Optimal Design of Inlet Component of Gravity Oil/Water Separator by CFD and Response Surface Method

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Abstract

A decrease in the relative unevenness (M_f) of axial liquid velocity can improve the coalescence performance and separation efficiency in the gravity oil/water separator with coalescence component. A modified inlet component with round orifices was adopted, and the coalescence component with parallel plates was installed at 150 mm from the inlet. CFD simulation coupled with the Box-Benhnken design and response surface method was used to obtain the optimal combination of three main geometrical parameters for the lowest M_f on the cross section at the beginning of the coalescence component. Simulated results showed that there were interactions among the influences in M_f caused by these three parameters, that is, the ratio (P₁) of total round orifices area on the inlet to the cross section area, the orifices area ratio (P₂) of hemispherical seal head to cylindrical side face, the ratio (P₃) of distance (l₁) between side face orifices and head seam to the cross section diameter (D); M_f had a minimum value being almost 0.58 for an optimal combination of P₁, P₂, P₃ being 0.03, 0.1 and 0.036, respectively.

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	Articles by authors
	Jiang Chaoyang
	Qiao Shengchao
	Wang Rijie
	Yang Xiaoxia

Keywords： gravity oil/water separator； CFD simulation； inlet distributor with round orifices； response surface method； relative axial velocity unevenness

Received 2014-08-31;

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Jiang Chaoyang, Qiao Shengchao, Wang Rijie, Yang Xiaoxia.Optimal Design of Inlet Component of Gravity Oil/Water Separator by CFD and Response Surface Method[J] Chemcial Industry and Engineering, 2016,V33(5): 79-85

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