Research and application of twin-screw expeller for cold pressing of de-hulled rapeseed
In order to solve the technical problems of cold pressing of de-hulled double-low rapeseed, a new twin-screw expeller with a principle of combination ofjoggling and non-joggling was designed and manufactured. The pressing chamber had characteristics of multiple-stage compression and relaxation and a thin layer of materials when pressing. Theoretical compressing ratio of the twin-screw expeller is 23.0, and ratio of length and diameter of pressing chamber is 11.5 with a pressing time of 180 seconds. In the twin-screw expeller, materials could be clear intensely so that the problem of de-hulled rapeseed feeding was solved. The twin-screw expeller was applied to cold pressing of de-hulled rapeseed successfully. The oil content of cold pressing cake is reduced to about 15％. Cold pressing oil approaches the standard of the third grade rapeseed pressing oil (Chinese national standard, GB1536-2004). Cold pressing cake temperature is lower than 70℃ which assures good quality of oil and cake.Twin-screw expeller is suitable for pressing de-hulled rapeseed with obvious quality improvement of rapeseed oil and reduction of energy consumption, which can increase processing value of double-low rapeseed.
twin-screw expeller double-low rapeseed de-hulled cold pressing equipment
LI Wenlin HUANG Fenghong GU Qianghua GAN Weirui
Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan 430062, China Wuhan Lianglong Machine Manufacture Co.Ltd, Wuhan 430000, China
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1799-1802
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）