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    82.
    发明专利
    未知

    公开(公告)号：ES2139266T3

    公开(公告)日：2000-02-01

    申请号：ES96103300

    申请日：1996-03-04

    Applicant: BASF AG

    Inventor： HEFNER WERNER ,  MACHHAMMER OTTO ,  NEUMANN HANS-PETER ,  TENTEN ANDREAS ,  RUPPEL WILHELM ,  VOGEL HERBERT

    IPC: C07C47/22 ,  C07B61/00 ,  C07C5/333 ,  C07C11/06 ,  C07C45/33 ,  C07C45/35 ,  C07C51/215 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07C57/055

    Abstract: Prodn. of acrolein (I) and/or acrylic acid (II) from C3H8 involves (A) gas phase partial dehydrogenation of C3H8 to C3H6, using heterogeneous catalyst; (B) using the prod. gas mixt. of C3H6 and unreacted C3H8 for charging an oxidn. reactor, in which C3H6 is converted to (I) and/or (II) by gas phase selective partial oxidn. with pure O2 using heterogeneous catalyst; and (C) separating the prod. from the prod. gas stream and recycling at least the unreacted C3H8 from stage (B) to stage (A). The novelty is that, before entering stage (B), constituents other than C3H8 and C3H6, at least H2 and steam, are removed from the prod. gas mixt. from stage (A). Pref. all constituents except C3H8 and C3H6 are removed after stage (A). Stage (B) is carried out in 2 consecutive reactors charged with multi-metal oxide catalysts, the first of Mo-Bi-Fe and the second of Mo-V. The prod. gas mixt. from the first oxidn. reactor is passed directly into the second; and the vol. ratio of organic cpd. for partial oxidn. (C3H6 or (II)) to O2 is 1:(1-3) in both reactors.

    83.
    发明专利
    未知

    公开(公告)号：DE59603806D1

    公开(公告)日：2000-01-05

    申请号：DE59603806

    申请日：1996-09-10

    Applicant: BASF AG

    Inventor： FETZER THOMAS ,  WAGNER ECKHART ,  ROETH EMIL ,  RUPPEL WILHELM ,  WISTUBA HERMANN ,  OTTO BERNHARD ,  SCHUMACHER VOLKER ,  BUERGER GERT

    IPC: B01D53/56 ,  B01D53/77 ,  B01D53/86 ,  C01B21/38 ,  C01B21/40

    Abstract: PCT No. PCT/EP96/03971 Sec. 371 Date Mar. 10, 1998 Sec. 102(e) Date Mar. 10, 1998 PCT Filed Sep. 10, 1996 PCT Pub. No. WO97/10042 PCT Pub. Date Mar. 20, 1997The invention relates to a process for removing nitrogen oxides from a gas stream containing same, which comprises passing the gas stream (A) through a stage for absorbing the nitrogen oxides other than N2O in an absorbent or reacting the nitrogen oxides other than N2O with an absorbent at a pressure of from 1,5 to 20 bar, and (B) through a stage for reducing the amount of N2O, preferably employing the pressure level of step A, and to apparatus therefor and the use thereof.

    METHOD FOR PRODUCING CARBONYL COMPOUNDS
    84.
    发明专利
    METHOD FOR PRODUCING CARBONYL COMPOUNDS 未知

    公开(公告)号：CA2274492A1

    公开(公告)日：1998-07-02

    申请号：CA2274492

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： RESCH PETER ,  RUPPEL WILHELM ,  WACHE HARRO ,  RUETTER HEINZ ,  MENIG HELMUTH ,  FETZER THOMAS ,  DEMUTH DIRK

    IPC: B01J23/72 ,  C07C45/38 ,  C07C45/39 ,  C07C47/127

    Abstract: The invention relates to a method for producing carbonyl compounds of formula (I), in which R1 is a hydrogen atom or an alkyl radical with between 1 and 3 C atoms; R2 is a hydrogen atom or a radical of formula (II) in which R3 is a hydrogen atom or, together with R4, an oxygen atom; R4 is the radical OR6 or, together with R3, an oxygen atom; R5 is a hydrogen atom, an alkyl radical with between 1 and 8 C atoms or a cyclohexyl or cyclopentyl radical; and R6 is an alkyl radical with between 1 and 4 C atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CHO or -CH2-CH2-O-CH2-CHO. According to said method, the carbonyl compounds are produced by gas-phase oxidation of methanol or alcohols of formula (III), in which R1 and R5 have the meaning assigned above and R7 is a hydrogen atom or an OR8 radical, and R8 is a hydrogen atom, an alkyl radical with between 1 and 4 C atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CH2-OH or -CH2-CH2-O-CH2-CH2-OH, with a gas containing oxygen, in the presence of catalysts containing copper and/or silver and a phosphorus compounds which is volatile under reaction conditions, in such a quantity that the quantity of phosphorus (calculated as P) in relation to the part by weight of alcohol used is up to 20 ppm. The method is characterized in that the quantity of phosphorus is added in the catalyst bed.

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