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    1.
    发明专利
    未知

    公开(公告)号：AT362909T

    公开(公告)日：2007-06-15

    申请号：AT04722167

    申请日：2004-03-20

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  PETZOLDT JOCHEN ,  ARNOLD HEIKO ,  RUPPEL WILHELM ,  MUELLER-ENGEL KLAUS

    IPC: C07C57/055 ,  C07C51/25

    Abstract: The invention relates to a method for the heterogeneously catalysed partial gas phase oxidation of acrolein to form acrylic acid, whereby the initial mixture of reaction gas is oxidised on a fixed-bed catalyst bed which consists of at least two fixed-bed catalyst bed zones and is arranged in two successive temperature zones A and B. The transition from temperature zone A to temperature zone B does not coincide with a transition from a fixed-bed catalyst bed zone to another fixed-bed catalyst bed zone.

    Production of methacrylic acid from isobutane comprises formation of methacrolein using a specified molar ratio of oxygen to nitrogen followed by further oxidation to methacrylic acid.
    4.
    发明专利
    Production of methacrylic acid from isobutane comprises formation of methacrolein using a specified molar ratio of oxygen to nitrogen followed by further oxidation to methacrylic acid. 未知

    公开(公告)号：DE10219685A1

    公开(公告)日：2003-11-13

    申请号：DE10219685

    申请日：2002-05-02

    Applicant: BASF AG

    Inventor： BERNDT SILKE ,  MUELLER-ENGEL KLAUS ,  SCHINDLER GOETZ-PETER ,  ROSOWSKI FRANK ,  PETZOLDT JOCHEN

    IPC: C07C51/25 ,  C07C57/05

    Abstract: Production of methacrylic acid from isobutane comprises partial dehydrogenation of isobutane, separation of isobutane and isobutene and catalyzed partial oxidation of isobutene with molecular oxygen in the gas phase to form a methacrolein containing product mixture. A process for the production of methacrylic acid from isobutane comprises: (A) partial, selective, heterogeneously catalyzed dehydrogenation of isobutane in the gas phase in a reaction zone (A) to form a mixture of isobutene and unreacted isobutane; (B) transport of the gas mixture to a reaction zone (B) followed by a selective heterogeneously catalyzed partial oxidation with molecular oxygen in the gas phase to form a methacrolein containing product mixture whereby the molar conversion of isobutene is at least 95 mol.% (C) the methacrolein containing product mixture from (B) is transferred to a reaction zone (C), without separation of the components, to undergo a selective heterogeneously catalyzed partial oxidation with molecular oxygen in the gas phase to form a methacrylic acid containing product mixture and is characterized in that components in the reaction mixture from (A) other than isobutane and isobutene are separated off to at least 80 mol.% and that the molar ratio of molecular oxygen to molecular nitrogen in reaction zone (B) is 1:1-1:10.

    Production of acrolein, useful as intermediate for glutardialdehyde, methionine, folic acid and acrylic acid, by catalytic oxidation of propene uses 2 consecutive reactors operating outside explosion range
    6.
    发明专利
    Production of acrolein, useful as intermediate for glutardialdehyde, methionine, folic acid and acrylic acid, by catalytic oxidation of propene uses 2 consecutive reactors operating outside explosion range 未知

