October 2020

Process Control, Instrumentation and Automation

Reduce gasoline blending giveaway with inline blending and online analyzers

With best available technology, how much practical reduction in giveaway can be achieved, with the caveat that there is no such thing as “zero error” in value measurements? Also, can those numbers change if inline blending is used? This article seeks to answer both questions.

Curcio, E., Barsamian, A., Refinery Automation Institute, LLC

A survey by Valero of U.S. refineries1 indicates a range of giveaway performance for gasoline blending: Octane giveaway (AKI octane): U.S. average = 0.5 ON; min = 0.1 ON; max = 1.2 ON RVP giveaway (psi): U.S. average = 0.3 psi; min = 0.1 psi; max = 0.6 psi. With best available technology, how much practical reduction in giveaway can be achieved, with the caveat that there is no such thing as “zero error” in value measurements? Also, can those numbers change if inline blending is used? This article seeks to answer both questions. Inline blending vs. sequential blending Most refineries in the U.S. and Latin America do not use inline blending technology. Consequently, they are still bl

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