Patent ID: 8057662

Claim:
A method of pyrolytic upgrading of hydrocarbons, comprising the steps of: (a) disposing heat carrier solids within a rotatable vessel comprising a reaction zone and a combustion zone, and rotating the vessel, thereby simultaneously tumbling the solids within the reaction zone and within the combustion zone, and thereby transporting the solids from the combustion zone to the reaction zone, and from the reaction zone to the combustion zone; (b) flash cracking of a hydrocarbon feedstock in a reaction zone, by contacting the feedstock with heat carrier solids having a temperature of at least about 650Â° C. to heat the feedstock and to produce vapour products and coke, with a coke:CCR ratio of about 1.0 or less; (c) transporting the heat carrier solids from the reaction zone to a combustion zone where the heat carrier solids are heated by combustion of accumulated coke; (d) transporting the heat carrier solids from the combustion zone to the reaction zone; (e) removing vapour products from the reaction zone through a pipe which passes through the combustion zone, and recovering the vapour products.