Parallel plate interceptor

Plate coalescers. Various configurations of plate coalescers have been devised. These are commonly called parallel-plate interceptors (PPI), corrugated-plate interceptors (CPI) or cross-flow separators. All of these coalescers depend on gravity separation to allow oil droplets to rise to a plate sur-... 

Parallel-plate interceptor. The first form of plate coalescer was the parallel-plate interceptor (PPI). This involved installing a series of plates parallel to the longitudinal axis of an API separator (a horizontal, rectangular cross-section skimmer). When viewed perpendicular to the axis of flow, the plates form a "V so that the oil sheet migrates up the underside of the coalescing plate and to the sides Sediments migrate toward the middle and down to the bottom of the separator where they are removed. 

Corrugated-plate interceptor. The most common form of parallel-plate interceptor used offshore is the corrugated-... 

Initial developments in this area consisted ot a series of parallel flat plates called parallel plate interceptors (PPI) which were installed at an angle of 45° to the direction of flow in an API separator. 

The principle of separating oils by means of plates has been applied for some time and PPI oil separators (Parallel Plate Interceptors) were developed as far back as the 1950s by the Shell Group. 

Plate coalescence Parallel plate interceptors Corrugated plate interceptors Cross-flow separators Mixed-flow separators 30-50... 

Parallel plate interceptors, such as CPIs (corrugated plate interceptors) and cross-flow separators, can be effective at removing suspended solids from water. However, the solids tend to cling to the plates and plug the plate pack. For this reason, parallel plate interceptors are not normally used to remove large quantities of solids from water. 

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