公开(公告)号：ES2208289T3

公开(公告)日：2004-06-16

申请号：ES00912516

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：DE10332758A1

公开(公告)日：2004-05-27

申请号：DE10332758

申请日：2003-07-17

Applicant: BASF AG

Inventor： ECK BERND ,  HAMMON ULRICH ,  MUELLER-ENGEL KLAUS JOACHIM ,  SCHROEDER JUERGEN ,  THIEL JOACHIM ,  MARTAN HANS

IPC: B01D3/14 ,  B01D3/32 ,  C07C51/215 ,  C07C51/25 ,  C07C51/43 ,  C07C51/44 ,  C07C57/07 ,  C07C57/05

Abstract: A thermal separation process for the separation of at least one (meth)acrylic monomer enriched material stream from a (meth)acrylic monomer containing mixture comprises use of a device having separate volume elements in which the liquid temperature does not differ by more than 2 degreesC and the total residence time is no greater than 20 hours. A thermal separation process for the separation of at least one (meth)acrylic monomer enriched material stream from a (meth)acrylic monomer containing mixture, comprising the continuous stationary operation of at least one thermal separation device comprising at least one separating chamber optionally containing inserts to which at least one (meth)acrylic monomer containing stream is removed whereby the material stream that is fed to the separator chamber contains x wt.% of components that are different to (meth)acrylic monomers; the material stream having the highest content by weight of (meth)acrylic monomers that is removed from the separator chamber contains y wt.% of components that are different to (meth)acrylic monomers whereby the ratio x:y is at least 5; the separator chamber, excluding inlets and outlets is bordered by a solid phase, comprises at least one recirculating heat exchanger and has a liquid phase filled total volume of at least 1 m3 whereby the temperature of the liquid phase is at least 80 degreesC; and is characterized by subdivision of the separating cavity into n individual volume elements whereby the highest and lowest temperature in the liquid phase within the separate volume elements does not differ by more than 2 degreesC; the total residence time is as defined by equation (1) and is no greater than 20 hours. tges = integral(i=1 to n) msi/mi x 2A (1) To = 100 degreesC; Ti = the arithmetic mean value of the highest and lowest temperature in i volume elements; msi = the total mass of (meth)acrylic monomers in i volume elements containing liquid phase; mi = the total liquid phase mass flow from i volume element. The total amount of liquid phase contained within dead-volume elements is not greater than 5 wt.% of the total liquid phase within the separator chamber.

公开(公告)号：DE10232482A1

公开(公告)日：2004-01-29

申请号：DE10232482

申请日：2002-07-17

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  MESCHKE JOCHEN ,  RAUH ULRICH ,  MUELLER-ENGEL KLAUS JOACHIM ,  SCHLEMMER PETER

IPC: B01J4/00 ,  C07B61/00 ,  C07C45/33 ,  C07C45/34 ,  C07C45/35 ,  C07C47/22 ,  C07C51/215 ,  C07C51/25 ,  C07C57/05 ,  C07B33/00 ,  C07B41/00

公开(公告)号：AU2003258504A1

公开(公告)日：2004-01-23

申请号：AU2003258504

申请日：2003-07-02

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  THIEL JOACHIM ,  SCHLIEPHAKE VOLKER ,  SCHRODER JURGEN

IPC: B01D3/22 ,  C07C51/44

Abstract: A process for rectificatively separating at least one (meth)acrylic monomer-containing fluid by feeding the fluid into a rectification column containing at least one sieve tray without a runoff segment, wherein an elementary cell is obtained from a number of centers of passages in a sieve tray, and the cell shifts regularly and repeatedly along its edges, the lengths of two shifting vectors being the lengths of the edges of the cell along which the shifting is effected; an arrangement of the centers is such that the positions of an ideal center and a real center are separated by

