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U.S. Department of Energy
Office of Scientific and Technical Information

Add MTBE unit ahead of alkylation

Journal Article · · Hydrocarbon Process.; (United States)
OSTI ID:6435454
Approximately three years ago, the people at Diamond Shamrock's Sunray, Texas, refinery recognized a growing demand for high octane super premium unleaded gasoline in their regional marketing area. It was apparent that they would need to change their processing scheme to meet this growing demand. After investigating several options, they decided to install an MTBE (methyl tert-butyl ether) unit upstream of their existing sulfuric acid (H/sub 2/SO/sub 4/) aklylation unit. The new unit would process olefin feed before it entered the alkylation unit. The MTBE unit was expected to improve Diamond Shamrock's gasoline pool in two ways. First, the MTBE would be an additional high octane blending stock for the gasoline pool. Second, the MTBE unit would improve the quality of the olefin stream going to the alkylation unit. Diamond Shamrock brought their MTBE unit onstream in December, 1985. The results of the combined operation exceeded expectations, producing alkylate in excess of 98 RON (Research octane number) and MTBE of 118 RON. These components significantly upgraded the refinery's capability to produce a super premium unleaded gasoline.
Research Organization:
Stratco, Inc., Kansas City, MO (US)
OSTI ID:
6435454
Journal Information:
Hydrocarbon Process.; (United States), Journal Name: Hydrocarbon Process.; (United States) Vol. 67:8; ISSN HYPRA
Country of Publication:
United States
Language:
English