广东电力2017，Vol.30Issue(5)：5-10,6.DOI:10.3969/gddl/gddl2017/1705/170502.htm
O2/CO2气氛下煤粉燃烧SO2排放特性
SO2 Emission Characteristic of Pulverized Coal Combustion in O2/CO2 Atmosphere
刘雄伟 1马文静 1原辉 1陈启召 1刘彦丰1
作者信息
- 1. 华北电力大学 能源动力与机械工程学院,河北 保定 071003
- 折叠
摘要
Abstract
In order to study SO2 emission characteristic of pulverized coal combustion in O2/CO2 atmosphere, this paper analyzes influence of excess air coefficient, CO2 volume fraction, furnace temperature and fuel ratio on SO2 emission characteristic at the time of single coal combustion and mixed coal combustion by simulating actual condition of mixed coal combustion in the power plant. Results show that excess air coefficient increases from 0.8 to 1.4 and the higher SO2 emission mass concentration (thereafter as emission concentration) is, the lower CO emission concentration is. SO2 emission concentration in O2/CO2 atmosphere which has decreased 10% is less than that in O2/N2 atmosphere. As CO2 volume fraction in reaction atmosphere increases from 20% to 50%, SO2 emission concentration gradually reduces while CO emission concentration gradually increases. With rise of furnace temperature, SO2 emission concentration in O2/CO2 and O2/N2 atmosphere both increases while changes of SO2 emission concentration curve slopes in different atmosphere and temperature rise time periods are different. In addition, the less fuel ratio is, the better combustion of pulverized coal is and the higher conversion percentage of S to SO2 in fuel is. In high temperature and enriched oxygen atmosphere, the higher S content in fuel is, the higher SO2 emission is , but conversion percentage of S to SO2decreases.关键词
O2/CO2气氛/煤粉燃烧/混燃/燃料比/排放浓度/富氧燃烧/过量空气系数Key words
O2/CO2 atmosphere/pulverized coal combustion/mixed combustion/fuel ratio/emission concentration/oxygen-enriched combustion/excess air coefficient分类
资源环境引用本文复制引用
刘雄伟,马文静,原辉,陈启召,刘彦丰..O2/CO2气氛下煤粉燃烧SO2排放特性[J].广东电力,2017,30(5):5-10,6.
