摘要
该文利用压汞分析微观手段,对吸收剂孔结构的实验数据提出脱硫剂的孔径分布满足高斯函数分布形式,在此基础上,充分考虑了吸收剂颗粒内部孔结构在硫化反应过程中的变化,建立了干性条件下 SO2和多孔 CaO 反应的孔分布数学模型。模型计算结果与试验结果吻合较好,能够很好地反映脱硫反应的本质过程,可以用来预测脱硫剂的钙转化率。
There has been significant interest in the reaction mechanism of limestone with sulfur dioxide. In this paper, the pore size distribution of calcined sorbent shows following Gaussian function according to the mercury porosimetry experiments. A pore size distribution model has been established on the basis of mercury porosimetry measurement, which has been used to simulate the process sulfation reaction of desulfurizer occur in furnace. The calculations make good agreement with experiments carried out on five different sorbents in fluidized bed reactor. The pore size distribution model explains the effects of various factors such as particle size, pore size distribution and concentration of SO2 on CaO conversion. The results show that pores of a radius in the range 100-600nm remain high CaO conversion.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第4期147-151,共5页
Proceedings of the CSEE
关键词
脱硫反应
干性条件
孔分布模型
吸收剂
数学模型
热能动力工程
Thermal power engineering
Desulfurization
Calcium-based sorbent
CaO conversion
Pore size distribution model
