Recovery of aldehydes from hydroformylation reaction gas
    1.
    发明授权
    Recovery of aldehydes from hydroformylation reaction gas 失效
    从加氢甲酰化反应气中回收醛

    公开(公告)号:US4479012A

    公开(公告)日:1984-10-23

    申请号:US363565

    申请日:1982-03-30

    摘要: Aldehydes are obtained from the gaseous product of the hydroformylation of olefinically unsaturated compounds using a rhodium catalyst by a process (cf. FIG. 2) in which(a) this gaseous product is introduced, without being cooled or depressured, into a distillation column D,(b) the top fraction from this column is cooled in a condenser K so that the greater part of the aldehydes contained therein is condensed,(c) the condensate is separated, in a separator A, into a gas phase and a liquid phase,(d) the gas phase from A, after waste gas has been separated off, is again brought to the hydroformylation pressure by means of a compressor P, and is returned to the reactor as a recycle gas,(e) the liquid phase from A is returned to D, and(f) the aldehydes are taken off from column D as liquid bottom products and/or as a vaporous side stream.

    摘要翻译: 醛通过使用铑催化剂的方法(参见图2)从烯属不饱和化合物的加氢甲酰化的气态产物获得,其中(a)将该气态产物不经冷却或减压引入蒸馏塔D ,(b)将该塔的顶部馏分在冷凝器K中冷却,使其中含有的大部分醛缩合,(c)冷凝物在分离器A中分离成气相和液相 ,(d)在废气分离后,来自A的气相再次通过压缩机P进入加氢甲酰化反应器,并作为循环气体返回到反应器,(e)液相从 A返回到D,和(f)醛作为液体底部产物和/或作为蒸气侧流从塔D中取出。

    Continuous manufacture of formamide
    2.
    发明授权
    Continuous manufacture of formamide 失效
    连续生产甲酰胺

    公开(公告)号:US4134915A

    公开(公告)日:1979-01-16

    申请号:US793788

    申请日:1977-05-05

    CPC分类号: C07C231/02

    摘要: Formamide is manufactured continuously from methyl formate and gaseous ammonia. The reaction is carried out in a reactor at from 30 to 90.degree. C, from 5 to 20% by volume of the reactor output is drawn off continuously and fed to the formamide working-up stage, and the remainder of the reactor output is cooled, in an external circuit maintained by means of a pump, to from 25 to 60.degree. C and is mixed with the amount of fresh methyl formate required for steady-state operation, after which the appropriate amount of gaseous ammonia is introduced into the stream of liquid through a jet, by the sucking-jet principle, and the stream of liquid is recycled to the reactor.

    摘要翻译: 由甲酸甲酯和气态氨连续制备甲酰胺。 该反应在30-90℃的反应器中进行,5至20体积%的反应器输出连续排出,并送入甲酰胺处理阶段,反应器输出的其余部分被冷却 在通过泵保持的外部电路中,温度为25至60℃,并与稳态操作所需的新鲜甲酸甲酯的量混合,之后将适量的气态氨引入到 液体通过喷射原理通过射流,并且液体流被再循环到反应器中。