公开(公告)号：MY140513A

公开(公告)日：2009-12-31

申请号：MYPI20060850

申请日：2006-02-28

Applicant: BASF AG

Inventor： HEILEK JOERG ,  MUELLER-ENGEL KLAUS JOACHIM DR ,  ADAMI CHRISTOPH DR ,  DIETERLE MARTIN DR

IPC: C07C51/573

Abstract: A PROCESS FOR REMOVING METHACROLEIN FROM LIQUID PHASE P COMPRISING ACRYLIC ACID AS A MAIN CONSTITUENT AND TARGET PRODUCT, AND METHACROLEIN AS A SECONDARY COMPONENT IN WHICH THE REMOVAL IS EFFECTED BY CRYSTALLIZATION. THE ACRYLIC ACID ACCUMULATING IN THE CRYSTALS FORMED AND THE METHACROLEIN IN 'THE REMAINING MOTHER LIQUOR.

公开(公告)号：MY128271A

公开(公告)日：2007-01-31

申请号：MYPI20010312

申请日：2001-01-23

Applicant: BASF AG

Inventor： DECKER EMILE DE ,  BASTIAENSEN ERIK DR ,  BAUMANN DIETER ,  ECK BERND ,  HEILEK JOERG

IPC: C07C51/42 ,  C07C51/43 ,  C07C57/07

Abstract: (METH)ACRYLIC ACID IS PURIFIED BY CRYSTALLIZATION BY A PROCESS IN WHICH THE (METH) ACRYLIC ACID IS PURIFIED BY A COMBINATION OF AT LEAST TWO DIFFERENT DYNAMIC CRYSTALLIZATION PROCESSES, IN PARTICULAR A SUSPENSION CRYSTALLIZATION AND A LAYER CRYSTALLIZATION.(FIG 1A)

公开(公告)号：DE102005020890A1

公开(公告)日：2006-11-09

申请号：DE102005020890

申请日：2005-05-04

Applicant: BASF AG

Inventor： HAUK ALEXANDER ,  GROPP STEFAN ,  LENZ ROBERT ,  RIECK DANIELA ,  HEILEK JOERG ,  LAUX GERHARD

IPC: C07C53/06 ,  C07C51/41 ,  C07C51/43 ,  C07C53/02

Abstract: The calculation of the above balance shows that the division of stream (5) into the streams (5a) and (5b) used here leads to the fact that in the neutralization stage no excess sodium formate is produced, so that any ejection can be omitted. Furthermore, the water content of the stream (14) comprising sodium formate recirculated to the first crystallization stage in this case can be set to a very low value.

公开(公告)号：DE50205891D1

公开(公告)日：2006-04-27

申请号：DE50205891

申请日：2002-11-08

Applicant: BASF AG

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

IPC: B01D9/00 ,  B01D9/02 ,  C07B61/00 ,  C07B63/00 ,  C07C7/14 ,  C07C15/08 ,  C07C51/43 ,  C07C51/47 ,  C07C57/04 ,  C07C57/07

公开(公告)号：BR0314992A

公开(公告)日：2005-08-09

申请号：BR0314992

申请日：2003-10-06

Applicant: BASF AG

Inventor： THIEL JOACHIM ,  HAMMON ULRICH ,  BAUMANN DIETER ,  HEILEK JOERG ,  SCHROEDER JUERGEN ,  MUELLER-ENGEL KLAUS JOACHIM

IPC: C07C51/44 ,  C07C57/04

Abstract: In a process for preparing acrylic acid, an acrylic acid-containing product gas mixture obtained by catalytic gas phase partial oxidation of a C 3 precursor of acrylic acid, after direct cooling with a quench liquid, is fractionally condensed in a separating column provided with internals, rising into itself with sidestream takeoff of crude acrylic acid, and the acrylic acid oligomers which form are dissociated and the resulting dissociation gas is subjected to a countercurrent rectification before it is recycled.

公开(公告)号：DE10036881A1

公开(公告)日：2002-02-07

申请号：DE10036881

申请日：2000-07-28

Applicant: BASF AG

Inventor： HEILEK JOERG ,  ECK BERND ,  BAUMANN DIETER

IPC: C07C51/43 ,  C07C51/47 ,  B01D9/00

Abstract: Purifying crude acrylic acid melt by converting to a crude acrylic acid suspension by cooling, and separating from remaining residual melt in wash column. In purifying a crude melt of acrylic acid (I) containing (excluding water) \- 80 wt.% (I), \- 100 ppm weight acetic acid and \- 10 ppm weight propionic acid, a suspension of purer (I) crystals (IA) and less pure residual melt (II) is produced by cooling the crude melt in the presence of 0.20- 10 wt.% water with respect to (I); and, after optional mechanical separation of part of (II), (IA) are freed from (II) in a column operating with forced transport of (IA) by washing with a melt of purified (IA).

公开(公告)号：DE10003497A1

公开(公告)日：2001-04-12

申请号：DE10003497

申请日：2000-01-27

Applicant: BASF AG

Inventor： ECK BERND ,  HEILEK JOERG ,  BAUMANN DIETER ,  DECKER EMILE DE ,  BASTIAENSEN ERIK

IPC: C07C51/43 ,  C07C57/07

Abstract: Purification of (meth)acrylic acid by fractional crystallisation of a liquid mixture is such that (a) the lowest crystallisation stage (S1) is effected dynamically; and (b) the mother liquor from stage (S1) contains >=20 (especially >=45) wt.% impurities other than water.

公开(公告)号：DE59606369D1

公开(公告)日：2001-03-01

申请号：DE59606369

申请日：1996-10-02

Applicant: BASF AG

Inventor： BORHO DR ,  HEILEK JOERG ,  SCHNABEL DR

IPC: B01D9/02 ,  B01D9/00 ,  C07B57/00 ,  C07B63/00 ,  C07C51/43 ,  C07C51/487 ,  C07C67/52

公开(公告)号：DE19536827A1

公开(公告)日：1997-04-03

申请号：DE19536827

申请日：1995-10-02

Applicant: BASF AG

Inventor： BORHO KLAUS DR ,  HEILEK JOERG ,  SCHNABEL GUNTER DR

IPC: B01D9/02 ,  B01D9/00 ,  C07B57/00 ,  C07B63/00 ,  C07C51/43 ,  C07C51/487 ,  C07C67/52

公开(公告)号：CZ303896B6

公开(公告)日：2013-06-12

申请号：CZ20023376

申请日：2001-04-04

Applicant: BASF AG

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

IPC: C07C51/43 ,  C07C51/47 ,  C07C57/04 ,  C07C57/07

Abstract: Zpusob cistení taveniny surové kyseliny akrylové, pri kterém se tato surová kyselina mení za pusobení nízkých teplot na suspenzi surové kyseliny akrylové, sestávající se z krystalu kyseliny akrylové a zbytkové taveniny, pricemz krystaly kyseliny akrylové v této suspenzi se zbavují ulpívající zbytkové taveniny na promývací kolone. Krystaly cistsí kyseliny akrylové v suspenzi surové kyseliny akrylové se vytvárejí za prítomnosti vody. Promývací kolona vyuzívá nucený transport krystalu kyseliny akrylové a jako promývací kapalina se pouzívá tavenina krystalu kyseliny akrylové, vycistených na promývací kolone.