When talking about dewatering the WVO, what hydrogenated oils. I have about 100 gal of "creamy" fryer oil to deal with?
In theory, the dewatering procedure is the same:
- pre-filter to remove debris which holds onto water
- heat to about 100ºF
- allow to settle
In practice the "creamy" VO is harder to deal with because it needs to be heated before the "pre-filter" step. As long as your entire system has heat supplied from pre-filter to the injector, then it behaves the same as the non creamy variety. If you don't have adequate heat on the filters then the creamy oil plugs things up.
After my dewater tank, I pump through a filter before filling the tank on my generator. That filter is not heated or insulated. In the winter if I am running the creamy oil, the filter nearly frozen solid after sitting overnight. I have to open the drain on the bottom of the filter and pump warm oil through the filter to thaw it out so I can fill the tank.
About a third of my oil is "creamy". During the winter, I save it up for warm weather processing and use.