(19)
(11) EP 0 711 331 A1

(12)

(43) Date of publication:
15.05.1996 Bulletin 1996/20

(21) Application number: 95917740.0

(22) Date of filing: 27.04.1995
(51) International Patent Classification (IPC): 
C10G 35/ 14( . )
B01J 8/ 12( . )
B01J 23/ 74( . )
 B01J 8/ 00( . )
B01J 23/ 16( . )
C10G 49/ 00( . )
(86) International application number:
PCT/US1995/005280
(87) International publication number:
WO 1995/029970 (09.11.1995 Gazette 1995/48)
(84) Designated Contracting States:
GB IT

(30) Priority: 29.04.1994 US 19940235043
29.04.1994 US 19940235777
11.07.1994 US 19940273526
21.11.1994 US 19940342527

(71) Applicant: CHEVRON U.S.A. INC.
San Francisco, California 94120-7141 (US)

(72) Inventors:
  • BACHTEL, Robert, W.
    El Cerrito, CA 94530 (US)
  • DARSOW, Brian, A.
    St. Lewis Park, MN 55426 (US)
  • EARLS, David, E.
    Pinole, CA 94564 (US)
  • JOHNSON, David, R.
    Petaluma, CA 94954 (US)
  • KLETT, Robert, J.
    San Francisco, CA 94123-1602 (US)
  • KRAMER, David, C.
    San Anselmo, CA 94960 (US)
  • REYNOLDS, Bruce, E.
    Martinez, CA 94553 (US)
  • SCHEUERMAN, Georgianna, L.
    Moraga, CA 94556 (US)
  • TRIMBLE, Harold, J.
    Novato, CA 94945 (US)
  • BROSSARD, David, N.
    Oakland, CA 94610 (US)

(74) Representative: Nash, David Allan 
Haseltine Lake & Co. Hazlitt House 28 Southampton Buildings Chancery Lane
London WC2A 1AT
London WC2A 1AT (GB)

   


(54) CATALYST, METHOD AND APPARATUS FOR A PARTICLE REPLACEMENT SYSTEM FOR COUNTERCURRENT FEED-PACKED BED CONTACT