反渗透海水淡化压力能回收装置进展

反渗透海水淡化在各类淡化技术中迅速崛起得益于压力能回收装置的发展.从该类装置的结构、原理、能量回收效率、设备维护和使用寿命等方面分析比较了国内外各类装置的性能,对该类装置的研究进展进行了综述分析.结果表明:正位移式装置各方面性能优于离心式,但现有的正位移式装置存在各自的缺陷,相关核心技术为国外掌握,今后的研发重点是设计具有自主产权且性能优越的压力能回收装置.

Progress of Pressure Energy Recovery Devices in Reverse Osmosis Seawater Desalination System

As the global shortage of fresh water resources is increasingly serious,the study of seawater desalination technology is strengthened all over the world. Compared with other desalination technologies,the reverse osmosis seawater desalination has rapidly developed because of the development of pressure energy recovery devices. In this paper,the performance was analyzed from several aspects among some pressure energy recovery devices, such as structure, mechanism, energy recovery efficiency,maintenance and life. Results show that the isobaric devices have much better performance than the centrifugal ones. Furthermore,the key technologies are monopolized by foreign countries. Therefore,designing new types of pressure energy recovery devices with superior performance independently is crucial for the sustainable development of our seawater desalination industry.