Patent ID: 9238209
Filing Date: 2016-01-19
CPC Classification: B01J,C10G

Claim Text:
1. A fluid catalytic cracking process comprising: passing catalyst and inert gas upwardly in a riser having a wall and an inner diameter defined by said wall of at least 1.3 meters; injecting a hydrocarbon feedstock into said riser from at least two distributors penetrating said wall of said riser and having respective tips with at least one opening in each of said tips, said respective tips of said at least two distributors positioned at the same elevation within a margin of 0.1 inner diameters of said riser at the elevation of the feed distributors but positioned at different radial distances from said wall in said riser, said at least two distributors including an inner distributor and an outer distributor and of the total hydrocarbon feedstock injected from the inner distributor and the outer distributor, at least 8 and less than 50 wt-% is injected from the inner distributor; cracking said hydrocarbon feedstock in the presence of said catalyst to produce a cracked stream; and separating said catalyst from said cracked stream.