C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/163, 141/17,
C10G 9/00 (2006.01) C10G 9/04 (2006.01)
Patent
CA 1164387
ABSTRACT OF DISCLOSURE A method and apparatus for cracking heavy hydrocarbons for example petroleum oil or coal tar. The reactor comprises an outer spherical pressure vessel and an inner vessel within the outer vessel. The inner vessel has an open bottom end. The cracking reaction takes place in the inner vessel and the pro- ducts leave through the open bottom end. me reaction is inhibited in the outer vessel since the contents are maintained at a temperature insufficient to sustain the cracking reaction. The product is withdrawn, either continuously or inter- mittently via an outlet. The coke produced may be fluidised in the outer vessel or may he allowed to settle. The inner vessel may be rotated slowly about its vertical axis and high pressure fluid jets directed at its surface to dislodge coke deposited on the inside and outside wall. The reactor may be used in a system for the simultaneous distillation and thermal cracking of crude oil. Feed- stock is fed to a flash-settler having three sections. Liquid is withdrawn from the first section and fed to a reactor via a heater. The reaction products are quenched to inhibit cracking by means of a cooling stream prior to their intro- duction to the third section of the flash-settler. Coke is removed from the third section as a slurry. Gases flashed off from the feedstock and from the reaction products are fed to a distillation column where they are separated. Liquid from the second section is either removed as product, allowed to overflow into the first section to be recycled, or fed to a reduced pressure column in which heavy gas oil may be removed as a product. The top product is fed to the distillation column, the bottom product is recycled to the reactor via the heater.
387758
Fetherstonhaugh & Co.
Spencer Peter
LandOfFree
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