Upgrading naphtha with matched catalyst(s)
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United States of America Patent
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Feb 21, 1989
Grant Date -
N/A
app pub date -
Nov 25, 1986
filing date -
Nov 29, 1985
priority date (Note) -
Expired
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Abstract
A process for the upgrading of a hydrocarbon feedstock which includes providing a feedstock including C.sub.4 and higher hydrocarbons which include paraffins and cycloparaffinic hydrocarbons; contacting the feedstock with a conventional naphtha reforming catalyst at an elevated temperature and at a liquid hourly space velocity (LHSV) of greater than approximately 5, when the cycloparaffin content is approximately 10% by weight or greater; and contacting the feedstock with a metal-containing ZSM-5 type zeolite catalyst at an elevated temperature at approximately 0.5 to 2 LHSV when the initial cycloparaffin content is reduced to less than approximately 10% by weight, and solely with a metal-containing ZSM-5 type zeolite catalyst at an elevated temperature at approximately 0.2 to 2 LHSV when the initial cycloparaffin content is less than approximately 10% by weight.
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