(19)
(11) EP 1 232 228 A1

(12)

(43) Date of publication:
21.08.2002 Bulletin 2002/34

(21) Application number: 00973696.8

(22) Date of filing: 20.10.2000
(51) International Patent Classification (IPC)7C10G 11/18, C10G 9/32, C10B 43/14
(86) International application number:
PCT/US0028/985
(87) International publication number:
WO 0103/6563 (25.05.2001 Gazette 2001/21)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 12.11.1999 US 438439
10.10.2000 US 685359

(71) Applicant: ExxonMobil Research and Engineering Company
Clinton Township,Annandale, NJ 08801-0900 (US)

(72) Inventors:
  • NAHAS, Nicholas, Charles
    Chatham, NJ 07928 (US)
  • DRAEMEL, Dean, Clise
    Kingwood, TX 77345 (US)
  • WALTER, Richard, Edwards
    Long Valley, NJ 07853 (US)
  • SISKIN, Michael
    Randolph, NJ 07869 (US)
  • PHILLIPS, Glen, E.
    Goldvein, VA 22720 (US)

(74) Representative: Troch, Geneviève et al
ExxonMobil Chemical Europe Inc.,P.O. Box 105
1830 Machelen
1830 Machelen (BE)

   


(54) MITIGATION OF COKE DEPOSITS IN REFINERY REACTOR UNITS