C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 1/20 (2006.01)
Patent
CA 2398387
A process for producing olefins from oxygenate, e.g., methanol or dimethylether, includes a fluidized bed reaction zone that provide contact between the oxygenate and a molecular sieve catalyst such as ZSM-34 or SAPO- 34. Improved ethylene selectivity is realized when the oxygenate is stagewise injected into the fluidized bed at one or more locations along the axial direction of the fluidized bed reaction zone.
L'invention concerne un procédé d'obtention d'oléfines à partir d'oxygénate, notamment de méthanol ou diméthyléther, faisant intervenir une zone de réaction de lit fluidisé assurant le contact enter l'oxygénate et un catalyseur à tamis moléculaire tel que ZSM-34 ou SAPO-34. La sélectivité éthylénique est améliorée grâce à l'injection à étage de l'oxygénate dans le lit fluidisé à un ou plusieurs emplacements le long de la direction axiale de la zone de réaction du lit fluidisé.
Borden Ladner Gervais Llp
Exxonmobil Chemical Patents Inc.
LandOfFree
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