摘要
为了考察自主设计的新型板式旋转填料床传质及压降性能,分别以NaOH-H_2O和空气-水为实验体系,采用对比实验的研究方法,考察了转速、液量和气量对新型板式填料床、传统丝网填料床和鲍尔环填料床的传质与压降性能的影响。传质性能研究表明:在相同操作条件下,丝网填料床传质性能最优,但新型板式填料床传质性能与丝网填料床相差不大(<1.0 s^(-1));压降性能研究发现,气量是影响填料床压降的重要因素,且在相同操作条件下,压降值始终有丝网填料床>鲍尔环填料床>新型板式填料床,丝网填料床压降值与新型板式填料床相差33%以上。新型板式填料床在传质效率损失不大的情况下,损失了较低能耗,表现出优良的综合性能。
In order to investigate mass transfer and pressure drop performance, the new type of self-designed plate packing rotating packed bed （RPB）, wire mesh RPB and Pall ring RPB were compared considering the effects of rotating speed, liquid flow rate and gas flow rate. The absorption system NaOH-H2O and air-water were used as the experimental systems respectively. The mass-transfer experimental results show that under the same operation conditions, the wire mesh RPB has the highest volumetric mass transfer coefficient, and the mass transfer performance of the new type plate packing RPB is close to that of wire mesh RPB （ 〈 1.0 s^-1 ） ; for the pressure drop, the results indicate that gas flow rate is the most effective factor on the pressure drop; in addition, the value of pressure drop of wire mesh RPB is higher than that of Pall ring RPB, and the pressure drop of new type of plate packing RPB is the lowest, meanwhile the percentage difference value of wire mesh RPB and new type of plate packing RPB is more than 33%. The results show that the new type of plate packing RPB has better performance on energy consumption during a small reduction on mass transfer. The results provide the basis for design and improvement of packing structure of RPB.
作者
宋彬
祁贵生
刘有智
王探
郑奇
武晓利
SONG Bin QI Gui-sheng LIU You-zh WANG Tan ZHENG Qi WU Xiao-li(Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China, Taiyuan 030051, Shanxi, China Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, Taiyuan 030051, Shanxi, China)
出处
《化学工程》
CAS
CSCD
北大核心
2017年第3期27-32,共6页
Chemical Engineering(China)
关键词
旋转填料床
新型板式填料
传质
压降
rotating packed bed
new type of plate packing
mass transfer
pressure drop
