公开(公告)号：DE102004032129A1

公开(公告)日：2005-03-03

申请号：DE102004032129

申请日：2004-07-01

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  SCHINDLER GOETZ-PETER ,  ADAMI CHRISTOPH ,  HECHLER CLAUS ,  DIETERLE MARTIN

IPC: B01J8/04 ,  C07C45/33 ,  C07C51/215 ,  C07C47/22 ,  C07C27/14 ,  C07C57/05

Abstract: Production of acrolein/acrylic acid (IA/B) comprises dehydrogenation of gas feeds containing propane to gas containing propane and propylene, (partial) separation, gas phase partial oxidation with oxygen to gas containing (IA/B) and excess oxygen and separation, residual gas containing propane, oxygen and optionally propylene is (partly) recycled to first zone. Production of acrolein (IA) and/or acrylic acid (IB) from propane comprises: (1) passing not less than 2 feed gas streams containing propane, including not less than 1 containing fresh propane, into a first reaction zone A, where the propane is subjected to heterogeneously catalyzed dehydrogenation, giving a product gas mixture A containing propane and propylene; (2) passing this mixture (A) into a first separation zone A, in which other components are (partly) separated, leaving product gas mixture A' containing propane and propylene; (3) using A' in a second reaction B for charging oxidation reactor(s), in which propylene in A' is subjected to heterogeneously catalyzed gas phase partial oxidation with molecular oxygen to convert it to a product gas mixture B containing acrolein and/or acrylic acid as intended product and excess oxygen; and (4) separating product gas mixture B in a second separation zone B into the intended product containing product gas mixture B and a residual gas (V) containing unreacted propane, oxygen and optionally unreacted propylene which is (partly) recycled to reaction zone A as one feed stream. The novelty is that residual gas (V) is recycled to reaction zone A at a feed point where not less than 5 mole-% of propane in the other feed stream(s) has already been dehydrogenated.

公开(公告)号：AU2003277867A1

公开(公告)日：2004-04-23

申请号：AU2003277867

申请日：2003-09-18

Applicant: BASF AG

Inventor： SCHINDLER GOTZ-PETER ,  PETZOLDT JOCHEN ,  ADAMI CHRISTOPH ,  MACHHAMMER OTTO ,  MULLER-ENGEL KLAUS JOACHIM ,  MARTAN HANS ,  HECHLER CLAUS

IPC: B01J23/00 ,  B01J23/887 ,  C07C5/32 ,  C07C5/48 ,  C07C7/05 ,  C07C11/06 ,  C07C27/00 ,  C07C45/35 ,  C07C51/215 ,  C07C51/25 ,  C07C235/24 ,  C07C253/24 ,  C07C253/26 ,  C07C255/08 ,  C07D301/10

Abstract: In a process for preparing at least one partial oxidation and/or ammoxidation product of propylene, the propylene is obtained from crude propane by dehydrogenating and subjected in the presence of unconverted propane as a constituent of a gas mixture 2 which comprises a total C 4 -hydrocarbon content of

公开(公告)号：DE10245585A1

公开(公告)日：2004-04-08

申请号：DE10245585

申请日：2002-09-27

Applicant: BASF AG

Inventor： HECHLER CLAUS ,  SCHINDLER GOETZ-PETER ,  PETZOLDT JOCHEN ,  ADAMI CHRISTOPH ,  MACHHAMMER OTTO ,  MUELLER-ENGEL KLAUS JOACHIM ,  MARTAN HANS

IPC: C07C7/05 ,  C07C47/22 ,  C07C57/04 ,  C07C253/18 ,  C07C255/08 ,  C07D301/08 ,  C07D303/04

Abstract: Preparation of at least one partial oxidation and/or ammoxidation product of propylene involves subjecting crude propylene (prepared by dehydrogenation or oxydehydrogenation in the presence and/or absence of oxygen) in the presence of unconverted propane as a constituent of a gas mixture 2 which comprises a total 4C-hydrocarbon content of at most 3 vol.%, to a heterogeneously catalyzed gas phase partial oxidation and/or ammoxidation. Preparation of at least one partial oxidation and/or ammoxidation product of propylene involves: (a) subjecting crude propane in the presence of and/or absence of oxygen to a homogeneously and/or a heterogeneously catalyzed dehydrogenation and/or oxydehydrogenation to obtain a propane- and propylene-containing gas mixture 1; (b) optionally removing and/or converting to other compounds a portion of the constituents other than propane and propylene contained in the gas mixture 1 to obtain a gas mixture 1' comprising propane and propylene and also compounds other than oxygen, propane and propylene; and (c) subjecting gas mixture 1 and/or gas mixture 1' as a constituent of a gas mixture 2 to a heterogeneously catalyzed gas phase partial oxidation and/or partial gas phase ammoxidation of propylene contained in gas mixture 1 and/or 1'. The total content of 4C-hydrocarbons of gas mixture 2 is at most 3 vol.%.

