公开(公告)号：DE2637108A1

公开(公告)日：1978-02-23

申请号：DE2637108

申请日：1976-08-18

Applicant: BASF AG

Inventor： ENGELHARDT HUBERT DIPL ING ,  GLEICH WOLFGANG ING GRAD ,  KUERTEN HERIBERT DIPL ING DR ,  LEIB HEINZ DIPL ING ,  NAGEL OTTO DIPL ING DR ,  ZEHNER PETER DIPL ING DR

IPC: C02F3/12 ,  C02F3/14 ,  C02F3/16 ,  C02C1/10

Abstract: The immediate spray area of the stirrer is protected with a dome having 2-6 (pref. 2.5-4) times the stirrer's diameter. The air stream which is carried along by the dome's walls which dip into the liquid, pref. in the form of fine bubbles, is 0.05-2 times (pref. 0.2-0.5 times) the water stream agitated by the stirrer. The activated sludge is also kept in suspension. Only the immediate stirrer area of the tank need be covered. Pref. the moment of the stirrer and dome is 1.5-3 times that of an unprotected stirrer at the same depth of immersion and speed of rotation.

公开(公告)号：DE2645780A1

公开(公告)日：1978-04-13

申请号：DE2645780

申请日：1976-10-09

Applicant: BASF AG

Inventor： KUERTEN HERIBERT DIPL CHEM DR ,  NAGEL OTTO DIPL ING DR ,  ZEHNER PETER DIPL ING DR

IPC: B01F3/04 ,  B01F3/08 ,  B01F5/02 ,  B01F5/10 ,  B01J8/22 ,  B01J10/00 ,  B01J19/24 ,  B01J19/26

Abstract: A process for treating a liquid with a gas in a circulatory reactor, in which the gas is introduced by a jet of liquid into a circulating liquid, is entrained downwards in a tube, rises in an annular space surrounding the tube and-if it has not reacted completely-is again entrained downward over the upper edge of the tube. Using the process according to the invention, a very uniform gas distribution and, in the case of heterogeneous reactions, also a very uniform distribution of the suspended catalyst, is achieved over the entire reaction space.