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Low severity delayed coking

  • US 4,519,898 A
  • Filed: 05/20/1983
  • Issued: 05/28/1985
  • Est. Priority Date: 05/20/1983
  • Status: Expired due to Fees
First Claim
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1. In a delayed coking process which comprises the steps of:

  • (a) preheating a hydrocarbonaceous oil feed to a coking temperature, and(b) introducing the resulting preheated oil into a coking drum operated at delayed coking conditions to form coke and a vapor phase product,the improvement which comprises;

    said oil feed being preheated to a temperature ranging from about 775°

    to 920°

    F., and introducing a gas into said coking drum during step (b), in an amount ranging from about 10 to about 20 weight percent of said preheated oil to maintain the content of volatile matter of said coke in the range of about 5 to about 15 weight percent.

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