Patent ID: 7807114

Claim:
An oxygenate to propylene reactor system comprising: a plurality of reactors connected in fluid flow communication and having at least one pair of reactors separated by an interstage position; a feed line for supplying a reactant feed stream comprising at least one oxygenated compound separately to an inlet of more than one of the plurality of reactors; and a diverter in fluid communication with the interstage position and capable of directing a first portion of a product stream comprising propylene exiting one reactor in said pair of reactors to a first location and a second portion of the product stream to an inlet of another reactor in said pair of reactors; wherein a first reactor of the plurality of reactors comprises a first annular catalyst chamber and a second reactor of the plurality of reactors comprises second annular catalyst chamber and the first annular catalyst chamber is concentrically disposed within the second annular catalyst chamber.