公开(公告)号：DK57687A

公开(公告)日：1987-08-06

申请号：DK57687

申请日：1987-02-04

Applicant: BASF AG

Inventor： KROENER MICHAEL ,  SCHMIDT WILLI ,  OFTRING ALFRED ,  PROLL THEO ,  HARTMANN HEINRICH

IPC: C07C231/24 ,  C07C67/00 ,  C07C231/00 ,  C07C233/00 ,  C07C233/03 ,  C07C233/15 ,  C08F26/00 ,  C08F126/02 ,  C07C103/365 ,  C07C102/00

公开(公告)号：FI844506L

公开(公告)日：1985-05-30

申请号：FI844506

申请日：1984-11-16

Applicant: BASF AG

Inventor： PFOHL SIGBERG ,  HARTMANN HEINRICH ,  KLAHR ERHARD ,  PROLL THEO

IPC: D21H17/37 ,  C08F8/00 ,  D21H17/38 ,  C08F

公开(公告)号：MY116400A

公开(公告)日：2004-01-31

申请号：MYPI9700592

申请日：1997-02-18

Applicant: BASF AG

Inventor： DAMS ALBRECHT ,  ECK BERND ,  MACHHMMER OTTO ,  PROLL THEO

IPC: C07C57/04 ,  C07C57/07 ,  C07C51/43 ,  C07C57/05

Abstract: ACRYLIC ACID OR METHACRYLIC ACID IS PURIFIED BY (A) SUBJECTING A MIXTURE COMPRISING THE ACRYLIC ACID OR METHACRYLIC ACID TO A SHARPLY DEFINED SEPARATION PROCESS ESSENTIALLY IN THE ABSENCE OF AN ORGANIC SOLVENT, WITH THE COMPOSITION OF THE PHASE IN WHICH THE ACRYLIC ACID OR METHACRYLIC ACID ACCUMULATES REMAINING ESSENTIALLY CONSTANT WHEN THE COMPOSITION OF THE OTHER PHASES PARTICIPATING IN THE MASS TRANSFER CHANGES, THEN TAKING OFF THIS PHASE AND (A) SUBJECTING AT LEAST A PART OF THE REMAINING PHASE FROM STAGE (A) TO A LESS SHARPLY DEFINED SEPARATION PROCESS AND (B) FEEDING ONE OF THE PHASES FORMED IN STAGE (B) TO THE SHARPLY DEFINED SEPARATION PROCESS IN STAGE (A).IN ADDITION, THE INVENTION PROVIDES A PROCESS FOR PREPARING ACRYLIC ACID OR METHACRYLIC ACID WHICH INCLUDES THE ABOVEMENTIONED PURIFICATION PROCESS.

公开(公告)号：DE59704681D1

公开(公告)日：2001-10-25

申请号：DE59704681

申请日：1997-05-28

Applicant: BASF AG

Inventor： TENTEN ANDREAS ,  PROLL THEO ,  SCHILDBERG HANS-PETER

IPC: B01J23/68 ,  B01J23/31 ,  B01J27/198 ,  B01J27/199 ,  C07B61/00 ,  C07C45/33 ,  C07C47/22 ,  C07C51/25 ,  C07C57/04 ,  C07C57/055

Abstract: In an industrial process for the heterogeneously catalyzed gas-phase oxidation of propane with molecular oxygen to give acrolein, the feed gas mixture having an initial undiluted molar ratio of the reactants propane:O2 of 7:3 is diluted with the reactant propane and, if desired, inert gases in such a way that the feed gas mixture comprises more than 70% by volume of propane and at least 5% by volume of O2.

公开(公告)号：BR9811450A

公开(公告)日：2000-08-15

申请号：BR9811450

申请日：1998-09-10

Applicant: BASF AG

Inventor： ECK BERND ,  MACHHAMMER OTTO ,  PROLL THEO ,  SCHLIEPHAKE VOLKER ,  THIEL JOACHIM ,  LLOS KLAUS BR

IPC: B01D5/00 ,  C07C51/44 ,  C07C57/07

Abstract: A process for the fractional condensation of a gas mixture which, in addition to acrylic acid or methacrylic acid, also contains at least one further condensable component and additionally a high proportion of one or more noncondensable components, wherein the gas mixture is passed through a column having separatory internals and the condensable components are condensed by cooling.

