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이지구(Ji-Gu Lee),강지윤(Ji-Yun Kang),김윤제(Youn-Jea Kim) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
An induced gas flotation (IGF) machine is used for water treatment of plant industries such as oil sand and chemical plants. Since the interaction between the stator and rotor affects the flotation performance of IGF, an understanding of the geometric blade configuration is essential for the design of IGF. In this study, optimal design of the IGF was carried out using the commercial code, ANSYS CFX. In particular, response surface method (RSM) which was based on the results of the design of experiment (DOE) technique was used to find an optimal rotor shape with improved performance. In addition, power number and void fraction ratio (VFR) were selected to evaluate the flotation performance with three design configurations of the rotor for the optimization. As a result, the optimal model exhibited better flotation performance than that of the reference model.
유입구 베인 형상 변화가 FWKO 분리효율에 미치는 영향
강지윤(Ji-Yun Kang),이지구(Ji-Gu Lee),김윤제(Youn-Jea Kim) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
The Free Water Knock Out (FWKO) vessel is a primary oil separation process device in oil sands plant. In general, the multiphase separator separates a mixture of oil, gas, and water by density gradient. The horizontal type of FWKO vessel which was generally used is divided into four compartments. The initial separation section is a crucial process for the control of kinetic energy and velocity of the feed fluids. Vane distributor which is one of the important inlet devices improves separation efficiency by reducing agitation and foaming. In this study, the effect of the change of fluid flow according to configuration of inlet vane on the separation performance was numerically investigated. In particular, the velocity vector field, streamlines and volume fraction were calculated and graphically depicted using the commercial code, ANSYS FLUENT ver. 16.1. In order to evaluate the separation efficiency of FWKO vessel, the analysis of mass flow rate of oil and water was employed.