유입구 장치 구성이 다상 유수분리기 성능에 미치는 영향

초록

The Free Water Knock Out (FWKO) vessel is commonly employed to separate oil, water, and gas from oil sands, which are categorized as unconventional energy resources. The effectiveness of this separation process is strongly linked to the residence time, which itself is governed by the vessel's internal geometry, including the inlet arrangement, baffles, and weir design. In this study, the inlet device structures of the FWKO were modified to enhance residence time, thereby aiming to increase overall separation performance. Four representative inlet types were defined according to the shape of the deflector that directs the incoming flow. Numerical simulations indicated that separation efficiency varied by as much as 17 percentage points among these configurations. Case B, characterized by a reversed-type inlet, achieved the highest performance with 95.35% efficiency. To further refine this case, the Response Surface Method (RSM) was applied for optimization of the inlet device position. Design of Experiments (DOE) was first conducted, and nine candidate designs were generated through Latin Hypercube Sampling (LHS). Using these data, a predictive model was constructed via RSM and then employed for single-objective optimization. As a result, optimization with the Nonlinear Programming by Quadratic Lagrangian (NLPQL) algorithm improved the separation efficiency by an additional 1.6%p.

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