VERFAHREN ZUR HERSTELLUNG VON ACROLEIN UND/ODER ACRYLSÄURE
    6.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON ACROLEIN UND/ODER ACRYLSÄURE 有权
    VERFAHREN ZUR HERSTELLUNG VON ACROLEIN UND / ODERACRYLSÄURE

    公开(公告)号:EP1289919B1

    公开(公告)日:2006-11-29

    申请号:EP01956472.3

    申请日:2001-06-13

    摘要: Acrolein and acrylic acid are produced from propane and propene by absorption/desorption of propane and propene from a gas mixture followed by oxidation, in which no heterogeneously catalyzed dehydrogenation of propane occurs between the desorption and oxidation stages without addition of oxygen. Acrolein and acrylic acid are produced from propane and propene by: (a) separation of propane and propene from a gas mixture (A) by absorption in an absorption medium; (b) separation of propane and propene from the absorbent to give a mixture (B) containing propane and propene; and (c) using mixture (B) for oxidation to the required product(s). In this process, no catalytic dehydrogenation of propane without the addition of oxygen is carried out between stages (b) and (c).

    摘要翻译: 丙烯和丙烯酸由丙烷和丙烯通过从气体混合物中吸收/解吸丙烷和丙烯然后氧化制得,其中在不加氧的解吸和氧化阶段之间不发生丙烷的非均相催化脱氢。 丙烯和丙烯酸由丙烷和丙烯通过以下步骤制备:(a)通过在吸收介质中吸收而从气体混合物(A)中分离丙烷和丙烯; (b)从吸收剂中分离出丙烷和丙烯,得到含有丙烷和丙烯的混合物(B); 和(c)使用混合物(B)氧化成所需产品。 在此过程中,在阶段(b)和(c)之间不进行丙烷的催化脱氢而不加氧。

    VERFAHREN ZUR HERSTELLUNG VON PHTHALSÄUREANHYDRID
    9.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON PHTHALSÄUREANHYDRID 有权
    VERFAHREN ZUR HERSTELLUNG VONPHTHALSÄUREANHYDRID

    公开(公告)号:EP1831147A1

    公开(公告)日:2007-09-12

    申请号:EP05819946.4

    申请日:2005-12-21

    IPC分类号: C07C51/265 C07D307/89

    摘要: Processes comprising: (a) providing a reactant comprising a component selected from the group consisting of o-xylene, naphthalene and mixtures thereof, and a gas comprising oxygen; (b) reacting the reactant and the gas in a reaction system, in the presence of a catalyst, to form phthalic anhydride; wherein the reaction system comprises: (i) at least two reaction zones, each reaction zone cooled with a coolant; and (ii) an intermediate cooling zone disposed between a first of the at least two reaction zones and a second of the at least two reaction zones; and wherein the coolant entering the first of the at least two reaction zones has a temperature which is more than 20° C. higher than a temperature of the coolant entering the second of the at leas two reaction zones.

    摘要翻译: 包括以下步骤的方法:(a)提供包含选自邻二甲苯,萘及其混合物的组分和含氧气体的反应物; (b)使反应物和气体在催化剂存在下在反应体系中反应形成邻苯二甲酸酐; 其中所述反应体系包含:(i)至少两个反应区,每个反应区用冷却剂冷却; 和(ii)设置在所述至少两个反应区中的第一反应区与所述至少两个反应区中的第二反应区之间的中间冷却区; 并且其中进入所述至少两个反应区中的第一个的冷却剂的温度比进入所述至少两个反应区中的第二个的冷却剂的温度高20℃以上。