The Compro deodorizer is a continuous unit operating at 3 mm Hg absolute pressure and at temperatures up to 250 c. It will produce a bland product with residual FFAs of 0.05% or less from well prepared and refined oils or hydrogenated stocks. Free fatty acids, flavour and odour bodies, monoglycerides, sterols, etc. will distill. Due to the very short deodorizing time at elevated temperatures, hydrolysis losses are negligible. Transisomerization and double bond migration is also negligible.
Oil retention time in the tray during normal operation is approximately 30 minutes. The oil passes through the distillation stages in approximately three minutes. The oil is retained at the proper level in the heating and cooling sections by the special overflow weirs.
Oil leaving the deodorizer flows by gravity to the drop tank, where citric acid or other anti oxidants may be added. It is then pumped by the drop tank pump through a heat exchanger to preheat the deaerator feed, then through the after cooler where it is cooled to 40 c, and finally through the polish filters to storage.
