公开(公告)号：DE50301823D1

公开(公告)日：2006-01-05

申请号：DE50301823

申请日：2003-07-22

Applicant: BASF AG

Inventor： WEIGUNY JENS ,  RUPPEL WILHELM ,  DUDA MARK

IPC: C07B61/00 ,  C07D307/60

Abstract: A process for the production of maleic acid anhydride by heterogeneous catalytic gas phase oxidation of hydrocarbons having at least four carbon atoms with oxygen-containing gas in the presence of a volatile phosphorus compound at a vanadium, phosphorus and oxygen-containing catalyst in a tubular reactor unit having at least one reaction zone cooled by a heat exchange medium at 350-500 degreesC. A process for the production of maleic acid anhydride by heterogeneous catalytic gas phase oxidation of hydrocarbons having at least four carbon atoms with oxygen-containing gas in the presence of a volatile phosphorus compound at a vanadium, phosphorus and oxygen-containing catalyst in a tubular reactor unit having at least one reaction zone cooled by a heat exchange medium at 350-500 degreesC. With respect to the addition of reactants to the first reaction zone, the addition temperature and/or addition amount of the heat exchange medium are such that the average temperature of the heat exchange medium in the first reaction zone (TSB(1. zone)) is described by formula (1) and (2). TSB(1.zone) at most TD(1.zone)-TSafety(1.zone) (1) TSB,Amax(1.zone)-TA(1.zone) at most TSB(1.zone) at most TSB,Amax(1.zone)+TB(1.zone) (2) TD(1.zone) = through temperature in the first reaction zone corresponding to the average temperature of the heat exchange medium at which a 1 degreesC increase in the average temperature of the heat exchange medium results in a 5 degreesC increase of the hot spot temperature of the first reaction zone THS(1.zone); TSB(1.zone) = average temperature of the heat exchange medium; TSafety(1.zone) = safety temperature of the first reaction zone and is 1 degreesC; TSB,Amax(1.zone) = average temperature of the heat exchange medium in the first reaction zone in the region TSB(1.zone) of no greater than T (1.zone) corresponding to the maximum yield of maleic acid anhydride; T (1.zone) = 20 degreesC; T (1.zone) = 10 degreesC

公开(公告)号：DE10361824A1

公开(公告)日：2005-07-28

申请号：DE10361824

申请日：2003-12-30

Applicant: BASF AG

Inventor： JOHANN THORSTEN ,  SCHINDLER GOETZ-PETER ,  BRODHAGEN ANDREAS ,  CRONE SVEN ,  BENFER REGINA ,  HILL THOMAS ,  DUDA MARK

IPC: C07C5/333 ,  C07C5/48 ,  C07C11/167 ,  C07C7/10 ,  C07C5/05 ,  C07C11/08 ,  C07C11/16

Abstract: The disclosure relates to a process for preparing butadiene. The process involves nonoxidatively catalytically dehydrogenating butane to obtain a product gas stream containing butane, 1-butene, 2-butene, butadiene, hydrogen and secondary constituents. The 1-butene and 2-butene of the product gas stream is then oxidatively dehydrogenated to give a second gas stream containing butane,2-butene, butadiene, hydrogen, steam and secondary constituents. Next, the butane,2-butene and butadiene are separated from the second gas stream and the butane and 2-butene are then separated from the butadiene product. The butane and 2-butene are then recycled into the nonoxidative catalytic dehydrogenating zone.

