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ISO 18237-2017 液压动力--脱水器的水分离性能评价方法 Hydraulic fluid power — Method for evaluating water separation performance of dehydrators
This document specifies:<br />— test equipment, test circuit and a procedure for the evaluation of the water separation capabilities of a dehydrator;<br />— a procedure for preparing test fluid;<br />— a procedure for obtaining and analysing the test fluid samples.<br />This document applies only to those dehydration units that can dry a hydraulic fluid to less than 20 % of the hydraulic fluid’s water saturation level at the test temperature. This document provides a test procedure that yields reproducible results for dehydrator water removal performance so that the performance of candidate units is compared on the same basis using the same test fluid.<br />This procedure can be used to test the dehydrator's capabilities on different types of hydraulic fluids at different conditions. Parts of the procedure might need to be changed to suit the hydraulic fluid’s characteristics. For example, the testing of hydraulic fluids with high water solubility (many synthetic and fire-resistant fluids) needs higher concentrations of water at the start of the test; the testing of hydraulic fluids with zinc-based additives needs modifications to the Karl Fischer analysis procedure. However, comparison of performance can be made under the conditions defined in this document....
2024-01-23 06:24:01浏览：35
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渗透气化优先透醇分离膜
20世纪70年代的能源危机促使了人们对可再生能源-发酵法制备乙醇与节能分离工艺的探索.渗透气化膜分离技术作为一种新兴的膜分离技术,具有分离效率高、低能耗、易于和发酵装置耦合、易于与其它分离方法联用等显著优点,特别适用于乙醇/水等恒沸混合物体系的分离.本文简要介绍了渗透气化优先透醇膜的研究背景,总结并分析了用于指导膜材料选择的理论,详细介绍了用于制备优先透醇膜的含硅聚合物、含氟聚合物、有机/无机复合膜材料以及其他聚合物膜材料的的结构特点、改性方法及膜材料分子结构与渗透气化性能间的关系,将不同膜材料对乙醇/水的渗透气化分离性能进行了总结比较,在此基础上总结了目前渗透气化乙醇/水分离膜存在的问题,并对其未来的研究方向和发展前景进行了展望....
2020-07-04 21:56:39浏览：1408
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渗透气化优先透醇分离膜
20世纪70年代的能源危机促使了人们对可再生能源-发酵法制备乙醇与节能分离工艺的探索.渗透气化膜分离技术作为一种新兴的膜分离技术,具有分离效率高、低能耗、易于和发酵装置耦合、易于与其它分离方法联用等显著优点,特别适用于乙醇/水等恒沸混合物体系的分离.本文简要介绍了渗透气化优先透醇膜的研究背景,总结并分析了用于指导膜材料选择的理论,详细介绍了用于制备优先透醇膜的含硅聚合物、含氟聚合物、有机/无机复合膜材料以及其他聚合物膜材料的的结构特点、改性方法及膜材料分子结构与渗透气化性能间的关系,将不同膜材料对乙醇/水的渗透气化分离性能进行了总结比较,在此基础上总结了目前渗透气化乙醇/水分离膜存在的问题,并对其未来的研究方向和发展前景进行了展望....
2020-03-23 18:05:58浏览：1416
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