不同型式的搅拌桨在黄原胶溶液中混合性能的研究

Mix Performance of Different Types of Impeller in Xanthan Gum System

以非牛顿假塑性黄原胶溶液为实验物系,采用电导率法测定反应釜内不同型式的搅拌桨的混合时间.采用对取样稀释后黄原胶稀溶液测定电导率来确定混合时间的方法,实验表明,该方法具有良好的重复性,可以用于混合时间测定.根据该方法对不同型式的搅拌桨的混合时间进行测定发现,在相同单位功耗下,最大叶片式桨的混合时间相对较短,在相同混合时间下,组合叶片式桨的单位功耗最大.从搅拌功率、单位功耗、混合时间方面综合比较4种桨型,最大叶片式桨混合效果最好.

This work presents the mixing performance of impeller with different types in non-Newtonian pseudoplastic xanthan gum system. It is found that the mixing time of maxblend impeller is the shortest under the condition of same unit power consumption,and the unit power consumption of combined impeller is the largest at same mixing time. In terms of stirring power,unit power consumption and mixing time of four impellers,for comparison,maxblend impeller has the best mixing effect.