化工学报Issue(2)：684-691,8.DOI:10.3969/j.issn.0438-1157.2014.02.045
循环流化床锅炉飞灰增湿低温悬浮脱硫特性
Suspended fluidized bed desulfurization characteristics of humidified fly ashes from circulating fluidized bed at low temperature
摘要
Abstract
Humidified activation of fly ashes from circulating fluidized bed (CFB) boilers was conducted. Samples of the fly ash were characterized by desulfurization in the suspended fluidized bed and scanning electron microscopy (SEM). The desulfurization of humidified fly ashes was conducted at low temperature. The results indicated that with increase of reaction temperature, the calcium utilization increased when water/CaO ratio was 1. The utilization increased continuously and then decreased with temperature when the ratio was 3 or 5. The rate decreased when the ratio was 10. It was shown that the calcium utilization of humidified fly ashes in a suspended fluidized bed could be increased from 41%to 60%. The optimal reaction temperature was between 60℃ and 80℃. The results from SEM showed that treatment of humidified activation promoted an increase in ash porosity, while the porosity contributed to further desulfurization in suspended fluidized beds.关键词
脱硫/飞灰/低温/增湿/活化/循环流化床Key words
desulfurization/fly ash/low temperature/humidification/activation/circulating fluidized bed分类
化学化工引用本文复制引用
王勤辉,蔡毅,程乐鸣,许霖杰,方梦祥..循环流化床锅炉飞灰增湿低温悬浮脱硫特性[J].化工学报,2014,(2):684-691,8.基金项目
国家“十二五”科技支撑计划项目（2012BAA02B01-03）。@@@@supported by the National Key Technology Research and Development Program (2012BAA02B01-03) （2012BAA02B01-03）