公开(公告)号：AT291017T

公开(公告)日：2005-04-15

申请号：AT02754895

申请日：2002-07-17

Applicant: BASF AG

Inventor： HIBST HARTMUT ,  NOE RALF ,  EXNER KAI MICHAEL ,  DUDA MARK

IPC: C07B61/00 ,  C07D307/60

Abstract: A process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of an n-butene-containing hydrocarbon stream by means of oxygen-containing gases in a shell-and-tube reactor having two successive reaction zones, where the first, feed-side reaction zone contains at least one catalyst which is suitable for the oxydehydrogenation of n-butenes to 1,3-butadiene and the second, product-side reaction zone contains at least one catalyst which is suitable for the oxidation of 1,3-butadiene to maleic anhydride, is carried out using a shell-and-tube reactor which has at least one heat transfer medium circuit in the region of the first, feed-side reaction zone and at least one further heat transfer medium circuit in the region of the second, product-side reaction zone.

公开(公告)号：DE10334582A1

公开(公告)日：2005-02-24

申请号：DE10334582

申请日：2003-07-28

Applicant: BASF AG

Inventor： DUDA MARK ,  MACHHAMMER OTTO ,  WECK ALEXANDER

IPC: C07C51/215 ,  C07D307/60

Abstract: Maleic anhydride production by gas-phase oxidation of n-butane with oxygen-containing gases on a heterogeneous vanadium-, phosphorus- and oxygen-containing (VPO) catalyst at 350-500[deg]C with recycling of unconverted n-butane is such that (a) the stream entering the reactor has n-butane and O 2 concentrations of 0.5-1.5 and 5-21 volume % respectively; (b) pressure at the inlet is 0.4-2 MPa abs.; and (c) 40-100% of the n-butane is converted. Maleic anhydride (MA) production by gas- phase oxidation of n-butane with oxygen-containing gases on a heterogeneous vanadium-, phosphorus- and oxygen-containing (VPO) catalyst at 350-500[deg]C with MA separation by forming a gas stream containing unconverted n-butane and water and recycling part of the n-butane to the reactor unit is such that (a) the stream entering the reactor has n-butane and oxygen concentrations of 0.5-1.5 and 5-21 volume % respectively; (b) the pressure at the inlet is 0.4-2 MPa abs.; and (c) 40-100% of the n-butane is converted.

公开(公告)号：DE10211447A1

公开(公告)日：2003-10-02

申请号：DE10211447

申请日：2002-03-15

Applicant: BASF AG

Inventor： WEIGUNY JENS ,  STORCK SEBASTIAN ,  DUDA MARK ,  DOBNER CORNELIA

IPC: B01J27/198 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  C07C51/215 ,  C07D307/60

公开(公告)号：DE10211446A1

公开(公告)日：2003-10-02

申请号：DE10211446

申请日：2002-03-15

Applicant: BASF AG

Inventor： WEIGUNY JENS ,  STORCK SEBASTIAN ,  DUDA MARK ,  FELDER RAIMUND ,  DOBNER CORNELIA

IPC: C07D307/60 ,  B01J27/198 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/08 ,  B01J37/14 ,  B01J37/18 ,  C07C51/215 ,  C07C51/25

Abstract: Disclosed is a method for producing a catalyst containing vanadium, phosphorus, and oxygen, which is used for oxidizing the gas phase of a hydrocarbon having at least four carbon atoms to maleic anhydride. According to the inventive method, a corresponding catalyst precursor which contains vanadium, phosphorus, and oxygen and is provided with particles having an average diameter of at least 2 mm is converted into a catalytically active form by means of calcination, and a flow of the catalyst precursor is transported on a conveyor belt across at least one calcination area over a distance 1 n at an essentially steady speed in order to be calcinated. The variation over time of the gas temperature in relation to the set point value amounts to n /2 of the calcination area, while the local difference in the gas temperature between any positions in the area of the flow of the catalyst precursor, which is located within the second half 1 n /2 of the calcination area, amounts to

公开(公告)号：AU2003212334A1

公开(公告)日：2003-09-29

申请号：AU2003212334

申请日：2003-03-12

Applicant: BASF AG

Inventor： WEIGUNY JENS ,  STORCK SEBASTIAN ,  DUDA MARK ,  DOBNER CORNELIA

IPC: B01J27/198 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  C07C51/215 ,  C07C57/145