Two-stage process for upgrading naphtha
AssigneeMobil Oil Corporation
InventorsTsoung Y. Yan, Tracy J. Huang, Werner O. Haag
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Abstract
Naphthas are upgraded in a two-stage process to give improved yields of high octane gasoline. The first stage operates at low temperatures of 100.degree.-300.degree. F using a highly active chlorinated alumina containing a metal of the platinum group, while the second stage operates at high temperatures using a reforming catalyst.
Claims10
A process for upgrading a naphtha feed stock comprising the stages of (1) reforming said feed stock at from about 100.degree. F. to about 300.degree. F. by contacting said feed stock with an alumina catalyst containing a platinum group metal selected from Group VIII of the Periodic Table and also containing from about 5% to about 15% by weight of halogen and (2) subjecting the effluent to a further reforming stage employing a platinum-containing alumina catalyst having therein less than about 1% by weight of chlorine, at a temperature of from about 850.degree. F. to about 1000.degree. F., at a pressure of from about 50 to about 1000 psig and at an LHSV of from about 0.5 to about 10.
Dependencies are inferred from the claim text.