Extraction of oil from rapeseed using duo screw press
¹Czech University of Life Sciences Prague, Faculty of Engineering, Department of Mechanical Engineering, Kamýcká 129, CZ165 21 Praha 6 Suchdol, Czech Republic
²Czech University of Life Sciences Prague, Faculty of Engineering, Department of Material Science and Manufacturing Technology, Kamýcká 129, CZ165 21 Praha 6 Suchdol, Czech Republic
This study was focused on the analysis of optimize the pressing process of rapeseeds (Brassica napus L.) using screw press. For pressing of oil a screw press Farmer 20 – duo (Farmer 20, Farmet a.s., Ceska Skalice, Czech republic) was used. The screw rotation speed 10, 20, 30, 40, 55 and 65 rpm was used. Oil recovery efficiency and specific mechanical energy were decreased when the seed material throughput was increased. It has been found that the optimal operation point for screw press Farmer 20 – duo was at 20 kg h-1 rapeseed throughput. The specific mechanical energy at the optimal operation point was 0.61 kWh kgoil-1 Maximum oil recovery efficiency 82.6% was found at the lowest screw speed.