公开(公告)号：DE3060768D1

公开(公告)日：1982-10-14

申请号：DE3060768

申请日：1980-12-30

Applicant: BASF AG

Inventor： RICHTER KONRAD DR ,  GOETZE WALTER DR ,  MUEHLPFORDT WERNER DR ,  REICHEL FRITZ DR

IPC: B01J27/02 ,  C01C3/14 ,  C02F1/72

公开(公告)号：DE2131403A1

公开(公告)日：1972-12-28

申请号：DE2131403

申请日：1971-06-24

Applicant: BASF AG

Inventor： OPP KARL DR ,  JANSON ALFONS DR ,  MUEHLPFORDT WERNER DR ,  HECK WOLFGANG DR ,  SCHULZE GERHARD DR

IPC: B01D53/68 ,  B01D53/70 ,  B01D53/14

Abstract: One-stage process results in complete removal of Cl2, COCl2 and HCl from effluent gases produced during the mfr. of Al by reaction of alumina or bauxite with Cl2 in the presence of CO or C. The purification is carried out using a 0.1-30 wt.% FeCl2 soln. having a pH between -0.7 and +1.5 pref. 0-1.0. between room temp. and the boiling point. The spent FeCl2 soln. is pref. regenerated with iron scrap and recycled.