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    • 1. 发明授权
    • Preparation of phthalic anhydride by gas phase oxidation of o-xylene
    • 通过邻二甲苯的气相氧化制备邻苯二甲酸酐
    • US08153825B2
    • 2012-04-10
    • US12301352
    • 2007-05-18
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • C07D307/89
    • C07D307/89C07C51/265C07C63/16
    • A process is described for preparing phthalic anhydride by catalytic gas phase oxidation of o-xylene, in, in a main reactor, a gaseous mixture of o-xylene and an oxygenous gas is passed through at least two reaction zones whose temperature can be controlled independently, and converted to a gaseous intermediate reaction product which comprises unconverted o-xylene, phthalic anhydride underoxidation products and phthalic anhydride, and the intermediate reaction product is introduced into a postreactor, wherein the temperature of the reaction zones in the main reactor is regulated in such a way that the concentration of unconverted o-xylene in the intermediate reaction product is at least 0.5% by weight. The process allows an increase in the overall yield of phthalic anhydride without or without significant deterioration in the product quality.
    • 描述了通过邻二甲苯的催化气相氧化制备邻苯二甲酸酐的方法,在主反应器中,邻二甲苯和氧气的气态混合物通过至少两个温度可独立控制的反应区 并转化为包含未转化的邻二甲苯,邻苯二甲酸酐未氧化产物和邻苯二甲酸酐的气态中间反应产物,将中间反应产物引入后反应器中,其中主反应器中的反应区的温度如此调节 在中间反应产物中未转化的邻二甲苯的浓度为至少0.5重量%的方式。 该方法允许邻苯二甲酸酐的总产率提高,而不会产生质量的显着劣化。
    • 3. 发明授权
    • Preparation of phthalic anhydride by gas phase oxidation of O-xylene in a main reactor and postreactor
    • 在主反应器和后反应器中通过气相氧化邻二甲苯制备邻苯二甲酸酐
    • US08106220B2
    • 2012-01-31
    • US12301370
    • 2007-05-18
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • C07D307/89
    • C07D307/89C07C51/265C07C63/16
    • A process is described for preparing phthalic anhydride by catalytic gas phase oxidation of o-xylene, in which a gaseous mixture of o-xylene and an oxygenous gas is converted in a main reactor to a gaseous intermediate reaction product which comprises unconverted o-xylene, phthalic anhydride underoxidation products and phthalic anhydride, the heat of reaction which arises in the main reactor being removed at least partly by indirect cooling with a heat carrier medium, and the intermediate reaction product being introduced into a postreactor. The concentration of unconverted o-xylene in the intermediate reaction product is at least 1% by weight, and the sum of the concentrations of phthalic anhydride underoxidation products in the intermediate reaction product is at least 0.5% by weight. The process allows an increase in the overall yield of phthalic anhydride without or without significant deterioration in the product quality.
    • 描述了通过邻二甲苯的催化气相氧化制备邻苯二甲酸酐的方法,其中邻二甲苯和氧气的气体混合物在主反应器中转化为包含未转化的邻二甲苯的气态中间体反应产物, 邻苯二甲酸酐脱氧产物和邻苯二甲酸酐,至少部分通过用载热介质间接冷却除去主反应器中产生的反应热,并将中间反应产物引入后反应器中。 中间反应产物中未转化的邻二甲苯的浓度为至少1重量%,中间反应产物中邻苯二甲酸酐未氧化产物的浓度之和为至少0.5重量%。 该方法允许邻苯二甲酸酐的总产率提高,而不会产生质量的显着劣化。
    • 5. 发明申请
    • Method for the continuous production of aldehydes
    • 连续生产醛的方法
    • US20070004939A1
    • 2007-01-04
    • US10575843
    • 2004-10-14
    • Martin VollandThomas MackewitzWolfgang AhlersAnsgar SchaferWolfgang RichterRocco Paciello
    • Martin VollandThomas MackewitzWolfgang AhlersAnsgar SchaferWolfgang RichterRocco Paciello
    • C07C45/50
    • B01J31/186B01J2231/321B01J2531/822C07C45/50C07C47/02
    • The invention relates to a method for the continuous production of aldehydes comprising between 5 and 21 carbon atoms, by the isomerising hydroformylation in a homogenous phase of olefin compositions comprising between 4 and 20 carbon atoms and containing α-olefins and olefins with internal double bonds, by means of a synthesis gas, in the presence of a homogeneous rhodium catalyst that is complexed with an organophosphorus ligand containing oxygen atoms and/or nitrogen atoms and a free ligand. Said production is carried out at high temperature and high pressure in a multi-stage reaction system consisting of at least two reaction zones. According to said method, the olefin composition is first reacted in a first reaction zone or a group of several first reaction zones at a total pressure of between 10 and 40 bar, using a synthesis gas with a CO/H2 molar ratio of between 4:1 and 1:2 until a 40 to 95% conversion of the α-olefins is obtained. The hydroformylation product from the first reaction zone or group of several first reaction zones is then reacted in a subsequent reaction zone or group of several reaction zones at a total pressure of between 5 and 30 bar, using a synthesis gas with a CO/H2 molar ratio of between 1:4 and 1:1000. The total pressure in the subsequent reaction zone or zones is respectively 1 to (G1−Gf) bar lower than that of the preceding reaction zone, whereby G1 represents the total pressure in the respective preceding reaction zone and Gf represents the total pressure in the respective reaction zone that succeeds said first reaction zone or zones, with the proviso that the difference between G1 and Gf is greater than 1 bar and the partial CO pressure in the subsequent reaction zone or zones is respectively lower than that of the preceding reaction zone.
