摘要
建立了喷射器低温多效蒸发海水淡化系统的数学模型,计算分析了各种温度损失随温度的变化,并研究了顶值盐水温度、蒸发器效数和动力蒸汽等参数对系统的造水比和生产单位质量淡水所需传热面积的影响。结果表明各种温度损失在末效蒸发器内显著增加;喷射器低温多效蒸发系统的热力特性明显优于多效蒸发系统;通过增加顶值盐水温度、蒸发器效数和动力蒸汽温度,可以实现系统的优化运行。
Mathematical model and thermal analysis were performed for the low temperature multi-effect distillation system combined with thermal vapor compression （LT-MED-TVC）. The variation in temperature loss as a function of effect number was carried out and the effects of the top brine temperature, the number of the evaporator＇s effects ar, d the motive steam pressure on grained output ratio （GOR） and specific heat transfer area were also studied. The results indicate that temperature losses increase significantly in the last effect evaporator. The thermal performance of LT-MED-TVC is much better than that of LT-MED. Better performance is obtained by increasing the top brine temperature, the number of the effects and the motive steam pressure for the operation of the system.
出处
《化学工程》
CAS
CSCD
北大核心
2006年第11期20-24,共5页
Chemical Engineering(China)
基金
辽宁省科学技术基金项目(20042147)
大连市科学技术基金项目
聘请外国文教专家教育部重点项目
关键词
海水淡化
低温多效蒸发
喷射器
蒸发器
seawater desalination
low temperature multi-effect distillation
thermal vapor compression
evaporator
