公开(公告)号：DE50004079D1

公开(公告)日：2003-11-20

申请号：DE50004079

申请日：2000-03-15

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  CORR FRANZ ,  REUTER PETER ,  WAMBACH LUDWIG ,  HAMMON ULRICH

IPC: B01J8/06 ,  B01J19/00 ,  B01J19/24 ,  C07C45/35 ,  C07C45/38 ,  H01Q21/08

Abstract: A multitube fixed bed reactor and the use of such a reactor for carrying out catalytic gas-phase reactions, in particular for carrying out exothermic and endothermic catalytic gas-phase reactions such as the preparation of phthalic anhydride (PA), acrylic acid, methacrylic acid (MAA), acrolein, maleic anhydride (MA), glyoxal, phosgene, hydrocyanic acid or vinyl formamide (VFA). In a relatively large multitube reactor in which a large amount of heat of reaction is generated owing to the numerous catalyst tubes ( 17 ) and has to be removed, it is proposed that the ratio of tube spacing t to external tube diameter d a be made dependent on the reactor diameter or on the external tube bundle diameter d RBa . At an external diameter of the catalyst tube bundle ( 18 ) of more than 4 meters, a ratio of tube spacing d to external tube diameter d a of at least 1.3 is preferred.

公开(公告)号：DE50004070D1

公开(公告)日：2003-11-20

申请号：DE50004070

申请日：2000-02-28

Applicant: BASF AG

Inventor： UNVERRICHT SIGNE ,  ARNOLD HEIKO ,  TENTEN ANDREAS ,  HAMMON ULRICH ,  NEUMANN HANS-PETER ,  HARTH KLAUS

IPC: B01J23/88 ,  B01J23/00 ,  B01J23/31 ,  B01J23/887 ,  B01J35/00 ,  C07B61/00 ,  C07C27/14 ,  C07C45/35 ,  C07C47/22 ,  C07C51/215 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05

Abstract: A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with an increased propene loading, in a first reaction stage, over a first fixed-bed catalyst and then the acrolein-containing product gas mixture of the first reaction stage is oxidized, in a second reaction stage, with an increased acrolein loading, over a second fixed-bed catalyst, the catalyst moldings in both reaction stages having an annular geometry.

公开(公告)号：DE10217325A1

公开(公告)日：2003-07-17

申请号：DE10217325

申请日：2002-04-18

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  SCHROEDER JUERGEN

IPC: C07C45/35 ,  C07C51/25 ,  C07C57/05 ,  C07C45/27 ,  C07C47/22

Abstract: A method for the renewed pre-heating and/or post-cooling of a reaction zone which has been used in a process for catalytic gas phase oxidation to (meth)acrolein and/or (meth)acrylic acid, involves using an oxygen-containing gas stream with an oxygen content of not more than 9 wt.%.

公开(公告)号：DE10218616A1

公开(公告)日：2003-06-18

申请号：DE10218616

申请日：2002-04-25

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  THIEL JOACHIM ,  SCHLIEPHAKE VOLKER

IPC: B01D3/00 ,  B01D3/20 ,  B01D53/14 ,  B01D53/18 ,  C07C51/44 ,  B01D3/14 ,  B01D11/04

Abstract: Insert has an operating opening. Independent claims are also included for a process for separating a mixture in a separating column; and a process for cooling a gas in a condenser.

公开(公告)号：DE10211273A1

公开(公告)日：2003-03-06

申请号：DE10211273

申请日：2002-03-13

Applicant: BASF AG

Inventor： SCHROEDER JUERGEN ,  MUELLER-ENGEL KLAUS JOACHIM ,  SCHLIEPHAKE VOLKER ,  HAMMON ULRICH ,  DIEHL VOLKER ,  JAEGER ULRICH

IPC: B08B9/08 ,  C07C51/44 ,  C07C57/07 ,  C07C67/54 ,  C07C69/54 ,  B08B3/08 ,  B08B3/10 ,  B08B5/00

Abstract: Method for cleaning a plate-type column that has been used to rectify (meth)acrylic acid and/or (meth)acrylate esters by passing a basic liquid downwards through the column comprises passing a gas upwards through the column so that the mean pressure drop is at least 0.5 mbar per plate.

