Refinery

Crude oil obtained from solvent extraction process is refined in 100 TPD refinery which is provided by Chempro Technovation Pvt Ltd based in Ahemedabad, Gujarat which is specialized in refining cottonseed oil in continuous process.
The refinery is designed to refine the crude oil in its worst condition, at lowest losses as possible.
Soap and gums are separated by high quality separators provided by GEA WESTFALIA for removing FFA at it’s lowest.
The Bleacher and Deodorisatior are designed by Chempro Technovation Pvt Ltd themselves to obtain the best quality oil of about 1-2 unit color.

Process	Purpose	Procedure and Chemical Reaction	Remarks
Alkali Refining	Removes free fatty acids, glycerol, carbohydrates, resins, metals, phosphatides and protein meal.	The oil and alkali are mixed allowing free fatty acids and alkali to form a soap. The resulting soap stock is removed through centrifuging Cottonseed oil is also refined using a process called miscella refining.	The oil produced thus has a lighter, more desirable colour.
Bleaching	Eliminates trace metals and other colour bodies.	Bleaching clays are used, which adsorb the impurities.	Bleached oils are nearly colourless and have a peroxide value of near zero.
Winterisation	Cottonseed oil destined to be used as salad oil is winterised so that it will not become cloudy when chilled.	Oil is chilled with gentle agitation, which causes higher melting fractions to precipitate. The fraction which settles out is called stearin.
Hydrogenation	Hydrogenation produces oil with the mouth feel, stability, melting point and lubricating qualities necessary to meet the needs of manufacturers.	Treatment of oil with hydrogen gas in the presence of a catalyst results in the addition of hydrogen to the carbon-carbon double bond.	It is a selective process that can be collntolled to produce various levels of hardening, from very slight to almost solid.
Deodorization	It removes volatile compounds from the oil, the end product is a bland oil with a low level of free fatty acids and a zero peroxide value. This step als removes any residual pesticides or metabolites that might be present.	Deodorization is a steam distillation process carried out under a vacuum. Cottonseed oil as it can be deodorized at lower temperatures, which results in more tocopherols (natural antioxidants) being retained.	Deodorization produces some of the purest food products available to consumers. Few other products are so thoroughly clean as refined, bleached and deodorized oil.
Interesterification	To rearrange or redistribute fatty acids on the glycerol backbone It can improve the functional properties of the oil.	This is most often accomplished by catalytic methods at low temperatures. The oil is heated, agitated and mixed with the catalyst at 90°C. There also are enzymatic systems which may be used for interesterification.	It does not change the degree of saturation or isomeric state of the fatty acids.