Process for preparing acrolein or acrylic acid or a mixture thereof from propane
    32.
    发明申请
    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:US20070117998A1

    公开(公告)日:2007-05-24

    申请号:US11505800

    申请日:2006-08-18

    IPC分类号: C07C51/16

    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。 从在反应区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余气体I再循环到反应区A中。

    Integrated method for synthesis propylene oxide
    33.
    发明授权
    Integrated method for synthesis propylene oxide 有权
    合成环氧丙烷的综合方法

    公开(公告)号:US07173143B2

    公开(公告)日:2007-02-06

    申请号:US10526045

    申请日:2003-08-29

    IPC分类号: C07D301/12

    摘要: The present invention relates to an integrated process for the synthesis of propylene oxide, which comprises at least the following steps: (i) dehydrogenation of propane to give a substream T(0) comprising at least propane, propene and hydrogen; (ii) fractionation of the substream T(0) to give at least one gaseous hydrogen-rich substream T(2) and a substream T(1) comprising at least propene and propane; (iii) synthesis of hydrogen peroxide using the substream T(2), giving a substream T (4) which is rich in hydrogen peroxide and a gaseous substream T(6); (iv) fractionation of the substream T(1) to give at least one propane-rich substream T(5) and at least one propene-rich substream T(3); (v) reaction of the at least one substream T(3) with substream T(4) to give propylene oxide.

    摘要翻译: 本发明涉及一种用于合成环氧丙烷的综合方法,其包括至少以下步骤:(i)丙烷脱氢得到至少包含丙烷,丙烯和氢的分支T(O); (ii)分流T(0)以产生至少一个富含气体的气流T(2)和至少包含丙烯和丙烷的子流T(1); (iii)使用子流T(2)合成过氧化氢,得到富含过氧化氢的气流T(4)和气态分支T(6); (iv)分流T(1)以产生至少一个富含丙烷的子流T(5)和至少一个富含丙烯的子流T(3); (v)至少一个子流T(3)与子流T(4)的反应,得到环氧丙烷。

    Method for producing acrylic acid and acrylic acid esters
    35.
    发明授权
    Method for producing acrylic acid and acrylic acid esters 有权
    制备丙烯酸和丙烯酸酯的方法

    公开(公告)号:US06727383B1

    公开(公告)日:2004-04-27

    申请号:US09647561

    申请日:2000-10-02

    IPC分类号: C07C5142

    摘要: A process for preparing acrylic acid and/or acrylates which comprises the following stage A and, if desired, B and C: A: cooling a gaseous reaction mixture which comprises acrylic acid and is obtained in the gas-phase oxidation to prepare acrylic acid, using oligomeric acrylic acid or a mixture of acrylic acid and oligomeric acrylic acid, to give a gaseous mixture comprising acrylic acid and a quench bottom product which comprises oligomeric acrylic acid; B: separating the gaseous mixture comprising acrylic acid, to give a low-boiling fraction, a crude acrylic acid, and a bottom product, which comprises oligomeric acrylic acid; C: esterifying the crude acrylic acid obtained in stage B by means of one or more alkanols.

    摘要翻译: 一种制备丙烯酸和/或丙烯酸酯的方法,其包括以下阶段A以及如果需要,B和C:A:冷却包含丙烯酸并在气相氧化中获得的气态反应混合物以制备丙烯酸, 使用低聚丙烯酸或丙烯酸和低聚丙烯酸的混合物,得到包含丙烯酸和骤冷底部产物的气体混合物,其包含低聚丙烯酸; B:将包含丙烯酸的气态混合物分离,得到低沸点 馏分,粗丙烯酸和底部产物,其包含低聚丙烯酸; C:通过一种或多种链烷醇酯化在阶段B中获得的粗丙烯酸。