Sizing of Horizontal 3 Phase Separator with Weir Using Matlab and Studying the Variation in Its Length and Diameter with Change in Different Parameters and Optimizing the Cost.

A Horizontal 3 phase separator with wire is designed. Sutton correlations(1985) are used for calculating critical parameters. Vanderwall's Equation is used to calculate the gas deviation factor. K factor and Ks values are calculated from Monnery and Svreck standard(1994). Vapor velocity is taken as 0.75 times of terminal velocity. L/D ratio guidelines of Monnery and Svreck(1994) are followed. Segmental area correlations are used for calculating areas of different sections respectively. Variation in Length and Diameter of the separator is studied in the 3D surface colour plot and line plots with variation in Operating Pressure, Volumetric flow rate, the fraction of volume occupied by Holdup and Surge, densities, viscosities, and other parameters. Studies are done at both high and low pressure. Finally, the cost is predicted depending upon the input variables and final Length and Diameter of the Separator. With an increase in the fraction of holdup and surge, the requirement of length is increasing and the diameter is decreasing for which optimum values are suggested for an efficient process at minimum cost. Increasing trends of size are observed for increasing volumetric flow rate and Operating Pressure. The effect of small temperature changes is found to be very negligible. Finally suggestion for type of horizontal separator is given with respect to criteria of Selection of Horizontal Separator Heads (Monnery and
Svrcek, 1994).