Njira Yolumikizira Oxalic Acid Carbon Monoxide
Poyamba njira imeneyi inkagwiritsa ntchito mchere wa palladium ndi mkuwa ngati zinthu zoyambitsa, ndipo inkachita zinthu zophatikizana ndi mpweya wa carbon monoxide, mpweya, mowa, ndi nitric acid pa 8–11 MPa ndi 90–100 °C. Choyamba, njira imeneyi imapanga oxalate ester, yomwe imathiridwa madzi m'malo otentha kuti ipange oxalic acid ndi mowa wofanana.
Njirayi ili ndi njira imodzi yogwiritsira ntchito zinthu zoyambitsa matenda, ntchito zambiri, kusankha bwino, kuchira mosavuta, kuyera kwambiri kwa zinthu, komanso kuipitsidwa kochepa kwa zinthu. Komabe, ili ndi zofunikira zambiri kuti ikhale yoyera kwambiri ya carbon monoxide, kugwiritsa ntchito kwambiri, zinthu zoyambitsa matenda zodula, komanso ndalama zambiri.
Pogwiritsa ntchito Pd/C ngati chothandizira, carbon monoxide ndi nitrite ester zimagwirizanitsidwa kuti zipange oxalate ester pa 130 °C ndi kuthamanga kwa mpweya, ndi nitric oxide ngati chinthu china chowonjezera. Oxalic acid ndi mowa wofanana zimapezeka powonjezera hydrolyzing ya oxalate ester. Yankho la mowa wolekanitsidwa limasinthidwanso kuti lipange nitrite ester, yomwe imatha kubwezeretsedwanso.
Fujian Institute of Structure of Matter, Chinese Academy of Sciences, yachita kafukufuku pa chiŵerengero cha zipangizo zopangira ndi mikhalidwe yosiyanasiyana ya liwiro la mlengalenga pa kapangidwe ka catalytic ka dimethyl oxalate pofufuza za catalytic coupling ya mlengalenga catalytic ya CO ku oxalic acid, ndipo yasankha mikhalidwe yoyenera ya reaction. Pd (2.0%)/α-Al₂O₃ catalyst yabwino idapeza phindu la space-time la 999 g/L·h pansi pa mikhalidwe ya mlengalenga, 140 °C, CO/CH₃ONO=1.5, ndi liwiro la mlengalenga la 3000/h. Bungweli linagwirizana ndi Fujian Petrochemical Design Institute ndi Fujian Nanqing Ammonia Plant kuti achite mayeso oyeserera a 100 t/a pobwezeretsa CO kuchokera ku synthetic ammonia copper scrubbing, atmospheric pressure catalytic synthesis ya dimethyl oxalate, ndi hydrolysis ku oxalic acid.
Poyerekeza ndi njira ya liquid-phase, njira iyi ili ndi kusankha kwakukulu, njira yosavuta, kuyera kwambiri kwa zinthu, komanso mtengo wotsika wopanga. Ikhoza kugwiritsa ntchito mpweya wachilengedwe kapena malasha ngati zinthu zopangira, komanso ingagwiritse ntchito carbon monoxide yomwe yapezeka kuchokera ku ammonia copper scrubbing kapena yellow phosphorus furnace, blast furnace, ndi converter tail gas ngati gwero la mpweya wa carbon monoxide. Nthawi yomweyo, imatha kupereka zinthu zotsika mtengo zopangira ethylene glycol ndi synthesis yogwirizana ndi oxalate ester ngati intermediate.

Shandong Pulisi Chemical Co., Ltd. | Wopereka Oxalic Acid Wapamwamba
Yokhazikitsidwa mu 2006, Pulisi Chemical imadziwika kwambiri ndi oxalic acid (CAS 144-62-7) yoyera kwambiri, mogwirizana ndi miyezo yapadziko lonse lapansi yotumizira kunja kwa mafakitale ndi magiredi oyeretsedwa. Kampani yathu yopanga zinthu ku Zibo imatsimikizira kuwongolera bwino kwa khalidwe, ndi oxalic acid yoyera kwambiri yomwe ili ndi chiyero cha 96% komanso choyeretsedwa bwino chomwe chimafika 99.6% - kukwaniritsa zofunikira zosiyanasiyana zamafakitale.
Oxalic acid yathu imadziwika bwino chifukwa cha kusungunuka kwake bwino komanso mphamvu zake zokhazikika za mankhwala, zomwe zimagwiritsidwa ntchito ngati zinthu zopangira zosiyanasiyana m'magawo osiyanasiyana. Pakukonza zitsulo, imachotsa bwino dzimbiri ndi zigawo za oxide pamwamba pa chitsulo, aluminiyamu, ndi mkuwa, zomwe zimapangitsa kuti pakhale kumatirira kwa magalimoto, ndege, komanso ma electroplating. Mu nsalu, imagwira ntchito ngati choyeretsera utoto chomwe chimateteza chilengedwe komanso chowonjezera utoto, ndikuwonjezera kulimba kwa utoto wa nsalu komanso kuwala kwake.
Kuphatikiza apo, imagwiritsidwa ntchito kwambiri popanga mankhwala, kukonza matabwa, kuchotsa zitsulo zamtengo wapatali, komanso kukonza madzi. Tili ndi ISO 9001 ndi EU REACH, timapereka ma phukusi okhazikika a 25kg kuti tigule zinthu zambiri, kuonetsetsa kuti zinthuzo zikupezeka padziko lonse lapansi. Kaya ndi mafakitale akuluakulu kapena ntchito zapamwamba, Pulisi Chemical imapereka chithandizo chaukadaulo komanso chaukadaulo nthawi zonse.