Ice Slurry Formation in a Cocurrent Liquid-Liquid Flow  

作　　者：彭正标 袁竹林 梁坤峰 蔡杰 

机构地区：[1]School of Energy and Environment, Southeast University, Nanjing 210096, China

出　　处：《Chinese Journal of Chemical Engineering》2008年第4期552-557,共6页中国化学工程学报（英文版）

基　　金：the Specialized Research Fund for the Doctoral Program of Higher Education of China(20060286034)

摘　　要：A new technique for ice slurry production was explored. Multiple small water-drops were formed in another immiscible chilled liquid by a single-nozzled atomizer and frozen in the fluidized bed by direct contact heat transfer. Experiments were conducted to investigate the dynamic behaviors of the ice crystal making system. The results demonstrate that the ice crystals could be produced continuously and stably in the vertical bed with the circulating coolant of initial temperature below -5℃. The size distribution of the ice crystals appears non-uniform, but is more similar and more uniform at lower oil flow rate. The mean ice crystal size rests seriously with the jet velocity and the oil flow rate. It decreases with decreasing the oil flow rate, and reaches the maximum at an intermediate jet velocity at about 16.5 m.s y. The ice crystal size is also closely related to the phenomenon of drop-coalescing, which can be alleviated considerably by reducing the flow rate or lowering the temperature of the carrier oil. However, optimization of liquid-liquid atomization is a more effective approach to produce fine ice crystals of desired size.为冰泥浆生产的一种新技术被探索。多重小水滴被单个嘴的 atomizer 在另一不能混合的 chilled 液体形成并且由直接接触热转移在使流体化的床上结冰。实验被进行调查做系统的冰水晶的动态行为。结果证明冰晶体能与下面的起始的温度的传播冷却剂在垂直的床上连续地并且稳定地被生产 ? 5 掳 C。冰晶体的尺寸分发显得不一致，但是以更低的油流动率更类似、更一致。吝啬的冰水晶尺寸由喷气速度和油流动率严重承担。它与减少减少油流动率，和活动范围在在大约 16.5 m 路 s 的中间的喷气速度的最大值 ? 1。冰水晶尺寸也是仔细与现象有关联合落下，它能被减少流动率或降低搬运人油的温度更加减轻。然而，液体液体粉碎成原子的优化是一条更有效的途径生产需要的尺寸的好冰晶体。

关 键 词：ice slurry drop-coalescing ice crystal size distribution liquid-liquid atomization 

分 类 号：O6[理学—化学]