Side-to-side fcc stripping apparatus with baffle-skirts...

Details Side-to-side fcc stripping apparatus with baffle-skirts... Side-to-side fcc stripping apparatus with baffle-skirts...

C - Chemistry, Metallurgy

10

G

196/154

C10G 11/18 (2006.01) B01D 49/00 (2006.01)

Patent

CA 2016727

"SIDE-TO-SIDE FCC STRIPPING APPARATUS WITH BAFFLE-SKIRTS HAVING STRIPPING GAS INJECTION PORTS" ABSTRACT An apparatus for stripping occluded hydrocarbons from spent FCC catalyst which has been used in effecting hydrocarbon conversion reactions prior to the regeneration of this catalyst by combustion of carbon deposits upon the catalyst is improved in order to better distribute countercurrently flowing stripping gas, which is normally steam, so that the gas contacts and passes through substantially all of the catalyst by adding gas injection ports to the skirts of the stripper baffles which direct catalyst flow in a generally side-to-side manner as it moves downward through a stripping vessel. The ports are sized to vary penetration of the stripping gas into the stream catalyst that moves past the grids. Use of these ports increases the amount of occluded hydrocarbons removed from the spent catalyst and/or decreases stripping gas requirements.

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