November 2001

Special Report: Refining Developments

Control refinery NOx emissions cost-effectively

Refiner uses new ultra low-NOx burner technology to control emission levels from major sources

Seebold, J. G., Chevron Corp.; Waibel, R. T., Webster, T. L., John Zink Co. LLC

        Fig. 1. Original burners firing in No. 4 crude unit. The California Clean Air Act limits ozone-causing emissions [nitrogen oxides (NOx) and volatile organic compounds (VOCs)] from existing furnaces and boilers and requires refinery owners to implement best available control technology (BACT). One refinery located in the San Francisco Bay area needed to reduce its daily average NOx emissions to less than 0.033-lb NOx/MMBtu fuel burned, equivalent to about 27-ppm NOx, corrected to 3% O2.

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