膜科学与技术

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Influences of capacity difference of membrane modules and total influx & efflux location upon result of parallel connection

Authors： YANG Shun-cheng

Units： Shanghai Marine Equipment Research Institute

KeyWords： air-separating membrane module; influx & efflux locations; parallel connection; capacity difference; nitrogen gas; flow-rate; result; nitrogen concentration

ClassificationCode：TQ028.2, TQ051.8+93

year,volume(issue):pagination： 2013,33(6):83-86

Abstract：

There was always some capacity difference each other even if the air-separating membrane modules belonged to the same passel from a manufacturer. The planar parallel connection of modules was adopted widely. So experiment was used to verify if the result of this connection was influenced by the capacity difference and total influx & efflux location. Analyses of experimental data had shown as follows: the location affected the nitrogen-generating result whether or not there was difference, and when it was at the same side beyond modules, the result was the best so that at high N2 concentration the N2 flow-rate could be over 10 percent higher than that at the worst location, and its change would resulted in that of N2 concentration and flow–rate of every module, but some of the final results of this connection had changed ,and another had not. Dimensional symmetrical parallel connection was not better than the planar one so as to be ignored in engineering design. The greater the relative difference would be, the more seriously the capacities of the superior modules would be restrained by inferior ones and the deeper the gap between the factual result and ideal one would be, the more remarkable in particular at high N2 concentration.

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AuthorIntro：

杨顺成，1966年生，男，湖南会同人，硕士，高级工程师主要从事惰气防爆研究工作。 E-mail: yshch001@163.com

Reference：

[1]杨顺成. 空分膜组件的使用效果与其联结方式间的关系[J]. 膜科学与技术, 2001, 21(5): 45-47.
[2]杨顺成. 膜空分所产氮气湿度的影响因素[J]. 膜科学与技术, 2000, 20(1): 22-25.
[3]杨顺成. 液货船、化学品船防爆系统关键设备—膜空分制氮装置的研制[J]. 舰船科学技术, 1996, 150(6): 84-89.
[4]杨顺成. 膜空分制氮过程稳定性影响因素研究[J]. 膜科学与技术, 2004, 24(6): 70-72.

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