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    • 91. 发明申请
    • Integrated process for preparing a carboxylic acid from an alkane
    • 从烷烃制备羧酸的综合方法
    • US20100029975A1
    • 2010-02-04
    • US12459970
    • 2009-07-10
    • Scott HanWolfgang RuettingerDouglass W. Sevon
    • Scott HanWolfgang RuettingerDouglass W. Sevon
    • C07C253/00C07C51/16
    • C07C51/252Y02P20/125Y02P20/51Y02P20/582C07C57/04
    • The present invention relates to an integrated process for producing unsaturated carboxylic acids from the corresponding C2-C4 alkane. The process begins with integrated catalytic reactions comprising endothermic soft oxidant conversion (SOC) and exothermic selective hydrogen combustion (SHC) which cumulatively convert a C2-C4 alkane to its corresponding C2-C4 alkene in a product stream substantially free of hydrogen. Heat from the exothermic selective hydrogen combustion reaction zone is recovered and recycled back upstream to the endothermic soft oxidant conversion reaction zone. The hydrogen-free alkene products of the thermally integrated SOC/SHC reactions are then provided to a catalytic vapor phase partial oxidation process for conversion of the alkene to the corresponding unsaturated carboxylic acid or nitrile. Unreacted alkene and carbon dioxide are recovered from the oxidation product stream and recycled back to the thermally integrated soft oxidant conversion reactions.
    • 本发明涉及从相应的C 2 -C 4烷烃制备不饱和羧酸的综合方法。 该过程开始于包括吸热软氧化剂转化(SOC)和放热选择性氢燃烧(SHC)的综合催化反应,其在基本上不含氢的产物流中将C 2 -C 4烷烃累加转化成其相应的C 2 -C 4烯烃。 来自放热选择性氢燃烧反应区的热量被回收并循环回到吸热软氧化剂转化反应区的上游。 然后将热集成的SOC / SHC反应的无氢烯烃产物提供到用于将烯烃转化成相应的不饱和羧酸或腈的催化气相部分氧化方法。 从氧化产物流中回收未反应的烯烃和二氧化碳,并循环回热积分的软氧化剂转化反应。