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Dr. Fernando Preto, Senior Scientist and Group Leader for Biomass Conversion at CANMET Energy Technology Centre, discussed the co-firing of lignite with wood (pine) residues and peat focusing on emissions and ash deposition. His presentation reviewed the effects of fuel blending ratios, excess air, and moisture content on air emissions (CO, SO2 and NOx) from co-combustion of wood residues and peat with lignite. Co-firing leads to significant differences in the concentrations of some major inorganic compounds (e.g. SiO2, CaO, MgO, SO3) in deposited ashes. There was a discussion of the combustion of municipal waste (MSW). Fernando made a very important point. Their research shows that the presence of sulfur reduces dioxin formation. So burning MSW in a coal-fired boiler has a beneficial impact on emissions. McIlvaine pointed out the advantages of using the chlorine in the waste to convert mercury to a soluble form. It was further observed that with the new Utility MACT rules power plants will have the air pollution controls to deal with MSW.
Revision Date: 3/17/2011
Tags: 221112 - Fossil Fuel 化石燃料, Canmet Energy, Biomass