Fluid
Catalytic
Cracker
Sulzer
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Catalytic Splitter
The modern FCC units are all continuous processes which operate 24 hours a day for as long as 3 to 5 years between scheduled shutdowns for routine maintenance. Several proprietary designs have been developed for modern FCC units. There are two configurations for an FCC unit: the "stacked" type where the reactor and the catalyst regenerator are contained in two separate vessels, with the reactor above the regenerator, with a skirt between these vessels allowing t.