The customary bleaching system is predicated on the utilization of 2 filters of that one is on line whereas the opposite is being cleansed and ready for ensuing cycle. once a filter has reached its most capability, as indicated by high feed pressure, it's started out line for cleanup and replaced by the opposite filter.
The cleanup procedure begins by initial pressurizing the filter with steam to expel resid into the Recovered Oil Tank and dry the spent filter cake. The oil recovered from the filter cake is collected within the tank and might typically be recycled to the worker. when drying, a bottom discharge valve on the filter is opened and also the leaves pneumatically vibrated so the spent cake is dislodged and discharged via a hopper.