Separation of flue gas from regenerated catalyst.

摘要

A stripper arrangement is provided in a regenerated catalyst standpipe for removing or displacing combustion flue gas products with fuel gas products of hydrocarbon conversion freed of hydrogen sulfide.

A catalyst containing the flue gas passes downward through the first annular section (4) which is provided with downward sloping stator blades (6), imposing a horizontal circulating moment on the catalyst stream, thus separating the flue gas from the catalyst by centrifugal force. Fuel gas is introduced tangentially (14) in contact with the annular flowing catalyst stream, displacing CO2 from the catalyst and being withdrawn through the central tube (8), which is open at its bottom end and closed at its upper end, through the hollow baffles (6) and a second annular zone (10).