公开(公告)号：DE10118814A1

公开(公告)日：2002-10-24

申请号：DE10118814

申请日：2001-04-17

Applicant: BASF AG

Inventor： BORGMEIER FRIEDER ,  PETZOLDT JOCHEN ,  HIBST HARTMUT ,  TENTEN ANDREAS

IPC: C07C51/25 ,  B01J23/00 ,  B01J23/28 ,  B01J27/057 ,  B01J37/02 ,  C07B61/00 ,  C07C45/33 ,  C07C45/35 ,  C07C57/05

Abstract: Acrolein and acrylic acid are produced from propane and propene by absorption/desorption of propane and propene from a gas mixture followed by oxidation, in which no heterogeneously catalyzed dehydrogenation of propane occurs between the desorption and oxidation stages without addition of oxygen. Acrolein and acrylic acid are produced from propane and propene by: (a) separation of propane and propene from a gas mixture (A) by absorption in an absorption medium; (b) separation of propane and propene from the absorbent to give a mixture (B) containing propane and propene; and (c) using mixture (B) for oxidation to the required product(s). In this process, no catalytic dehydrogenation of propane without the addition of oxygen is carried out between stages (b) and (c).

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：DE10028582A1

公开(公告)日：2001-12-20

申请号：DE10028582

申请日：2000-06-14

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  SCHINDLER GOETZ-PETER ,  TENTEN ANDREAS ,  HARTH KLAUS ,  ZEHNER PETER ,  MUELLER-ENGEL KLAUS JOACHIM ,  ROSOWSKI FRANK ,  BORGMEIER FRIEDER

IPC: C07C27/14 ,  C07B61/00 ,  C07C5/333 ,  C07C11/06 ,  C07C45/33 ,  C07C45/35 ,  C07C47/22 ,  C07C51/215 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07C57/07 ,  C07C45/78

Abstract: Molecular nitrogen is used as a diluent gas in the partial oxidation stage of a 3-stage method for the production of acrolein and acrylic acid from propane by: (A) partial gas-phase dehydrogenation; (B) removal of hydrogen and partial gas-phase oxidation of propene; and (C) separation of product and recycling of unreacted propane to stage (A). Acrolein and acrylic acid are produced from propane by: (A) partial gas-phase dehydrogenation of propane in presence of a heterogeneous catalyst to form a mixture (A) containing molecular hydrogen, propene and unreacted propane; (B) removing at least some of the hydrogen from the components other than propane and propene to give a mixture (A'), feeding (A') into oxidation reactor(s) and subjecting the propylene to selective, gas-phase partial oxidation in presence of heterogeneous catalyst to give a gas mixture (B) containing acrolein and acrylic acid; and (C) separating the required product and recycling unreacted propane (at least) to stage (A). In this process, molecular nitrogen is used as diluent gas in the partial oxidation stage (B).

公开(公告)号：DE10011309A1

公开(公告)日：2001-09-13

申请号：DE10011309

申请日：2000-03-10

Applicant: BASF AG

Inventor： WEIGUNY JENS ,  STORCK SEBASTIAN ,  TENTEN ANDREAS ,  RUPPEL WILHELM

IPC: C07D307/60 ,  B01J27/28 ,  B01J38/04 ,  C07B61/00 ,  C07C51/215

Abstract: Production of maleic anhydride by gas-phase oxidation of C4+ hydrocarbons with oxygen in the presence of a volatile phosphorus compound and a heterogeneous vanadium/phosphorus/oxygen catalyst comprises performing the oxidation in a shell-and-tube reactor comprising at least two sequential cooled reaction zones, in which the first zone is at 350-450 deg C, the second and subsequent zones are at 350-480 and the temperature difference between the hottest and coolest zones is at least 2 deg C. An Independent claim is also included for apparatus for carrying out the process, comprising: a unit for the metered supply of hydrocarbon, oxygen-containing gas and optionally the phosphorus compound; a shell-and-tube reactor comprising at least two sequential cooled reaction zones with independent temperature control; and a unit for separating maleic anhydride and optionally oxygenated hydrocarbon by-products.

公开(公告)号：BR9914287A

公开(公告)日：2001-06-19

申请号：BR9914287

申请日：1999-08-10

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  TENTEN ANDREAS ,  JACHOW HARALD ,  HAUPT SUSANNE ,  ARNOLD HEIKO ,  UNVERRICHT SIGNE

IPC: C07C27/14 ,  C07C45/33 ,  C07C45/35 ,  C07C47/22 ,  C07C51/215 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07C57/055

Abstract: In a process for the preparation of acrolein and/or acrylic acid from propane, the propane is subjected, in a first reaction stage, to an oxydehydrogenation with molecular oxygen under homogeneous and/or heterogeneous catalysis to give propene and the product gas mixture formed in the first reaction stage is then used for the preparation of acrolein and/or acrylic acid by gas-phase catalytic propene oxidation.

