反渗透海水淡化阀控能量回收装置放大试验研究

摘要

Energy recovery device is of great importance for the reduction of power consumption and thus the desalted water product, and has become an essential apparatus for seawater reverse osmosis (SWRO) systems. The isobaric energy recovery device has been a more promising and competitive technology on the market because of its higher efficiency and easily scaled-p characteristic. In this article, a pilot-cale Fluid-witcher Energy Recovery Device (FS-RD) was presented and an emulational test stand was setup according to the real diagram of SWRO plant. The dynamic performance and energy recovery efficiency of the FS-RD prototype was assessed and analyzed under the rated capacity and pressure. The results prove that the device has good operating stability and its energy recovery efficiency could reach to 95. 96%.%能量回收装置是反渗透海水淡化系统的关键设备之一,对降低系统运行能耗和造水成本至关重要.等压正位移式能量回收装置具有工程放大性好和高效率等优点,成为国内外研究和推广的重点.针对自主开发的反渗透海水淡化阀控能量回收装置进行了中试放大研究,结合能量回收装置在反渗透海水淡化工程中的应用工艺,建立了相应的装置运行试验平台.对装置在处理量为40 m3/h、工作压力为6.4 MPa条件下的流体力学特性和效率特性进行了测试和分析,结果表明,阀控能量回收装置运行稳定性良好,装置能量回收效率达到95.96％.