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O2/CO2气氛下循环流化床煤燃烧SO2排放
引用本文:段伦博,周骛,屈成锐,陈晓平,赵长遂. O2/CO2气氛下循环流化床煤燃烧SO2排放[J]. 工程热物理学报, 2012, 0(1): 151-154
作者姓名:段伦博  周骛  屈成锐  陈晓平  赵长遂
作者单位:东南大学能源与环境学院
基金项目:国家重点基础研究发展计划项目(No.2011CB707301)
摘    要:在热输入功率50 kW的循环流化床O2/CO2燃烧试验装置上研究燃煤SO2排放特性及石灰石脱硫机理。结果发现,未添加石灰石时,O2/CO2气氛下SO2排放量比相同O2浓度的空气气氛下低;随着O2浓度的升高,排放量升高。相同钙硫摩尔比下,O2/CO2气氛下石灰石的脱硫机理以直接脱硫为主,脱硫效率比空气气氛下高;随着O2浓度的增加,石灰石脱硫效率提高。

关 键 词:循环流化床  O2/CO2燃烧  SO2排放  脱硫效率

SO2 Emission From a Coal-Fired Circulating Fluidized Bed Combustor Under O2/CO2 Atmosphere
N Lun-Bo,U Wu,U Cheng-Rui,N Xiao-Ping,HAO Chang-Sui. SO2 Emission From a Coal-Fired Circulating Fluidized Bed Combustor Under O2/CO2 Atmosphere[J]. Journal of Engineering Thermophysics, 2012, 0(1): 151-154
Authors:N Lun-Bo  U Wu  U Cheng-Rui  N Xiao-Ping  HAO Chang-Sui
Affiliation:(School of Energy and Environment,Southeast University,Nanjing 210096,China)
Abstract:The SO2 emission and limestone desulfurization characteristics were studied in a 50 kW circulating fluidized bed combustor under O2/CO2 atmosphere.Results show that without limestone addition,SO2 emission in 21%O2/79%CO2 atmosphere is lower than that in air atmosphere.As O2 concentration increases in O2/CO2 atmosphere,SO2 emission increases.With the same Ca/S molar ratio,direct sulfation is the dominant desulfurization mechanism in O2/CO2 atmosphere and the desulfurization efficiency is higher than that in air atmosphere.As O2 concentration increases,the desulfurization efficiency increases in O2/CO2 atmosphere.
Keywords:circulating fluidized bed  O2/CO2 combustion  SO2 emission  desulfurization efficiency
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