燃煤锅炉掺烧褐煤的经济性与环保特性分析

Analysis of the Economy and Environmental Protection Features Based on Blending Lignite in Coal-fired Boiler

目前大部分电厂锅炉实际燃用煤种与设计煤种不符,针对某电厂600 MW实际锅炉选取神木、褐煤和优混等煤种按不同的掺混比例进行混煤燃烧试验研究,分别得到混煤燃烧整体经济性和环保性的相关运行参数。试验结果表明:神木煤中掺混33%左右的优混A时锅炉效率可达94.78%,表现为经济性最佳;掺混33%左右的褐煤时污染物排放总量相对较低,表现为环保特性最佳。

At present most of the power plant boiler burning practical coal is different from design types of coal, proposes mixed coal combustion experiment according to different mix- ing proportion of coal such as Shenmu coal, lignite and Optimal mixed coal based on 600 MW boiler in a power plant, receives operation parameters which have dependence in mixed coal combustion＇s entirely economy and environmental protection. The results show that, boiler efficiency can reach 94.78% while Shenmu coal blending in about 33% of the Optimum mixed coal A, show the best economy; Pollutant emissions are relatively low while Shenmu coal blending in about 33% of lignite, show the best environmental protection.