Method for the purification of acrolein
    66.
    发明授权
    Method for the purification of acrolein 有权
    丙烯醛纯化方法

    公开(公告)号:US07531066B2

    公开(公告)日:2009-05-12

    申请号:US10500715

    申请日:2003-02-12

    IPC分类号: B01D3/00 C07C47/22 C07C45/82

    摘要: A process for purifying an aqueous solution to obtain purified gaseous acrolein by introducing the aqueous solution into a distillation column equipped at its base with at least one boiler and at its top with at least one condenser, withdrawing a liquid mixture essentially containing water at the base of the distillation column, withdrawing a gas essentially containing acrolein and water at the top of the distillation column, cooling the gas mixture withdrawn at the top of the distillation column in the condenser, to a temperature which makes it possible to obtain, on the one hand, an aqueous condensate and, on the other hand, an acrolein-rich gas mixture, and withdrawing the acrolein-rich gas mixture.

    摘要翻译: 通过将水溶液引入到其底部装备有至少一个锅炉的蒸馏塔中并且在其顶部具有至少一个冷凝器来提纯水溶液以获得纯化的气态丙烯醛的方法,将基本上含有水的液体混合物 在蒸馏塔的顶部排出基本上含有丙烯醛和水的气体,将冷凝器中蒸馏塔顶部排出的气体混合物冷却到一个温度,从而可以在一个温度下获得 另一方面,富含丙烯醛的气体混合物,并且抽出富含丙烯醛的气体混合物。

    Process for preparing acrolein or acrylic acid or a mixture thereof from propane
    67.
    发明授权
    Process for preparing acrolein or acrylic acid or a mixture thereof from propane 有权
    从丙烷制备丙烯醛或丙烯酸或其混合物的方法

    公开(公告)号:US07524987B2

    公开(公告)日:2009-04-28

    申请号:US11505800

    申请日:2006-08-18

    摘要: A process for preparing acrolein, or acrylic acid or a mixture thereof as a target product from propane, in which propane is partially dehydrogenated under heterogeneous catalysis in a reaction zone A, molecular hydrogen thus formed is incinerated partly to water and the product gas A thus formed in reaction zone A is used without secondary component removal to charge a reaction zone B in which propylene present in product gas A is partially oxidized to the target product. From the product gas B formed in reaction zone B, the target product is removed and the residual gas I remaining after an aftertreatment comprising a CO2 scrubbing and a partial discharge thereof is recycled into reaction zone A.

    摘要翻译: 制备丙烯醛或丙烯酸或其混合物作为丙烷的目标产物的方法,其中丙烷在反应区A中在非均相催化下部分脱氢,因此形成的分子氢部分地被焚烧成水,产物气A因此 在反应区A中形成的反应区A被使用,而不需要除去二次分量,从而向产物气体A中存在的丙烯部分氧化成目标产物的反应区B进行充电。 从反应区B中形成的产物气体B中,除去目标产物,并且在包括CO 2洗涤和部分排放的后处理之后残留的残留气体I再循环到反应区域A.