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Commercial Octgainsm Unit Provides ‘Zero’ Sulfur Gasoline With Higher Octane From A Heavy Cracked Naphtha Feed

Dr. Girish K. Chitnis, Catalysts ExxonMobil Research and Engineering Co.

Format:
Electronic (digital download/no shipping)

Associate Member, International Member, Petrochemical Member, Refining Member - $0.00
Government, NonMember - $25.00

Description:

Refiners worldwide have been busy making provisions for meeting more stringent gasoline specifications aimed at reducing automobile emissions. Qatar Petroleum was in the position a few years ago to undertake a major refinery expansion and was able to choose which technologies to build into its refinery to meet anticipated needs -- it was not limited to revamping existing units. QP chose atmospheric residua fluid catalytic cracking (RFCC) to increase quantities of higher value gasoline products. Post-treatment of RFCC products won out over pre-treatment of the entire atmospheric residua in terms of economics and process flexibility. Fractionation of the cracked naphtha allowed the light cracked naphtha to be treated inexpensively by sweetening and the higher sulfur heavy cracked naphtha to be upgraded separately. QP chose ExxonMobil Research and Engineering Company’s (EMRE) OCTGAINSM process to hydrofinish the heavy cracked naphtha due to its unique ability to provide deep desulfurization and olefin reduction while preserving or increasing gasoline octane with only a small loss in gasoline yield. With the preliminary startup of the refinery addition during the summer of 2002, two months of operation were available for initial unit testing before the refinery residua and RFCC rates were up to design. This paper presents details of the commercial performance of the QP OCTGAIN unit during these initial operations when the flexibility of the octane recovery ability of the process could be demonstrated.

Product Details:

Product ID: AM-03-125
Publication Year: 2003