超重力湿法脱除气体中细颗粒物研究  

Removal of fine particles by high gravity wet cleaning

作　　者：付加 祁贵生[1,2] 刘有智[1,2] 田建勋[1,2] 郭强[1,2] 董梅英[1,2] 

机构地区：[1]中北大学超重力化工过程山西省重点实验室,山西太原030051 [2]山西省超重力化工工程技术研究中心,山西太原030051

出　　处：《化学工程》2015年第4期6-10,共5页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(21376229);山西省科技攻关计划(工业)(20130321035-02)

摘　　要：开发了2台转子规格相近的逆流与错流旋转填料床,采用平均粒径为2.25μm的粉煤灰模拟细颗粒物,通过实验对比了逆流床与错流床的除尘效率和压降。研究表明:逆流床的除尘效率高于错流床,分别达到98.5%和97.5%。对比研究了转速、液气比、气速对逆流床和错流床除尘效率的影响规律,确定了各自适宜的工艺参数。逆流旋转填料床可以在更小的液气比和转速下达到更高的除尘效率,压降仅比错流床大100 Pa,更适用于工业化推广,应用前景广阔。A pair of countercurrent-flow and cross-flow rotating packed bed （RPB） with the rotors of same size was developed, and the flyash with average particle size of 2.25 p^m was used as simulated dust. Dedusting efficiency and pressure drop of these two RPB were compared by experimentation, and the results show that the dedusting efficiency of countercurrent-flow RPB （98.5%） is higher than that of cross-flow RPB （97.5%）. The dedusting efficiency of these two RPB was investigated under different rotating speed, liquid-gas ratio, and gas velocity, and then each of the two appropriate operating conditions was ascertained. The countercurrent-flow RPB has higher efficiency under the conditions of smaller liquid-gas ratio and rotating speed, with its larger than that of cross-flow RPB, which is more suitable for the industrial promotion prospect. pressure drop only 100 Pa and has broad application

关 键 词：超重力 旋转填料床 细颗粒物 除尘效率 压降 

分 类 号：TQ028[化学工程]