Study on mathematical model to predict aerated power consumption in a gas-liquid stirred tank

被引:8
|
作者
Luan, Deyu [1 ]
Zhang, Shengfeng [1 ]
Wei, Xing [1 ]
Chen, Yiming [1 ]
机构
[1] Qingdao Univ Sci & Technol, Coll Electrochem Engn, Qingdao 266061, Peoples R China
关键词
Gas-liquid stirred tank; Aerated power consumption; Aerated flow number; Mathematical model; NUMERICAL-SIMULATION; BUBBLE-SIZE; FLOW; IMPELLER; TURBINE;
D O I
10.1016/j.rinp.2017.10.042
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The aerated power consumption characteristics in a transparent tank with diameter of 0.3 m and flat bottom stirred by a Rushton impeller were investigated by means of experimental measurement. The test fluid used was tap water as liquid and air as gas. Based on Weibull model, the complete correlation of aerated power with aerated flow number was established through non-linear fit analysis. The effects of aerated rate and impeller speed on aerated power consumption were made an exploration. Results show that the changeable trend of the aerated power consumption is found to be similar under different impeller speeds and impeller diameters, i.e. the aerated power is close to dropping linear at the beginning of gas input, and then the drop tendency decreases as the aerated rate increases, at the end, the aerated power is a constant on the whole as the aerated rate reaches up the loading state. The non-linear fit curve is done using the software Origin based on the experimental data. The fairly high precision of data fit is obtained, which indicates that the mathematical model established can be used to accurately predict the aerated power consumption, comparatively. The proposed research provides a valuable instruction and reference for the design and enlargement of stirred vessel. (C) 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.
引用
收藏
页码:4085 / 4088
页数:4
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