Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1980-09-15
1984-03-06
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208159, 208164, 502 52, C10G 1118, B01J 3714
Patent
active
044352816
ABSTRACT:
Emissions of sulfur oxides from the regenerator of a catalytic cracking unit are reduced by selectively removing a portion of the sulfur from sulfur-containing coke deposits on deactivated cracking catalyst. This is accomplished by reaction of these deposits with limited amounts of molecular oxygen in a stripping zone at a temperature in the range from about 550.degree. to about 700.degree. C. Hot regenerated catalyst and/or hot effluent gas from the catalyst regeneration zone is passed to the stripping zone in an amount which is effective to maintain the temperature in said stripping zone within the range from about 550.degree. to about 700.degree. C.
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Chaudhuri O.
Gantz Delbert E.
Kretchmer Richard A.
Magidson William H.
McClain William T.
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