垂直管道浸取器的空气升液研究  

STUDY ON THE AIR-LIFT PUMPING FOR VERTICAL TUBULAR LEACHER

作　　者：郑成[1] 李宽宏[1] 

机构地区：[1]广州大学轻化系,华东理工大学化工研究所

出　　处：《化学反应工程与工艺》1995年第3期259-264,共6页Chemical Reaction Engineering and Technology

摘　　要：以内径为２４ｍｍ的垂直管道浸取器的一根上行管为升液管，用水和５５～６５目河砂配成各种浓度的悬浮液做冷模试验。在水的表现流速为０．１５～０．６５ｍ／ｓ，空气表观流速为０．０５～２．１５ｍ／ｓ，固相质量分率为０～１５％，以及充气高度为２．２８０～３．３７９ｍ的实验范围内，观察了空气升液器的运行情况，测定了扬程、效率，还比较了进气孔径的影响。本文结合垂直管道浸取器的特点，引入气相滞留率和摩擦压力降模型，并考虑气体进出升液管的局部阻力，通过机械能衡算，导出了空气升液器的扬程模型。实验证明，该模型计算值与实验值相吻合，并可推广应用于常规空气升液泵计算气液流量等关系。The air-lift pumping is used to provide head for vertical tubular leacher.Based on litera-ture correlations ,the model for predicting lift head and efficiency of air-water-sand particlepumping system was derived.The operating characteristics of air-lift pumping for verticaltubular leacher has been measured through a 24 mm-ID experimental set.When the superficialvelocity of air is 0.05～2.15 m/s,the superficial velocity of water is 0.15～0.65 m/s,themass fraction of solid in slurry smaller then 15%,and the aerated height is 2.280～3.379m,the estimate values agree well with the experimental result.

关 键 词：垂直管道 浸取器 空气升液泵 浸取设备 

分 类 号：TQ051.23[化学工程]