Lean burn, natural gas, reciprocating engines are becoming widely utilized for stationary industrial applications due to their high efficiency and low emissions. However, despite the low engine emissions, some locations still require exhaust after-treatment to meet the local emissions requirements. Due to the high oxygen content (greater than 4%) in the exhaust of lean burn engines, 3-Way (non-selective) catalysts are not suitable to reduce NOx. Selective catalytic reduction (SCR), which utilizes a consumable reductant to reduce NOx over a catalyst, is very effective at reducing NOx and is becoming an accepted technology for large, stationary engine applications. In the summer of 2001, Stewart & Stevenson installed 16 Deutz TGB632V16 natural gas fired engines for NEO Corporation at the Chow II power plant. MIRATECH SCR provided and commissioned 16 selective catalytic reduction systems for these engines using a 40% urea solution as the reductant. This paper describes the installed SCR systems and reports some of the emissions testing results and costs. With the SCR systems in place, the engines were successfully able to meet the permitted exhaust emissions requirements of 0.07 g/bhp-hr of NOx, 0.1 g/bhp-hr of CO, and 0.15 g/bhp-hr of VOC’s (volatile organic compounds) with less than 10 ppmvd of ammonia slip @ 15% O2. Additional measurements were made of formaldehyde and acrolein. Very low levels of these emissions were found after the SCR.
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ASME 2003 Internal Combustion Engine Division Spring Technical Conference
May 11–14, 2003
Salzburg, Austria
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-3678-9
PROCEEDINGS PAPER
Selective Catalytic Reduction (SCR) System Installation and Commissioning at the Chow II Power Plant in Chowchilla, California
Don Newburry,
Don Newburry
Miratech Corporation, Tulsa, OK
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Mike Owings
Mike Owings
Miratech SCR Corporation, Tulsa, OK
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Don Newburry
Miratech Corporation, Tulsa, OK
Pat Runnels
Miratech Corporation, Tulsa, OK
Mike Owings
Miratech SCR Corporation, Tulsa, OK
Paper No:
ICES2003-0594, pp. 519-524; 6 pages
Published Online:
February 4, 2009
Citation
Newburry, D, Runnels, P, & Owings, M. "Selective Catalytic Reduction (SCR) System Installation and Commissioning at the Chow II Power Plant in Chowchilla, California." Proceedings of the ASME 2003 Internal Combustion Engine Division Spring Technical Conference. Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components. Salzburg, Austria. May 11–14, 2003. pp. 519-524. ASME. https://doi.org/10.1115/ICES2003-0594
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