公开(公告)号：DE10230219A1

公开(公告)日：2004-01-22

申请号：DE10230219

申请日：2002-07-04

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  THIEL JOACHIM ,  SCHLIEPHAKE VOLKER ,  SCHROEDER JUERGEN

IPC: B01D3/22 ,  C07C51/44 ,  C07C57/07

Abstract: A process for rectificatively separating at least one (meth)acrylic monomer-containing fluid by feeding the fluid into a rectification column containing at least one sieve tray without a runoff segment, wherein an elementary cell is obtained from a number of centers of passages in a sieve tray, and the cell shifts regularly and repeatedly along its edges, the lengths of two shifting vectors being the lengths of the edges of the cell along which the shifting is effected; an arrangement of the centers is such that the positions of an ideal center and a real center are separated by

公开(公告)号：DE10223058A1

公开(公告)日：2003-12-11

申请号：DE10223058

申请日：2002-05-24

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  BAUMANN DIETER ,  HEILEK JOERG ,  MUELLER-ENGEL KLAUS JOACHIM ,  ECK BERND

IPC: B01D9/00 ,  C07C7/14 ,  C07C57/07 ,  C07D207/26 ,  C07D207/267 ,  C08G69/24 ,  C08L39/06

Abstract: Process for the separation of crystals from suspension in a mother liquor comprises addition of the suspension to a wash column having a wall enveloping a process chamber. The wall is of metal and the face away from the process chamber is heated along at least the length of the purified melt zone. A process for the separation of crystals from suspension in a mother liquor comprises: (a) addition of the suspension to a wash column having a wall enveloping a process chamber, (b) feeding of the suspension to the process chamber to form a bed of crystals in the chamber and (c) conveying of the bed of crystals in the process chamber by means of gravity with a counter current flow of a purified melt of the crystals to form a wash front such that the bed of crystals is partitioned into a mother liquor zone and a purified melt zone. The wall is of metal and is heated on the face away from the process chamber along at least the length of the purified melt zone.

公开(公告)号：DE50004251D1

公开(公告)日：2003-12-04

申请号：DE50004251

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：AU2003218734A1

公开(公告)日：2003-09-22

申请号：AU2003218734

申请日：2003-03-12

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  SCHRODER JURGEN ,  RISSEL STEFFEN

IPC: G01L7/00 ,  C07C51/44 ,  C07C51/48 ,  C07C57/04 ,  C07C67/54 ,  C07C253/34 ,  C07C255/08 ,  G01L19/00 ,  C07C69/54 ,  B01D3/00 ,  B01D3/32 ,  C07C57/07

Abstract: A process measures the pressure of a gas phase containing (meth)acrylic acid, the esters and/or nitrites thereof of a rectification and/or absorption column via open drillholes in the column wall and lines from the drillholes to the transducers by purging the lines with an oxygen-containing gas in the direction toward the open drillhole.

公开(公告)号：DE10064642A1

公开(公告)日：2002-06-27

申请号：DE10064642

申请日：2000-12-22

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  SUTORIS HEINZ FRIEDRICH ,  SCHROEDER JUERGEN ,  SCHLIEPHAKE VOLKER

IPC: C07C51/44 ,  C07C51/50 ,  C07C57/07 ,  C07C57/075 ,  C07C43/23 ,  C07C57/04

Abstract: A method for working up (meth)acrylic acid in the presence of stabilizer(s) involves: (i) feeding an essentially (meth)acrylic acid-free, stabilizer-containing mixture arising from the work-up into a distillation apparatus; and (ii) recycling a stabilizer-containing low-boiling stream from this apparatus to the work-up process.

公开(公告)号：DE10047693A1

公开(公告)日：2002-04-11

申请号：DE10047693

申请日：2000-09-25

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  HAMMON ULRICH ,  CORR FRANZ

IPC: B01J8/00 ,  B01J8/06

Abstract: A process for lengthening the service life of catalysts comprises using a charge of inert material in the contact tubes, the tubular base and between the base and gas inlet and outlet hood of the reactor. Independent claims are also included for: (a) a container for stabilizing an inert material against drifting; (b) a tubular reactor comprising a reactor casing, bases (11, 12), contact tubes (4), gas inlet and outlet hoods (1, 2), and inlet and outlet openings for process gas and heat carriers. The lower hood is connected to a hydraulic lowering device; and (c) a process for burning off deposits on the insert material comprising treating the deposits with an oxygen-containing gas containing 0.1-50 vol.% oxygen at 200-800 deg C and 0.01-5.0 MPa pressure.