公开(公告)号：DE3108257A1

公开(公告)日：1982-09-16

申请号：DE3108257

申请日：1981-03-05

Applicant: BASF AG

Inventor： GROSSKINSKY OTTO-ALFRED DIPL C ,  FROMMER ELMAR DIPL CHEM DR ,  RAPP GUENTHER DIPL CHEM DR ,  THOMAS ERWIN

IPC: C01B21/14 ,  C01B21/087

公开(公告)号：DE3130305A1

公开(公告)日：1983-02-17

申请号：DE3130305

申请日：1981-07-31

Applicant: BASF AG

Inventor： GROSSKINSKY OTTO-ALFRED DIPL C ,  FROMMER ELMAR DIPL CHEM DR ,  RAPP GUENTHER DIPL CHEM DR ,  THOMAS ERWIN

IPC: C07C239/08 ,  B01J23/42 ,  C01B21/14 ,  C07C67/00 ,  C07C239/00

公开(公告)号：DE2508247A1

公开(公告)日：1976-09-09

申请号：DE2508247

申请日：1975-02-26

Applicant: BASF AG

Inventor： RAPP GUENTHER DIPL CHEM DR ,  FUCHS HUGO DIPL CHEM DR ,  THOMAS ERWIN

IPC: C07D223/08 ,  C07C67/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D223/10 ,  C07C131/04

Abstract: An improved process for the manufacture of cyclohexanone oxime by reacting cyclohexanone with an aqueous hydroxylammonium-ammonium sulfate solution at temperatures above the melting point of cyclohexanone oxime by the countercurrent process, the improvement consisting in that the reaction is carried out in the absence of solvents and neutralizing and/or buffer salts at pHs of up to 0.5 until equilibrium is reached, the oximes resulting during the reaction being separated from the aqueous phase and the aqueous phase being extracted with cyclohexanone and then subjected to steam distillation.

公开(公告)号：DE3108075A1

公开(公告)日：1982-09-16

申请号：DE3108075

申请日：1981-03-04

Applicant: BASF AG

Inventor： GROSSKINSKY OTTO-ALFRED DIPL C ,  FROMMER ELMAR DIPL CHEM DR ,  RAPP GUENTHER DIPL CHEM DR ,  THOMAS ERWIN ,  SCHMITZ RUEDIGER DIPL ING

IPC: B01D53/56 ,  B01D53/77 ,  C01B21/14 ,  B01D53/36

Abstract: A process for removing nitrous oxide from exit gases which contain this compound and have been obtained in the preparation of hydroxylammonium salts by catalytic reduction of nitric oxide with hydrogen in an aqueous solution of a mineral acid, in the presence of a suspended noble metal catalyst, wherein the exit gases are washed with water.

公开(公告)号：DE3107702A1

公开(公告)日：1982-09-16

申请号：DE3107702

申请日：1981-02-28

Applicant: BASF AG

Inventor： GROSSKINSKY OTTO-ALFRED DIPL C ,  FROMMER ELMAR DIPL CHEM DR ,  RAPP GUENTHER DIPL CHEM DR ,  THOMAS ERWIN

IPC: C01B21/14

Abstract: An improved process for the continuous preparation of hydroxylammonium salts by catalytic reduction of nitric oxide with hydrogen in a dilute aqueous solution of a mineral acid in the presence of a suspended noble metal catalyst at an elevated temperature in several reaction zones connected in series, wherein the improvement comprises maintaining a pH of

公开(公告)号：DE2736872A1

公开(公告)日：1979-02-22

申请号：DE2736872

申请日：1977-08-16

Applicant: BASF AG

Inventor： RAPP GUENTHER DIPL CHEM DR ,  THOMAS ERWIN ,  WOLF DIETER DIPL ING DR ,  KUERTEN HERIBERT DIPL ING DR ,  ZEHNER PETER DIPL ING DR

IPC: B01J10/00 ,  B01J19/24 ,  B01J19/26 ,  B01J23/00 ,  C01B21/14

Abstract: Hydroxylammonium salts are manufactured by a process comprising the catalytic reduction of nitric oxide with hydrogen in a dilute aqueous solution of a mineral acid in the presence of a suspended platinum catalyst at an elevated temperature, wherein the reaction mixture is recycled and the gas mixture, containing nitric oxide and hydrogen, present in the gas space above the reaction zone, is introduced, by means of one or more downwardly directed jets of liquid, consisting of the recycled reaction mixture and issuing from a nozzle orifice, into one or more circulation zones which are present in the reaction zone, are open at both sides, extend in the direction of the entering jet of liquid and are completely covered by the reaction mixture, the reaction mixture leaving the bottom of the circulation zone and containing unconverted gases is deflected, passed upwards in the annular zone externally surrounding the circulation zone, and at the same time reaction mixture of low gas content is recycled from a separation zone located under the reaction zone.