Petroleum coker cooling method with minimum coke drum stress

Details Petroleum coker cooling method with minimum coke drum stress Petroleum coker cooling method with minimum coke drum stress

1997-09-29

1999-08-03

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

208 48R, 208 50, 208131, 585240, 201 39, C10G 912

Patent

active

059320893

ABSTRACT:
A method is provided for cooling prior to decoking a petroleum coke drum having a substantially solidified mass of petroleum coke by initiating the injection of water into the coke drum while the average temperature of the coke within the coke drum is greater than about 500.degree. F., wherein the average flow rate of water injected into the coke drum over the initial 10 minute period of water injection is from about 0.0033 to about 0.01 gpm per cubic foot of coke in the coke drum; and thereafter continuing the injection of water into the drum for a total injection time of at least about 60 minutes, at a flow rate during the 50 minute period immediately following the initial 10 minute period less than about 0.0036 to about 0.011 gpm per cubic foot of coke in the coke drum.

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"Experience With Vessels of Delayed-Coking Units" by N.A. Weil and F.S. Rapasky, presented at the 23rd Midyear Meeting of the American Petroleum Institute's Division of Refining, Los Angeles, California, May 13, 1958, vol. 38 (III), pp. 214-232.

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