Low sulfur coke using dispersed calcium

Details Low sulfur coke using dispersed calcium Low sulfur coke using dispersed calcium

1984-03-20

1987-04-28

Doll, John

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208131, 201 17, 44 1SR, C10G 932, C10G 914

Patent

active

046612408

ABSTRACT:
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, calcium hydroxide or calcium oxide, in particulate form, to the heavy crude oil prior to coking, and uniformly dispersing the same therein. The presence of the calcium compound leads to an increased yield of liquid distillates from the coking process under the coking conditions. For calcium carbonate, the Ca:S ratio is about 1:5 to 1:1 and the coking temperature is about 400.degree. to 500.degree. C. For calcium hydroxide and calcium oxide, the Ca:S ratio is about 1:3 to 1:1 and the coking temperature is about 450.degree. to about 500.degree. C.

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