公开(公告)号：AT220386T

公开(公告)日：2002-07-15

申请号：AT98943835

申请日：1998-08-04

Applicant: BASF AG

Inventor： WATZENBERGER OTTO ,  MAUER PETER ,  STROEFER ECKHARD ,  SCHELLING HEINER ,  SCHNEIDER HANS-MICHAEL

IPC: C01B21/14

Abstract: An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.

公开(公告)号：TR200000299T2

公开(公告)日：2001-01-22

申请号：TR200000299

申请日：1998-08-04

Applicant: BASF AG

Inventor： WATZENBERGER OTTO ,  MAUER PETER ,  STROEFER ECKHARD ,  SCHELLING HEINER ,  SCHNEIDER HANS-MICHAEL

IPC: C01B21/14

Abstract: An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.

公开(公告)号：BR9811119A

公开(公告)日：2000-07-18

申请号：BR9811119

申请日：1998-08-04

Applicant: BASF AG

Inventor： WATZENBERGER OTTO ,  MAUER PETER ,  FER ECKHARD STR ,  SCHELLING HEINER ,  SCHNEIDER HANS-MICHAEL

IPC: C01B21/14

Abstract: An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.

公开(公告)号：NO20000551L

公开(公告)日：2000-04-04

申请号：NO20000551

申请日：2000-02-03

Applicant: BASF AG

Inventor： WATZENBERGER OTTO ,  MAUER PETER ,  STROEFER ECKHARD ,  SCHELLING HEINER ,  SCHNEIDER HANS-MICHAEL

IPC: C01B21/14 ,  C01B

Abstract: An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.

公开(公告)号：NO20000551A

公开(公告)日：2000-04-04

申请号：NO20000551

申请日：2000-02-03

Applicant: BASF AG

Inventor： WATZENBERGER OTTO ,  MAUER PETER ,  STROEFER ECKHARD ,  SCHELLING HEINER ,  SCHNEIDER HANS-MICHAEL

IPC: C01B21/14 ,  C01B

CPC classification number: C01B21/1445

公开(公告)号：AU9158698A

公开(公告)日：1999-03-01

申请号：AU9158698

申请日：1998-08-04

Applicant: BASF AG

Inventor： WATZENBERGER OTTO ,  MAUER PETER ,  STROFER ECKHARD ,  SCHELLING HEINER ,  SCHNEIDER HANS-MICHAEL

IPC: C01B21/14

Abstract: An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.