摘要
在截面尺寸为400 mm400 mm的方形截面循环悬浮床冷态实验台架上,以空气为流化介质,平均粒径40 祄的玻璃粉为循环物料,采用双光路光纤密度探头,测量了颗粒浓度随床底部进气结构、顶部结构和内构件等几何结构的不同而变化的规律;在改变表观气速和循环流率等操作参数的情况下测量了床内颗粒浓度的分布;根据部分测量结果分析了这些因素对边角处颗粒回流效应的影响. 结果表明,优化几何结构和选取合理的操作参数都可以提高烟气脱硫循环悬浮床内气固接触反应的脱硫效率.
In order to develop the advanced flue gas desulphurization (FGD) technology, a cold circulating suspension bed facility with a cross section of 400 mm400 mm was built. Air and glass granules with a mean diameter of 40 mm were used in experiment. A dual-optic density probe was used to measure the particle concentration and distribution changes with bed parameters, such as air jet entrance at the bed bottom, top structure and inner structure, superficial air velocity, circulating flow rate. The influence of some factors on the wall and corner particle back-flow was analyzed too. The experimental results show that it is necessary to optimize the geometrical configuration and choose suitable working parameters of the circulating suspension bed to improve desulphurization efficiency.
出处
《过程工程学报》
CAS
CSCD
北大核心
2003年第3期200-205,共6页
The Chinese Journal of Process Engineering
基金
国家重点基础研究专项经费资助项目(编号:G19990222)
