期刊
JOURNAL OF MEMBRANE SCIENCE
卷 534, 期 -, 页码 33-45出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2017.04.003
关键词
SO2; Facilitated transport membrane; Membrane stability; CO2 permeance; IR spectrum
资金
- Department of Energy/National Energy Technology Laboratory [DE-FE007632]
- Ohio Development Services Agency [OOE-CDO-D-13-05, OER-CDO-D-15-09]
- Department of Energy [DE-FE0007632]
- National Energy Technology Laboratory, Pittsburgh, PA, USA
Post-combustion carbon capture using membranes is a key approach to control CO2 emissions from power plants using fossil fuels. The minor contaminants, such as SO2 and O-2, may influence the long-term membrane performance. With the presence of SO2 in the feed gas, SO2 could preferably react with amine carriers and hinder the permeation of CO2 in the amine-containing facilitated transport membranes. Possible amine degradation and competitive reactions would reduce membrane performance with real flue gas. With SO2 concentrations of 0.7-5 ppm, two amine-containing facilitated transport membranes were tested at 57 and 102 degrees C, respectively. Unstable membrane performance was observed at 102 degrees C for the membrane containing Lupamin (R) as fixed-site carrier and potassium glycinate (K-Gly) as mobile carrier in the presence of SO2. On the contrary, two membranes containing polyvinylamine (PVAm) as fixed-site carrier and amino acid salts as mobile carriers showed stable separation performance in the presence of 1-3 ppm SO2 at 57 degrees C. Therefore, the operating temperature plays a significant role in the membrane stabilities in the presence of SO2. In addition, the infrared (IR) spectra of the membrane components exposed to SO2 with respect to exposure time were collected. It was found that the amines reacted with SO2 to form sulfite products irreversibly at 102 degrees C. The spectral results were consistent with the observed membrane separation performance. The stable membrane performances of the facilitated transport membranes at 57 degrees C with SO2 at ppm levels indicate the applicability of the developed amine-containing membranes for use in CO2 capture from real flue gas.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据