燃煤电厂超低排放要求下的技术经济性分析

Technology and economic analysis of coal-fired power plants under the quirements of ultra-low emission

总结了国内在脱硝、脱硫、深度除尘等方面的主要超低排放控制技术,结合300 MW、600 MW、1 000 MW燃煤机组超低排放改造工程案例,分析了影响超低排放控制工艺投资和运行成本的因素。结果表明:设备购置费是控制投资成本的关键因素;运行成本主要由设备维护费、人工成本、消耗性指标构成,消耗性指标的占比最大;随着发电装备和污染治理技术的进步,脱硝、脱硫项目单位污染物的建设和运行成本大幅下降,但投资成本却随着超低排放改造要求及人力成本的提高而上升。

The main domestic ultra-low emission control technologies regarding denitrification,desulfurization,and advanced dedusting were summarized.Combined with ultra-low emission reconstruction projects of 300 MW,600 MW,and 1,000 MW coal-fired units,the factors affecting the investment and operating costs of ultra-low emission control technology were analyzed.The results show that equipment purchase cost is the key factor to control investment costs.Operating costs are mainly composed of equipment maintenance fees,labor costs,and expendable indicators,and expendable indicators accounts for the largest proportion.With the development of power generation equipment and pollution control technology,the construction and operation costs of denitrification and desulfurization project per unit pollutants dropped significantly,but the investment cost increased with the higher requirements of ultralow emission transformation and labor costs.