Patent ID: 6780308
Filing Date: 2004-08-24
Classification: C10G

Abstract:
A process for the stripping of entrained and/or adsorbed hydrocarbons from particulate material, said process comprising:contacting particles with a hydrocarbon stream; disengaging hydrocarbons from the particles after contact with said hydrocarbon stream to produce a stream of contacted particles containing hydrocarbons; passing the contacted particles downwardly over a plurality of sloped stripping baffles, each baffle having a top section proximate a top edge of said baffle and a bottom section proximate a bottom edge of said baffle, said top section and said bottom section being demarcated by an imaginary line extending laterally on said baffle and substantially parallel to one of said top edge, said bottom edge and an imaginary line bifurcating said baffle into equal areas, said top section and said bottom section of said baffle each including a plurality of openings; discharging a stripping fluid upwardly through said openings of said baffles, a volumetric flow rate of stripping fluid moving through the bottom section of said baffle being greater than a volumetric flow rate of stripping fluid moving through the top section of said baffle, and stripping hydrocarbons from the particulate material; recovering stripping fluid and stripped hydrocarbons from the stripping baffles; and recovering stripped particles from the stripping baffles.