oil refineries in mexico 1,Flow chart Rude oil-Neutralize-Decolorize-Deodorize-Cool-Edible 2, ... heat to 105 degrees orso , to mix then dehydrate for 1 hour ,also directly is pumped into decolorizer vessel for dry ... degrees,then mixing for 30 mins,to reduce water to 0.1% ,then put a little clay (decoloring media) 2-4 % of ...