Preparation of acrolein or acrylic acid or a mixture thereof from propane
    11.
    发明申请
    Preparation of 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

    公开(公告)号:US20060004226A1

    公开(公告)日:2006-01-05

    申请号:US11131248

    申请日:2005-05-18

    IPC分类号: C07C51/25

    摘要: A process for preparing acrolein or acrylic acid or a mixture thereof from propane, in which the propane is initially dehydrogenated under heterogeneous catalysis to give propene, secondary components are removed and the remaining gas mixture, comprising propane and propene, is subjected to the heterogeneously catalyzed partial oxidation to acrolein or acrylic acid or a mixture thereof as the target product, target product is removed from the product gas mixture and the remaining residual gas, comprising excess oxygen and unconverted propane, is recycled into the propane dehydrogenation in such a way that the other propane fed to the dehydrogenation is at least partly converted under dehydrogenating conditions at the recycle point.

    摘要翻译: 从丙烷制备丙烯醛或丙烯酸或其混合物的方法,其中丙烷最初在非均相催化下脱氢以得到丙烯,次要组分被除去,剩余的包含丙烷和丙烯的气体混合物经历非均相催化 部分氧化成丙烯醛或丙烯酸或其混合物作为目标产物,将目标产物从产物气体混合物中除去,剩余的包含过量氧气和未转化的丙烷的残余气体以这样的方式循环到丙烷脱氢中: 进料到脱氢的其它丙烷在再循环点的脱氢条件下至少部分转化。

    Method For The Production Of Propene From Propane
    14.
    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

    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。

    Process For Producing Propylene Oxide
    15.
    发明申请
    Process For Producing Propylene Oxide 有权
    生产环氧丙烷的方法

    公开(公告)号:US20080167484A1

    公开(公告)日:2008-07-10

    申请号:US11994129

    申请日:2006-06-20

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12

    摘要: The present invention relates to a process for producing propylene oxide comprising (I) reacting propene with hydrogen peroxide in the presence of a catalyst to give a mixture (GI) comprising propylene oxide, unreacted propene, and oxygen; (II) separating propylene oxide from mixture (GI) to give a mixture (GII) comprising propene and oxygen; (III) reducing the oxygen comprised in mixture (GII) at least partially by reaction with hydrogen in the presence of a catalyst comprising Sn and at least one noble metal.

    摘要翻译: 本发明涉及一种生产环氧丙烷的方法,其包括(I)在催化剂存在下使丙烯与过氧化氢反应,得到包含环氧丙烷,未反应的丙烯和氧的混合物(GI) (II)将环氧丙烷与混合物(GI)分离,得到包含丙烯和氧的混合物(GII); (III)在包含Sn和至少一种贵金属的催化剂的存在下至少部分地通过与氢反应来还原混合物(GII)中包含的氧。

    Method for the Synthesis of Aromatic Hydrocarbons From C1-C4-Alkanes and Utilization of C1-C4-Alkane-Comprising Product Stream
    17.
    发明申请
    Method for the Synthesis of Aromatic Hydrocarbons From C1-C4-Alkanes and Utilization of C1-C4-Alkane-Comprising Product Stream 审中-公开
    从C1-C4烷烃合成芳香烃的方法和使用C1-C4-烷烃的产品流

    公开(公告)号:US20080293980A1

    公开(公告)日:2008-11-27

    申请号:US12091874

    申请日:2006-10-30

    IPC分类号: C07C15/00

    摘要: The present invention relates to a method for producing an aromatic hydrocarbon from a C1-C4-alkane, or a mixture of C1-C4-alkanes, which comprises a) bringing a feedstock stream A which comprises a C1-C4-alkane, or a mixture of C1-C4-alkanes, into contact with a catalyst and reacting a part of the C1-C4-alkane, or a part of the mixture of the C1-C4-alkanes, to form aromatic hydrocarbon(s); b) fractionating the product stream B resulting from step a) into a low-boiler stream C which comprises the majority of the hydrogen and of the unreacted C1-C4-alkane, or of the mixture of C1-C4-alkanes, and a high-boiler stream D, or a plurality of high-boiler streams D′, which stream or streams comprises or comprise the majority of the aromatic hydrocarbon formed; and c) feeding the low-boiler stream C to a further C1-C4-alkane-consuming method, if appropriate the hydrogen present in the low-boiler stream C being separated off in advance.

