Patent ID: 7199278
Filing Date: 2007-04-03
Classification: C10G,Y02P

Abstract:
1. A process for converting an oxygenate-containing feedstock into one or more olefins, the process comprising: (a) passing the feedstock through a reaction zone; (b) passing a particulate catalyst composition in a moving bed through the reaction zone in a direction countercurrent to the feedstock, wherein the catalyst composition comprises a molecular sieve physically mixed with at least one metal oxide in a substantially dry, dried, or calcined state and having an uptake of carbon dioxide at 100° C. of at least 0.03 mg/m (c) contacting the feedstock and the catalyst composition in the reaction zone under countercurrent flow conditions sufficient to convert at least part of the feedstock into one or more olefins and generate coke on the catalyst composition; (d) contacting the coked catalyst composition with a regeneration, medium in a regeneration zone under conditions to remove at least part of the coke from the catalyst composition; and (e) recycling the regenerated catalyst composition to the reaction zone.