Simulation study on flow field characteristics of air flotation deoiling process
Document Type
Article
Publication Date
5-26-2023
Department
Department of Materials Science and Engineering
Abstract
In order to solve the problems of low clarification efficiency and long subsequent processing steps in the extraction metallurgically dissolved air flotation(DAF) process, supported by the actual process with a domestic oil removal equipment, the Reynolds Average Navier-Stokes(RANS) turbulence transient numerical simulation method and the κ-ω turbulence model were used to analyze the flow characteristics of internal flow. The results are shown as follows. 1) With a constant air blowing volume, it is favorable for oil removal with the range of the liquid inlet volume from 45 m3/h to 55 m3/h because of the good flow properties; while the liquid inlet is lower than 40 m3/h or higher than 60 m3/h, the gas bubbles are concentrated in the surface of the reactor, which leads to the low efficiency of the oil separation. 2) With a constant liquid inlet volume, the wall velocity and gas volume fraction increase while the gas inlet increases, which shows unfavorable effects for the oil removal because of the gas distribution on the wall. 3) The lower position of the liquid inlet or the gas phase inlet and the lower height of the partition have obvious adverse effects on the separation of oil from liquid phases.
Publication Title
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology)
Recommended Citation
Chen, A.,
Mao, J.,
Cao, J.,
Liu, Y.,
Lu, S.,
Hwang, J.,
&
Sun, F.
(2023).
Simulation study on flow field characteristics of air flotation deoiling process.
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology),
54(5), 1680-1691.
http://doi.org/10.11817/j.issn.1672-7207.2023.05.003
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/17396