Patent ID: 8066868
Filing Date: 2011-11-29
Classification: C10G,Y02P

Abstract:
1. A process for catalytic cracking a heavy hydrocarbon feedstock and recovering select hydrocarbons including light olefins, the process comprising: contacting a heavy hydrocarbon feedstock with a hydrocarbon cracking catalyst in a fluidized reactor zone at effective conditions to produce light olefins to form a fluid catalytic cracker effluent stream comprising a range of hydrocarbons; separating the fluid catalytic cracker effluent stream in a separation system to form a first separation system stream comprising primarily C cooling at least a portion of the first separation system stream; then compressing at least a portion of the first separation system stream; then contacting at least a portion of the first separation system stream in an absorption system with an absorption solvent at effective conditions to absorb a significant portion of C separating at least a portion of the second absorption system stream to form at least a first process stream comprising at least a portion of the absorption solvent and at least one second process stream comprising a remaining portion of the second absorption system stream; and returning at least a portion of the first process stream to the absorption system as the absorption solvent.