Umusaruro wa 1, 4-butanediol (BDO) ukoresheje uburyo bwa anhydride ya kigabo Ishusho Yerekanwe

Umusaruro wa 1, 4-butanediol (BDO) hakoreshejwe uburyo bwa anhydride ya kigabo

Ibisobanuro bigufi:

Hariho inzira ebyiri zingenzi zo gukora BDO na anhydride ya kigabo.Imwe muriyo ni inzira ya hydrogenation itaziguye ya anhydride yumugabo yakozwe na Mitsubishi Petrochemical na Mitsubishi Chemical mu Buyapani mu myaka ya za 70, irangwa no gukora icyarimwe icyarimwe cya BDO, THF na GBL mugikorwa cya hydrogenation ya anhydride yumugabo.Ibicuruzwa byahimbwe bitandukanye birashobora kuboneka muguhindura imikorere.Ibindi ni inzira ya gaz esterification hydrogenation ya anhydride yumugabo yakozwe na Sosiyete ya UCC hamwe na Davey Process Technology Company mu Bwongereza, ikaba yaratejwe imbere n’ikoranabuhanga rito rya karubone.Muri 1988, kongera gusuzuma isuzuma ryibikorwa byarangiye kandi hasabwa igishushanyo mbonera.Mu 1989, IKORANABUHANGA ryimuriwe muri DongSANG CHEMICAL COMPANY YO MURI Koreya NA DONGGU CHEMICAL YUbuyapani KUBAKA 20.000-TON / umwaka 1, 4-BUtanEDIOL URUGANDA RW'inganda.

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Ibicuruzwa birambuye

Ibicuruzwa

Inzira ya esterification na hydrogenation ya anhydride yumugabo yateguwe na Davy Mckee Company mubwongereza.Igizwe nintambwe eshatu: (1) reaction hagati ya anhydride yumugabo na Ethanol;② BDO yateguwe na hydrolysis ya diethyl maleic aside;Gutandukanya no gutunganya ibicuruzwa byitwara neza.Umubare wa BDO, GBL na THF urashobora guhinduka muguhindura imikorere.Bitewe ninyungu yibiciro byumusaruro wa BDO, ibikoresho byinshi bishya byubatswe niyi nzira mumyaka yashize, ari nayo nzira nyamukuru yiterambere ryibikorwa bya BDO.Igisubizo cya Esterification:

Umusaruro wa 1, 4-butanediol (BDO) ukoresheje uburyo bwa anhydride bwabagabo 2

Hydrogenation reaction

Umusaruro wa 1, 4-butanediol (BDO) hakoreshejwe uburyo bwa anhydride ya kigabo 3

Kugeza ubu, hariho na n-butane-manic anhydride itunganijwe, ibanza gutangizwa na gaze ya gaz ya okiside ya n-butane kugirango itange anhydride yumugabo, hanyuma anhydride yumugabo ihuzwa na methanol kugirango ikore dimethyl maleate.Ihinduka rya anhydride ya kigabo irashobora kugera 100% munsi ya catalizator ikwiye.Hanyuma, BDO ikorwa na hydrogenation na hydrolysis ya catalizike ya manic.Ibyiza byiki gikorwa nuko byoroshye gutandukanya umwanda nka methanol namazi nyuma ya esterification, kandi igiciro cyo gutandukana kiri hasi.Byongeye kandi, ihindagurika rya dimethyl maleate ryiyongereye, ibyo bigatuma urwego rwimikorere ya gaz ya hydrogène ya gaz rwagutse rwagutse, kandi igipimo cyo guhindura methanol esterification kiri hejuru ya 99.7%.Kubwibyo, ntakibazo cyambere cyo kweza diethyl maleate.Kubwibyo, ntabwo ari ngombwa kongera gutunganya anhydride yumugabo yose idakozwe na mono-methyl ester, ariko methanol yonyine, yoroshya inzira yumusaruro kandi igabanya cyane ishoramari rusange ryumushinga ugereranije nubuhanga bwabanje.

Mbere: 1,4-butanediol (BDO) no gutegura ibinyabuzima byangiza PBAT

Ibikurikira: 1, 4-butanediol

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