Process for cleaning up wastewaters from the preparation of alcohols
    1.
    发明授权
    Process for cleaning up wastewaters from the preparation of alcohols 有权
    从醇的制备中清除废水的方法

    公开(公告)号:US6139747A

    公开(公告)日:2000-10-31

    申请号:US212823

    申请日:1998-12-16

    摘要: A process for cleaning up the wastewaters which originate from the preparation of alcohols. The alcohol preparation includes an aldolization reaction followed by hydrogenation and then alcohol distillation. The resulting wastewaters include 3 wastewater fractions from respective steps in the alcohol preparation. The process for cleaning up these wastewaters include the steps of (a) combining two of the three fractions and adjusting the pH of the combination, (b) bringing at least one of the fractions into contact with a coalescing filter, and (c) extracting a mixture of all three fractions.

    摘要翻译: 一种净化源自醇类制品的废水的方法。 醇制剂包括醛醇化反应,然后氢化,然后进行醇蒸馏。 所得的废水包括来自醇制剂中各步骤的3个废水馏分。 净化这些废水的方法包括以下步骤:(a)将三种馏分中的两种混合并调节组合的pH值,(b)使至少一种馏分与聚结过滤器接触,和(c)萃取 所有三个分数的混合物。

    Process for preparing alcohols
    2.
    发明授权
    Process for preparing alcohols 有权
    醇的制备方法

    公开(公告)号:US6096931A

    公开(公告)日:2000-08-01

    申请号:US204597

    申请日:1998-12-03

    CPC分类号: C07C29/141

    摘要: In a process for preparing alcohols comprising the hydrogenation of aldehydes in the presence of a hydrogenation catalyst in the gas phase, the improvement comprising adding nitrogen-containing bases to the aldehyde to be hydrogenated, whereby the formation of by-products is largely suppressed and isolation of the desired alcohols in high selectivity and correspondingly high yield is made possible.

    摘要翻译: 在包含在气相中的氢化催化剂存在下醛的氢化制备醇的方法中,改进包括向待氢化的醛中加入含氮碱,从而大大抑制副产物的形成和分离 的所需醇以高选择性和相应的高收率成为可能。

    Process for the preparation of alcohols in two stages
    7.
    发明授权
    Process for the preparation of alcohols in two stages 失效
    两阶段制备醇的方法

    公开(公告)号:US5475161A

    公开(公告)日:1995-12-12

    申请号:US824745

    申请日:1992-01-17

    摘要: A process for the preparation of alcohols by reaction of organic carbonyl compounds with hydrogen in two stages at elevated temperature and, optionally, elevated pressure. In the first stage, hydrogen and the carbonyl compounds are fed as a gas to a copper-containing catalyst and reacted to 80 to 99.5 percent of the theoretical conversion. In the second stage, the reaction product of the first stage is fed to a nickel/alumina/zirconium dioxide catalyst as a liquid, along with hydrogen. The carbonyl compounds used include aldehydes and their derivatives and, in particular, aliphatic unsaturated and saturated aldehydes.

    摘要翻译: 通过有机羰基化合物与氢在升高的温度和任选的高压下两步反应制备醇的方法。 在第一阶段,将氢气和羰基化合物作为气体加入到含铜催化剂中,并反应至理论转化率的80-99.5%。 在第二阶段中,将第一阶段的反应产物与氢一起作为液体加入到镍/氧化铝/二氧化锆催化剂中。 所用的羰基化合物包括醛及其衍生物,特别是脂族不饱和醛和饱和醛。

    Method of stabilizing aldehydes
    10.
    发明授权
    Method of stabilizing aldehydes 有权
    稳定醛的方法

    公开(公告)号:US6137013A

    公开(公告)日:2000-10-24

    申请号:US211937

    申请日:1998-12-15

    CPC分类号: C07C45/86

    摘要: A method of stabilizing aliphatic C.sub.3 -C.sub.14 -aldehydes against polymerization and autocondensation by the addition of alkaline substances to the aldehydes wherein the alkaline substances used are alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates or alkali metal carboxylates which are added to the aldehyde to be stabilized in amounts of 0.05-20 ppm, based on the aldehyde.

    摘要翻译: 通过向醛中添加碱性物质来稳定脂肪族C 3 -C 14醛对聚合和自缩合的方法,其中使用的碱性物质是碱金属氢氧化物,碱土金属氢氧化物,碱金属碳酸盐,碱土金属碳酸盐或碱金属羧酸盐 基于醛加入到待稳定的醛中,其量为0.05-20ppm。