Coal combustion characteristics on an oxy-fuel circulating fluidized bed combustor with warm flue gas recycle
Coal combustion characteristics on an oxy-fuel circulating fluidized bed combustor with warm flue gas recycle
复制标题
温烟气循环富氧循环流化床燃烧室煤燃烧特性
DOI：
10.1016/j.fuel.2013.06.016
复制
发表时间：
2014-07
期刊：
影响因子：
7.4
通讯作者：
Chen, Xiaoping
中科院分区：
文献类型：
--
作者：
Sun, Haicheng;Zhao, Changsui;Zhou, Wu;Chen, Xiaoping
在50 kW全氧循环流化床（CFB）燃烧器上进行了100 h以上的稳态温烟气循环运行试验。结果表明，全氧循环流化床锅炉运行具有良好的安全效益，特别是在氧转换过程中。在氧-燃料操作中，对于不同的燃料，略高的氧浓度（范围从22.2%至23.4%）可以带来与空气燃烧相当或更高的碳燃尽。与空气燃烧相比，以ppm为单位的烟气中SO2浓度较高，而以mg/MJ为单位的SO2排放量较低。在本试验条件下，石灰石在富氧燃烧条件下的脱硫效率可达80%。富氧燃烧煤的钙利用率高于空气燃烧，这可能与烟气中的水分含量较高有关。富氧燃烧的燃料氮转化率远低于空气燃烧，燃料中挥发分含量越高，循环烟气中NO的还原率越高。
More than 100-h steady warm flue gas recycle operation was carried out on a 50 kWthoxy-fuel circulating fluidized bed (CFB) combustor burning three kinds of fuel. The results demonstrate the good safety benefit of oxy-CFB operation, especially in the oxy-transition process. A slightly higher oxygen concentration, ranging from 22.2% to 23.4% for different fuels in oxy-fuel operation, can bring equivalent or higher carbon burnout than air combustion. SO2concentration in ppm unit is higher in flue gas while the SO2emission in mg/MJ unit is lower than air combustion. The desulfurization efficiency of limestone can reach 80% in oxy-fuel combustion in this test. The higher Ca utilization rate burning coal in oxy-fuel combustion than that in air combustion may be associated with the high moisture content in the flue gas. Fuel nitrogen conversion ratio in oxy-fuel is much lower than in air combustion, and it looks like higher volatile content in fuel leads to a bigger reduction of NO in the recycle flue gas.
登录
查看更多内容
影响因子：
5.3
作者：
L. Jia;Y. Tan;E. Anthony
通讯作者：
L. Jia;Y. Tan;E. Anthony
DOI：
10.1016/j.ijggc.2011.05.009
发表时间：
2011-01-01
影响因子：
3.9
作者：
Ahn, Jiyoung;Okerlund, Ryan;Eddings, Eric G.
通讯作者：
Eddings, Eric G.
影响因子：
3.9
作者：
L. Duan;Changsui Zhao;Wu Zhou;Chengrui Qu;Xiaoping Chen
通讯作者：
L. Duan;Changsui Zhao;Wu Zhou;Chengrui Qu;Xiaoping Chen
影响因子：
3.9
作者：
Wall, Terry;Liu, Yinghui;Yu, Jianglong
通讯作者：
Yu, Jianglong
湿法循环富氧煤燃烧过程中水蒸气对直接硫酸盐化的影响研究
影响因子：
11.2
作者：
Duan, Lunbo;Jiang, Zhongxiao;Zhao, Changsui
通讯作者：
Zhao, Changsui