Manganese Additive Effects on Emissions From a Model Gas Turbine Combustor

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Abstract
The effect of 0.06% by volume of the additive, 2-Methylcyclopentadienyl manganese tricarbonyl (Ethyl Corporation Combustion Improver No. 2), on particulate and gaseous emissions from a model gas turbine combustor was measured. The additive increased the total mass of particulate emissions in these combustor experiments, probably by adding manganese oxides to the exhaust. Without the additive, the smallest of the carbonaceous exhaust particles were typically 0 (0.1 μ) in diameter. These particles agglomerate into “popcornlike” structures of 0 (1μ) and thus are efficient scatterers of visible radiation. With the additive, exhaust particles, composed of manganese oxides and carbon, are 0 (0.05 μ) with significant reduction in agglomeration. No effect on gaseous NO emissions and a negligible decrease in gaseous CO emissions was noted.

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