药粉颗粒床层特性对渗漉压降的影响  

The influence of medicine powder layer characteristics on percolation pressure drop

作　　者：李娟[1] 汤添钧 汤为民 孙志高[1] LI Juan TANG Tianjun TANG Weimin SUN Zhigao(l.School of Mathematics and Physics,SUST , Suzhou 215009,China Jiangsu 707 Natural Pharmaceutical Co., Ltd.,Zhenjiang 212002, China)

机构地区：[1]苏州科技大学环境科学与工程学院,江苏苏州215009 [2]江苏七0七天然制药有限公司,江苏镇江212002

出　　处：《苏州科技大学学报（自然科学版）》2017年第2期38-42,共5页Journal of Suzhou University of Science and Technology（Natural Science Edition）

基　　金：江苏省自然科学基金资助项目(BK2012602)

摘　　要：针对筋骨疼痛酒中药处方的渗漉过程,研究药粉颗粒床层特性对于渗漉压降的影响。利用不同级别的筛网对于500 g 24目和100目药粉颗粒分别进行筛分,测定颗粒平均粒径、形状系数与比表面积。在五种不同堆高下测量颗粒床层孔隙率。选择乙醇溶液作为溶剂实施渗漉,并基于Carman-Kozeny公式计算渗漉压降。结果表明,药粉越细、堆高越小,颗粒床层孔隙率越大;在相同堆高下,细粉颗粒床层的孔隙率与比表面积均高于粗粉颗粒床层,导致渗漉压降较高。Influence of medicine powder layer characteristics on percolation pressure drop was investigated for the percolation process of traditional Chinese medicine prescriptions of bone and muscle wine. Various levels of screens were used to sieve 500 g 24- mesh and 100- mesh medicine powder respectively, so as to measure average particle diameter, shape factor and specific surface area. The porosity of these two kinds of particle layers was measured under different layer height. Alcohol solution was selected as solvent during percolation, and the perco-lation pressure drop was calculated based on Carman -Kozeny equation. The results show that the finer the medicine powder,the smaller the particle layer height, the bigger the particle layer porosity. Under the same par-ticle layer height,both the porosity and the specific surface area of 100- mesh fine particle layer are higher than those of coarse particle layer,which results in higher percolation pressure drop.

关 键 词：渗漉 压降 中药药粉 颗粒床层 

分 类 号：TQ028.8[化学工程]