Sunflower / Soyabean Oil is degummed using Phosphoric Acid / Water in two Sharples Centrifuges. The Degummed Sunflower Oil is chilled to 80 C using Propylene Glycol in Thermax Wapour Absorption Heat Pump. This is followed by a combined step of Dewaxing and Neutralisation using Sodium Hydroxide solution in a set of 3 Sharples Centrifuges. The resulting oil is washed with hot water twice for effective removal of traces of soap. Now this neutral oil is mixed with indigenous as well as imported Bleaching Earth and bleached in a continuous Bleacher followed by filteration in Pressure Leaf Filters. This oil is finally De-odourised at 250 Deg. Cen. under pressure of 2 mm absolute in a Stainless Steel Horizontal continous Deodouriser. Finally, it is cooled to ambient conditions and passed through series of Polish Filters and admitted with permitted antioxidents to extend its shelf life. Now it is fit for packing in consumer packs. The Soapstock received from nuetralisation stage is acidulated to recover Acid Oil.
The process parameters like pressure, vacuum, temperature and flow are monitored by instrumentation and connected to P.C. for record follow up.