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    METHOD FOR PREVENTING FUMARIC ACID DEPOSITS IN THE PRODUCTION OF MALEIC ACID ANHYDRIDE
    1.
    发明申请
    METHOD FOR PREVENTING FUMARIC ACID DEPOSITS IN THE PRODUCTION OF MALEIC ACID ANHYDRIDE 审中-公开
    在制备马来酸酐时防止含氟酸沉积物的方法

    公开(公告)号：US20090143601A1

    公开(公告)日：2009-06-04

    申请号：US12300571

    申请日：2007-05-16

    申请人： Rolf Pinkos ,  Gerd Kaibel ,  Ellen Dahlhoff ,  Gunther Windecker ,  Jens Heimann

    发明人： Rolf Pinkos ,  Gerd Kaibel ,  Ellen Dahlhoff ,  Gunther Windecker ,  Jens Heimann

    IPC分类号： C07D307/60

    CPC分类号： C07C51/573 ,  C07C57/145

    摘要： The present invention provides a process for preventing fumaric acid deposits in the preparation of maleic anhydride, comprising the following steps:a) absorption of a C4-dicarboxylic acid or of a derivative from a crude product mixture into an organic solvent or water as an absorbent,b) removal of the C4-dicarboxylic acid or of a derivative from the absorbent,the absorbent thus recovered being catalytically hydrogenated fully or partly and recycled fully or partly into the absorption stage (a).

    摘要翻译： 本发明提供了一种在制备马来酸酐中防止富马酸沉积的方法，包括以下步骤：a）将C4-二羧酸或衍生物从粗产物混合物中吸收到作为吸收剂的有机溶剂或水中 b）从吸收剂中除去C4-二羧酸或衍生物，这样回收的吸收剂被完全或部分催化氢化，或者完全或部分地再循环到吸收阶段（a）中。

    Method for the production of defined mixtures of THF, BDO and GBL by gas phase hydrogenation
    4.
    发明授权
    Method for the production of defined mixtures of THF, BDO and GBL by gas phase hydrogenation 失效
    通过气相氢化制备THF，BDO和GBL的限定混合物的方法

    公开(公告)号：US07442810B2

    公开(公告)日：2008-10-28

    申请号：US10581074

    申请日：2004-12-04

    申请人： Markus Roesch ,  Rolf Pinkos ,  Michael Hesse ,  Stephan Schlitter ,  Henrik Junicke ,  Olga Schubert ,  Alexander Weck ,  Gunther Windecker

    发明人： Markus Roesch ,  Rolf Pinkos ,  Michael Hesse ,  Stephan Schlitter ,  Henrik Junicke ,  Olga Schubert ,  Alexander Weck ,  Gunther Windecker

    IPC分类号： C07D307/00 ,  C07D307/02

    CPC分类号： C07D307/33 ,  C07D307/08

    摘要： A process for variably preparing mixtures of optionally alkyl-substituted BDO, GBL and THF by two-stage hydrogenation in the gas phase of C4 dicarboxylic acids and/or derivatives thereof, which comprises a) hydrogenating in a gas phase a gas stream of C4 dicarboxylic acids and/or derivatives thereof over a particular catalyst at a particular pressure and temperature to give a stream mainly containing of optionally alkyl-substituted GBL and THF, b) removing any succinct anhydride, c) converting the products remaining predominantly in the gas phase in the partial condensation, THF, water and GBL to give a stream comprising a mixture of BDO, GBL and THF, d) removing the hydrogen from the products and recycling it into the hydrogenation, e) distillatively separating the products, THF, BDO, GBL and water, if appropriate recycling a GBL-rich stream or if appropriate discharging it, and working up BDO, THF and GBL distillatively, and setting the ratio of the products, THF, GBL and BDO, relative to one another within the range from 10 to 100% by weight of THF, from 0 to 90% by weight of GBL and from 0 to 90% by weight of BDO only by varying the temperatures in the two hydrogenation zones and also if appropriate the GBL recycle stream.

