OPTIMIZATION OF PRODUCTION PROCESS OF SOYA OIL.

Modern processing plants extract soya beans oil by solvent liquid transfer. Soya beans are cleaned, cracked, de hulled and conditioned into a thin flake before they enter the extractor. Extraction is by successive, counter current washes with hexane solvent. The extracted flakes are then carried by a sealed conveyor to be de solvent in enclosed vessels by application of jacket and spurge steam. Hexane is removed from the oil in rising film evaporators and with final vacuum distillation. Hexane is recovered from the meal and the oil in atmospheric condensers. Parameters of the process in the plant are no. of part of seed, thickness of flake and weight of solvent per ton of soya beans. Oil quality is measured in terms of free fatty acids, absence of residual hexane and crude oil.