Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product
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United States of America Patent
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Apr 10, 2007
Grant Date -
Apr 8, 2004
app pub date -
Aug 29, 2003
filing date -
Oct 8, 2002
priority date (Note) -
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Abstract
Fischer-Tropsch hydrocarbon synthesis using a cobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided 10-ring, 1-dimensional zeolite catalyst that has been reduced and then treated by contacting it with the synthesized hydrocarbons containing one or more oxygenates, including indigenous oxygenate. Tail gas from the hydrodewaxing reactor can be used for the hydrocarbon synthesis.
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