Alkanol to alkylene conversion using at least two different catalysts in sequential order
AssigneeDow Global Technologies LLC
InventorsDerrick W. Flick, Mark W. Stewart
Life of this patent
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Abstract
Effect adiabatic, catalytic alkanol (alcohol) dehydration using two or more sequential dehydration catalyst beds each of which has disposed therein a different catalyst and, preferably, eliminating heating and heating apparatus disposed between each sequential pair of dehydration catalyst beds.
Claims9
An adiabatic process for catalytically converting an alcohol contained in an alcohol feedstream to its corresponding olefin, which process comprises feeding the alcohol feedstream to a first dehydration catalyst bed in a series of two or more sequential dehydration catalyst beds under a first set of dehydration conditions to yield a partially dehydrated alcohol feedstream with a first olefin content and then feeding the partially dehydrated alcohol feedstream to a second sequential dehydration catalyst bed under a second set of dehydration conditions to yield a dehydrated alcohol feedstream with a second olefin content, the second olefin content being greater than the first olefin content, the first and second catalyst beds in each pairing of first and second catalyst beds comprising different catalysts and the first and second sets of dehydration conditions differing from one another by at least temperature with the first set of dehydration conditions comprising a temperature higher than the temperature of the second set of dehydration conditions.
Dependencies are inferred from the claim text.