Patent ID: 8178060
Filing Date: 2012-05-15
Classification: B01D,C07C,C10G

Abstract:
1. A system for converting oxygenates to light olefins, said system comprising: an oxygenate conversion reactor for contacting an oxygenate-containing feedstream with an oxygenate conversion catalyst and converting the oxygenate-containing feedstream to an oxygenate conversion product stream comprising fuel gas hydrocarbons, light olefins, and C a gas processing system effective to separate at least a portion of the oxygenate conversion product stream and form a material feedstream comprising olefins; a dividing wall fractionation column for fractionating the material feedstream comprising the C an olefin cracking reactor for contacting at least a portion of the third hydrocarbon stream with olefin cracking catalyst and converting C wherein the third hydrocarbon fraction process stream is the fractionated portion of the C 4+ hydrocarbon stream contacted in the olefin cracking reactor.