Process for the fluidized bed oxidation of ethane to acetic acid
    2.
    发明授权
    Process for the fluidized bed oxidation of ethane to acetic acid 失效
    将乙烷流化床氧化成乙酸的方法

    公开(公告)号:US5300684A

    公开(公告)日:1994-04-05

    申请号:US803882

    申请日:1991-12-09

    CPC分类号: C07C53/08 C07C51/215

    摘要: Disclosed is a process for oxidizing ethane to acetic acid which comprises feeding ethane and a recycle gas to a fluidized bed reaction zone containing fluidized particulate solid oxidation catalyst, feeding a molecular oxygen-containing gas separately from said ethane to said reaction zone so that said molecular oxygen-containing gas first mixes with the major portion of the combustible hydrocarbon feed gases within the fluidized bed, said process including the steps of (1) cooling the gaseous effluent from the reaction zone, (2) separating most of the acetic acid in liquid form from the effluent gases, leaving a gaseous stream containing nearly all of the carbon oxides contained in said effluent, (3) purging a small portion of said gaseous stream and recycling most of said gaseous stream as part of the feed to said reaction zone,wherein said purging serves to prevent build-up of carbon oxides in the reaction zone, and said recycling serves to maintain a high proportion of carbon oxides in said reaction zone gases, thus aiding in moderating the temperature elevating effect of the highly exothermic oxidation reaction in said reaction zone.

    摘要翻译: 公开了一种将乙烷氧化成乙酸的方法,该方法包括将乙烷和循环气体进料到含有流化的颗粒状固体氧化催化剂的流化床反应区,将含有分子的含氧气体与所述乙烷分开供给所述反应区,使得所述分子 首先将含氧气体与流化床内的可燃烃进料气体的主要部分混合,所述方法包括以下步骤:(1)冷却来自反应区的气态流出物,(2)将大部分乙酸分离成液体 从流出气体中形成,留下含有所述流出物中所含的几乎所有碳氧化物的气流,(3)吹扫所述气流的一小部分并将大部分所述气流作为进料的一部分再循环到所述反应区, 其中所述清洗用于防止反应区中碳氧化物的累积,并且所述循环用于维持高比例的碳氧化物 在所述反应区气体中,从而有助于缓和所述反应区中高放热氧化反应的温度升高作用。