    公开(公告)号：DE19902562A1

    公开(公告)日：2000-07-27

    申请号：DE19902562

    申请日：1999-01-22

    Applicant: BASF AG

    Inventor： ZEHNER PETER ,  MACHHAMMER OTTO ,  ARNOLD HEIKO ,  MUELLER-ENGEL KLAUS

    IPC: C07C45/35 ,  C07C51/25 ,  C07C47/22

    Abstract: A mixture containing propene and oxygen (O2) is passed at elevated temperature through: (i) a zone containing a first catalyst in the solid aggregate state to oxidize part of the propene to acrolein at a propene/O2 molar ratio of over 1 and (ii) other zone(s) with solid catalyst, with addition of O2, so that >= 90 mole-% of the propene reacts with \- 80 mole-% selectivity to acrolein. In the production of acrolein by gas phase partial oxidation of propene with oxygen (O2) over a heterogeneous catalyst in the solid aggregate state: (i) a mixture containing propene and O2 in over 1:1 molar ratio is passed at elevated temperature through a first reaction zone containing a first catalyst in the solid aggregate state to oxidize part of the propene to acrolein, then (ii) the reaction mixture is passed at elevated temperature through other reaction zone(s) with a solid catalyst charge, with addition of (gas containing) O2 in at least one of the later zones to increase the O2/propene molar ratio, so that >= 90 mole-% of the propene fed to zone I reacts with \- 80 mole-% selectivity to acrolein. Independent claims are also included for (a) the production of acrylic acid from propene, including this process; (b) apparatus for the gas phase oxidation of propene to acrolein; (c) apparatus for the gas phase oxidation of propene to acrolein and then of acrolein to acrylic acid.

    СПОСОБ СНИЖЕНИЯ ТЕМПЕРАТУРЫ ГОРЯЧЕЙ ТОЧКИ НЕПОДВИЖНОГО СЛОЯ КАТАЛИЗАТОРА В ПРОЦЕССЕ ПОЛУЧЕНИЯ АКРИЛОВОЙ КИСЛОТЫ ПУТЕМ ДВУХСТАДИЙНОГО СПОСОБА ГЕТЕРОГЕННО КАТАЛИЗИРУЕМОГО ЧАСТИЧНОГО ОКИСЛЕНИЯ В ГАЗОВОЙ ФАЗЕ ПРОПИЛЕНА
    7.
    发明专利
    СПОСОБ СНИЖЕНИЯ ТЕМПЕРАТУРЫ ГОРЯЧЕЙ ТОЧКИ НЕПОДВИЖНОГО СЛОЯ КАТАЛИЗАТОРА В ПРОЦЕССЕ ПОЛУЧЕНИЯ АКРИЛОВОЙ КИСЛОТЫ ПУТЕМ ДВУХСТАДИЙНОГО СПОСОБА ГЕТЕРОГЕННО КАТАЛИЗИРУЕМОГО ЧАСТИЧНОГО ОКИСЛЕНИЯ В ГАЗОВОЙ ФАЗЕ ПРОПИЛЕНА 未知

    公开(公告)号：RU2415126C2

    公开(公告)日：2011-03-27

    申请号：RU2007103614

    申请日：2005-04-21

    Applicant: BASF AG

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

    IPC: C07C45/53 ,  C07C47/22 ,  C07C51/16 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055

    Abstract: Настоящееизобретениеотноситсяк способуснижениятемпературыгорячейточкинеподвижногослоякатализаторав процессеполученияакриловойкислотыпутемгетерогеннокатализируемогочастичногоокисленияв газовойфазепропилена, прикоторома. напервойреакционнойстадиипропанподвергаютгетерогеннокатализируемомудегидрированию, причемполучаютпродуктовуюгазовуюсмесь 1, b. изобразованнойпродуктовойгазовойсмеси 1, принеобходимости, превращаютчастичноеколичествосодержащихсяв нейотличныхотпропанаи пропиленакомпонентовв другиесоединенияи отобразованнойнапервойреакционнойстадиипродуктовойгазовойсмеси 1, принеобходимости, отделяютчастичноеколичествосодержащихсяв нейотличныхотпропанаи пропиленакомпонентов, причемизпродуктовойгазовойсмеси 1 получаютпродуктовуюгазовуюсмесь 1', содержащуюпропани пропилен, атакжеотличныеоткислорода, пропанаи пропиленасоединения, с. продуктовуюгазовуюсмесь 1 или 1' вкачествекомпонентаисходнойреакционнойгазовойсмеси 2, навторойреакционнойстадииподвергаютгетерогеннокатализируемомучастичномуокислениюв газовойфазесодержащегосяв продуктовойгазовойсмеси 1 или 1' пропиленав акролеин, причемполучаютпродуктовуюгазовуюсмесь 2, d. температурупокидающейвторуюреакционнуюстадиюпродуктовойгазовойсмеси 2, вслучаенеобходимости, снижаютпрямыми/иликосвеннымохлаждениеми кэтойсмеси 2, вслучаенеобходимости, добавляютмолекулярныйкислороди/илиинертныйгаз, е. послеэтогов качествеисходнойреакционнойгазовойсмеси 3, натретьейреакционнойстадии, подвергаютгетерогеннокатализируемомучастичномуок

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