公开(公告)号：BR9003060A

公开(公告)日：1991-08-27

申请号：BR9003060

申请日：1990-06-29

Applicant: HOECHST AG

Inventor： GIRRBACH ULRICH ,  GRIMM RICHARD ,  HAERTL EDGAR ,  MALOW EGON

IPC: B01D53/14 ,  B01D53/34 ,  B01D53/68 ,  B01D53/77

公开(公告)号：CA1300349C

公开(公告)日：1992-05-12

申请号：CA587189

申请日：1988-12-29

Applicant: HOECHST AG

Inventor： HOEROLDT ERNST ,  GRIMM RICHARD ,  RITTNER SIEGBERT ,  KUCKERTZ HERBERT ,  BILLMANN WILFRIED

IPC: B01D53/14 ,  B01D53/34 ,  B01D53/54 ,  B01D53/70 ,  B01D53/72 ,  B01D53/77 ,  C10G70/06

Abstract: 87/F 398 K : A process for the separation of undesired organic ingredients from waste gases which are formed in the preparation of aromatic intermediates which comprises washing the waste gases with a washing liquid comprising a) paraffinic hydrocarbons having from 10 to 20 carbon atoms or b) diisopropylnaphthalene or a mixture of isomers thereof having the sum formula C16H20, an average molecular weight in the range of from 210 to 215, a boiling range in the range of from 290 to 300.degree.C (according to DIN 51 761) and a flash point above 130.degree.C (according to DIN 51 758) at a temperature in the range of from 0 to 50.degree.C to remove the said undesired organic ingredients.