Emission control from stationary sources

In this chapter the removal of NO and is NB3 emphasised. In tbe troposphere NO contributes to smog formation and acid deposition. Stratospheric ozone depletion is catalysed by NO in the stratosphere. The application of catalysts for the selective catalytic reduction (SCR) of NO with NH3 is highlighted. The technology for catalytic NO removal from exhausts of stationary sources is now in a mature state, whereas the removal of ammonia is still in its infancy. Stationary sources are industrial boilers, power plants, waste and biomass incinerators, engines and gas turbines. Issues such as the catalyst types, tbe behaviour of these catalysts in power plants, the mechanism of NO and ammonia over the catalysts are discussed. Ammonia removal from biomass gasification is also reviewed in this chapter