挂面干燥动力学研究

Drying Dynamics of Chinese Dried Noodles

干燥是挂面生产的重要工艺过程。优化干燥工艺是干燥过程研究的重要内容,其理论依据是对挂面干燥动力学的深刻认识。根据挂面干燥工艺目标要求,以可自主设计温度、相对湿度,在线控制干燥条件,监测干燥过程物料水分状态和迁移轨迹的食品水分分析技术平台为工具;采用压延和挤压技术制作挂面样品;基于挂面干燥动力学和热力学的基本概念,用递进思维的方法,研究挂面干燥特性和干燥过程控制技术。系统分析了挂面的干燥特性、热能利用效率、工艺控制技术等;讨论干燥工艺、设备和操作参数的合理性;为干燥过程控制的合理性、智能化以及工业设计提供参考。

Drying process is the critical operation for Chinese dried noodles(CDN)production.Drying dynamics of CDN is the theoretical basis for optimization of operating parameters.According to the requirements of CDN drying process,food moisture analysis platform was used as a key tool,in which temperature and relative humidity could be designed,drying condictiones could be controlled online,and the moisture content,water state,and water mobility could also be monitored.Chinese dried noodles were made by plane rolling or twin-screw extrusion technology.Based on the concepts of drying dynamics and thermodynamics,the progressive thinking method was used to research the characteristics of draying and the control technology of drying process.The present paper analyzed the drying characteristics,thermal energy utilization efficiency,and the process control technology of CDN;discussed the rationality of drying process design,equipment and operating parameters;provided reference for the optimization and intelligent control of the drying process and industrial application.