Main Features: High production automation, good quality of finished oil, suitable for processing large volumes of oils such as soybean oil, rapeseed oil, cottonseed oil, sunflower oil, lard, and beef tallow with a daily capacity of more than 100 tons.

Process Flow:

Main Equipment: Centrifuge, De-coloring Tower, De-odorizing Tower, Leaf Filter, Four-stage Steam Jet Pump, Water Jet Pump

Crude oil first passes through a crude oil filter to remove impurities, then is preheated and sent to a mixer to be mixed with phosphoric acid. It then enters a mixed tank for acid refining, followed by a mixer where it is combined with alkali solution. After a retention period in the alkali refining retention tank, the soap stock is separated using a centrifuge. The oil is heated in a plate heat exchanger and pumped into a centrifugal mixer where it is mixed with alkali solution. It then enters a re-refining mix tank and is saponified before being separated into soap stock in a disc centrifuge. The oil is washed in a water washing centrifugal mixer with hot water, and then separated into residual soap and water in a dewatering disc centrifuge. The alkali-refined oil is dried in a vacuum dryer and then heated in a plate heat exchanger before entering the Hongyang brand continuous de-coloring tower where it is mixed with activated clay for de-coloring. The de-colored oil is pumped into a leaf filter for filtration and then into a safety filter. The de-colored oil is pumped into an air-removing vessel to remove air, then into a heat exchanger for heat exchange with de-odorizing oil. After heating in a heat transfer oil heater, it enters the de-odorizing tower. The de-odorizing oil is pumped from the bottom and heat exchanged with the de-odorizing oil in a heat exchanger, and then cooled to obtain the finished oil. Oils such as soybean oil, corn oil, peanut oil, and rice bran oil contain a small amount of fat (wax), which requires de-fatting (de-waxing).