1025t/h锅炉燃用越南无烟煤和烟煤混煤的燃烧特性的研究  

Study on Combustion Characteristics of Vietnamese Anthracite Blended with Bituminous Coal and Fired in a 1025t/h Boiler

作　　者：沈跃良[1] 苏余宁 廖宏楷[1] 何仁伟[2] 赵小峰[2] 

机构地区：[1]广东电网公司电力科学研究院,广州510600 [2]湛江电力有限公司,湛江524099

出　　处：《动力工程》2007年第6期885-889,共5页Power Engineering

摘　　要：对湛江电力有限公司1025 t/h锅炉燃用越南"宏基"无烟煤和烟煤混煤的燃烧特性进行了试验研究,分析了混煤燃烧后的飞灰特征。结果表明:关小周界风、降低一次风速、提高烟煤比例等有利于混煤着火的运行方式,并不一定有利于混煤的燃尽;含氧量与该混煤燃尽率之间也没有明确的相关性;提高混煤的煤粉细度对降低飞灰可燃物含量也存在一定的限度。这些特性与混煤中越南无烟煤和烟煤的燃烧特性差异过大密切相关,提高混煤燃尽率的有效方法是选择最佳混合比例。It＇s very difficult for Vietnam ＂Hongji＂ anthacite, botk to ignite and also burn out. It exhibited particular combustion characteristics, when being fired in a 1025t/h boiler of the Zhanjiang Electric Power Co. Ltd., after having been blended with easily ignitable bituminous coal. Such a way of blending facilitates igition, but not mecessarity burning out; moreover, there doesn＇t exist a defenite relationship between oxygen supply and burnout rate. These characteristics are closely ralated with the large difference that exists between the combustion characteristics of Vietnam anthracite and the easily ignitable bituminous coal. Therefore, an optimal blending ratio should be opted, accompanied by suitable combustion adjustments during operation.

关 键 词：能源与动力工程 锅炉 燃烧特性 混煤 最佳混合比 燃烧调整 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]