Bleaching
Raising oil to bleacher temperature, and cooling the filtered oil that leaves it.
Recommended type
Standard Gasketed Plate Heat Exchanger
The inlet side is a clean oil duty. What decides the selection is the outlet: bleaching earth carried through a leaking filter will find the narrowest channel in the plant, so the filtration ahead of the exchanger is part of the specification. Where the unit is gasketed, specify Viton: hot oil at bleacher temperature is what a nitrile gasket swells and hardens in, and the replacement interval is the real cost.
