(19)
(11) EP 0 250 136 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.03.1989 Bulletin 1989/11

(43) Date of publication A2:
23.12.1987 Bulletin 1987/52

(21) Application number: 87305009.0

(22) Date of filing: 05.06.1987
(51) International Patent Classification (IPC)4C10G 9/00
(84) Designated Contracting States:
DE ES FR GB IT

(30) Priority: 09.06.1986 US 871946

(71) Applicant: FOSTER WHEELER USA CORPORATION
Livingston New Jersey 07039 (US)

(72) Inventors:
  • McGrath, Michael John
    Andover Sussex New Jersey (US)
  • Godino, Rino Lodivico
    Livingston New Jersey (US)

(74) Representative: Bowman, Paul Alan et al
LLOYD WISE, TREGEAR & CO., Commonwealth House, 1-19 New Oxford Street
London WC1A 1LW
London WC1A 1LW (GB)


(56) References cited: : 
   
     
    Remarks:
    A request for correction of the description has been filed pursuant to Rule 88 EPC. A decision on the request will be taken during the proceedings before the Examining Division (Guidelines for Examination in the EPO, A-V, 2.2).
     


    (54) Delayed coking


    (57) A process for reducing the amount of coke formed in the coke drums of a delayed coking process by reducing the partial pressure of the heavy oil in the coke drums.





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