Pitch demetalization by destruction distillation

Details Pitch demetalization by destruction distillation Pitch demetalization by destruction distillation

C - Chemistry, Metallurgy

10

C

196/35, 196/72

C10C 3/06 (2006.01) C10G 9/00 (2006.01) C10G 69/06 (2006.01)

Patent

CA 1203190

ABSTRACT OF THE DISCLOSURE Pitch (the faction boiling above 524°C) of low metals content is produced by delayed coking of a heavy hydrocarbon oil with a high metals content. In a first delayed coking step, the gaseous and liquid phase is removed and sent to a fractionation unit. The bottoms from the fractionation unit are (a) subjected to a second delayed coking to produce coke which meets electrode grade specifications for metals, or (b) catalytically hydrocracked for conversion of distillate products. The demetalized pitch produced in the first delayed coking operation is also a valuable product for use as a binder in the production of coke for electro-metallurigical applications.

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