公开(公告)号：CZ9803944A3

公开(公告)日：1999-09-15

申请号：CZ394498

申请日：1997-05-28

Applicant: BASF AG

Inventor： TENTEN ANDREAS ,  PROLL THEO ,  SCHILDBERG HANS-PETER

IPC: B01J23/68 ,  B01J23/31 ,  B01J27/198 ,  B01J27/199 ,  C07B61/00 ,  C07C45/33 ,  C07C47/22 ,  C07C51/25 ,  C07C57/04 ,  C07C57/055

CPC classification number: C07C45/33 ,  B01J23/31 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

公开(公告)号：CZ394498A3

公开(公告)日：1999-09-15

申请号：CZ394498

申请日：1997-05-28

Applicant: BASF AG

Inventor： TENTEN ANDREAS ,  PROLL THEO ,  SCHILDBERG HANS-PETER

IPC: B01J23/68 ,  B01J23/31 ,  B01J27/198 ,  B01J27/199 ,  C07B61/00 ,  C07C45/33 ,  C07C47/22 ,  C07C51/25 ,  C07C57/04 ,  C07C57/055

Abstract: In an industrial process for the heterogeneously catalyzed gas-phase oxidation of propane with molecular oxygen to give acrolein, the feed gas mixture having an initial undiluted molar ratio of the reactants propane:O2 of 7:3 is diluted with the reactant propane and, if desired, inert gases in such a way that the feed gas mixture comprises more than 70% by volume of propane and at least 5% by volume of O2.

公开(公告)号：CA2303373A1

公开(公告)日：1999-03-25

申请号：CA2303373

申请日：1998-09-10

Applicant: BASF AG

Inventor： SCHLIEPHAKE VOLKER ,  BROLLOS KLAUS ,  THIEL JOACHIM ,  PROLL THEO ,  MACHHAMMER OTTO ,  ECK BERND

IPC: B01D5/00 ,  C07C51/44 ,  C07C57/07

Abstract: The invention relates to a method for the fractional condensation of a gas mixture which contains at least one other condensable constituent in addition to acrylic acid or methacrylic acid and which also has a high proportion of one or several non-condensable constituents. According to said method, the gas mixture is passed through a column with separation-efficient baffles and the condensable constituents are condensed out by cooling.

公开(公告)号：CZ9700063A3

公开(公告)日：1998-04-15

申请号：CZ6397

申请日：1997-01-09

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  DOCKNER TONI ,  ENGERT GERD-JUERGEN ,  PROLL THEO

IPC: B01D9/02 ,  B01D3/00 ,  C07B61/00 ,  C07C51/235 ,  C07C51/25 ,  C07C51/43 ,  C07C51/48 ,  C07C57/04 ,  C07C57/05 ,  C07C57/055 ,  C07C57/07 ,  C07C69/54

CPC classification number: C07C51/43 ,  Y02P20/582 ,  C07C57/04

公开(公告)号：CZ6397A3

公开(公告)日：1998-04-15

申请号：CZ6397

申请日：1997-01-09

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  DOCKNER TONI ,  ENGERT GERD-JUERGEN ,  PROLL THEO

IPC: B01D9/02 ,  B01D3/00 ,  C07B61/00 ,  C07C51/235 ,  C07C51/25 ,  C07C51/43 ,  C07C51/48 ,  C07C57/04 ,  C07C57/05 ,  C07C57/055 ,  C07C57/07 ,  C07C69/54

Abstract: The production of acrylic acid (I) and/or its esters comprises; (a) catalytic gas-phase oxidation of propene and/or acrolein to give a gaseous product containing (I), (b) absorption of the reaction product with a solvent, (c) distillation in a column to give crude (I) and solvent, (d) purification of (I) by crystallisation and optionally (e) esterification of crystallised (I). Also claimed is an apparatus for the process, comprising reactor(s) for stage (a), an absorption column, a distillation column, dynamic crystalliser(s) and static crystalliser(s), and container(s) for intermediate storage.