不同进风方式喷雾干燥过程的CFD模拟研究  

Study on effect of different air flow patterns on spray drying process via CFD modeling

作　　者：李翔宇 杜健军[1,2] 樊江莉 彭孝军[1,2] LI Xiang-yu;DU Jian-jun;FAN Jiang-li;PENG Xiao-jun(State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116024,China;Shenzhen Research Institute,Dalian University of Technology,Shenzhen 518057,China)

机构地区：[1]大连理工大学,精细化工国家重点实验室,辽宁大连116024 [2]大连理工大学深圳研究院,广东深圳518057

出　　处：《现代化工》2020年第1期202-206,共5页Modern Chemical Industry

基　　金：国家自然科学基金项目(21822804);大连市科技重大专项项目(2018ZD14GX002)

摘　　要：根据实验室已有的旋流式干燥塔建立模型并按照相同尺寸建立直流干燥塔模型,对比了2种进风方式的干燥效果。模拟结果表明,旋流式干燥塔的干燥效果要好于直流式干燥塔,但也会有黏壁、过热等现象。因此在实验过程中对于高分子物料干燥时应该有关于干燥气体温度及在颗粒干燥塔内的停留时间的特殊操作要求。There are two different drying air patterns with different spray drying towers:direct flow and swirling flow.Different drying air flow patterns have significantly impact on the result of spray drying.Two models with different air flow patterns are built with same size to investigate the effect of air flow pattern on drying effect.The simulation results show that the drying performance of the swirling drying tower is better than that of the direct flow drying tower.But there also exists problems for the swirling drying tower,like sticking walls and overheating.Therefore,in the process of experiment for drying polymer materials,there shall be special operation requirements for drying gas temperature and residence time in the particle drying tower.

关 键 词：喷雾干燥 计算流体力学 进风方式 温度 

分 类 号：O35[理学—流体力学]