化工进展Issue(1)：49-53,5.DOI:10.16085/j.issn.1000-6613.2015.01.008
盐水液滴降压蒸发析盐过程数值模拟
Modeling of salt crystallization process of saline droplet during depressurization
摘要
Abstract
The evaporation process of brine solution under reduced pressure is widely used in areas such as desalination and industrial salting,so it is meaningful to study the evaporation characteristics of a saline droplet during depressurization,which can effectively solve water shortage in China. This work studied the salting process of brine droplet evaporation under reduced pressure by numerical simulation,and obtained the variations of droplet temperature and salting quality with time. The working fluid was saturated brine,the initial temperatures of drops were 20℃,15℃ and 10℃respectively,and the environmental pressure changed from 0.1MPa to 2000—10000Pa. Comparing numerical results with experimental data,the validity of this model was achieved. Through numerical calculations,the main factors affecting salting rate and droplet temperature variation were analyzed. With a larger droplet diameter,salting rate during evaporation was higher,but temperature change was slower. While with faster pressure dropping rate,droplet evaporation rate would be faster,salting rate would be faster,and also droplet temperature would change faster. With a higher droplet initial temperature,evaporation rate would be higher,and salting rate would be higher,but the final temperatures of brine droplets with different initial temperatures approached the same value during evaporation process.关键词
降压蒸发/盐析/数值模拟/液滴Key words
depressurized evaporation/salting out/numerical simulation/droplet分类
能源科技引用本文复制引用
刘璐,舒盼盼,王茉,刘彦丰..盐水液滴降压蒸发析盐过程数值模拟[J].化工进展,2015,(1):49-53,5.基金项目
河北省自然科学基金项目（E2012502069）及中央高校基本科研业务费专项资金资助项目（2014MS106）。 （）
