ScholarWorks@성균관대학교

초록

Oil, water, and gas are separated from oil sands, one of the unconventional energy resources, using a device called Free Water Knock Out (FWKO) vessel. At this time, the separation efficiency is influenced by the residence time, which is in turn affected by the geometrical shapes and structure such as inlet devices, baffles, and weir in the FWKO. The inlet configurations of the FWKO vessel were changed to optimized the residence time with the goal of improving the separation efficiency. The inlet device configurations are classified into four different types based on the shape of the deflector that controls the inlet flow. Numerical analysis results showed that there was a 21%p difference in separation efficiency depending on the variation in inlet configurations. For Case B (reversed type), which demonstrated the highest separation efficiency of 95.35%, the inlet device location optimization design was performed based on the Response Surface Method (RSM) technique. Initially, Design of Experiments (DOE) was conducted, and nine design points were derived using the Latin Hypercube Sampling (LHS) technique. Subsequent to this, the accuracy of the prediction model was ensured through the RSM, accompanied by single-objective optimization. Consequently, it was confirmed that the separation efficiency was improved by approximately 1.6% p through the optimal design of the inlet device by applying the Nonlinear Programming by Quadratic Lagrange (NLPQL) as an optimization algorithm.

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