    摘要翻译: 本发明涉及一种由C 1 -C 4烷烃或C 1 -C 4烷烃的混合物制备芳族烃的方法,该方法包括:a)将包含C 1 -C 4烷烃的原料流A或 使C1-C4烷烃的混合物与催化剂接触并使部分C1-C4-烷烃或C1-C4-烷烃混合物的一部分反应形成芳族烃; b)将由步骤a)得到的产物流B分馏成包含大部分氢气和未反应的C 1 -C 4烷烃或C 1 -C 4烷烃混合物的低沸点料流C和高 - 沸腾物流D或多个高沸点物流D',其流或物流包含或包含形成的大部分芳族烃; 并且c)如果适当,将低沸点物流C进料到另外的C1-C4-烷烃消耗方法中,预先分离出低沸点物流C中存在的氢。

    Method for the production of butadiene
    18.
    发明申请
    Method for the production of butadiene 有权
    生产丁二烯的方法

    公开(公告)号:US20070179330A1

    公开(公告)日:2007-08-02

    申请号:US10584785

    申请日:2004-12-30

    IPC分类号: C07C5/333 C07C2/00

    CPC分类号: C07C5/333 C07C5/48 C07C11/167

    摘要: The invention relates to a process for preparing butadiene from n-butane having the steps of A) providing a feed gas stream a comprising n-butane; B) feeding the feed gas stream a comprising n-butane into at least one first dehydrogenation zone and nonoxidatively catalytically dehydrogenating n-butane to obtain a product gas stream b comprising n-butane, 1-butene, 2-butene, butadiene, hydrogen, low-boiling secondary constituents and in some cases steam; C) feeding the product gas stream b of the nonoxidative catalytic dehydrogenation and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butene to obtain a product gas stream c comprising n-butane, 2-butene, butadiene, hydrogen, low-boiling secondary constituents and steam, said product gas stream c having a higher content of butadiene than the product gas stream b; D) removing hydrogen, the low-boiling secondary constituents and steam to obtain a C4 product gas stream d substantially consisting of n-butane, 2-butene and butadiene; E) feeding the C4 product gas stream d into a distillation zone and removing a butadiene/butane mixture as the product of value stream e1, to leave a stream e2 consisting substantially of n-butane and 2-butene; F) recycling the stream e2 into the first dehydrogenation zone.

    摘要翻译: 本发明涉及一种从正丁烷制备丁二烯的方法,该方法具有以下步骤:A)提供包含正丁烷的进料气流a; B)将包含正丁烷的进料气流(a)进料到至少一个第一脱氢区和非氧化催化脱氢的正丁烷中,以获得包含正丁烷,1-丁烯,2-丁烯,丁二烯,氢, 低沸点次生成分,有时还有蒸汽; C)将非氧化催化脱氢的产物气流b和氧气输送到至少一个第二脱氢区,并使1-丁烯和2-丁烯氧化脱氢得到包含正丁烷,2-丁烯, 丁二烯,氢,低沸点二次成分和蒸汽,所述产物气流c具有比产物气流b更高含量的丁二烯; D)除去氢气,低沸点次级组分和蒸汽,得到基本上由正丁烷,2-丁烯和丁二烯组成的C 4 H 4产物气流d; E)将C 4 H 4产物气流d进料到蒸馏区中并除去作为值流e1的产物的丁二烯/丁烷混合物,以留下基本上由正丁烷和2- 丁烯 F)将流e2再循环到第一脱氢区。