Oils systems coalescing plate separators

Because of the coalescing action, these separators can separate oil droplets as small as 0.006 mm (6 microns) in diameter and produce effluent-free oil concentrations as low as 10 mg/L [27], There is a broad range of applications for tilted-plate separators. As little space is required, they can be installed to polish the effluent from existing API separators that are either overloaded or improperly designed, or they can be installed parallel with existing separators, reducing the hydraulic load and enhancing the oil removal capacity of the system. 

A skim pile is a type of disposal pile. As shown in Fig. 9, flow through a scries of baffle plates creates quiescent wines that reduce the distance which a given oil droplet must rise to be separated from the main flow. Once in the quiescent zone, there is ample time for coalescence and gravity separation. Larger droplets then migrate up the underside of the baffle to an oil collection system... 

Figure 183. Drums with coalescers for assisting in the separation of small amounts of entrained liquid, (a) A liquid-liquid separating drum equipped with a coalescer for the removal of small amounts of dispersed phase. In water-hydrocarbon systems, the pot may be designed for 0.5 ft/sec (Facet Enterprises, Industrial Division), (b) An oil-water separator with corrugated plate coalescers (General Electric Co.).

The key feature of tramp oil separation is to allow enough time for the oil droplets to coalesce, or to provide surfaces upon which the oil settles. This is done on the porous media of 2, or within the tubes or between the plates of 3. A typical schematic of a tramp oil removal system is shown in Figure 4.43. 

---