala, ka hoʻoluʻu ʻana i ka lole, a me ka poli ʻana o ke kinikini, e hāʻawi ana i ka hana mau a me nā hopena hoʻomau, biodegradable no nā mea kūʻai aku ʻoihana ma ka honua holoʻokoʻa.