严祯荣,耿丽萍,杨茉,罗晓明
YAN Zhen-rong1、2,GEN Li-ping1,YANG Mo1,LUO Xiao-ming2(1.University of Shanghai for Science and Technology

• 1:上海理工大学
• 2:上海市特种设备监督检验技术研究院

摘要(Abstract)：

湿法烟气脱硫装置中水力旋流器分级试验表明,进口石灰石浆液的颗粒质量浓度15%时,溢流口颗粒质量浓度达30%;溢流颗粒则集中于30μm以下;随着颗粒粒径的增大,颗粒底流口回收率也在增大,当粒径达到30μm时,回收率已经接近100%。数值模拟表明,雷诺应力湍流模型、自由表面多相流动模型和斯托克斯拉格朗日模型能很好地描述水力旋流器内复杂三维运动的石灰石颗粒分级运动和规律。采用了初始边界条件不需给分流比、也不需设定空气柱的数值方法,模拟结果显示了空气柱的形成、流体的旋流流动。模拟得到的不同粒径颗粒的分级效率与高进口质量浓度条件下的试验结果吻合较好。
In Wet Flue Gas Desulfurization Process,separation experiment of Hydrocyclone show that particle mass concentration of limestone flux in the upflow is 30% when particle mass concentration of limestone flux inlet is 15%,particle diameters in the upflow are mainly smaller than 30μm,particle recovery to the underflow are also growing bigger when particale diameter grow bigger,and particle recovery to the underflow are nearly 100% when particale diameter are 30μm.Numerical simulation show that RSM and VOF as well as Stokes Lagrange Model can commendably bewrite limestone particle Separation Mechanism of complicated 3D movement in Hydrocyclone.The numerical methods were adhibited that initialize boundary conditions need not enact the diffluence ratio,also not enact the air columniation.Results of simulation display the form of the air columniation,circle flow of liquid.The separation efficiency of the diameter′ particle between the results of simulation and the results of experiment under the condition of the bigger particle mass concentration inlet.

关键词(KeyWords)： 湿法烟气脱流;水力旋流器;石灰石颗粒;分流分级;数值模拟
WFGD;hydrocyclone;limestone granule;diffluence and classification;numerical simulation

Abstract:

Keywords:

基金项目(Foundation): 国家质量监督检验检疫总局科技计划项目(2008QK083)

作者(Author): 严祯荣,耿丽萍,杨茉,罗晓明
YAN Zhen-rong1、2,GEN Li-ping1,YANG Mo1,LUO Xiao-ming2(1.University of Shanghai for Science and Technology

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