Atmospheric Pressure Combustion of Pulverised Coal and Coal-Based Blends for Power Generation

There is an increasing international trend, particularly within the Europe an Union, to fire blends of imported coals for power generation. Furthermore there is a strong interest in the Europe an Union to co-fire biomass materials and sewage sludge with pulverised coal in utility boilers. This paper gives information on experiments undertaken by the IFRF at its s emi-industrial scale research facilities in Ijmuiden, the Netherlands , in connection the firing of coal blends, and the co-firing of shredded straw and pulverised sewage sludge with pulverised coal. Details of the problems encountered are presented a long with a selection of experimental results, in particular with respect to the effect of blending/co-firing ratios on NOx emissions and bum-out.