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    • 3. 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。
    • 7. 发明申请
    • PROCESS FOR PREPARING 1,3-PROPANEDIOL
    • 制备1,3-丙二醇的方法
    • US20080154071A1
    • 2008-06-26
    • US11950294
    • 2007-12-04
    • Douglas Lee HusenGlenn Charles KomplinJoseph Broun PowellPaul Richard Weider
    • Douglas Lee HusenGlenn Charles KomplinJoseph Broun PowellPaul Richard Weider
    • C07C29/141
    • 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。