Plate pack Liquid-Liquid coalesce is one of the most widely used separators in oil, gas and petrochemical industry. These type of separators are consisting of sloped parallel plates with the same interval. This type of internals leads to increased efficiency of Liquid-Liquid gravity separators. These plates provide the condition for droplets of dispersed phase to place on the plates and coalesce with each other and form larger droplets and to be easily separated from continues phase. The slope of plates causes the phase to move toward the boundary between them. The flow regime between plates is necessarily laminar to provide good separation. The slope and distance between plates is determined by their design. Usually, the angle of sloped plates is 45 to 60 degrees and their spacing can vary from 10 to 100 mm.