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Title : Efficiency of pressing oil from rape seeds
Key words : rape oil, pressing, initial processing, solvent, methanol
Summary :

The objective of the research carried out within the paper was to determine efficiency of pressing oil from rape seeds with the use of saturation with organic solvent. The scope of the paper covered an initial processing of the material and the pressing process with the use of a one - screw press along with testing the amount of oil which was formed in the time and electric energy units necessary for pressing it. Four rotational speeds of the press screw were applied: 20, 30, 40, 50 rotations·min-1 and three diameters of the outlet nozzle: 6, 8, 10 mm. Rape seeds were saturated with solvent (24 hours before pressing) - methyl alcohol (methanol) in the mass proportion 1:40 and 1:20. The highest efficiency of pressing was 6.3 (kg of oil)·h-1 at 6 mm diameter of the nozzle and 50 rotations·min-1 for rape saturated with methanol in the 1:20 proportion. The biggest oil mass to pomace mass ratio – 0.624 and 0.610 (kg of oil)·kg of pomace-1 at 6 mm diameter, 20 and 30 rotations·min-1 for rape with methanol 1:20. The lowest energy consumption of the process – 0.1051 and 0.1054 kWh·(kg of oil-1) at 10 mm diameter and 50 rotations·min-1 which corresponds to the highest energy efficiency – 9.515 and 9.487 (kg of oil)·kWh-1.

Please use the following format to cite the selected article : Zdanowska, P., Florczak, I., Wojdalski, J., Klimkiewicz, M., Dróżdż, B., Mruk, R. (2013). Efficiency of pressing oil from rape seeds. Inzynieria Rolnicza, 1(141), 287-293.
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