Formation of coke from heavy crude oils in the presence of...

Details Formation of coke from heavy crude oils in the presence of... Formation of coke from heavy crude oils in the presence of...

C - Chemistry, Metallurgy

10

B

53/141, 53/296,

C10B 55/00 (2006.01) C10G 9/00 (2006.01) C10L 10/00 (2006.01) C22B 7/00 (2006.01) C22B 23/00 (2006.01) C22B 34/22 (2006.01)

Patent

CA 1156952

ABSTRACT OF THE DISCLOSURE The sulphur emissive capability, on combustion, of coke which is formed during upgrading of sulphur-containing heavy crude oils, including oil sands bitumen, and residua, is decreased by the addition of calcium carbonate, preferably in the form of limestone, to the heavy crude oil prior to coking. The presence of the limestone leads to an increased yield of liquid distillates from the coking process under preferred coking conditions. Ash remaining after combustion of the coke may be leached to recover nickel and vanadium values therefrom.

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