OCR Text |
Show Atmospheric Pressure Combustion of Pulverised Coal and Coal Based Blends for Power Generation Abstract By W L van de Kamp, D J Morgan and P A Roberts IFRF, The Netherlands There is an increasing international trend, particularly within the European Union, to fire blends of imported coals for power generation. Furthermore there is a strong interest in the European 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 semi-industrial scale research facilities in IJrnuiden, 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 along with a selection of experimental results, in particular with respect to the effect of blending/co-firing ratios on NOx emissions and bum-out. Introduction Blends of pulverised coal are regularly used to fire boilers in the power generation industry. This is particularly the case in countries where all coal fired for power generation must be imported. Examples of countries in this situation, within the European Union, are Denmark and the Netherlands. In these countries the vast majority of the coal fired power generation facilities are presently based on atmospheric pressure, pulverised coal fired boilers. |