440t/h CFB锅炉掺烧石油焦二氧化硫排放特性研究  

Study of the SO_2 Emission Characteristics of a 440 t/h Circulating Fluidized Bed Boiler Burning Coal Mixed and Diluted With Petroleum Coke

作　　者：张中林[1] 陈晓平[2] 

机构地区：[1]南京工程学院电力仿真与控制工程中心,江苏南京210013 [2]东南大学能源与环境学院,江苏南京210096

出　　处：《热能动力工程》2012年第4期455-458,516-517,共4页Journal of Engineering for Thermal Energy and Power

基　　金：国家重点基础研究发展计划基金资助项目(2006CB705806)

摘　　要：在440 t/h大型循环流化床锅炉上进行了燃烧不同比例煤和石油焦混合燃料时二氧化硫排放特性的试验研究。研究了燃烧不同比例的混合燃料、炉膛温度、过量空气系数和钙硫摩尔比对二氧化硫排放特性的影响。研究结果表明,过量空气系数和钙硫摩尔比的增加可以降低二氧化硫排放浓度。存在一个最佳脱硫温度,二氧化硫排放浓度最低,对于各种混合燃料最佳脱硫温度应在830～850℃之间。In a 440 t/h large-sized circulating fluidized bed boiler,an experimental study of its sulfur dioxide emission characteristics was performed by burning coal mixed and diluted with petroleum coke in various proportions.The influence of the furnace temperature,excess air ratio and calcium/sulfur molar ratio on the sulfur dioxide emission characteristics was studied during the combustion of the blended fuel in various proportions.It has been found that to increase the excess air ratio and calcium/sulfur molar ratio can reduce the sulfur dioxide emissions concentration.There exists an optimum desulfurization temperature,at which the sulfur dioxide emissions concentration will be the lowest.For a variety of blended fuels,the optimum desulfurization temperature falls in a range from 830℃ to 850℃.

关 键 词：循环流化床 掺烧 石油焦 二氧化硫 

分 类 号：X701[环境科学与工程—环境工程]