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    METHOD FOR PRODUCING POLYETHER POLYOLS IN THE PRESENCE OF A MULTI-METAL CYANIDE COMPLEX CATALYST
    133.
    发明专利
    METHOD FOR PRODUCING POLYETHER POLYOLS IN THE PRESENCE OF A MULTI-METAL CYANIDE COMPLEX CATALYST 未知

    公开(公告)号：CA2399507A1

    公开(公告)日：2001-08-30

    申请号：CA2399507

    申请日：2001-02-22

    Applicant: BASF AG

    Inventor： BAUER STEPHAN ,  OSTROWSKI THOMAS ,  HARRE KATHRIN ,  WINKLER JURGEN ,  STUTZER DIETER ,  GROSCH GEORG HEINRICH ,  ZEHNER PETER ,  MULLER JORN

    IPC: B01J27/26 ,  C08G65/26 ,  C08G65/28

    Abstract: The invention relates to a method for producing polyether polyols by reactin g diols or polyols with ethylene oxide, propylene oxide, butylene oxide or mixtures thereof in the presence of a multimetal cyanide complex catalyst. T he reaction is carried out in a vertical, high cylindrical reactor comprising a discharge nozzle which is situated in the upper reactor area and directed downwards, and by which means the educts and the reaction mixture are supplied; and an outlet which is preferably situated in the lower reactor ar ea and through which the reaction mixture is guided back to the discharge nozzl e by means of a pump and via an equalising reservoir, in an outer circuit. The reactor also comprises a concentric guiding pipe which extends over the enti re length of the reactor with the exception of the reactor ends, and a heat exchanger which is integrated into the annulus.

    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
    134.
    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.

    135.
    发明专利
    未知

    公开(公告)号：DE19854637A1

    公开(公告)日：2000-05-31

    申请号：DE19854637

    申请日：1998-11-26

    Applicant: BASF AG

    Inventor： BERG STEFAN ,  ZEHNER PETER ,  BENFER REGINA ,  MUELLER JOERN ,  NILLES MICHAEL ,  SCHULZ RALF ,  STUETZER DIETER

    IPC: B01J8/22 ,  B01J10/00 ,  B01J19/00 ,  B01J19/24 ,  B01J19/26 ,  C07B61/00 ,  C07C45/72 ,  C07C51/235 ,  C07C53/122 ,  B01J14/00 ,  B01J8/00

    Abstract: The invention relates to a vertical cylinder reactor (1) for carrying out gas-liquid, liquid-liquid or gas-liquid-solid chemical reactions. Said reactor comprises a nozzle (2) which is arranged in the upper portion of the reactor and which is directed downwards and by way of which the educts and the reaction mixture are supplied. The reactor further comprises a discharge (3), preferably in the lower portion of the reactor, through which the reaction mixture can be re-fed to the nozzle (2) via an exterior circuit by way of a pump (P). A concentric guide tube is arranged in the reactor which substantially extends across the entire length of the reactor (1) except the reactor ends. Said guide tube has a cross-sectional area in the range of a tenth to half of the cross-sectional area of the reactor (1). The nozzle is arranged above the upper end of the guide tube (4), preferably in a distance of an eighth to a full cross-sectional area of the guide tube or it dips into the guide tube (4) in a depth of up to several cross-sectional areas of the guide tube. A heat exchanger is integrated into the annulus, especially a heat exchanger with heat exchanger tubes (6) welded between bottoms (6). Said tubes are preferably arranged parallel to the guide tube.

    PREPARATION OF HOMOPOLYMERS OR COPOLYMERS OF PROPYLENE
    138.
    发明专利
    PREPARATION OF HOMOPOLYMERS OR COPOLYMERS OF PROPYLENE 未知

    公开(公告)号：AU4134889A

    公开(公告)日：1990-03-22

    申请号：AU4134889

    申请日：1989-09-15

    Applicant: BASF AG

    Inventor： RAU WOLFGANG ,  ZAPF WALTER ,  ZEHNER PETER

    IPC: C08F2/34 ,  C08F4/642 ,  C08F4/651 ,  C08F10/00 ,  C08F10/06

    Abstract: The invention relates to a process for preparing propylene homo- or copolymers by polymerising the parent monomer by means of a Ziegler- Natta catalyst system comprising (1) a finely divided titanium(III) component based on a cocrystallisate of the formula TiCl3.1/3AlCl3 and obtained by grinding, (2) an alkylaluminium component, and (3), if desired, a further cocatalyst component, in the gas phase in a stirred bed with dissipation of the heat of polymerisation by evaporative cooling, the monomer being introduced into a polymerisation reactor (P) and the polymer being discharged from (P), with the proviso that (a) the pressure and temperature in (P) are kept in a range which corresponds to the gaseous state of the monomer, (b) gaseous monomer not consumed by the polymerisation is discharged from (P), and the monomer is liquefied and stored in a condenser/cooler storage system and reintroduced into (P), (c) the temperature in the stirred bed is regulated by adjusting the amount introduced per time unit of liquid monomer evaporating in (P), and (d) the consumed monomer is replaced by fresh monomer, characterised in that the titanium(III) component (1) of the catalyst system is employed in the form of a relatively low-concentration suspension of the titanium(III) component in a liquid alkane, with the proviso that this suspension has been obtained by first vigorously stirring a very highly concentrated suspension of the titanium(III) component in the alkane for a certain period and is then diluted to the lower concentration using further alkane.

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