化工学报2017，Vol.68Issue(8)：3071-3081,11.DOI:10.11949/j.issn.0438-1157.20170336
真空法动态制冰的非等温结晶动力学
Non-isothermal crystallization kinetics of dynamic ice slurry production by vacuum method
摘要
Abstract
Ice slurry treated with sodium chloride was produced by vacuum method. The feasibility of describing the crystallization behaviors of ice slurry based on the non-isothermal crystallization kinetic model, Jeziorny and Mo method, was theoretically proved. The relationships between the crystallization time and the ice packing fraction (IPF) were measured and the non-isothermal crystallization kinetic equations were developed. Experimental results indicated that the non-isothermal crystallization kinetics of ice slurry formation fit the Jeziorny and Mo model very well. The values of the Jeziorny exponentn were between 0.473 and 0.525, indicating that the crystallization mechanisms were almost the same for different experimental conditions and the growth pattern of ice crystals was flake thickening. The change trends of the crystallization kinetic parameters,Kc, the crystallization time,t0.25, and the cooling rate function,F(T), revealed that high cooling rate was beneficial to promote the formation of ice slurry and sodium chloride inhibited the growth of ice crystals.关键词
冰浆/结晶/动力学/真空制冰/动力学模型Key words
ice slurry/crystallization/kinetics/vacuum ice/kinetic modeling分类
能源科技引用本文复制引用
刘曦,庄焜煜,黄成,李学来..真空法动态制冰的非等温结晶动力学[J].化工学报,2017,68(8):3071-3081,11.基金项目
国家基础科学人才培养基金项目(J1103303) （J1103303）
福建省中青年教师教育科研项目(JA14053). supported by the National Natural Science Foundation of China (J1103303) and the Program of Young Teacher Education and Research of Fujian Province(JA14053). （JA14053）
