(19)
(11) EP 1 246 890 A1

(12)

(43) Date of publication:
09.10.2002 Bulletin 2002/41

(21) Application number: 00977195.7

(22) Date of filing: 13.11.2000
(51) International Patent Classification (IPC)7C10G 45/04
(86) International application number:
PCT/US0031/131
(87) International publication number:
WO 0104/4408 (21.06.2001 Gazette 2001/25)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 16.12.1999 US 465122

(71) Applicant: CHEVRON U.S.A. INC.
San Ramon, CA 94583-4289 (US)

(72) Inventors:
  • LEUNG, Pak, C.
    Lafayette, CA 94549 (US)
  • EARLS, David, E.
    Pinole, CA 94564 (US)
  • REYNOLDS, Bruce
    Martinez, CA 94553 (US)
  • JOHNSON, David, R.
    Petaluma, CA 94954 (US)
  • BACHTEL, Robert
    El Cerrito, CA 94530 (US)
  • TRIMBLE, Harold, J.
    Panama City, FL 32411 (US)

(74) Representative: Nash, David Allan et al
Haseltine Lake & Co.,Imperial House, 15-19 Kingsway
London WC2B 6UD
London WC2B 6UD (GB)

   


(54) PRESULFIDING HYDROPROCESSING CATALYST REPLACEMENT BATCHES