中文摘要：

介绍了SCR、SNCR以及SNCR／SCR联合技术等3种脱硝技术，并引进了对电厂投资脱硝设备决策有重要意义的技术经济分析方法。主要考虑3种脱硝技术的设计参数及对电厂现有设备运行的影响；通过计算年费用、脱除每吨NOx的费用以及排污费、的动态分析模型用于对烟气脱硝装置的经济评价，贷款政策对脱氮费用的影响等进行综合比较。将经济学为电厂进行初步决策和可行性研究提供了依据。

英文摘要：

Three de-NOx technologies such as SCR, SNCR and SNCR/SCR HIBIRD were introduced. A significant techno-economic method was utilized for the decision-making of power plants to invest in de-NOx equipment. Designed parameters for the three and their effects on the operation of existing equipment were taken into consideration; For economical analysis, the main way is to compare through calculating the annual fee, unit charge for de-NOx per ton, as well as the effect of charges for disposing pollutants and loan policy on de-NOx expense. The application of dynamic analysis model of economics in the economical evaluation of de-NOx equipment can surely provide important reference for the preliminary decision-making and feasibility study of power plants.