公开(公告)号：DE59805129D1

公开(公告)日：2002-09-12

申请号：DE59805129

申请日：1998-10-21

Applicant: BASF AG

Inventor： HERBST HOLGER ,  NESTLER GERHARD ,  HAMMON ULRICH

IPC: C07C51/25 ,  C07C51/44 ,  C07C51/48 ,  C07C51/50 ,  C07C57/04 ,  C07C57/055 ,  C07C57/07 ,  C07C57/075

公开(公告)号：CZ20013233A3

公开(公告)日：2002-03-13

申请号：CZ20013233

申请日：2000-02-28

Applicant: BASF AG

Inventor： UNVERRICHT SIGNE ,  ARNOLD HEIKO ,  TENTEN ANDREAS ,  HAMMON ULRICH ,  NEUMANN HANS-PETER ,  HARTH KLAUS

IPC: B01J23/88 ,  B01J23/00 ,  B01J23/31 ,  B01J23/887 ,  B01J35/00 ,  C07B61/00 ,  C07C27/14 ,  C07C45/35 ,  C07C47/22 ,  C07C51/215 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05

Abstract: A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with an increased propene loading, in a first reaction stage, over a first fixed-bed catalyst and then the acrolein-containing product gas mixture of the first reaction stage is oxidized, in a second reaction stage, with an increased acrolein loading, over a second fixed-bed catalyst, the catalyst moldings in both reaction stages having an annular geometry.

公开(公告)号：BR0008880A

公开(公告)日：2002-01-22

申请号：BR0008880

申请日：2000-02-28

Applicant: BASF AG

Inventor： ARNOLD HEIKO ,  UNVERRICHT SIGNE ,  HAMMON ULRICH ,  NEUMANN HANS-PETER ,  HARTH KLAUS ,  TENTEN ANDREAS

IPC: B01J23/88 ,  B01J8/02 ,  B01J8/04 ,  B01J8/06 ,  B01J23/00 ,  B01J23/31 ,  B01J23/887 ,  B01J35/00 ,  C07B61/00 ,  C07C27/14 ,  C07C45/35 ,  C07C47/22 ,  C07C51/21 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07C57/055

Abstract: In a process for the catalytic gas-phase oxidation of propene to acrolein, the reaction gas starting mixture is passed with a propene loading of >=160 l(S.T.P.)/l.h over a fixed-bed catalyst which is housed in two spatially successive reaction zones A,B, the reaction zone B being kept at a higher temperature than the reaction zone A.

公开(公告)号：AU6757201A

公开(公告)日：2002-01-08

申请号：AU6757201

申请日：2001-06-27

Applicant: BASF AG

Inventor： KROKOSZINSKI ROLAND ,  HAMMON ULRICH ,  TODD KEVIN

IPC: C07C27/14 ,  C07B61/00 ,  C07C45/33 ,  C07C45/35 ,  C07C45/50 ,  C07C47/02 ,  C07C47/22 ,  C07C51/215 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055

Abstract: A process for preparing hydroformylation products of propylene and for preparing acrylic acid and/or acrolein comprises a) feeding a propylene-containing feed in which from 2 to 40% by weight of propane is present and also carbon monoxide and hydrogen into a reaction zone and reacting this mixture in the presence of a hydroformylation catalyst to form hydroformylation products of propane, b) separating a stream consisting essentially of unreacted propylene and propane from the output from the reaction zone, and c) subjecting the stream consisting essentially of propylene and propane to a catalytic gas-phase oxidation in the presence of molecular oxygen to form acrylic acid and/or acrolein.

公开(公告)号：MXPA01009012A

公开(公告)日：2002-01-01

申请号：MXPA01009012

申请日：2001-09-06

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  CORR FRANZ ,  REUTER PETER ,  WAMBACH LUDWIG ,  HAMMON ULRICH

IPC: B01J8/06 ,  B01J19/00 ,  B01J19/24 ,  C07C45/35 ,  C07C45/38 ,  H01Q21/08

Abstract: A multitube fixed bed reactor and the use of such a reactor for carrying out catalytic gas-phase reactions, in particular for carrying out exothermic and endothermic catalytic gas-phase reactions such as the preparation of phthalic anhydride (PA), acrylic acid, methacrylic acid (MAA), acrolein, maleic anhydride (MA), glyoxal, phosgene, hydrocyanic acid or vinyl formamide (VFA). In a relatively large multitube reactor in which a large amount of heat of reaction is generated owing to the numerous catalyst tubes ( 17 ) and has to be removed, it is proposed that the ratio of tube spacing t to external tube diameter d a be made dependent on the reactor diameter or on the external tube bundle diameter d RBa . At an external diameter of the catalyst tube bundle ( 18 ) of more than 4 meters, a ratio of tube spacing d to external tube diameter d a of at least 1.3 is preferred.