工业水处理 ›› 2024, Vol. 44 ›› Issue (5): 212-217. doi: 10.19965/j.cnki.iwt.2023-0706

• 经验交流 • 上一篇    

不同能量回收组合工艺下海水淡化系统比能耗分析

宋结民1(), 汪程鹏2,3, 王生辉1,2(), 刘军1, 寇佳文1, 杨一帆1, 田修贵1   

  1. 1. 海南大学机电工程学院,海南 海口 570228
    2. 自然资源部天津海水淡化与综合利用研究所,天津 300192
    3. 天津市蓝十字膜技术有限公司,天津 300192
  • 收稿日期:2024-03-15 出版日期:2024-05-20 发布日期:2024-05-21
  • 作者简介:

    宋结民(1996— ),硕士。电话:13456100175,E-mail:

    王生辉,教授级高工,博士。E-mail:

  • 基金资助:
    海南省省重点研发计划项目(ZDYF2021SHFZ057)

Specific energy consumption analysis of reverse osmosis desalination system with energy recovery combination processes

Jiemin SONG1(), Chengpeng WANG2,3, Shenghui WANG1,2(), Jun LIU1, Jiawen KOU1, Yifan YANG1, Xiugui TIAN1   

  1. 1. Mechanical & Electrical Engineering College, Hainan University, Haikou 570228, China
    2. The Institute of Seawater Desalination and Multipurpose Utilization, MNR, Tianjin 300192, China
    3. Tianjin Blue Cross Membrane Technology Co. , Ltd. , Tianjin 300192, China
  • Received:2024-03-15 Online:2024-05-20 Published:2024-05-21

摘要:

能量回收装置能够降低反渗透海水淡化系统的比能耗与运营成本,是重要的核心节能装备。预设进水流量与回收率均相同的反渗透海水淡化系统,提出无透平单级、单透平单级、双透平双段、单透平段间增压这4种组合工艺,对反渗透系统进行工艺路线设计和设备选型研究。为验证组合工艺的性能,选取两种计算方式对系统比能耗进行分析。结果表明,能量回收技术能够降低系统比能耗,通过对透平式能量回收装置进行优化组合,特别是双透平双段式和单透平段间增压式的组合工艺能够大幅降低系统比能耗和综合成本。

关键词: 海水淡化, 反渗透, 比能耗, 能量回收装置

Abstract:

Energy recovery devices can reduce the specific energy consumption and operation cost of reverse osmosis desalination systems, which is an important core energy-saving equipment. In this paper, four combined processes were proposed, including turbine-free single-stage, single-turbine single-stage, dual-turbine two-stage, and single-turbine inter-stage pressurization for reverse osmosis seawater desalination systems, whilst ensuring the same influent flow rate and recovery rate. The whole process routes and equipment selection were also studied. To evaluate the performance of the combined process, the specific energy consumption ratios were analyzed with two different energy consumption ratio analysis methods. The results showed that energy recovery technology can reduce system-specific energy consumption. Optimizing the combination of turbine energy recovery devices, especially the combination process of dual-turbine double-stage desalination system and single-turbine inter-stage pressurized desalination system can significantly reduce the specific energy consumption and overall cost of the system.

Key words: desalination, reverse osmosis, specific energy consumption, energy recovery device

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