文献类型：期刊文献

中文题名：基于Weibull分布函数的不同等级当归低温回潮干燥特性研究

英文题名：Study on low temperature moisture regain drying characteristics of different grades of Angelicae Sinensis Radix based on Weibull distribution function

作者：李波[1,2,3];强正泽[1];何军刚[1];张军文[4];李成义[1];郑贵森[1]

第一作者：李波

机构：[1]甘肃中医药大学,甘肃兰州730000;[2]兰州市肺科医院,甘肃兰州730000;[3]甘肃天士力中天药业有限责任公司研发中心,甘肃兰州730000;[4]甘肃奥凯农产品干燥装备工程研究院有限公司,甘肃兰州730000

第一机构：甘肃中医药大学

年份：2019

卷号：44

期号：18

起止页码：4009

中文期刊名：中国中药杂志

外文期刊名：China Journal of Chinese Materia Medica

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；PubMed;

基金：国家中药标准化项目(ZYBZH-Y-GS-11);甘肃省重点研发计划项目(18YF1FA085);兰州市人才创新创业项目(2017-RC-19)

语种：中文

中文关键词：当归;干燥;等级;低温;回潮;Weibull分布

外文关键词：Angelicae Sinensis Radix;drying;grade;low temperature;moisture regain;Weibull distribution

摘要：基于Weibull分布函数模拟不同等级当归在低温及回潮条件下的干燥过程,以期明确不同等级当归低温回潮干燥特性及等级与干燥条件对其干燥过程的影响。研究结果表明,Weibull函数可较好模拟不同等级当归低温回潮干燥过程,且干燥温度越低,当归等级越小,函数模型越理想。等级与干燥温度对当归低温回潮干燥过程影响显著,且温度对当归相对回潮速率影响大于等级,不同等级当归在40℃条件下的相对回潮速率高于55℃,当归在40℃条件下相对回潮速率一等>二等>三等,回潮干燥完成后,40℃回潮干燥水分比低于55℃回潮干燥;等级对当归低温回潮干燥水分有效扩散系数影响大于温度,不同等级当归在40℃和55℃回潮干燥条件下,水分有效扩散系数分别在2.9416×10^-6~7.9915×10^-6和3.0938×10^-6~8.4838×10^-6,且相同温度条件下,水分有效扩散系数一等>二等>三等。因此采用Weibull函数研究和模拟不同等级当归在低温回潮条件下的干燥特性,可为当归传统干燥技术的提升和不同规格或等级当归的干燥工艺优化提供实验依据。
The drying process of different grades of Angelicae Sinensis Radix under low temperature and resurgence conditions was simulated based on the Weibull distribution function,in order to clarify the low-temperature moisture regain drying characteristics of different grades of Angelicae Sinensis Radix,and explore the effect of grade and drying conditions on the drying process of Angelicae Sinensis Radix.Research results indicated that the Weibull function can be used to simulate different grades of Angelicae Sinensis Radix low-temperature moisture regain drying process,and the lower the drying temperature,the smaller the grade,and the better the simulation effect.The grade and drying temperature showed a significant effect on the low-temperature moisture regain drying process of Angelicae Sinensis Radix,and the effect of temperature on the relative moisture regain rate of Angelicae Sinensis Radix was greater than the grade.The relative moisture regain rate of different grades of Angelicae Sinensis Radix at 40℃was higher than 55℃,and the relative moisture regain rate at 40℃was first class>second class>third class.After drying,the moisture ratio at 40℃was lower than that at 55℃;the effect of the grade on the effective diffusion coefficient of dry water was greater than the temperature.Under different conditions of 40℃and 55℃moisture regain,the effective diffusion coefficient of water was between 2.9416×10^-6-7.9915×10^-6 and3.0938×10^-6-8.4838×10^-6 for different grades.Under the same temperature conditions,the effective diffusion coefficient of water was first class>second class>third class.Therefore,Weibull function can be used to study and simulate the drying characteristics of different grades of Angelicae Sinensis Radix under low-temperature moisture regain conditions,providing experimental basis for the improvement of traditional drying technology of Angelicae Sinensis Radix and the optimization of drying process of different specifications or grades of Angelicae Sinensis Radix.