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首页> 外文期刊>International journal of nuclear desalination >Seawater feed reverse osmosis preheating appraisal, Part Ⅰ: leading element performance
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Seawater feed reverse osmosis preheating appraisal, Part Ⅰ: leading element performance

机译：海水反渗透预热评估，第一部分：主导元素性能

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This paper is concerned with the seawater reverse osmosis preheating process, and presents a parametric study of the process. The basic transport equations describing the leading element are exhibited and appraised. The leading element, which governs the whole system performance, is studied and analysed. The incorporated and investigated operating parameters are the feed pressure and the temperature for different feed salt concentrations. In addition, different feed flow rates, effects on permeate flux and permeator salt rejection, together with the permeator recovery, are studied. A seawater membrane of a well-known data, for instance FT30SW380HR, is used to perform the study. The membrane water permeability coefficient K_w is determined and correlated. Furthermore, the membrane salt permeability coefficient K_s from the manufacturer system analysis program (ROSA) is given and discussed. The transport governing equations are programmed in a way that facilitates the achievement of a realistic parametric study. The results showed that the permeate flux increases significantly as the feed pressure increases. Also, it increases significantly as the feed salt concentration decreases, and also as the feed temperature and pressure increase. Meanwhile, the permeator salt rejection increases significantly as the feed pressure increases, and decreases significantly as the feed temperature increases. The study of the leading element of the array showed that there are constraints that must be considered, such as maximum membrane flux, maximum applied feed pressure, maximum feed flow rate and maximum feed temperature. Therefore, to attain the maximum membrane flux, the applied feed pressure must be lowered when the feed temperature is increased. In the case where the feed temperature is increased from 18℃ to 45℃, a pressure saving of between 7% and 26% is achieved, according to the feed salt concentration and feed flow rate.
机译：本文涉及海水反渗透预热过程，并对过程进行了参数研究。展示并评估了描述主导元素的基本运输方程。研究和分析了控制整个系统性能的主导元素。纳入和研究的操作参数是不同进料盐浓度的进料压力和温度。此外，还研究了不同的进料流速，对渗透通量和渗透盐截留的影响以及渗透物的回收率。使用众所周知的数据（例如FT30SW380HR）的海水膜进行研究。确定并关联膜透水系数K_w。此外，给出并讨论了制造商系统分析程序（ROSA）的膜盐渗透系数K_s。传输控制方程的编程方式有助于实现实际的参数研究。结果表明，随着进料压力的增加，渗透通量显着增加。而且，随着进料盐浓度的降低，以及进料温度和压力的增加，其显着增加。同时，渗透盐分截留率随着进料压力的增加而显着增加，并随着进料温度的增加而显着下降。对阵列前导元件的研究表明，必须考虑一些约束，例如最大膜通量，最大施加进料压力，最大进料流速和最高进料温度。因此，为了获得最大的膜通量，当进料温度升高时，必须降低施加的进料压力。在进料温度从18℃升高到45℃的情况下，根据进料盐浓度和进料流速，可实现7％至26％的压力节省。

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