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    • 2. 发明申请
    • TWO-STAGE METHOD FOR PRODUCING BUTANDIOL IN TWO REACTORS
    • 两步反应器制备丁醇的两步法
    • WO03104214A8
    • 2004-05-13
    • PCT/EP0306060
    • 2003-06-10
    • BASF AGHESSE MICHAELSCHLITTER STEPHANBORCHERT HOLGERSCHUBERT MARKUSROESCH MARKUSBOTTKE NILSFISCHER ROLF-HARTMUTHWECK ALEXANDERWINDECKER GUNTHERHEYDRICH GUNNAR
    • HESSE MICHAELSCHLITTER STEPHANBORCHERT HOLGERSCHUBERT MARKUSROESCH MARKUSBOTTKE NILSFISCHER ROLF-HARTMUTHWECK ALEXANDERWINDECKER GUNTHERHEYDRICH GUNNAR
    • C07C29/149C07D315/00C07C31/20C07D307/20
    • C07D315/00C07C29/149C07C31/207
    • The invention relates to a method for producing optionally akyl-substituted 1,4-butandiol by two-stage catalytic hydration in the gaseous phase of C4 dicarboxylic acids and/or the derivatives thereof with the steps of: a) introducing a gaseous flow of a C4 dicarboxylic acid or a derivative thereof at 200 to 300 °C and 2 to 60 bar in a first reactor and catalytic gas phase hydration to a mainly optionally alkyl-substituted gamma-butyrolactone containing product; b) introducing the product flow so obtained into a second reactor at a temperature of from 150 °C to 240 °C and a pressure of from 15 to 100 bar and catalytic gas phase hydration to optionally alkyl-substituted 1,4-butandiol; c) removing the desired product from the intermediates, byproducts and possibly not reacted educt; d) optionally returning non-reacted intermediates to one or both hydration stages, whereby in both hydration stages one catalyst each is used which comprises = 5 % by weight, preferably 5 to 95 % by weight, especially 20 to 90 % by weight of an oxidic carrier, the pressure prevailing in the second reactor is higher than in the first reactor, and the product mixture removed from the first reactor is introduced into the second reactor without further purifying it.
    • 本发明涉及一种用于在C4二羧酸和/或其衍生物,包括以下步骤的气相制备任选被烷基取代的1,4-丁二醇,通过两阶段催化氢化:a)将C4二羧酸的气体流或它们的衍生物 在200〜300℃和2至在第一反应器和催化气相加氢在含有产物主要为任选被烷基取代的γ-丁内酯60巴; b)将由此获得进入第二反应器在150℃的温度至240℃的产品流和15至100巴和催化气相任选烷基取代的1,4-丁二醇的压力; c)从中间体,副产物和任选未反应的离析物中分离所需产物; d)任选地回收未转化的中间体在一个或两个氢化阶段,其中,在每种情况下,催化剂在两个氢化中使用的<= 95重量%,优选为5〜95重量%,特别是10至80重量%的CuO 和> = 5具有重量%,优选为5〜95重量%,特别是20至90重量的氧化载体的%,在第二反应器更高的压力占优势比在第一反应器和与第一反应器的产物混合物将取出的 不经进一步纯化而引入第二反应器中。