Process
    3.
    发明授权
    Process 失效
    处理

    公开(公告)号:US5414159A

    公开(公告)日:1995-05-09

    申请号:US174320

    申请日:1993-12-30

    CPC classification number: C07C35/14 C07C29/149 C07C2101/14

    Abstract: A process is described for the production of cyclohexanedimethanol by hydrogenation of a dialkyl cyclohexanedicarboxylate which comprises the steps of:(a) providing a hydrogenation zone containing a charge of a granular reduced manganese promoted copper catalyst;(b) forming a vaporous feed stream of a hydrogenatable material comprising a dialkyl cyclohexanedicarboxylate and from about 0.1 wt % up to about 15 wt % of an acidic material at a feed temperature which is in the range of from about 150.degree. C. to about 350.degree. C. and which is above the dew point of the feed stream and at a feed pressure which is in the range of from about 150 psia (about 10.34 bar) up to about 2000 psia (about 137.90 bar), said vaporous mixture having a known hydrogen-containing gas:dialkyl cyclohexanedicarboxylate ratio;(c) supplying the vaporous feed stream to the hydrogenation zone;(d) maintaining hydrogenation conditions in the hydrogenation zone which are effective to maintain the reaction mixture in contact with the catalyst above its dew point;(e) passing the vaporous feed stream through the hydrogenation zone: and(f) recovering from the hydrogenation zone a product stream comprising cyclohexanedimethanol.

    Abstract translation: 描述了通过氢化环己烷二羧酸二烷基酯制备环己烷二甲醇的方法,该方法包括以下步骤:(a)提供含有粒状还原锰促进铜催化剂装料的氢化区; (b)在约150℃至约20℃的进料温度下,形成包含环己烷二羧酸二烷基酯和约0.1重量%至约15重量%酸性物质的可氢化材料的气态进料流 350℃,高于进料流的露点,进料压力在约150psia(约10.34巴)至约2000psia(约137.90巴)的范围内,所述蒸气混合物具有 已知的含氢气体:环己烷二羧酸二烷基酯比例; (c)将蒸气进料流供应到氢化区; (d)保持加氢区中的氢化条件,其有效地使反应混合物与催化剂接触高于其露点; (e)使气态进料流通过氢化区;和(f)从氢化区回收包含环己烷二甲醇的产物流。

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