物料水进料方式决定着低温多效海水淡化装置的布置方式,对制水的经济性具有重要影响。对顺流进料、逆流进料和平流进料等几种进料方式的对比与分析表明,顺流进料方式蒸发器结垢风险最小,但经济性较差;逆流进料有效地改善了制水经济性,但需要多台中间进料泵,增加了系统的复杂性与运行电耗;平流进料盐水逐级自流,流程简单,经济性好。研究还表明,TVC的采用可显著降低蒸汽耗量和凝汽器的必要换热面积,有利于降低设备投资费用,提高制水经济性。 Material water feeding method determines the arrangement of low temperature and multi-effect desalination plant, which has an important impact on the economy of water production. The comparison and analysis of several feeding methods, such as co-feed, counter-current feed and advection feed, show that the fouling risk of downstream co-feed evaporator is the lowest, but the economy is poor. The counter feed is effectively improved Water economy, but the need for more than one intermediate feed pump, an increase of system complexity and power consumption; advection fed brine by gravity, the process is simple, good economy. The study also shows that the adoption of TVC can significantly reduce the steam consumption and the necessary heat transfer area of ​​the condenser, which helps to reduce equipment investment costs and improve water economy.