Aromatization process
AssigneeChevron Research Company
InventorStephen J. Miller
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Abstract
An improved aromatization process is disclosed for upgrading the octane of an aliphatic feedstream, increasing the hydrogen to methane mol ratio of the product and decreasing the C.sub.10 + aromatics production. In the process the feed is diluted with CO, CO.sub.2 or N.sub.2 at a mol ratio in the range of 1:1 to 1:20 of feed to diluent, and passed over a ZSM-5-type of aluminosilicate zeolite catalyst.
Claims9
A process for converting a feedstock selected from the group consisting of light straight run naphthas, coker gasolines, FCC gasolines, and pyrolysis gasolines to a product stream comprising aromatic hydrocarbons, hydrogen and methane comprising contacting said feedstock with an aromatization catalyst comprising a zinc HZSM-5 catalyst at a temperature in the range of 340.degree. C. to 815.degree. C. and a pressure in the range from 1 atmosphere to 35 atmospheres in the presence of a diluent essentially free of molecular oxygen, said diluent selected from the group consisting of CO.sub.2 and N.sub.2 at a mol ratio of feedstock to diluent ranging from 1:1 to 1:20.
A process for converting an aliphatic feedstock to a product stream comprising aromatic hydrocarbons, hydrogen, and methane comprising contacting said feedstock with an aromatization catalyst at a temperature in the range of 340.degree. C. to 815.degree. C. and a pressure in the range from 1 atmosphere to 35 atmospheres, in the presence of a diluent comprising CO.sub.2 at a mol ratio of feedstock to diluent ranging from 1:1 to 1:20.
Dependencies are inferred from the claim text.