Conversion of oxygenate to olefins with staged injection of oxygenate
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United States of America Patent
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Jun 19, 2007
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N/A
app pub date -
Feb 22, 2000
filing date -
Feb 22, 2000
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Abstract
A system and 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.
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