烟气脱硫循环流化床内气固流动的PDA试验研究

提出了由两级分离系统组成的循环流化床烟气脱硫工艺。用粒子动态分析仪(PDA)对床内不同高度方向上颗粒横向、轴向速度、颗粒粒径及浓度分布进行了测量，得到了床内气固流动的瞬时脉动特性以及总体气固流动行为，试验结果为烟气脱硫新工艺的结构设计及优化提供了依据。

Experimental Study of Gas-solid Flows in a Circulating Fluidized Bed of Flue Gas Desulfurization by the Use of a Particle Dynamics Analyzer

Flue gas desulfurization technology is proposed on the basis of a circulating fluidized bed composed of a two-stage separation system. With the help of a particle dynamics analyzer measurements were taken of particle transverse and axial velocities, particle diameter as well as concentration distribution at different height levels in the bed. As a result, obtained were the momentary pulsation characteristics of the gas-solid flows and overall gas-solid flow behavior in the fluidized bed. These results can provide a solid basis for the structural design and optimization of new technology schemes of a flue gas desulfurization process.