    摘要翻译： 一种在可能地制备任选烷基取代的BDO，GBL和THF的混合物的方法，其通过在C 4 C 4羧酸和/或其衍生物的气相中进行两步氢化，其包括a）在 在特定的压力和温度下，将特定催化剂上的C 4 O 2羧酸和/或其衍生物的气流气相，得到主要含有烷基取代的GBL和THF的物流，b）除去 任何简单的酸酐，c）将部分冷凝，THF，水和GBL中主要保留在气相中的产物进行转化，得到包含BDO，GBL和THF的混合物的流，d）从产物中除去氢并将其再循环 进入氢化，e）蒸馏分离产物，THF，BDO，GBL和水，如果适当回收富含GBL的物流或适当排放，并蒸馏处理BDO，THF和GBL，并设定产物的比例 ，TH F，GBL和BDO相对于10重量％至100重量％的THF，0至90重量％的GBL​​和0至90重量％的BDO，仅通过改变两者中的温度 加氢区，如果合适的话也可以使用GBL再循环流。

    Method for the production of defined mixtures of thf, bdo and gbl by gas phase hydrogenation
    10.
    发明申请
    Method for the production of defined mixtures of thf, bdo and gbl by gas phase hydrogenation 失效

    公开(公告)号：US20070135650A1

    公开(公告)日：2007-06-14

    申请号：US10581074

    申请日：2004-12-04

    申请人： Markus Rosch ,  Rolf Pinkos ,  Michael Hesse ,  Stephan Schlitter ,  Henrik Junicke ,  Olga Schubert ,  Alexander Weck ,  Gunther Windecker

    发明人： Markus Rosch ,  Rolf Pinkos ,  Michael Hesse ,  Stephan Schlitter ,  Henrik Junicke ,  Olga Schubert ,  Alexander Weck ,  Gunther Windecker

    IPC分类号： C07D307/02

    CPC分类号： C07D307/33 ,  C07D307/08

    摘要： The present invention provides a process for variably preparing mixtures of optionally alkyl-substituted BDO, GBL and THF by two-stage hydrogenation in the gas phase of C4 dicarboxylic acids and/or derivatives thereof, which comprises a) in a first step in the gas phase, hydrogenating a gas stream of C4 dicarboxylic acids and/or derivatives thereof over a catalyst at a pressure of from 2 to 100 bar and a temperature of from 200° C. to 300° C. in a first reactor in the presence of a catalyst in the form of shaped catalyst bodies having a volume of less than 20 mm3, said catalyst from 5 to 95% by weight of oxide of copper and from 5 to 95% by weight of an oxide having acidic sites, to give a stream mainly containing of optionally alkyl-substituted GBL and THF, b) removing any succinic anhydride formed by partial condensation, c) converting the products remaining predominantly in the gas phase in the partial condensation, THF, water and GBL, under the same pressure or under a pressure reduced by the pressure drops in the hydrogenation circuit and at a temperature of from 150 to 240° C., in a second reactor over a catalyst which ≦95% by weight of CuO and from 5 to 95% by weight of one or more oxides selected from the group of ZnO, Al2O3, SiO2, TiO2, ZrO2, CeO2, MgO, CaO, SrO, BaO, La2O3 and Mn2O3 to give a stream comprising a mixture of BDO, GBL and THF, d) removing the hydrogen from the products and recycling it into the hydrogenation, e) distillatively separating the products, THF, BDO, GBL and water, if appropriate recycling a GBL-rich stream into the second reactor or if appropriate discharging it, and working up BDO, THF and GBL distillatively, and setting the ratio of the products, THF, GBL and BDO, relative to one another within the range from 10 to 100% by weight of THF, from 0 to 90% by weight of GBL and from 0 to 90% by weight of BDO only by varying the temperatures in the two hydrogenation zones and also if appropriate the GBL recycle stream.