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    Redn. of explosion risk in acrolein and acrylic acid prodn. from propane
    27.
    发明专利
    Redn. of explosion risk in acrolein and acrylic acid prodn. from propane 未知

    公开(公告)号：DE19508558A1

    公开(公告)日：1996-09-12

    申请号：DE19508558

    申请日：1995-03-10

    Applicant: BASF AG

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

    IPC: C07C45/33 ,  C07C45/35 ,  C07C51/25 ,  C07C57/05 ,  C07C47/22

    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.

    28.
    发明专利
    未知

    公开(公告)号：NO172477C

    公开(公告)日：1993-07-28

    申请号：NO893322

    申请日：1989-08-18

    Applicant: BASF AG

    Inventor： GERHARDT WOLFGANG ,  HEFNER WERNER

    IPC: B01D53/14 ,  B01D53/52 ,  B01D53/40 ,  B01D53/62 ,  B01D53/77 ,  C10K1/14

    Abstract: The present invention relates to a process for removing CO2 and possibly H2S from a gas containing CO2 and possibly H2S by means of an absorption fluid, wherein the gas containing CO2 and possibly H2S is treated in an absorption zone with the absorption fluid, the treated gas is extracted from the absorption zone, the absorption fluid laden with CO2 and possibly H2S is then regenerated by expanding the absorption fluid laden with CO2 and possibly H2S in one or more expansion stages and extracting an expansion gas at the top of the first expansion stage or, in the case of more than one expansion stages, at the top of at least one of the first to penultimate expansion stages and feeding, if desired, the partially regenerated absorption fluid obtained from the last expansion stage to a stripping zone for further regeneration, at least one acid gas stream containing the CO2 and possibly H2S being extracted from the regeneration and the regenerated absorption fluid being recycled into the absorption zone, wherein a part stream of fully or partially regenerated absorption fluid is fed to at least one of the expansion stages, from which the expansion gas is extracted, at a point above the feed of the absorption fluid which is to be expanded.

    29.
    发明专利
    未知

    公开(公告)号：NO893322L

    公开(公告)日：1990-02-20

    申请号：NO893322

    申请日：1989-08-18

    Applicant: BASF AG

    Inventor： GERHARDT WOLFGANG ,  HEFNER WERNER

    IPC: B01D53/14 ,  B01D53/40 ,  B01D53/52 ,  B01D53/62 ,  B01D53/77 ,  C10K1/14

    Abstract: The present invention relates to a process for removing CO2 and possibly H2S from a gas containing CO2 and possibly H2S by means of an absorption fluid, wherein the gas containing CO2 and possibly H2S is treated in an absorption zone with the absorption fluid, the treated gas is extracted from the absorption zone, the absorption fluid laden with CO2 and possibly H2S is then regenerated by expanding the absorption fluid laden with CO2 and possibly H2S in one or more expansion stages and extracting an expansion gas at the top of the first expansion stage or, in the case of more than one expansion stages, at the top of at least one of the first to penultimate expansion stages and feeding, if desired, the partially regenerated absorption fluid obtained from the last expansion stage to a stripping zone for further regeneration, at least one acid gas stream containing the CO2 and possibly H2S being extracted from the regeneration and the regenerated absorption fluid being recycled into the absorption zone, wherein a part stream of fully or partially regenerated absorption fluid is fed to at least one of the expansion stages, from which the expansion gas is extracted, at a point above the feed of the absorption fluid which is to be expanded.

    30.
    发明专利
    未知

    公开(公告)号：NO893322D0

    公开(公告)日：1989-08-18

    申请号：NO893322

    申请日：1989-08-18

    Applicant: BASF AG

    Inventor： GERHARDT WOLFGANG ,  HEFNER WERNER

    IPC: B01D53/14 ,  B01D53/52 ,  B01D53/40 ,  B01D53/62 ,  B01D53/77 ,  C10K1/14 ,  B01D53/00

    Abstract: The present invention relates to a process for removing CO2 and possibly H2S from a gas containing CO2 and possibly H2S by means of an absorption fluid, wherein the gas containing CO2 and possibly H2S is treated in an absorption zone with the absorption fluid, the treated gas is extracted from the absorption zone, the absorption fluid laden with CO2 and possibly H2S is then regenerated by expanding the absorption fluid laden with CO2 and possibly H2S in one or more expansion stages and extracting an expansion gas at the top of the first expansion stage or, in the case of more than one expansion stages, at the top of at least one of the first to penultimate expansion stages and feeding, if desired, the partially regenerated absorption fluid obtained from the last expansion stage to a stripping zone for further regeneration, at least one acid gas stream containing the CO2 and possibly H2S being extracted from the regeneration and the regenerated absorption fluid being recycled into the absorption zone, wherein a part stream of fully or partially regenerated absorption fluid is fed to at least one of the expansion stages, from which the expansion gas is extracted, at a point above the feed of the absorption fluid which is to be expanded.

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