公开(公告)号：DE10261484A1

公开(公告)日：2004-07-01

申请号：DE10261484

申请日：2002-12-23

Applicant: BASF AG

Inventor： SCHLITTER STEPHAN ,  HAUBNER MARTIN ,  ZEHNER PETER ,  HESSE MICHAEL ,  WECK ALEXANDER ,  PINKOS ROLF ,  GRASLER THOMAS

IPC: C08G65/26 ,  C08G65/02

Abstract: The present invention relates to a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymer, diester or monoester by polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer and of an acidic heterogeneous catalyst based on activated sheet silicates or mixed metal oxides in a fluidized bed.

公开(公告)号：DE10301703A1

公开(公告)日：2004-07-29

申请号：DE10301703

申请日：2003-01-17

Applicant: BASF AG

Inventor： KUHRS CHRISTIAN ,  DANZ ECKEHARD ,  STEINER WOLFGANG ,  RAHN RALF-THOMAS ,  GRASLER THOMAS ,  GEIER REINER ,  HARTH KLAUS ,  HOELZLE MARKUS

IPC: C07D251/60 ,  B01J21/04 ,  B01J21/12

Abstract: Production of melamine by urea decomposition using a solid catalyst takes place in a main reactor containing a catalyst of low Lewis acidity and a post-reactor containing a catalyst of the same or higher (especially higher) Lewis acidity.

公开(公告)号：DE102005008612A1

公开(公告)日：2006-08-24

申请号：DE102005008612

申请日：2005-02-23

Applicant: BASF AG

Inventor： SESING MARTIN ,  DIEFENBACHER ARMIN ,  VOS HARTWIG ,  SCHUBERT OLGA ,  SEIDEMANN LOTHAR ,  KARCHES MARTIN ,  GRASLER THOMAS ,  STROEFER ECKHARD

IPC: C01B7/04

Abstract: The stream containing hydrogen chloride (I) and the stream containing oxygen (II) are fed into an oxidation zone. The hydrogen chloride is oxidized to chlorine. A gas and a water-free gas streams are remained through the cooling and drying. The stream reversal contains chlorine-rich, chlorine, oxygen and carbon dioxide, and the liquefaction is carried out by compression and cooling (6). The gas and the water-free gas streams contain chlorine, water, oxygen, carbon dioxide and inert gases. The Gas/liquid stream is separated into a gas stream containing chlorine, oxygen, carbon dioxide and inert gases and into a fluid stream containing chlorine, oxygen and carbon dioxide. The gas stream is fed into a membrane separation unit (9) and separated into the stream reversal and chlorine-poor, chlorine, oxygen and carbon dioxide containing gas by membrane separation. The liquid stream is separated into a chlorine stream and a stream containing oxygen and carbon dioxide by distillation. The chlorine-poor and the gas stream are led into the oxidation zone, and the chlorine poor is removed.

公开(公告)号：DE10342566A1

公开(公告)日：2005-04-07

申请号：DE10342566

申请日：2003-09-15

Applicant: BASF AG

Inventor： MUELLER-EVERSBUSCH MAYKE ,  SCHOENFELDER HENDRIK ,  GEIER REINER ,  HOELZLE MARKUS ,  GRASLER THOMAS ,  KUHRS CHRISTIAN ,  RAHN RALF-THOMAS

IPC: B01J8/00 ,  B01J8/18 ,  C07D251/60

Abstract: Producing melamine by reacting urea at 350-450[deg]C and up to 20 bar in the presence of a catalyst in the form of a fluidized bed comprises using a fluidized bed reactor with a conical base (5). An independent claim is also included for a reactor for carrying out the above process, comprising a product gas outlet (20) in a top section (19) of the reactor and a fluidizing gas inlet (8) located beneath the contents of the reactor, where the reactor is conical.

公开(公告)号：DE102005040286A1

公开(公告)日：2007-03-01

申请号：DE102005040286

申请日：2005-08-25

Applicant: BASF AG

Inventor： SCHUBERT OLGA ,  SESING MARTIN ,  SEIDEMANN LOTHAR ,  KARCHES MARTIN ,  GRASLER THOMAS ,  SOHN MARTIN

IPC: B01J21/04 ,  B01J23/00

Abstract: An oxidation process employing a mechanically stable catalyst of an active metal or combination of active metals supported on aluminum oxide, which is predominantly alpha-aluminum oxide, is provided. The active metal or metals is optionally one or a mixture of ruthenium, copper, gold, an alkaline earth metal, an alkali metal, palladium, platinum, osmium, iridium, silver, and rhenium. The process is applicable to the oxidation of hydrogen chloride to chlorine in a Deacon process.

公开(公告)号：DE102004014677A1

公开(公告)日：2005-10-13

申请号：DE102004014677

申请日：2004-03-25

Applicant: BASF AG

Inventor： WALSDORFF CHRISTIAN ,  SEIDEMANN LOTHAR ,  SESING MARTIN ,  FIENE MARTIN ,  GRASLER THOMAS ,  METELKINA OLGA ,  STROEFER ECKHARD ,  SOHN MARTIN

IPC: B01J8/18 ,  B01J8/24 ,  C01B7/04 ,  B01J23/46

Abstract: The invention relates to a process for carrying out exothermic chemical equilibrium reactions in a fluidized-bed reactor, wherein there is a temperature distribution in the fluidized bed of the fluidized-bed reactor and the temperature difference between the lowest temperature and the highest temperature is at least 10 K. The invention further relates to a fluidized-bed reactor for carrying out chemical reactions in a fluidized bed ( 5 ), wherein at least one heat exchanger ( 12, 28 ) is located in the fluidized bed ( 5 ) to control the temperature distribution.

公开(公告)号：DE102004030163A1

公开(公告)日：2006-01-19

申请号：DE102004030163

申请日：2004-06-22

Applicant: BASF AG

Inventor： GRASLER THOMAS ,  GIHR HARTMUT ,  KARCHES MARTIN ,  PROEBSTLE HANS-ULRICH ,  ROSOWSKI FRANK ,  PETZOLDT JOCHEN ,  RAULS MATTHIAS ,  MAGIN ANDREA

IPC: B01D7/02 ,  C07D213/80 ,  C07D213/807

公开(公告)号：DE10337501A1

公开(公告)日：2005-04-14

申请号：DE10337501

申请日：2003-08-14

Applicant: BASF AG

Inventor： KUHRS CHRISTIAN ,  DANZ ECKEHARD ,  STEINER WOLFGANG ,  RAHN RALF-THOMAS ,  GRASLER THOMAS ,  GEIER REINER ,  HARTH KLAUS ,  HOELZLE MARKUS

IPC: C07D251/60

Abstract: Production of melamine by urea decomposition using a solid catalyst takes place in a main reactor containing a catalyst of low Lewis acidity and a post-reactor containing a catalyst of the same or higher (especially higher) Lewis acidity.