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    • 10. 发明专利
    • Method for inhibiting polymerization during recovery and purification of unsaturated mononitrile
    • 在不饱和单体的回收和纯化过程中抑制聚合的方法
    • JP2011063607A
    • 2011-03-31
    • JP2010253574
    • 2010-11-12
    • Ineos Usa Llcイネオス・ユーエスエイ・エルエルシー
    • ROSEN BRUCE IFIRTH BRUCE E
    • C07C253/32C07C253/24C07C253/26C07C255/08
    • C07C253/26C07C253/32C07C255/08
    • PROBLEM TO BE SOLVED: To provide processes for recovery and refining of valuable nitrogen-containing organic compounds formed by catalytic oxidation of at least one feed compound selected from the group consisting of propane, propylene, isobutane and isobutylene in the presence of ammonia to produce a gas.
      SOLUTION: The processes include a step of quenching the gaseous reactor effluent with an aqueous quench liquid; a step of forming an aqueous solution comprising the corresponding unsaturated mononitrile, hydrogen cyanide and other organic co-products; and a step of using an integrated sequence of distillations and phase separations to recover for recycle of a useful aqueous liquid and obtain the desired nitrogen-containing products. Aqueous solutions are fractionated in an integrated system of multi-stage columns while an effective polymerization inhibiting amount of at least one member of a preselected class of p-phenylenediamine compounds is maintained therein.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 待解决的问题:提供在氨的存在下通过催化氧化至少一种选自丙烷,丙烯,异丁烷和异丁烯的进料化合物形成的有价值的含氮有机化合物的回收和精炼的方法 产生气体。 解决方案:该方法包括用水淬火液体淬灭气态反应器流出物的步骤; 形成包含相应的不饱和单腈,氰化氢和其它有机副产物的水溶液的步骤; 以及使用一体化的蒸馏和分相序列来回收有用的含水液体的循环并获得所需的含氮产物的步骤。 将水溶液在多级塔的一体化系统中分馏,同时保持有效聚合抑制量的预选类对苯二胺化合物的至少一种。 版权所有(C)2011,JPO&INPIT