公开(公告)号：AT335709T

公开(公告)日：2006-09-15

申请号：AT02745423

申请日：2002-07-02

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  THIEL JOACHIM ,  KRUEGER HEINZ ,  STROEFER ECKHARD ,  WEBER MARKUS ,  GERBER BERND ,  RUMPF BERND ,  SACHWEH BERND ,  KERTH STEFFEN

IPC: B01D3/16 ,  B01J19/30 ,  B01J19/32 ,  C01B21/14

Abstract: A process for preparing a salt-free aqueous hydroxylamine solution by distilling an aqueous solution of a hydroxylammonium salt and a base in a tray column having at least two mechanical trays, wherein random or structured packings are located above at least one tray of the tray column over the cross section of the column.

公开(公告)号：BR0314233A

公开(公告)日：2005-07-26

申请号：BR0314233

申请日：2003-09-08

Applicant: BASF AG

Inventor： THIEL JOACHIM ,  HAMMON ULRICH ,  GERBER BERND ,  JANSEN HELMUT ,  KAIBEL BJOERN

IPC: B01D3/20 ,  B01D3/32 ,  B01D9/00 ,  B01J8/04 ,  B01J10/00 ,  B01D3/18

Abstract: A hydraulically sealed crossflow mass transfer tray, separating columns which contain the hydraulically sealed crossflow mass transfer tray and the use of such separating columns for thermal separating processes.

公开(公告)号：DE10243625A1

公开(公告)日：2004-04-01

申请号：DE10243625

申请日：2002-09-19

Applicant: BASF AG

Inventor： THIEL JOACHIM ,  HAMMON ULRICH ,  GERBER BERND ,  JANSEN HELMUT ,  KAIBEL BJOERN

IPC: B01D3/20 ,  B01D3/32 ,  B01D9/00 ,  B01J8/04 ,  B01J10/00 ,  B01D3/00

Abstract: A hydraulically sealed crossflow mass transfer tray, separating columns which contain the hydraulically sealed crossflow mass transfer tray and the use of such separating columns for thermal separating processes.

公开(公告)号：CA2465811A1

公开(公告)日：2003-05-22

申请号：CA2465811

申请日：2002-11-12

Applicant: BASF AG

Inventor： BECK KARL ,  FREUND TORSTEN ,  GERBER BERND

IPC: C07C209/84 ,  C07C209/86 ,  C07C211/03 ,  C07C211/08 ,  C07C209/82

Abstract: The invention relates to a method for isolating amines from aqueous solution s by means of continuous distillation of aqueous solutions of the amines according to a dual-pressure method for the rectification of aqueous solutio ns of amines forming an azeotrope with water, the composition of said azeotrope being pressure-dependent. The distillation is carried out in two columns und er different pressures. According to the inventive method, a) the pressure in t he second column is set at least 0.5 bar higher than the pressure in the first column, b) the aqueous amine solution is supplied to the first column in a side stream, and water and parts which boil at a higher temperature than the amines or are non-volatile are exfiltrated out of the bottom of the column, c) a mixture of amine and water is removed at the head of the first column and is guided into the second column in a side stream, d) an azeotrope of water and amine is removed at the head of the second column and is redirected into the first column, and e) the purified amines are extracted at the bottom of the second column.

公开(公告)号：CA2451869A1

公开(公告)日：2003-01-16

申请号：CA2451869

申请日：2002-07-02

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  KERTH STEFFEN ,  KRUEGER HEINZ ,  THIEL JOACHIM ,  STROEFER ECKHARD ,  SACHWEH BERND ,  RUMPF BERND ,  GERBER BERND ,  WEBER MARKUS

IPC: B01D3/14 ,  B01D3/16 ,  B01J19/30 ,  B01J19/32 ,  C01B21/14

Abstract: The invention relates to a method for producing a highly pure, aqueous hydroxylamine solution by distilling an aqueous solution, devoid of salt, of a hydroxyl ammonium salt in a plate column comprising at least two mechanical plates. Said method is characterised in that packing bodies are arranged between at least two plates of the plate column over the cross-section of sa id column.