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    PREPARATION OF PHTHALIC ANHYDRIDE
    3.
    发明专利
    PREPARATION OF PHTHALIC ANHYDRIDE 未知

    公开(公告)号：MY137916A

    公开(公告)日：2009-03-31

    申请号：MYPI20041556

    申请日：2004-04-28

    Applicant: BASF AG

    Inventor： NETO SAMUEL DR ,  XDCHLKE J XDCRGEN Z DR ,  STORCK SEBASTIAN DR ,  ROSOWSKI FRANK DR

    IPC: C07C51/265 ,  C07C51/31 ,  C07D307/89

    Abstract: THE INVENTION RELATES TO A PROCESS FOR PREPARING PHTHALIC ANHYDRIDE, IN WHICH THE CATALYTIC GAS-PHASE OXIDATION OF O-XYLENE AND/OR NAPHTHALENE IS CARRIED OUT OVER AT LEAST THREE ZONES OF CATALYSTS OF INCREASING ACTIVITY, WITH ONLY THE LAST ZONE OF THE CATALYST SYSTEM CONTAINING PHOSPHORUS AND THE LAST ZONE ALSO COMPRISING AT LEAST 10% BY WEIGHT OF VANADIUM (CALCULATED AS V₂ O5) BASED ON THE ACTIVE COMPOSITION OF THE CATALYST AND HAVING A RATIO OF VANADIUM (CALCULATED AS V₂O5) TO PHOSPHORUS OF GREATER THAN 35.

    APPARATUS FOR MIXING, DRYING AND COATING PULVERULENT, GRANULAR OR SHAPED LOOSE MATERIAL IN A FLUIDIZED BED AND METHOD OF PRODUCING SUPPORTED CATALYSTS USING SUCH AN APPARATUS
    4.
    发明专利
    APPARATUS FOR MIXING, DRYING AND COATING PULVERULENT, GRANULAR OR SHAPED LOOSE MATERIAL IN A FLUIDIZED BED AND METHOD OF PRODUCING SUPPORTED CATALYSTS USING SUCH AN APPARATUS 未知

    公开(公告)号：MY136246A

    公开(公告)日：2008-08-29

    申请号：MYPI20043894

    申请日：2004-09-23

    Applicant: BASF AG

    Inventor： NETO SAMUEL DR ,  RUMMEL WOLFGANG ,  STORCK SEBASTIAN DR ,  ZUEHLKE JUERGEN DR ,  ROSOWSKI FRANK DR

    IPC: B01J2/16 ,  B01J8/18 ,  B01J23/00 ,  B01J23/22 ,  B01J27/199 ,  B01J35/02 ,  B01J37/02 ,  F26B3/08 ,  F26B3/092

    Abstract: THE INVENTION RELATES TO AN APPARATUS FOR MIXING, DRYING AND COATING PULVERULENT, GRANULAR OR SHAPED LOOSE MATERIAL IN A FLUIDIZED BED, IN PARTICULAR FOR USE IN A PROCESS FOR PRODUCING SUPPORTED CATALYSTS FOR GAS-PHASE OXIDATIONS, WHICH COMPRISES A CONTAINER (10) FOR ACCOMMODATING THE LOOSE MATERIAL, WITH A BOWL-LIKE DEPRESSION (17) BEING PROVIDED IN A LOWER REGION (13) OF THE CONTAINER (10), A CENTRAL TUBE (27) FOR INTRODUCING A GAS, WITH THE CENTRAL TUBE ENTERING THE CONTAINER IN AN UPPER REGION (12) OF THE CONTAINER (10), EXTENDING ESSENTIALLY AXIALLY DOWNWARD IN THE CONTAINER (10) AND OPENING INTO THE DEPRESSION (17), AN ESSENTIALLY ANNULAR DEFLECTION SHIELD (29) WHICH IS FIXED TO THE CENTRAL TUBE (27) IN THE UPPER REGION (12) OF THE CONTAINER (10), A GUIDE RING (31) WHICH IS LOCATED IN THE LOWER REGION (13) OF THE CONTAINER (10) AND SURROUNDS THE CENTRAL TUBE (27) ESSENTIALLY CONCENTRICALLY AT A DISTANCE (L) FOR PART OF ITS LENGTH SO THAT A FIRST OPENING (34) IS FORMED BETWEEN THE WALL OF THE CONTAINER (10) AT THE UPPER EDGE (22) OF THE DEPRESSION AND THE LOWER END (33) OF THE GUIDE RING (31) AND A SECOND OPENING (36) IS FORMED BETWEEN THE DEFLECTION SHIELD (29) AND THE UPPER EDGE (35) OF THE GUIDE RING (31),AND MEANS,FOR EXAMPLE VALVES (21),FOR INTRODUCING A FLUID INTO THE CONTAINER (10). IN THE APPARATUS OF THE PRESENT INVENTION, THE OUTER WALL OF THE CENTRAL TUBE (27) IS AT LEAST PARTLY PROVIDED WITH AN ADHESION-REDUCING COATING (38). IN A PREFERRED EMBODIMENT, THE DISTANCE (L) BETWEEN THE WALL OF THE CENTRAL TUBE (27) AND THE WALL OF THE GUIDE RING (27) IS GREATER THAN THE OPEN HEIGHT (H3) OF THE FIRST OPENING (34). THE INVENTION ALSO PROVIDES A PROCESS FOR PRODUCING SUPPORTED CATALYSTS USING SUCH AN APPARATUS.FIG.1

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