公开(公告)号：DE19948241A1

公开(公告)日：2001-04-12

申请号：DE19948241

申请日：1999-10-07

Applicant: BASF AG

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

IPC: B01J23/887 ,  C07C45/35 ,  C07C51/25 ,  B01J23/28 ,  B01J23/30 ,  B01J23/31 ,  B01J23/888 ,  B01J27/057 ,  C07C47/22

Abstract: Gas phase oxidation of propylene into acrylic acid in which the mixture of reaction gas is oxidized on a first fixed-bed catalyst and the mixture of product gas which contain acrolein oxidized on a second fixed-bed catalyst. The catalyst shaped bodies comprise an annular geometry in both reaction steps. Gas-phase oxidation of propylene in a one-stage reaction to acrolein and/or acrylic acid or in a two-stage reaction to acrylic acid is such that (i) the initial charge in both cases is \- 160 Nl propylene/l catalyst hour; (ii) the charge to the 2nd stage (if used) includes \- 140 NL acrolein/l catalyst hour ; and (iii) the catalyst or catalysts is/are of ring form with an outer diameter 2-11 mm, length 2-11 mm and a wall-thickness 1-5 mm. The process comprises (A) feeding a mixture of propylene, molecular oxygen and an inert gas with molar ratio O2 : C3H6 \- 1 at high temperature over a solid bed catalyst with characteristics (i) and (iii) above and comprising a multi-metal oxide containing Mo and/or W together with Bi, Te, Sb, Sn and/or Cu such that the propylene conversion and the combined selectivity for acrolein and the acrylic acid by-product are both \- 90 mol.%; and optionally (B) cooling the acrolein-containing gas product and optionally adding molecular O2 and/or inert gas prior to passing it at high temperature and with molar ratio O2 : acrolein \- 0.5 over a Mo- and V-containing multi-metal oxide solid bed catalyst such that the acrolein conversion is \- 90 mol.% and the combined two-stage acrylic acid selectivity (based on propylene conversion) is \- 80 mol.%.

公开(公告)号：AU3425400A

公开(公告)日：2000-09-28

申请号：AU3425400

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：DE19910506A1

公开(公告)日：2000-09-14

申请号：DE19910506

申请日：1999-03-10

Applicant: BASF AG

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

IPC: B01J23/00 ,  B01J23/31 ,  B01J23/887 ,  B01J35/00 ,  C07C45/35 ,  C07C51/25 ,  C07C57/055 ,  C07C57/05

Abstract: Production of acrolein or acrylic acid by gas-phase oxidation of propene comprises passing a mixture of propene, oxygen and inert gas (including at least 20 vol.% nitrogen) through a first fixed bed of catalyst at a temperature (T1) of 300-330 deg C and then through a second fixed bed of catalyst at a temperature (T2) of 300-365 deg C, where T2 is at least 5 deg C above T1. The molar ratio of oxygen to propene is at least 1:1. The catalyst is a mixed metal oxide comprising (i) molybdenum and/or tungsten and (ii) bismuth, tellurium, antimony, tin and/or copper. The propene supply rate is at least 160 Nl per liter of catalyst per hour. The single-pass propene conversion is at least 90%, with at least 90% selectivity for acrolein plus acrylic acid. The propene conversion in the first bed is 40-80%.

公开(公告)号：BR9811310A

公开(公告)日：2000-08-29

申请号：BR9811310

申请日：1998-07-25

Applicant: BASF AG

Inventor： HIBST HARTMUT ,  UNVERRICHT SIGNE ,  TENTEN ANDREAS

IPC: C01G39/00 ,  B01J23/88 ,  B01J23/885 ,  B01J23/888 ,  B01J35/00 ,  C01G41/00 ,  C07B61/00 ,  C07C51/235 ,  C07C57/055 ,  B01J23/887 ,  C07C51/25

Abstract: The invention relates to a method for producing multi-metal oxide masses containing Mo, V, Cu and at least one of the elements W, Nb, Cr and Ce. In this method, a solid component with fine particles is formed and incorporated, at low temperature, in an aqueous solution of parent compounds of the residual multi-metal oxide constituents. The mixture is dried and then burnt.