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Octane destruction in FCC gasoline posttreaters

George Hoekstra Facilitator: George Hoekstra – Hoekstra Trading LLC


Octane destruction in FCC gasoline posttreaters

Many North American refineries have started increasing severity on gasoline posttreaters to make Tier 3 ultra-low sulfur gasoline. Our 3-year program of pilot plant and commercial field tests has shown that, when posttreater severity is increased, octane destruction will increase by much more than has been expected by the industry. Field tests on twelve different commercial posttreaters show clearly that the observed octane destruction is typically 5 times higher than is being expected. In this presentation, we will present data from commercial field tests during which our clients increased reactor temperatures to reduce sulfur to levels required for Tier 3 gasoline.


Part 1

Part 2

Part 3

George Hoekstra retired from BP in 2009 after 35 years in refinery process research and technology management. Since then he has offered consulting services to independent refiners in the field of hydroprocessing catalysts, including the refining industry’s only multi-client, open market catalyst testing program.

George has also been an options investor for 30 years and is a contributing author to Futures and Options Trader and Active Trader Magazine. His options investing articles focus on:

  • Analyzing price volatility
  • Finding bargains in the options markets
  • How to start your own options investing program

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Posted by: Evan Hyde

Evan Hyde is the director of field services for He previously was president of C2 Nano Technology where they researched surface treatments to combat fouling & corrosion issues in cokers & other petrochemical process units. He was a Senior Engineering Advisor for Becht Engineering Co., Inc. and has consulted on processing improvement and reliability initiatives for coking clients around the world. Prior to joining Becht, Evan worked for ExxonMobil Research and Engineering, as a process engineer, with assignments in research, and troubleshooting for heavy oil upgrading equipment. He holds a B.S. of Chemical Engineering from Pennsylvania State University.

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