Current research shows that the only hazardous air pollutant of significance emitted from large bore natural gas engines is formaldehyde A literature review on formaldehyde formation is presented focusing on the interpretation of published test data and its applicability to large bore natural gas engines. The relationship of formaldehyde emissions to that of other pollutants is described. Formaldehyde is seen to have a strong correlation to total hydrocarbon (THC) level in the exhaust. It is observed that the ratio of formaldehyde to THC concentration is roughly 1.0–2.5 percent for a very wide range of large bore engines and operating conditions. The impact of engine operating parameters, load, rpm, spark timing, and equivalence ratio, on formaldehyde emissions is also evaluated. [S0742-4795(00)01004-8]
Formaldehyde Formation in Large Bore Engines Part 2: Factors Affecting Measured CH2O
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division November 6, 1998; final revision received by the ASME Headquarters December 29, 1999. Technical Editor: D. Assanis.
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Olsen , D. B., and Mitchell, C. E. (December 29, 1999). "Formaldehyde Formation in Large Bore Engines Part 2: Factors Affecting Measured CH2O." ASME. J. Eng. Gas Turbines Power. October 2000; 122(4): 611–616. https://doi.org/10.1115/1.1290586
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