Regeneration of cracking catalyst

Details Regeneration of cracking catalyst Regeneration of cracking catalyst

B - Operations, Transporting

01

J

252/1.E

B01J 37/14 (2006.01) B01J 8/24 (2006.01) B01J 8/26 (2006.01) C10G 11/18 (2006.01)

Patent

CA 1046483

REGENERATION OF CRACKING CATALYST (D#73,215-C2-F) ABSTRACT A process for the regeneration of coke- contaminated fluidizable catalytic cracking catalyst wherein the regeneration flue gas having a reduced concentration of carbon monoxide and regenerated catalyst having a reduced residual carbon content are obtained. By this method a fluidized dense catalyst phase of coke- contaminated catalyst is regenerated with an excess amount of oxygen-containing regeneration gas at an elevated temperature such that there is a controlled afterburn of carbon monoxide to carbon dioxide in the dilute catalyst phase whereby a flue gas having a carbon monoxide content of from 0 to 500 ppm is obtained. The residence time of catalyst in the fluidized dense catalyst phase is adjusted to provide a low level of residual carbon-on-regenerated- catalyst. -/I/-

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