SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (5): 1285-1292.DOI: 10.1016/j.cjche.2020.02.004

• Separation Science and Engineering • 上一篇    下一篇

High-performance SSZ-13 membranes prepared using ball-milled nanosized seeds for carbon dioxide and nitrogen separations from methane

Xinping Li1, Yaowei Wang2, Tangyin Wu1, Shichao Song1, Bin Wang1, Shenglai Zhong1, Rongfei Zhou1   

  1. 1 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China;
    2 Shandong Chambroad Petrochemicals Co., Ltd, Binzhou 256500, Shandong, China
  • 收稿日期:2019-11-12 修回日期:2020-01-31 出版日期:2020-05-28 发布日期:2020-07-29
  • 通讯作者: Xinping Li, Tangyin Wu, Shichao Song, Bin Wang, Shenglai Zhong, Rongfei Zhou
  • 基金资助:
    We gratefully acknowledge the financial support of this study from National Key Research and Development Program of China (No. 2017YFB0603402) and the National Natural Science Foundation of China (No. 21576131, 21938007 and 21366013). Mr. Wu thanks the support of Jiangsu College Student Innovation Training Project (201910291049Z).

High-performance SSZ-13 membranes prepared using ball-milled nanosized seeds for carbon dioxide and nitrogen separations from methane

Xinping Li1, Yaowei Wang2, Tangyin Wu1, Shichao Song1, Bin Wang1, Shenglai Zhong1, Rongfei Zhou1   

  1. 1 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China;
    2 Shandong Chambroad Petrochemicals Co., Ltd, Binzhou 256500, Shandong, China
  • Received:2019-11-12 Revised:2020-01-31 Online:2020-05-28 Published:2020-07-29
  • Contact: Xinping Li, Tangyin Wu, Shichao Song, Bin Wang, Shenglai Zhong, Rongfei Zhou
  • Supported by:
    We gratefully acknowledge the financial support of this study from National Key Research and Development Program of China (No. 2017YFB0603402) and the National Natural Science Foundation of China (No. 21576131, 21938007 and 21366013). Mr. Wu thanks the support of Jiangsu College Student Innovation Training Project (201910291049Z).

摘要: SSZ-13 membranes with high separation performances were prepared using ball-milled nanosized seeds by once hydrothermal synthesis. Separation performances of SSZ-13 membranes in CO2/CH4 and N2/CH4 mixtures were enhanced after synthesis modification. Single-gas permeances of CO2, N2 and CH4 and ideal selectivities were recorded through SSZ-13 membranes. The effects of temperature, pressure, feed flow rate and humidity on separation performance of the membranes were discussed. Three membranes prepared after synthesis modifications had an average CO2 permeance of 1.16×10-6 mol·(m2·s·Pa)-1 (equal to 3554 GPU) with an average CO2/CH4 selectivity of 213 in a 50 vol%/50 vol% CO2/CH4 mixture. It suggests that membrane synthesis has a good reproducible. The membrane also displayed a N2 permeance of 1.07×10-7 mol·(m2·s·Pa)-1 (equal to 320 GPU) with a N2/CH4 selectivity of 13 for a 50 vol%/50 vol% N2/CH4 mixture. SSZ-13 membrane displayed stable and good separation performance in the wet CO2/CH4 mixture for a long test period over 100 h at 348 K. The current SSZ-13 membranes show great potentials for the simultaneous removals of CO2 and N2 in natural gas purification as a facile process suitable for industrial application.

关键词: Carbon/methane separation, Nitrogen/methane separation, CHA membrane, Natural gas purification

Abstract: SSZ-13 membranes with high separation performances were prepared using ball-milled nanosized seeds by once hydrothermal synthesis. Separation performances of SSZ-13 membranes in CO2/CH4 and N2/CH4 mixtures were enhanced after synthesis modification. Single-gas permeances of CO2, N2 and CH4 and ideal selectivities were recorded through SSZ-13 membranes. The effects of temperature, pressure, feed flow rate and humidity on separation performance of the membranes were discussed. Three membranes prepared after synthesis modifications had an average CO2 permeance of 1.16×10-6 mol·(m2·s·Pa)-1 (equal to 3554 GPU) with an average CO2/CH4 selectivity of 213 in a 50 vol%/50 vol% CO2/CH4 mixture. It suggests that membrane synthesis has a good reproducible. The membrane also displayed a N2 permeance of 1.07×10-7 mol·(m2·s·Pa)-1 (equal to 320 GPU) with a N2/CH4 selectivity of 13 for a 50 vol%/50 vol% N2/CH4 mixture. SSZ-13 membrane displayed stable and good separation performance in the wet CO2/CH4 mixture for a long test period over 100 h at 348 K. The current SSZ-13 membranes show great potentials for the simultaneous removals of CO2 and N2 in natural gas purification as a facile process suitable for industrial application.

Key words: Carbon/methane separation, Nitrogen/methane separation, CHA membrane, Natural gas purification