Process for the production of middle distillates by hydroisomerisation and hydrocracking feeds from the Fischer-Tropsch process
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United States of America Patent
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Jul 29, 2008
Grant Date -
Mar 27, 2003
app pub date -
Jul 8, 2002
filing date -
Jul 6, 2001
priority date (Note) -
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Abstract
The invention concerns a process and apparatus wherein the paraffin effluent from the Fischer-Tropsch process is separated into a heavy fraction with an initial boiling point of 120-200.degree. C., said heavy fraction then optionally being hydrotreated then brought into contact with an amorphous hydroisomerization/hydrocracking catalyst that converts at least 80% by weight of the 370.degree. C.+ products into products with a boiling point of less than 370.degree. C. After distilling the hydrocracked fraction obtained to separate middle distillates, the residual heavy fraction is recycled.
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