(19)

(11)

EP 0 067 180 A1

(12)

(43) Date of publication: 22.12.1982 Bulletin 1982/51 (21) Application number: 82900052.0 (22) Date of filing: 16.12.1981

(51) International Patent Classification (IPC):  B01D 1/ 06( . ) C01B 17/ 88( . ) B01D 1/ 22( . ) (86) International application number: PCT/SE1981/000375 (87) International publication number: WO 1982/002039 (24.06.1982 Gazette 1982/16)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 17.12.1980 SE 19800008860 (71) Applicant: TROENG, John S-222 36 Lund (SE)	(72) Inventor: TROENG, John S-222 36 Lund (SE)