Sulzer Chemtech USA, Inc.

Science in Aid of Cleaner Air

Some 60 million tons per year of nitric oxides are released worldwide to the environment as the consequence of human energy consumption. Efficient technologies have been developed to treat flue gas, and Sulzer with some 50 plants is the technology leader. A recent example is AES Cayuga, a coal-fired power plant in Lansing, NY (USA). The combustion of fossil fuels is often conducted at highest possible temperatures in order to secure highest thermal efficiency in power generation. At these conditions, several forms of nitric oxides (NOX) are generated. Nitric oxides are extremely reactive and exert the formation of the ground ozone. For these reasons the nitric oxides belong to the most harmful pollutants.

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