(583h) Development of Challenging Technology on Combustion Hindrances in Commercial Solid Refuse Fuel Combustion Facility

Solid refuse fuel (SRF) is a source of fuel for the generation of steam for power, heating, industrial processing or other uses. To operate SRF combustion plants consistently and reliably, due to harsh conditions, it is essential to solve the various problems such as de-fluidization of mixture of feed and bed materials, fuel-feed failure, reduction of efficiency with temperature drop, degradation of equipment (erosion and corrosion) caused by high temperature and deposit of salt and ash. In this study, we have developed a core technology that can solve various combustion failure phenomena raised in the commercial scale combustion process (waste to energy) having a capacity of more than 50 t/day level. In order to provide stable air flow during steady-state operation and to remove the bottom ash generated during combustion, the design technology of air distributor of the combustion furnace was developed. Chemical additives for the prevention of corrosion caused by clinker formation during SRF burning were applied and the results were analyzed. Furthermore, to investigate the effects of high temperature and corrosive condition on the tube degradation in SRF combustion plants, the tube corrosion test unit was developed and the degree of tube corrosion was examined by varying the operating condition.