Low severity delayed coking
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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Abstract
A delayed coking process is conducted at a relatively low temperature with the introduction of a gas into the coking drum to strip volatile matter from the coke product and to form coke containing 6 to 12 weight percent volatile matter. Low temperature delayed coking decreases the amount of coke yield, calculated on a volatile-free basis, and increases liquid yield.
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Citations
8 Claims
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1. In a delayed coking process which comprises the steps of:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification