文献类型：期刊文献

中文题名：烟气脱硫吸收塔底部浆液池内流场特性的数值模拟

英文题名：Numerical Simulation of Flow Field in the Slurry Pond of a Flue-Gas Desulfurization Tower

作者：崔娜[1];周国忠[2];李伟[1];肖文德[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237;[2]温州长城搅拌设备设计研究所,温州325028

年份：2009

卷号：25

期号：2

起止页码：126

中文期刊名：化学反应工程与工艺

外文期刊名：Chemical Reaction Engineering and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：侧搅拌;计算流体力学;浆液池

外文关键词：side-entry impeller; computational fluid dynamics; slurry pond

摘要：为了达到烟气脱硫吸收塔内烟气、吸收液和析出铵盐三相混合的效果,烟气脱硫吸收塔都采用侧入式的推进式搅拌器。运用计算流体力学技术(CFD)对吸收塔底部浆液池内单相和液固两相的侧搅拌流场进行数值模拟。模拟结果表明,液固两相搅拌时,与单相流相比,固相的引入抑制了液体向上的发展,流体循环流动范围变小。径向角作用是产生不对称的循环流,增加流体湍动,但对液固两相的固体悬浮状况没有明显改善。法向角可以改善浆液池底部单相流的湍动和液固两相的固体悬浮,当法向角为7°时,浆液池内固体颗粒的悬浮状态最好。
In order to obtain homogeneity of flue-gas, sorbents and erystalloids, most of flue-gas desulfurization （FGD） towers in the world are equipped with side-entry impellers. The single phase flow and liquid-solid flow were simulated by computational fluid dynamics （CFD）. The effects of angle θ （the angel between radial and shaft） and angle φ （the angel between shaft and the normal of tank-wall） on homogeneity were investigated. The results showed that solid particles weakened the axial flow of solid-liquid phases and θ could only ameliorate part of the velocity magnitude of single phase flow field. No evident improvement of solids suspension immersed when θ was applied, φ could improve blending performance of both single phase and liquid-solid simulations and the solids suspension was good when φ was 7°.