基于强化传热与碳排放的小型热法海水淡化系统工艺路径的探索  

Exploration of Process Path for Small Thermal Desalination System Based on Enhanced Heat Transfer and Carbon Emission

作　　者：双应忠 张帅帅[1] 刘渊博 李启迅 兰忠[1] 马学虎[1] SHUANG Yingzhong;ZHANG Shuaishuai;LIU Yuanbo;LI Qixun;LAN Zhong;MA Xuehu(State Key Laboratory of Fine Chemicals,Liaoning Key Laboratory of Clean Utilization of Chemical Resources,Institute of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]辽宁化学资源清洁利用重点实验室,大连理工大学化工学院化学工程研究所,辽宁大连116024

出　　处：《水处理技术》2023年第12期1-10,共10页Technology of Water Treatment

基　　金：国家自然科学基金(51836002);中央高校基本科研业务费专项资金资助(DUT22LAB601)。

摘　　要：随着远洋技术的发展,我国对小型化、便携化海水淡化装置的需求越来越大,使得开发小型集成式海水淡化装置成为迫切需求。以小型海水淡化系统为研究对象,通过模型分析探究热法小型海水淡化系统的最佳工艺路径和传热强化技术的应用;以换热面积和单位淡水成本为衡量指标,探究不同驱动热源、预热方式和换热器类型等工艺路径对于小型海水淡化系统的适用性;确定采用废热驱动,二次蒸汽预热海水,以及板式蒸发器为核心设备的最佳工艺路径。通过模型计算论证了强化换热技术的应用对于小型海水淡化装置性能的优化和提升,其中窄缝蒸发、疏水涂层和填充泡沫铜等传热强化技术可以节省系统换热面积26.1%~31.9%,减少单位淡水成本3.1%~16.6%。With the development of ocean technology,China's demand for miniaturized and portable desalination devices is increasing,making the development of small integrated desalination devices an urgent need.Taking small-scale desalination systems as the research object,explore the optimal process path and application of heat transfer enhancement technology for thermal small-scale desalination systems through model analysis.Exploring the applicability of different driving heat sources,preheating methods,and heat exchanger types for small-scale desalination systems,using heat exchange area and unit freshwater cost as measurement indicators.The optimal process path for using waste heat drive,secondary steam preheating of seawater,and plate evaporator as core equipment has been determined.Through model calculation,it is demonstrated that the application of enhanced heat transfer technology can optimize and improve the performance of small desalination units.Among them,heat transfer enhancement technologies such as narrow slot evaporation,hydrophobic coating and filling foam copper can save 26.1%~31.9%of the heat transfer area of the system,and reduce 3.1%~16.6%of the unit fresh water cost.

关 键 词：小型海水淡化 传热强化 经济环境效益 

分 类 号：P747[天文地球—海洋科学]