Advanced DeNOx Technologies for the Minimization of Capital and Operational Costs in Combustion Facilities

摘要

Power sector is currently seeking for the cost-effective minimization of NO_X emissions. This demanding challenge has been met by INERCO through a technological approach successfully applied in a European coal-fired power plant, whose scope and results are hereinafter described. Firstly, advanced combustion technologies lead to a maximum intensification of fuel and air staging strategies for any operating scenario. A tight control over combustion by the accurate monitoring of in-furnace gas concentrations and LOI is crucial to meet this objective. Secondly, this approach entails the synergic integration of these technologies with NO_X abatement solutions alternative to conventional catalytic technologies. This customized combination of advanced technologies has resulted in an alternative solution to SCR technology, leading to 30%-50% reductions in capital costs for the case study described. Otherwise, when applied to existing SCR units, the significant NO_X reductions achieved yield significant savings in operating costs, typically ranging from 40% to 60%.