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[1]宗传欣,杨小泉,周浩力,等.聚二甲基硅氧烷-陶瓷复合膜的正己烷-N2分离性能[J].南京工业大学学报(自然科学版),2019,41(05):649-655.[doi:10.3969/j.issn.1671-7627.2019.05.017]
 ZONG Chuanxin,YANG Xiaoquan,ZHOU Haoli,et al.Separation performance of n-hexane-N2 by PDMS-ceramic composite membrane[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(05):649-655.[doi:10.3969/j.issn.1671-7627.2019.05.017]
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聚二甲基硅氧烷-陶瓷复合膜的正己烷-N2分离性能()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年05期
页码:
649-655
栏目:
出版日期:
2019-10-22

文章信息/Info

Title:
Separation performance of n-hexane-N2 by PDMS-ceramic composite membrane
文章编号:
1671-7627(2019)05-0649-07
作者:
宗传欣杨小泉周浩力金万勤
南京工业大学 化工学院 材料化学工程国家重点实验室,江苏 南京 211800
Author(s):
ZONG ChuanxinYANG XiaoquanZHOU HaoliJIN Wanqin
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
挥发性有机物 PDMS-陶瓷复合膜 正己烷
Keywords:
VOCs PDMS-ceramic composite membrane n-hexane
分类号:
TQ028.8
DOI:
10.3969/j.issn.1671-7627.2019.05.017
文献标志码:
A
摘要:
挥发性有机物(VOCs)是大气污染物之一,其排放不仅造成资源浪费,还危害环境与人体健康,如何有效回收处理VOCs是当下亟需妥善解决的问题。本文采用膜分离技术,考察聚二甲基硅氧烷(PDMS)-陶瓷复合膜在不同温度、不同浓度、不同进料流量、不同渗透侧压力的条件下对典型医药行业VOCs废气(正己烷-N2体系)的分离效果。结果表明:PDMS-陶瓷复合膜可有效分离回收摩尔分数为3%正己烷-N2体系,在进料流速为1.2 m3/h、进料温度为30 ℃、真空度为2.5 kPa时,正己烷通量约为12 mol/(h·m2), N2通量约为26.5 mol/(h·m2),选择性约为17。实验进一步研究了复合膜在65 d使用周期内的分离稳定性,结果显示复合膜在正己烷-N2体系中,通量和选择性没有较大的波动,分离性能稳定,说明PDMS-陶瓷复合膜在VOCs回收利用方面具有较好的工业前景。
Abstract:
Volatile organic compounds(VOCs)are one of the atmospheric pollutants. The emissions of VOCs not only lead to the waste of resources, but also endanger the environment and human health. Polydimethyl siloxane(PDMS)-ceramic composite membrane was selected for the separation of the typical VOCs(n-hexane-N2)in pharmaceutical industry. The effects of operation conditions on membrane performance were investigated at different feed concentrations, temperatures, feed volumes and permeate side pressures. Results showed that PDMS-ceramic composite membrane could effectively separate 3% n-hexane-N2. When the feed volume was 1.2 m3/h, the permeate side pressure was 2.5 kPa, hexane flux was about 12 mol/(h·m2)and N2 flux was about 26.5 mol/(h·m2)at 30 ℃ could be obtained with the selectivity was about 17. The further study of the membrane stability for 65 d proved that the separation performance of the membrane was stable during the investigated time range, which indicated that PDMS-ceramic composite membrane had potentials for the recovery of VOCs.

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备注/Memo

备注/Memo:
收稿日期:2019-07-07
基金项目:国家重点研发计划(2017YFC0210901); 江苏省“六大人才”高峰项目(JNHB-041); 江苏高校“青蓝工程”; 材料化学工程国家重点实验室自主课题(ZK201715)
作者简介:宗传欣(1994—),男,E-mail:zongcx1994@njtech.edu.cn; 周浩力(联系人),副教授,zhouhl@njtech.edu.cn; 金万勤(联系人),教授,E-mail:wqjin@njtech.edu.cn.
引用本文:宗传欣,杨小泉,周浩力,等.聚二甲基硅氧烷-陶瓷复合膜的正己烷-N2分离性能[J].南京工业大学学报(自然科学版),2019,41(5):649-655..
更新日期/Last Update: 2019-09-30