动态膜过滤对黄原胶浓缩的应用研究  

A study on the concentration of xanthan gum by rotating dynamic membrane filtration

作　　者：王晓静[1] 李世强[1] 李晓波[1] 孙志民[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《膜科学与技术》2004年第4期40-43,47,共5页Membrane Science and Technology

摘　　要：以高黏且具有触变性的黄原胶发酵液为实验物料,研究了旋叶动态膜分离脱水浓缩过程中黄原胶浓度、叶轮转速、操作温度和压力对膜通量的影响.通过对物料黏度和过滤阻力的试验研究与分析,得出了膜通量的计算模型.实验表明:在高黏度且具有触变性物系的膜操作中,提高流体剪切强度至关重要.The ferment liquid of Xanthan gum is high viscosity and thixotropic.In dynamic membrane filtration process of this kinds of materials,the consistency,the rotating speed of impeller,operation temperature and pressure were important factors which affect flux of membrane.A calculate model of the membrane flux is conˉcluded by analyzing and studying the materiel viscosity and filtration resistance.The results show that,it is the most important to increase shear strength of the fluid when filtrating the substance with high viscosity and thixotropic characteristic.

关 键 词：动态膜 过滤 黄原胶 浓缩 应用 高黏度 分离 

分 类 号：TQ028.8[化学工程]