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    Method For The Production Of Propene From Propane
    11.
    发明申请
    Method For The Production Of Propene From Propane 审中-公开
    丙烷生产丙烯的方法

    公开(公告)号：US20080207975A1

    公开(公告)日：2008-08-28

    申请号：US11722367

    申请日：2005-12-20

    申请人： Sven Crone ,  Otto Machhammer ,  Gotz-Peter Schindler

    发明人： Sven Crone ,  Otto Machhammer ,  Gotz-Peter Schindler

    IPC分类号： C07C5/00

    CPC分类号： C07C5/3337 ,  C07C7/04 ,  C07C11/06

    摘要： The invention relates to a process for preparing propene from propane, comprising the steps:A) a feed gas stream a comprising propane is provided;B) the feed gas stream a comprising propane and an oxygenous gas stream are fed into a dehydrogenation zone and propane is subjected to a nonoxidative catalytic, autothermal dehydrogenation to propene to obtain a product gas stream b comprising propane, propene, methane, ethane, ethene, nitrogen, carbon monoxide, carbon dioxide, steam and hydrogen;C) product gas stream b is cooled and steam is removed by condensation to obtain a steam-depleted product gas stream c;D) uncondensable or low-boiling gas constituents are removed by contacting product gas stream c with an inert absorbent and subsequently desorbing the gases dissolved in the inert absorbent to obtain a C3 hydrocarbon stream d1 and an offgas stream d2 comprising methane, ethane, ethene, nitrogen, carbon monoxide, carbon dioxide and hydrogen;E) the C3 hydrocarbon stream d1 is cooled and compressed to obtain a liquid C3 hydrocarbon stream e1;F) the liquid C3− hydrocarbon stream e1 is fed into a first distillation zone and separated distillatively into a stream f1 composed of propane and propene and a stream f2 comprising ethane and ethene;G) stream f1 is fed into a (second) distillation zone and separated distillatively into a product stream g1 composed of propene and a stream g2 composed of propane, and stream g2 is recycled at least partly into the dehydrogenation zone.

    摘要翻译： 本发明涉及一种从丙烷制备丙烯的方法，包括以下步骤：A）提供包含丙烷的原料气流a; B）将包含丙烷和含氧气流的原料气流a进料到脱氢区，丙烷经受非氧化催化，自热脱氢至丙烯以获得包含丙烷，丙烯，甲烷，乙烷，乙烯的产物气流b ，氮气，一氧化碳，二氧化碳，蒸气和氢气; C）产物气流b被冷却并通过冷凝除去蒸汽，得到蒸汽消耗产物气流c; D）通过使产物气流c与惰性吸收剂接触并随后将溶解在惰性吸收剂中的气体解吸，得到C 3 N 3烃流d 1和废气，除去不可冷凝或低沸点气体成分 流d 2包含甲烷，乙烷，乙烯，氮气，一氧化碳，二氧化碳和氢气; E）将C 3 C 3烃流d 1冷却并压缩，得到液体C 3烃流e1; F）将液体C 3 - C 3 - 烃流e 1进料到第一蒸馏区并蒸馏分离成由丙烷和丙烯组成的料流f 1和包含乙烷和乙烯的料流f 2; G）流f 1进料到（第二）蒸馏区并蒸馏分离成由丙烯构成的产物流g 1和由丙烷组成的料流g 2，并且流g 2至少部分地再循环到脱氢区中。

    Method for the production of maleic anhydride
    13.
    发明授权
    Method for the production of maleic anhydride 失效
    马来酸酐生产方法

    公开(公告)号：US07345167B2

    公开(公告)日：2008-03-18

    申请号：US10565889

    申请日：2004-07-06

    申请人： Mark Duda ,  Otto Machhammer ,  Alexander Weck

    发明人： Mark Duda ,  Otto Machhammer ,  Alexander Weck

    IPC分类号： C07D307/60

    CPC分类号： C07C51/215 ,  C07C57/145

    摘要： A process for preparing maleic anhydride by oxidizing n-butane in the gas phase under heterogeneous catalysis with oxygen-containing gases over a vanadium-, phosphorus- and oxygen-containing catalyst in a reactor unit at a temperature in the range from 350 to 500° C., removing the maleic anhydride formed to form a gas stream which comprises unconverted n-butane and water and recycling at least a portion of the unconverted n-butane to the reactor unit, by feeding to the reactor unit an inlet stream having an n-butane concentration of from 0.5 to 1.5% by volume and an oxygen concentration of from 5 to 21% by volume, establishing a pressure at the inlet to the reactor unit of from 0.4 to 2 MPa abs, and converting from 40 to 100% of the n-butane from the inlet stream per reactor pass.

    摘要翻译： 在反应器单元中的含钒，含磷和氧的催化剂中，在350〜500℃的温度范围内，用含氧气体在非均相催化下，在气相中氧化正丁烷，制备马来酸酐的方法 C.去除形成的马来酸酐以形成包含未转化的正丁烷和水的气流，并将未转化的正丁烷的至少一部分再循环到反应器单元，通过向反应器单元供给具有n - 丁烷浓度为0.5至1.5体积％，氧浓度为5至21体积％，在反应器单元入口处建立压力为0.4至2MPa abs，并将40至100％ 来自每个反应器的入口流的正丁烷通过。

    Continuous recovery of (meth)acrylic acid
    14.
    发明授权
    Continuous recovery of (meth)acrylic acid 有权

    公开(公告)号：US06350906B1

    公开(公告)日：2002-02-26

    申请号：US09362912

    申请日：1999-07-29

    申请人： Otto Machhammer ,  Peter Zehner ,  Filip Deberdt

    发明人： Otto Machhammer ,  Peter Zehner ,  Filip Deberdt

    IPC分类号： C07C5142

    摘要： A process for the continuous recovery of (meth)acrylic acid from the reaction gases of a catalytic gas-phase oxidation by (I) absorption in a high-boiling solvent, (II) isolation of the (meth)acrylic acid from the mixture with the solvent and, if required, further purification of the (meth)acrylic acid isolated, (III) purification of the solvent and (IV) recycling of the purified solvent to absorption stage (I) is proposed, the temperature in each process stage not exceeding 155° C., in particular 140° C., preferably 120° C.