Isohexane has attracted much attention due to its low toxicity, low boiling point and narrow distillation range. Through the application practice of isohexane in 5 000 t/d extruded soybean extracting production line, the changes of crude oil residual solvents, wet meal residual solvents, steam consumption, solvent consumption, nitrogen solubility index of meal and phospholipid content in crude oil were evaluated and compared with the effects of n-hexane. It was found that the crude oil residual solvents, wet meal residual solvents, nitrogen solubility index of meal and phospholipid content in crude oil of extruded soybean extracting production line with isohexane were better than those with n-hexane, and the annual average solvent consumption was the same as that with n-hexane. It was suggested that the promotion and application of isohexane in oil leaching should be strengthened. |