Rapeseed Purification Method Using a Belt-type Soybean-sorter

Rapeseed oil is useful as diesel fuel. However, higher contents of P, Ca and Mg in the oil are known to cause trouble in engines. This report describes a method to reduce S, P, Ca, Mg and ash contents during bulk grain purification using a belt-type soybean-sorter. Rapeseed grain samples were harvested and dried to less than 8.0% using a circulating dryer. Furthermore, purification with the belt-type sorter was held with the capacity 50 kg/h, which is almost one-tenth the capacity of soybean purification. The purified grain and removed grains were processed with a cold press. Then oil properties were examined on the DIN V 51605. Oil of purified grains has lower contents of S, P, Ca, Mg, and ash than that produced using removed damaged grains. The oil of purified grains still has high values of P, Ca and Mg content as diesel fuel. However, grain purification seems to be useful to improve the total process to reduce the undesired oil contents. The belt-type soybean sorter improves the rapeseed oil fuel quality, reducing the S, P, Ca, Mg and ash contents, by removing the damaged or sprouting grain.
Proceedings of the 21st European Biomass Conference and Exhibition, 3-7 June 2013, Copenhagen, Denmark, pp. 378-380