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Alaabta

Ku takhasusay soo saarista khamriga propargyl, 1,4 butynediol iyo 3-chloropropyne

Wax soo saarka 1, 4-butanediol (BDO) ee habka anhydride lab

Sharaxaad Gaaban:

Waxaa jira laba hab oo waaweyn oo loogu talagalay soo saarista BDO ee maleic anhydride.Mid waa habka tooska ah ee hydrogenation-ka ee anhydride-ka lab ah ee ay soo saareen Mitsubishi Petrochemical iyo Mitsubishi Chemical ee Japan 1970-meeyadii, taas oo lagu garto wax soo saarka isku mar ah ee BDO, THF iyo GBL ee habka hydrogenation of anhydride maleic.Alaabooyinka ka kooban noocyo kala duwan ayaa lagu heli karaa iyadoo la hagaajinayo xaaladaha habka.Midda kale waa habka gaaska esterification hydrogenation of maleic anhydride oo ay soo saartay Shirkadda UCC iyo Shirkadda Davey Process Technology ee Boqortooyada Midowday, kaas oo laga sameeyay tignoolajiyada isku-dhafka karbonyl ee cadaadiska hooseeya.Sannadkii 1988-kii, dib-u-qiimaynta habka socodka ayaa la dhammaystiray waxaana la soo jeediyay naqshadaynta warshadaha.1989kii, TECHNOLOGYKA waxa loo wareejiyay DongSANG COMPANY CHEMICAL COPANY OF Korea IYO DONGGU CHEMICAL Company OF Japan SI loo dhiso 20,000-TON/sanad 1, 4-BUtanEDIOL warshad wax soo saarka.


Faahfaahinta Alaabta

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Habka esterification iyo hydrogenation of maleic anhydride waxaa soo saartay Shirkadda Davy Mckee ee Boqortooyada Ingiriiska.Waxay ka kooban tahay saddex tallaabo: (1) falcelinta u dhaxaysa maleic anhydride iyo ethanol;② BDO waxaa lagu diyaariyey hydrolysis of diethyl maleic acid;③ Kala saarida iyo sifaynta alaabta falcelinta.Saamiga BDO, GBL iyo THF waa la bedeli karaa iyadoo la hagaajinayo shuruudaha habka.Sababtoo ah faa'iidada kharashka wax soo saarka BDO, qalabyo badan oo cusub ayaa lagu dhisay habkan sanadihii la soo dhaafay, kaas oo sidoo kale ah horumarka ugu weyn ee habka wax soo saarka BDO.Falcelinta Esterification:

Soo saarista 1,4-butanediol (BDO) ee habka anhydride lab

Dareen-celinta hydrogenation

Soo saarista 1, 4-butanediol (BDO) ee habka anhydride lab ah 3

Waqtigan xaadirka ah, waxaa sidoo kale jira hababka n-butane-maleic anhydride, kuwaas oo marka hore lagu kiciyo oxidation wajiga gaaska ee n-butane si loo soo saaro anhydride maleic, ka dibna maleic anhydride waxaa lagu dhajiyaa methanol si loo soo saaro dimethyl maleate.Beddelka anhydride labka ah wuxuu gaari karaa 100% hoos yimaada kicinta habboon.Ugu dambeyntii, BDO waxaa soo saara hydrogenation iyo hydrolysis ee kicinta anhydride maleic.Faa'iidooyinka habkani waa in ay fududahay in la kala saaro wasakhaha sida methanol iyo biyaha ka dib marka la nadiifiyo, qiimaha kala-soocidda ayaa hooseeya.Waxaa intaa dheer, isbeddelka dimethyl maleate waa la kordhiyaa, taas oo ka dhigaysa kala duwanaanshaha hawlgalka marxaladda gaaska hydrogenation-ka ballaaran, iyo heerka beddelka ee esterification methanol wuxuu ka sarreeyaa 99.7%.Sidaa darteed, ma jirto dhibaato sifeyn bilow ah ee dietyl maleate.Sidaa darteed, ma aha lagama maarmaan in dib loo warshadeeyo dhammaan anhydride maleic anhydride iyo mono-methyl ester, laakiin kaliya methanol saafi ah, kaas oo fududeynaya habka wax soo saarka oo si weyn u yareynaya maalgashiga guud ee mashruuca marka la barbardhigo tignoolajiyada hore.


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