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  • processing high oil content seeds in continuous srew press
  • processing high oil content seeds in continuous srew press
  • processing high oil content seeds in continuous srew press
  • processing high oil content seeds in continuous srew press

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  • Can oil seeds be mechanically expressed in a screw press?
  • This work studies oil seeds mechanical expression in a screw press. For this purpose, a pilot-scale screw press (0–40 kg/h) was instrumented by installing sixteen pressure sensors and three temperature probes throughout the screw. Canola (Brassica napus L) and flax (Linum usitatissimum) seeds were used for investigation.
  • How does a screw press compress seeds?
  • The compression of seeds needed for oil expression is achieved by progressive volume reduction in a screw press (Ward, 1984). The results of this work revealed the presence of different internal phenomena induced in a screw press (seeds transport, compression, relaxation and mixing, oil reflux) during continuous pressing.
  • Does a screw press affect oilseed expression behavior?
  • Oilseeds expression behavior in a screw press was studied. A pilot screw press (0–40 kg/h) was instrumented. The pressure, temperature and residual oil profiles were experimentally determined. The screw press performances were strongly dependent on the screw rotation speed.
  • Does a screw press affect oil yield?
  • In these experiments, the performance of the screw press (oil yield) followed a second order decreasing polynomial function of seed moisture content (Singh et al. 2002). The moisture content of seeds during the pressing process also affects the quality of oil.
  • What is industrial pressing of oilseeds?
  • Industrial pressing of oilseeds is realized using continuous screw presses. The presses are fed with crude or pre-treated seeds. Types of pre-treatments (thermal pre-treatment, size reduction, mechanical sieving, etc.) differ for various seed species (Carr 1997). Each type of seed pre-treatment provides its own advantages.
  • What is the residual oil content in a screw press?
  • In industrial screw presses, the press cake residual oil content is about 10–12%. In order to characterize the matter flow in the press, the local matter velocity distribution was studied as described in the experimental methodology of Fig. 3.