    • 本发明涉及通过在包含4至20个碳原子并含有具有内部双键的α-烯烃和烯烃的烯烃组合物的均质相中的异构化加氢甲酰化来连续生产含有5至21个碳原子的醛的方法, 在与含有氧原子和/或氮原子的有机磷配体和游离配体络合的均匀的铑催化剂的存在下,通过合成气。 所述生产在由至少两个反应区组成的多级反应体系中在高温高压下进行。 根据所述方法,首先使用具有CO / H 2 O 2的合成气在第一反应区或一组几个第一反应区中以10至40巴的总压力反应烯烃组合物, 的摩尔比在4:1和1:2之间,直到获得40-95%的α-烯烃转化率。 然后使用具有CO / H 2的合成气使来自第一反应区或几个第一反应区的组的加氢甲酰化产物在随后的反应区或几个反应区的组中以5至30巴的总压力反应, 1摩尔比为1:4-1:1000。 后续反应区域或区域中的总压力分别比前述反应区域低1〜(G1-Gf)巴,由此G1表示前述反应区域中的总压力,Gf表示相应的 所述第一反应区或区域成功的反应区,条件是G 1和G f之间的差大于1巴,并且后续反应区或区中的部分CO压力分别低于前述反应区。
    • 9. 发明申请
    • PREPARATION OF PHTHALIC ANHYDRIDE BY GAS PHASE OXIDATION OF O-XYLENE IN A MAIN REACTOR AND POSTREACTOR
    • 通过气相氧化在主反应器和载体中制备邻苯二甲酸二异氰酸酯
    • US20090156835A1
    • 2009-06-18
    • US12301370
    • 2007-05-18
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • C07D307/89
    • C07D307/89C07C51/265C07C63/16
    • A process is described for preparing phthalic anhydride by catalytic gas phase oxidation of o-xylene, in which a gaseous mixture of o-xylene and an oxygenous gas is converted in a main reactor to a gaseous intermediate reaction product which comprises unconverted o-xylene, phthalic anhydride underoxidation products and phthalic anhydride, the heat of reaction which arises in the main reactor being removed at least partly by indirect cooling with a heat carrier medium, and the intermediate reaction product being introduced into a postreactor. The concentration of unconverted o-xylene in the intermediate reaction product is at least 1% by weight, and the sum of the concentrations of phthalic anhydride underoxidation products in the intermediate reaction product is at least 0.5% by weight. The process allows an increase in the overall yield of phthalic anhydride without or without significant deterioration in the product quality.
    • 描述了通过邻二甲苯的催化气相氧化制备邻苯二甲酸酐的方法,其中邻二甲苯和氧气的气体混合物在主反应器中转化为包含未转化的邻二甲苯的气态中间体反应产物, 邻苯二甲酸酐脱氧产物和邻苯二甲酸酐,至少部分通过用载热介质间接冷却除去主反应器中产生的反应热,并将中间反应产物引入后反应器中。 中间反应产物中未转化的邻二甲苯的浓度为至少1重量%,中间反应产物中邻苯二甲酸酐未氧化产物的浓度之和为至少0.5重量%。 该方法允许邻苯二甲酸酐的总产率提高,而不会产生质量的显着劣化。