公开(公告)号：DE2712414A1

公开(公告)日：1978-09-28

申请号：DE2712414

申请日：1977-03-22

Applicant: BASF AG

Inventor： DAUCHER HANS DIPL ING DR ,  DRESSEL MANFRED DIPL ING ,  HESS KLAUS DIPL ING DR ,  ENGELHARDT HUBERT DIPL ING

IPC: B01D21/34 ,  B01D29/00 ,  B01D29/01 ,  B01D29/05 ,  B01D33/073 ,  B01D37/00 ,  B01D29/04 ,  C02C1/22

Abstract: A process and apparatus for removing suspended matter from suspensions by filtering through foams, in which the suspended matter retained in the foam (polyurethane foam produced by foaming with water vapor being preferred) is substantially flushed out by expressing the liquid held in the foam, and is removed as a concentrate. This for the the first time permits the removal of suspended matter from continuously flowing suspensions without the flow of the suspensions having to be interrupted in order to clean the filtering means.

公开(公告)号：DE3002604A1

公开(公告)日：1981-07-30

申请号：DE3002604

申请日：1980-01-25

Applicant: BASF AG

Inventor： BRAHA ALEXANDRU DIPL ING ,  DAUCHER HANS-HELMUT DIPL ING D ,  HESS KLAUS DIPL ING DR ,  KROETZSCH PETER DIPL ING DR ,  MERKEL HELMUT ING GRAD ,  ROEDL ROLAND DIPL ING DR ,  SCHWAEGERL WALTER ING GRAD ,  STICKEL RICHARD DIPL ING

IPC: C02F3/12 ,  C02F3/30

公开(公告)号：DE2920350A1

公开(公告)日：1980-11-20

申请号：DE2920350

申请日：1979-05-19

Applicant: BASF AG

Inventor： SANDER BRUNO DIPL CHEM DR ,  HESS KLAUS DIPL ING DR ,  LINTZ PETER ING GRAD ,  GOESELE WALTER DIPL ING DR

IPC: B01D25/00 ,  B01D37/00 ,  B01D37/03 ,  C02F11/12

Abstract: A process for dewatering sewage sludges, the dewatering characteristics of which have been improved by adding an organic flocculant, on a chamber filter press, wherein the greater part of the water in the flocculated sludges is removed by gravity filtration in a process step upstream of the chamber filter press, without application of a pressure difference, and the actual pressure filtration, on the chamber filter press, is only then carried out. In principle, commercial products can be used as the organic flocculant. These are water-soluble, macromolecular compounds which have been obtained by polymerization or copolymerization of acrylamide, acrylic cid and/or their salts, or of esters of acrylic acid or methacrylic acid with specifically modified alcohol components.

公开(公告)号：DE3218227A1

公开(公告)日：1983-11-17

申请号：DE3218227

申请日：1982-05-14

Applicant: BASF AG

Inventor： DAUCHER HANS DIPL ING DR ,  HESS KLAUS DIPL ING DR ,  STICKEL RICHARD DIPL ING ,  KROETZSCH PETER DIPL ING DR

IPC: B01F3/04 ,  B01F3/08 ,  B01F5/02 ,  C02F3/12

Abstract: Use of a jet nozzle, which consists of a liquid nozzle (1), a gas nozzle (5), and a momentum exchange tube (2), in which the mouth (7) of the gas nozzle (5) is arranged below the horizontal axis (6) of the liquid nozzle (1) and with respect to the momentum exchange tube (2) such that the gas exit face (7) is inclined at an angle of 0-60 DEG , preferably 5-20 DEG , to the common horizontal axis (6) of the liquid nozzle (1) and the momentum exchange tube (2), and the clear horizontal distance of the gas nozzle (5) from the liquid nozzle (1) is 0-8, preferably 0.5-3, diameters of the liquid nozzle (1), for the introduction of gases into liquids.