Patent ID: 7682576
Filing Date: 2010-03-23
Classification: C10G

Abstract:
1. An apparatus for processing streams from a fluid catalytic cracking unit comprising: a fluid catalytic cracking reactor for contacting cracking catalyst with a hydrocarbon feed stream to crack the hydrocarbons to gaseous product hydrocarbons having lower molecular weight and deposit coke on the catalyst to provide coked catalyst; a product outlet for discharging said gaseous product hydrocarbons from said reactor; a regenerator for combusting coke from said coked catalyst by contact with oxygen; a flue gas outlet for discharging flue gas from said regenerator; a product recovery section in downstream communication with said product outlet, said product recovery section for separating said gaseous products into a plurality of product streams including a selected product stream; a power recovery section in downstream communication with said flue gas outlet; said power recovery section in downstream communication with said product recovery section; a selected product line communicating said product recovery section with a downstream flue gas heater in which the selected product gas is combusted with oxygen and a combust line communicating said flue gas heater with said flue gas line.