(19)

(11)

EP 0 523 038 A1

(12)

(43) Date of publication: 20.01.1993 Bulletin 1993/03 (21) Application number: 90907969.0 (22) Date of filing: 02.04.1990

(51) International Patent Classification (IPC):  A62D 3/ 34( . ) A62D 101/ 22( . ) C10G 29/ 12( . ) (86) International application number: PCT/US1990/001846 (87) International publication number: WO 1991/015558 (17.10.1991 Gazette 1991/24)

(84) Designated Contracting States: AT BE DE DK FR GB IT LU NL SE (71) Applicant: ADVANCED REFINERY TECHNOLOGY Klamath Falls, OR 97601 (US)	(72) Inventor: WILWERDING, Carl, M. Klamath Falls, OR 97601 (US) (74) Representative: Dipl.-Phys.Dr. Manitz Dipl.-Ing. Finsterwald Dipl.-Ing. Grämkow Dipl.-Chem.Dr. Heyn Dipl.-Phys. Rotermund Morgan, B.Sc.(Phys)  Postfach 22 16 11 D-80506 München D-80506 München (DE)