Patent ID: 7276210

Claim:
An apparatus for stripping hydrocarbons from fluidized solid particles counter-currently with a gaseous stripping fluid, said apparatus being part of a separator vessel and comprising: a) an approximately vertical stripping chamber; b) several sets of segmented, parallel baffles arranged in rows on an axis; c) a fluid-distributing device for feeding a gaseous stripping fluid; and d) a grid to collect refractory and coke debris, said stripping chamber comprising a zone of downward circulation of the suspended particles counter-currently to said fluid, with the sets of segmented baffles being oriented so that rows of a level of segmented, parallel baffles are offset relative to rows of another level of segmented, parallel baffles on said axis, where the thickness and separation of said sets of baffles is so dimensioned as to reduce coalescence of the formed bubbles and optimize the hydrocarbons desorption from said fluidized solid particles, wherein said several sets of segmented, parallel baffles arranged in rows comprise a first set of baffles, each baffle within the first set having a first geometry, followed by a second set of baffles, each baffle within the second set having a second geometry, and wherein said first geometry and said second geometry are not the same.