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    • 3. 发明授权
    • Process for hydroformylation of olefins
    • 烯烃加氢甲酰化方法
    • US4322564A
    • 1982-03-30
    • US189427
    • 1980-09-22
    • Yoshitoshi TsunodaShimpei TomitaChihiro Miyazawa
    • Yoshitoshi TsunodaShimpei TomitaChihiro Miyazawa
    • B01J31/00C07B61/00C07C45/00C07C45/50C07C45/90C07C47/02C07C67/00
    • C07C45/50Y02P20/584
    • A process for hydroformylation of olefins is described which comprises a step of reacting olefins with carbon monoxide and hydrogen in the presence of a Group VIII noble metal-triarylphosphine complex catalyst, an excess amount of triarylphosphine, a reaction solvent, and organic high boiling point by-products, taking out the produced aldehyde by separating from the resulted hydroformylation reaction product, and thereafter circulating the residual liquid containing the catalyst and the organic high boiling point by-products to the reaction system as a circulating catalyst liquid, wherein the improvement comprises withdrawing at least a part of said circulating catalyst liquid as an extracted catalyst liquid, distilling off at least a part of the organic high boiling point by-products by steam distillation of said extracted catalyst liquid, and recirculating the bottoms of the steam distillation tower to the hydroformylation reaction step.
    • 描述了烯烃加氢甲酰化的方法,该方法包括在VIII族贵金属 - 三芳基膦配合物催化剂,过量的三芳基膦,反应溶剂和有机高沸点存在下使烯烃与一氧化碳和氢气反应的步骤, 产物,通过从所得加氢甲酰化反应产物中分离出所产生的醛,然后将含有催化剂和有机高沸点副产物的残留液体作为循环催化剂液体循环到反应体系中,其中改进包括萃取 所述循环催化剂液体的至少一部分作为提取的催化剂液体,通过所述萃取的催化剂液体的蒸汽蒸馏蒸馏至少一部分有机高沸点副产物,并将蒸汽蒸馏塔的塔底物再循环到 加氢甲酰化反应步骤。
    • 5. 发明授权
    • Process for hydroformylation of an olefin
    • 烯烃氢化方法
    • US5105018A
    • 1992-04-14
    • US596383
    • 1990-10-12
    • Chihiro MiyazawaHiroshi Mikami
    • Chihiro MiyazawaHiroshi Mikami
    • B01J31/22B01J31/24C07B61/00C07C45/50C07C47/02
    • C07C45/50
    • A process for hydroformylation of an olefin, which comprises reacting an olefin with carbon monoxide and hydrogen in the presence of a rhodium catalyst having a trivalent organic phosphorus compound as a ligand, wherein the hydroformylation reaction is conducted by two stage reactor systems i.e., a first stage reactor system comprising a reactor or reactors having a mixing characteristic of the liquid phase being substantially of complete mixing type, and a second stage reactor system being a reaction system of a catalyst solution circulating type and comprising a reactor or reactors having a mixing characteristic of piston flow type wherein when the mixing characteristic of the liquid phase is represented by a diffusion model, a non-dimensional number U (hereafter referred to as a "flow mixing parameter") defined by the formula (I):U.tbd.uL/2E (I)wherein u is an average flow velocity (cm/sec), L is the length (cm) of the reaction layer, and E is an average diffusion coefficient (cm.sup.2 /sec), is at least 0.4, a gaseous product or gas-liquid mixture discharged from the first stage reactor system, is separated into a stream containing the unreacted olefin and other stream, and a part or whole of the stream containing the unreacted olefin is supplied to the second stage reactor system.