海水淡化能量回收装置能耗分析与设计比选  

Energy Consumption Analysis and Design Comparison of Seawater Desalination Energy Recovery Device

作　　者：汪程鹏 王生辉 肖业祥[4] 杨守志 WANG Chengpeng;WANG Shenghui;XIAO Yexiang;YANG Shouzhi(The Institute of Seawater Desalination and Multipurpose Utilization,MNR(Tianjin),Tianjin 300192,China;Tianjin Lanshizi Membrane Technology Co.,Ltd,Tianjin 300192,China;Weihai Seawater Comprehensive Utilization Industrial Technology Research Center,Weihai 264201,China;State Key Laboratory of Hydroscience and Engineering&Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China;Shijiazhuang Haikuojieneng Technology Co.,Ltd,Shijiazhuang 050031,China)

机构地区：[1]自然资源部天津海水淡化与综合利用研究所,天津300192 [2]天津市蓝十字膜技术有限公司,天津300192 [3]威海市海水综合利用产业技术研究中心,山东威海264201 [4]清华大学水沙科学与水利水电工程国家重点实验室&能源与动力工程系,北京100084 [5]石家庄海阔捷能科技有限公司,河北石家庄050031

出　　处：《水处理技术》2023年第12期51-54,共4页Technology of Water Treatment

基　　金：天津自然科学基金(20JCZDJC00460);天津市科技计划项目(20YDTPJC00970);中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2019-ZD01,R-JBYWF-2021-T02,KJBYWF-2021-T07)。

摘　　要：能量回收装置是反渗透海水淡化的核心节能装备,其性能指标决定海水淡化系统能耗和产水成本。本文通过对1656 m^(3)/d反渗透海水淡化系统开展无能量回收装置、PX能量回收装置、透平式能量回收装置三种工艺设计的能耗分析。结果表明,能量回收技术能够明显降低海水淡化系统能耗,在充分考虑背压和混合的情况下,使用PX能量回收装置和透平式能量回收装置的能耗分别为2.260 kW·h/m^(3)和2.572 kW·h/m^(3),但透平式能量回收装置工艺设备投资成本较PX能量回收装置低。研究结果为反渗透海水淡化工艺设计提供参考。Energy recovery device(ERD)is the core energy-saving equipment of reverse osmosis seawater desalination,and its performance index determines the water production cost and energy consumption of seawater desalination system.In this paper,energy consumption analysis is mainly carried out on the process designs of 1656 m^(3)/d SWRO system with no energy recovery device,pressure exchange(PX)ERD and turbo charger(TC)ERD.The results show that energy recovery technology can significantly reduce the energy consumption of seawater desalination system.Under the condition of fully considering back pressure and mixing,the energy consumptions of PX-ERD and TC-ERD are 2.260 kW·h/m^(3) and 2.572 kW·h/m^(3) respectively.The equipment investment cost of TC-ERD is lower than that of PX-ERD.The research results provide a reference for the reverse osmosis process design of seawater desalination.

关 键 词：海水淡化 反渗透 能量回收装置 工艺设计 能耗 

分 类 号：P747[天文地球—海洋科学]