HEAT BALANCED FCC FOR LIGHT HYDROCARBON FEEDS

摘要

Systems and methods for processing hydrocarbons are provided. A first hydrocarbon feed containing one or more C4 to C20 hydrocarbons having a research octane number of less than 88 can be cracked at a first temperature and in the presence of one or more catalysts to provide a first cracked mixture. A second hydrocarbon feed can be introduced to the first mixture to provide a second mixture. The second mixture can be cracked at the first temperature to provide a second cracked mixture containing propylene and one or more hydrocarbons having a research octane number of about 88 to about 95, and one or more coked catalysts.