公开(公告)号：DE2437787A1

公开(公告)日：1976-02-26

申请号：DE2437787

申请日：1974-08-06

Applicant: BASF AG

Inventor： HOVEMANN FRIEDRICH DIPL CHEM D ,  LADENBERGER VOLKER DIPL CHEM D ,  BRONSTERT KLAUS DIPL CHEM DR

IPC: C08F8/04 ,  C10M143/12 ,  C10N30/00 ,  C10N30/02 ,  C10N40/04 ,  C10N40/25 ,  C10N60/02 ,  C10M1/18

公开(公告)号：DE2358764A1

公开(公告)日：1975-06-05

申请号：DE2358764

申请日：1973-11-26

Applicant: BASF AG

Inventor： HOVEMANN FRIEDRICH DIPL CHEM D ,  LADENBERGER VOLKER DIPL CHEM D ,  RIPPERGER WILLI DIPL CHEM DR ,  BRONSTERT KLAUS DIPL CHEM DR

IPC: C10M143/12 ,  C10N30/00 ,  C10N30/02 ,  C10N60/02 ,  C10M1/18

公开(公告)号：DE3100899A1

公开(公告)日：1982-08-05

申请号：DE3100899

申请日：1981-01-14

Applicant: BASF AG

Inventor： SANDER BRUNO DIPL CHEM DR ,  HOVEMANN FRIEDRICH DIPL CHEM D ,  SCHERLING KURT

IPC: B01D17/00 ,  B01D37/00 ,  C02F11/12 ,  C02F11/14 ,  C10G33/00 ,  C10G33/04

Abstract: A process for dewatering petroleum-containing sludges by a two-stage method using finely divided additives and organic flocculants, wherein (a) finely divided additives, such as ash, coal, sand or mixtures of these, in a free-flowing form or as an aqueous suspension, are homogeneously dispersed in the petroleum-containing sludge, in an amount such that the total solids content of the resulting mixture is from 10 to 30% by weight, especially from 12 to 20% by weight, (b) this sludge mixture is treated with an aqueous solution of an organic flocculant, preferably of anionic nature, (c) the greater part of the sludge water is removed by gravity filtration, (d) the pre-dewatered sludge mixture is treated with an aqueous solution of aluminum salts or trivalent iron salts and (e) this mixture is substantially dewatered by pressure filtration, in the course of which the greater part of the petroleum present is also removed.

公开(公告)号：DE2904314A1

公开(公告)日：1980-08-14

申请号：DE2904314

申请日：1979-02-05

Applicant: BASF AG

Inventor： BOERZEL PAUL DIPL CHEM DR ,  BRONSTERT KLAUS DIPL CHEM DR ,  HOVEMANN FRIEDRICH DIPL CHEM D ,  SANDROCK GERHARD DIPL CHEM DR ,  STROHMEYER MAX DIPL CHEM DR

IPC: C10M159/12 ,  C08F4/00 ,  C08F4/06 ,  C08F8/00 ,  C08F8/32 ,  C08F8/46 ,  C08F10/10 ,  C08F240/00 ,  C08F110/10

公开(公告)号：DE2503541A1

公开(公告)日：1976-08-19

申请号：DE2503541

申请日：1975-01-29

Applicant: BASF AG

Inventor： HOVEMANN FRIEDRICH DIPL CHEM D ,  MUELLER HERBERT DIPL CHEM DR

IPC: C10M20060101 ,  C10M169/00 ,  C10M1/18 ,  C10M1/20 ,  C10M1/34