标题：Test study on the influence of parameters of extrusion system on ratio of residual oil of de-hulled rapeseed extrudate
作者：Shen, Dechao ;Sun, Peiling ;Xie, Tiemin ;Liu, Yuanyang
作者机构： Shandong University of Technology, Zibo 255049, China; Northeast Agricultural University, Haerbin 150030, China
来源：Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
摘要：The probability of pretreatment technology of extruding de-hulled rapeseed with solvent extraction of oil was studied. It included rapeseed cleaning, de-hulling, extruding and oil extracting. The influence regularity of parameters of extrusion system of de-hulled rapeseed on observed indices was studied. These parameters included the distance δ between screw end and internal surface of die, the diameter Φ of die nozzle, the barrel temperature T, the screw speed N and the nozzle length L. The observed indices included the ratio of bearing oil of de-hulled rapeseed extrudate, the ratio of de-hulled rapeseed oil extracted from slots of extraction cage and the residual oil ratio of de-hulled rapeseed extrudate. The ranges of optimum values of parameters of extrusion system were put out. They were as follows δ=20-30 mm, Φ=8-12 mm, T=80-100°C, N=20-35 r/min, L=10-30 mm. The test results indicated that if the parameters of extrusion system were selected reasonably, the pretreatment technology of extrusion of de-hulled rapeseed with solvent extraction of oil would be available. Meanwhile the residual oil ratio of de-hulled rapeseed extrudate would be less.