Mechanical vegetable oil extraction contains grinding, cooking, expelling and pressing, and chemical extraction is solvent extraction process. Now you can see the oil procedure of vegetable oil plant.
Process Actions of Vegetable Oil Plant
1. CRUDE OIL STORAGE - WITH FOOTS. (Foots imply the solid fragments of crushed seeds that pass via the filter.) In order to keep the foots in suspension and make sure a uniform feed to down-stream equipment, the tanks will probably be equipped with side entry mixers. Mixer selections are given in Table I. Heating pipes and tanks are frequently built with each other. Agitation beneath these pipes will probably be reduced, resulting in solids settling and the need for periodic cleaning.
2. Edible oil refinery comes because the next. BATCH REFINING treat the oil having a 20% caustic answer for the fatty acids reaction. The reaction results in the formation of soft soaps which will be decanted off. Emulsification and long separation times are the result of over agitation. Select from gear drive transportable mixers at 1 HP/1000 gallons and small top entry mixers at 0,six HP/1000 gallons. Some refining is carried out in continuous "packaged" systems built by suppliers of continuous separations equipment.
four. Oils are sometimes blended prior to further processing. BLEND the oil in little tanks with transportable mixers at 0.three - 0.four HP/1000 gallons for 20 - 30 minute. Bigger tanks will use side entry mixers at 0.two - 0.3 HP/1000 gallons.
five. Intensive mix the refined oil with 0.5 -2.0% bleaching clay for BLEACHING. Select 2 - 3 HP/1000 gallons with top entry mixers utilizing radial turbines or 4 HP/1000 gallons with side entry mixers.
six. Oils are modified by HYDROGENATION to cut back the degree of un-saturation, raise the melting range, improve color and flavor and improve the resistance to oxidation. People used "Iodine Value" for measure unsaturation historically. Chromatography is gradually replacing I.V. as an analytical tool.