公开(公告)号：CA2495369A1

公开(公告)日：2004-03-18

申请号：CA2495369

申请日：2003-07-30

Applicant: BASF AG

Inventor： ADAMI CHRISTOPH ,  KARL JOERN ,  LENZ ROBERT ,  PASTRE JOERG ,  BOEHLING RALF ,  HAUK ALEXANDER

IPC: C07C51/09 ,  C07C51/43 ,  C07C51/44 ,  A61L9/00 ,  C07C53/02 ,  A23K3/03 ,  C07C53/06 ,  A23L1/304

Abstract: The invention relates to a method for producing formates according to which: (a) methyl formate is partially hydrolyzed with water; (b) methyl formate an d methanol are separated by distillation from the reaction mixture obtained in step (a) while forming a stream containing formic acid and water, and; (c) t he stream containing formic acid and water from step (b) is brought together wi th the corresponding formate while forming a mixture containing the formate and water. The invention also relates to a device for producing these formates a nd to the use thereof.

公开(公告)号：DE10237379A1

公开(公告)日：2004-02-19

申请号：DE10237379

申请日：2002-08-12

Applicant: BASF AG

Inventor： ADAMI CHRISTOPH ,  KARL JOERN ,  HAUK ALEXANDER ,  BOEHLING RALF ,  PASTRE JOERG ,  LENZ ROBERT

IPC: A23K1/16 ,  A01N1/00 ,  A01N3/00 ,  A61K31/19 ,  A61P3/00 ,  B01D9/02 ,  C07C51/09 ,  C07C51/41 ,  C07C53/06 ,  C07C27/02 ,  C07C51/43 ,  A61L2/16 ,  B09B3/00 ,  A23L3/34 ,  A23K1/00 ,  A23K3/00

Abstract: Formic acid-formates are produced by (a) partial hydrolysis of methyl formate (MF) with water, (b) distillation to give (S1) formic acid and water, (c) conversion of the other product from (b) (mainly MF) into a stream (S2) containing formate and water by reaction with aqueous strong base and distillation of methanol, and (d) combination of (S1) with (S2). A method for the production of formic acid-formates (I) involves: (a) partial hydrolysis of methyl formate (MF) with water; (b) distillation to give a stream (S1) containing formic acid and water; (c) conversion of the MF- and possibly methanol-containing stream from (b) into a formate- and water-containing stream (S2) by (i) reaction with a basic compound of an acid with a pKa value of at least 3 in presence of water followed by (ii) removal of methanol by distillation; and (d) combination of streams (S1) and (S2). An Independent claim is also included for apparatus for the production of (I), comprising: (A) a reactor for the hydrolysis of MF; (B) a distillation column for separating a stream containing MF, formic acid, methanol and water; (C) a column for the hydrolysis of MF with a basic compound with removal of methanol by distillation (with an inlet for the base above the inlet for the product from (B)); and (D) a column connected to the bottom of (B) for removing water from the stream containing formic acid and water.

公开(公告)号：DE10224341A1

公开(公告)日：2003-07-17

申请号：DE10224341

申请日：2002-05-29

Applicant: BASF AG

Inventor： ADAMI CHRISTOPH ,  BOEHLING RALF ,  MACHHAMMER OTTO ,  ZEHNER PETER ,  HECHLER CLAUS ,  SCHLIEPHAKE VOLKER ,  THIEL JOACHIM

IPC: C07C51/36 ,  C07C51/44 ,  C07C27/00 ,  C07C57/03 ,  C07C57/05 ,  C07C67/08 ,  C07C69/18 ,  C07C69/54

Abstract: The product mixture from the selective, partial gas-phase oxidation of propane, propene and/or acrolein is worked up by separation to give pure acrylic acid and a by-product mixture containing aldehydes and/or alkanoic acids together with some acrylic acid. Hydrogenation (optionally after esterification) is carried out to give propionic acid and/or its esters. A method for the production of acrylic acid (AA) and propionic acid (PA) and/or their esters involves: (1) selective, partial gas-phase oxidation of propane, propene and/or acrolein on a heterogeneous catalyst in zone 1 (reaction zone), to give a mixture (A) containing acrylic acid as the main product plus aldehydes and/or saturated alkanoic acids; (2) separation in zone 2 (work-up zone) to give (i) AA with a purity of at least 90 wt.% and (ii) a by-product mixture with a total content of aldehydes and/or alkanoic acids (in mol% based on acrylic acid content) which is greater than that of fraction (i); and (3) hydrogenation (optionally after esterification) of the AA in fraction (ii) to give PA and/or its esters.

公开(公告)号：AU7844901A

公开(公告)日：2001-12-24

申请号：AU7844901

申请日：2001-06-13

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  ADAMI CHRISTOPH ,  HECHLER CLAUS ,  ZEHNER PETER

IPC: C07C27/14 ,  B01J23/00 ,  B01J23/28 ,  B01J23/31 ,  B01J23/34 ,  B01J23/652 ,  B01J23/656 ,  B01J23/88 ,  B01J27/057 ,  B01J37/02 ,  C07B61/00 ,  C07C5/333 ,  C07C5/48 ,  C07C7/11 ,  C07C11/06 ,  C07C27/00 ,  C07C45/33 ,  C07C45/35 ,  C07C47/22 ,  C07C51/215 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07C57/07

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).