棉籽粕双螺杆挤压脱毒中几个工艺参数的研究

利用自行开发的双螺杆食品挤压机对棉籽粕进行挤压脱棉酚试验，考察了含水率、螺杆转速和喂料速度等参数对脱毒效果与挤出产量的影响。实验中采用响应表面法进行实验方案设计和数据分析。结果表明：减低含水率、喂料速度，提高螺杆转速可使脱毒效果改善。喂料速度是影响挤出产量的主要因素。喂料速度越大，产量越大，因而实际中脱毒效果与产量间存在如何均衡的问题。文中相应给出了本实验条件下的几个响应模型，用以评价各加工变量的影响。实验结果还表明本研究所用的双螺杆挤压机的结构参数在棉籽粕挤压脱毒方面是卓有成效的。

Effects of Several Extruding Parameters on Cottonseed Meal De-gossypol Process by Twin-Screw Extrusion

Effects of varying screw speed, moisture content and feed rate on cottonseed meal de-gossypol result were studied using a twin-screw extruder and Response Surface Methodology (RSM) was utilized to carry out the experiment design and data processing. Experimental results indicated that decreases in moisture content and feed rate, and increases in screw speed improved the de-gossypol results. Feed rate exerted the main effect on the throughput. Larger feed rate would lead to larger throughput, and thus there existed a tradeoff between a good de-gossypol result and high throughput obtained. Several response models were also put forward to approximately evaluate the influence of different processing variables. In addition, a satisfying de-gossypol result was also presented by the screw configuration used in this paper.