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    Method for the production of acrolein, acrylic acid, or a mixture thereof from propane
    42.
    发明专利
    Method for the production of acrolein, acrylic acid, or a mixture thereof from propane 未知

    公开(公告)号：ZA200700833B

    公开(公告)日：2008-10-29

    申请号：ZA200700833

    申请日：2007-01-30

    Applicant: BASF AG

    Inventor： MACHHAMMER OTTO ,  SCHINDLER GOTZ-PETER ,  ADAMI CHRISTOPH ,  HECHLER CLAUS ,  DIETERLE MARTIN

    IPC: C07C20090101 ,  C07C45/35 ,  C07C51/25

    Abstract: 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.

    44.
    发明专利
    未知

    公开(公告)号：BRPI0418085A

    公开(公告)日：2007-04-17

    申请号：BRPI0418085

    申请日：2004-12-21

    Applicant: BASF AG

    Inventor： HECHLER CLAUS ,  OLBERT GERHARD ,  WEN DIETMAR L

    IPC: C07C57/05 ,  C07C45/35 ,  C07C51/16 ,  C07C51/21 ,  C07C51/235

    Abstract: A process is proposed for preparing (meth)acrolein and/or (meth)acrylic acid by partially oxidizing C 3 and/or C 4 precursor compounds in the gas phase in the presence of a heterogeneous particulate catalyst, in a reactor having two or more thermoplates ( 1 ) arranged vertically and parallel to each other while in each case leaving a gap ( 2 ), the heterogeneous particulate catalyst being installed in the gaps ( 2 ) and the gaseous reaction mixture being passed through the gaps ( 2 ), which comprises monitoring, controlling and/or regulating the process by selecting as a monitoring, control and/or regulation parameter one or more temperatures which are measured in one or more gaps ( 2 ), at one or more measurement points which are distributed over the height of each gap ( 2 ).

    Preparation of acrolein or acrylic acid involves conducting starting reaction gas mixture having propylene and molecular oxygen reactants and inert molecular nitrogen and propane diluent gasses through fixed catalyst bed
    45.
    发明专利
    Preparation of acrolein or acrylic acid involves conducting starting reaction gas mixture having propylene and molecular oxygen reactants and inert molecular nitrogen and propane diluent gasses through fixed catalyst bed 未知

    公开(公告)号：DE102005009891A1

    公开(公告)日：2006-09-07

    申请号：DE102005009891

    申请日：2005-03-01

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  MUELLER-ENGEL KLAUS-JOACHIM ,  HECHLER CLAUS ,  HAMMON ULRICH ,  DIEFENBACHER ARMIN

    IPC: C07C57/05 ,  C07C57/07 ,  C08F20/06

    Abstract: Acrolein or acrylic acid is prepared by catalyzing partial gas phase oxidation of propene, where a starting reaction gas mixture having propylene and molecular oxygen reactants and inert molecular nitrogen and propane diluent gasses is conducted at elevated temperature through a fixed catalyst bed whose active composition is a multimetal oxide having molybdenum, iron and bismuth. Preparation of acrolein or acrylic acid involves catalyzing partial gas phase oxidation of propene, where a starting reaction gas mixture having propylene and molecular oxygen reactants and the inert molecular nitrogen and propane diluent gasses and having the molecular oxygen and the propylene in a molar oxygen;C 3H 6 ratio of >=1 is conducted at elevated temperature through a fixed catalyst bed whose active composition is a multimetal oxide having molybdenum, iron and bismuth based on its total volume of 6-9 vol.% propylene, 8-18 vol.% molecular oxygen. 6-30 vol.% propane and 32-72 vol.% molecular nitrogen. The molar ratio V 1 of propane in starting reaction gas mixture to propylene in starting reaction gas mixture is 1-4. The molar V 2 of molecular nitrogen present in starting reaction gas mixture to molecular oxygen in starting reaction the mixture is 2-6, and the molar ratio of the molecular oxygen in starting reaction gas mixture to propylene in starting reaction mixture is 1.3-2.4.

    Method for the production of at least one partial propylene oxidation and/or ammoxidation product
    46.
    发明专利
    Method for the production of at least one partial propylene oxidation and/or ammoxidation product 未知

    公开(公告)号：ZA200503358B

    公开(公告)日：2006-07-26

    申请号：ZA200503358

    申请日：2005-04-26

    Applicant: BASF AG

    Inventor： ADAMI CHRISTOPH ,  HECHLER CLAUS ,  SCHINDLER GOETZ-PETER ,  PETZOLDT JOCHEN ,  MACHHAMMER OTTO ,  MUELLER-ENGEL KLAUS J ,  MARTAN HANS

    IPC: C07C20060101 ,  C07C7/05 ,  C07C47/22 ,  C07C57/04 ,  C07C253/18 ,  C07C255/08 ,  C07D20060101 ,  C07D301/08 ,  C07D303/04

    Abstract: Preparation of at least one partial oxidation and/or ammoxidation product of propylene involves subjecting crude propylene (prepared by dehydrogenation or oxydehydrogenation in the presence and/or absence of oxygen) in the presence of unconverted propane as a constituent of a gas mixture 2 which comprises a total 4C-hydrocarbon content of at most 3 vol.%, to a heterogeneously catalyzed gas phase partial oxidation and/or ammoxidation. Preparation of at least one partial oxidation and/or ammoxidation product of propylene involves: (a) subjecting crude propane in the presence of and/or absence of oxygen to a homogeneously and/or a heterogeneously catalyzed dehydrogenation and/or oxydehydrogenation to obtain a propane- and propylene-containing gas mixture 1; (b) optionally removing and/or converting to other compounds a portion of the constituents other than propane and propylene contained in the gas mixture 1 to obtain a gas mixture 1' comprising propane and propylene and also compounds other than oxygen, propane and propylene; and (c) subjecting gas mixture 1 and/or gas mixture 1' as a constituent of a gas mixture 2 to a heterogeneously catalyzed gas phase partial oxidation and/or partial gas phase ammoxidation of propylene contained in gas mixture 1 and/or 1'. The total content of 4C-hydrocarbons of gas mixture 2 is at most 3 vol.%.

    47.
    发明专利
    未知

    公开(公告)号：DE50008266D1

    公开(公告)日：2004-11-18

    申请号：DE50008266

    申请日：2000-10-31

    Applicant: BASF AG

    Inventor： TENTEN ANDREAS ,  HIBST HARTMUT ,  MACHHAMMER OTTO ,  HECHLER CLAUS ,  MUELLER-ENGEL JOACHIM ,  UNVERRICHT SIGNE

    IPC: C07C51/215 ,  C07B61/00 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05

    Abstract: In a process for the two-stage catalytic gas-phase oxidation of propene to acrylic acid, the reaction gas starting mixture is passed, in a tube-bundle reactor, with a propene loading of >=160 l (S.T.P.) of propene/l.h, first over a fixed catalyst bed 1 present in two successive temperature zones A, B and then over a fixed catalyst bed 2 which is housed either in one further temperature zone C or in two further temperature zones D, E, the temperature of the zone A being kept at a lower temperature than the zone B and the temperature of the zone D at a lower temperature than the zone E.

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