摘要
研制一种新型结构的冷冻浓缩装置,可克服传统界面渐进冷冻浓缩溶质夹带率较高的缺点,且装置的料液处理量适应性好、参数调控方便、无易磨损件.建立了套管式冷冻浓缩装置的数学模型,通过控制温度、流速,对不同工况下结冰速度随料液温度、载能液温度和冰层厚度的变化规律进行了计算分析.研制了R134a套管式冷冻浓缩实验装置,对其工作特性进行了实验研究.结果表明:通过控制料液浓度、料液流速和冰层厚度,可降低溶质夹带率.
A new type of refrigerating concentrator was developed,which has the advantages of good adaptability,convenient parameter regulation and no easy wear.The mathematical model of the casing freezing concentrator was established.Under different working conditions,the changes of the freezing velocity with the temperature of the feed liquid,the temperature of the carrier fliud and the thickness of the ice layer were calculated and analyzed by controlling the temperature and the flow rate.The R134a casing freezing experimental device was established,and its working characteristics were studied.The results showed that the rate of solute entrainment could be reduced by controlling the liquid concentration,the liquid flow rate and the thickness of the ice.
作者
李银星
陈东
尹龙升
谢继红
LI Yinxing;CHEN Dong;YIN Longsheng;XIE Jihong(College of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin 300222,China)
出处
《天津科技大学学报》
CAS
2018年第6期53-57,共5页
Journal of Tianjin University of Science & Technology
基金
国家自然科学基金资助项目(21576004)
关键词
冷冻浓缩
界面渐进
套管式
溶质夹带
freezing concentration
interface progression
casing type
solute entrainment
