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    • 26. 发明授权
    • Process for preparation of 1,3-propanediol via hydrogenation of
3-hydroxypropanal
    • 3-羟基丙醛氢化制备1,3-丙二醇的方法
    • US5786524A
    • 1998-07-28
    • US655639
    • 1996-05-30
    • Joseph Broun PowellWilliam Ridley PledgerAndreas Nikolaos MatzakosPaul Richard WeiderJuan Pedro Arhancet
    • Joseph Broun PowellWilliam Ridley PledgerAndreas Nikolaos MatzakosPaul Richard WeiderJuan Pedro Arhancet
    • C07C29/141C07C45/58C07C31/18C07C27/04
    • C07C29/141C07C45/58
    • 1,3-propanediol is prepared from 3-hydroxypropanal in a process comprising the steps of: (a) contacting, at a temperature within the range of about 50.degree. to about 100.degree. C. and a pressure within the range of about 500 to about 5000 psig, ethylene oxide with carbon monoxide and hydrogen in an essentially non-water-miscible solvent in the presence of an effective amount of a non-phosphine-ligated cobalt or rhodium catalyst and an effective amount of a catalyst promoter under reaction conditions effective to produce an intermediate product mixture comprising less than 15 wt % 3-hydroxypropanal; (b) adding an aqueous liquid to said intermediate product mixture and extracting into said aqueous liquid a major portion of the 3-hydroxypropanal at a temperature less than about 100.degree. C. so as to provide an aqueous phase comprising 3-hydroxypropanal in a concentration of at least about 20 wt %, and an organic phase comprising at least a portion of the cobalt or rhodium catalyst or a cobalt- or rhodium-containing derivative thereof; (c) separating the aqueous phase from the organic phase; (d) diluting the aqueous phase comprising 3-hydroxy-propanal with an aqueous liquid to form a 3-hydroxypropanal solution having a 3-hydroxypropanal concentration within the range of about 0.2 to about 15 weight percent; (e) passing said aqueous 3-hydroxypropanal solution to a hydrogenation zone and in contact with a fixed-bed hydrogenation catalyst under hydrogenation conditions for a time effective to form an aqueous solution comprising 1,3-propanediol; and (f) recovering said 1,3-propanediol.
    • 1,3-丙二醇由3-羟基丙醛制备,其方法包括以下步骤:(a)在约50℃至约100℃的温度和约500至约100℃的压力范围内接触, 在有效量的非磷化氢连接的钴或铑催化剂和有效量的催化剂助催化剂的存在下,在反应条件下有效量的催化剂助催化剂,在大约5000psig的环氧乙烷与一氧化碳和氢气基本上是非水混溶性溶剂中 以产生包含小于15重量%的3-羟基丙醛的中间产物混合物; (b)向所述中间产物混合物中加入水性液体,并在低于约100℃的温度下将大部分3-羟基丙醛提取到所述含水液体中,以提供浓度为3-羟基丙醛的水相 至少约20重量%,以及包含至少一部分钴或铑催化剂或其含钴或铑的衍生物的有机相; (c)将水相与有机相分离; (d)用水性液体稀释含有3-羟基 - 丙醛的水相,形成3-羟基丙醛浓度在约0.2-约15重量%范围内的3-羟基丙醛溶液; (e)在氢化条件下将所述3-羟基丙醛水溶液通入氢化区并与固定床氢化催化剂接触,有效形成包含1,3-丙二醇的水溶液; 和(f)回收所述1,3-丙二醇。
    • 29. 发明授权
    • Process for preparing 1,3-propanediol
    • 1,3-丙二醇制备方法
    • US08013192B2
    • 2011-09-06
    • US11950294
    • 2007-12-04
    • Douglas Lee HusenGlenn Charles KomplinJoseph Broun PowellPaul Richard Weider
    • Douglas Lee HusenGlenn Charles KomplinJoseph Broun PowellPaul Richard Weider
    • C07C27/20C07C27/04C07C29/36
    • C07C29/141C07C29/80C07C45/58C07C45/64C07C45/80C07C47/19C07C31/205
    • The invention provides a process for preparing 1,3-alkanediols, such as 1,3-propanediol (PDO), from 3-hydroxyaldehydes, such as 3-hydroxypropanal (HPA), comprising providing a mixture of 3-hydroxyaldehydes in an organic solvent; extracting into an aqueous liquid a major portion of the 3-hydroxyaldehydes to provide an aqueous phase comprising 3-hydroxyaldehydes in greater concentration than the concentration of 3-hydroxyaldehydes in the 3-hydroxyaldehyde mixture, and an organic phase; separating the aqueous phase from the organic phase; contacting the aqueous phase with hydrogen in the presence of a hydrogenation catalyst to provide a hydrogenation product mixture comprising 1,3-alkanediols and water; separating water from the 1,3-alkanediols using a multi-effect evaporation scheme; recycling water containing about 50 wt % or less 1,3-propanediol based upon the total amount of 1,3-propanediol and water to the extraction stage; and recovering 1,3-alkanediols.
    • 本发明提供了从3-羟基醛如3-羟基丙醛(HPA)制备1,3-烷二醇如1,3-丙二醇(PDO)的方法,其包括在有机溶剂中提供3-羟基醛的混合物 ; 将大部分3-羟基醛萃取到含水液体中以提供包含3-羟基醛的水相,其浓度高于3-羟基醛混合物中3-羟基醛的浓度和有机相; 将水相与有机相分离; 在氢化催化剂存在下使水相与氢气接触,以提供包含1,3-烷二醇和水的氢化产物混合物; 使用多效蒸发方案从1,3-烷二醇分离水; 基于1,3-丙二醇和水的总量将含有约50重量%或更少的1,3-丙二醇的水循环到萃取阶段; 并回收1,3-链烷二醇。