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Petroleum Science >2018, Issue 3: 625-633 DOI: https://doi.org/10.1007/s12182-018-0243-0

Optimal activated carbon for separation of CO₂ from (H₂ + CO₂) gas mixture Open Access

文章信息

作者：Xiao-Xin Zhang, Peng Xiao, Chang-Yu Sun, Gen-Xiang Luo, Jia Ju, Xiao-Rong Wang, Hao-Xuan Wang and Hao Yang

作者单位：

College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China,State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China,State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China,College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China,College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China,College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China,College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China and College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China

投稿时间：2018-01-05

引用方式：Zhang, XX., Xiao, P., Sun, CY. et al. Pet. Sci. (2018) 15: 625. https://doi.org/10.1007/s12182-018-0243-0

文章摘要

Seven types of activated carbon were used to investigate the effect of their structure on separation of CO₂ from (H₂ + CO₂) gas mixture by the adsorption method at ambient temperature and higher pressures. The results showed that the limiting factors for separation of CO₂ from 53.6 mol% H₂ + 46.4 mol% CO₂ mixture and from 85.1 mol% H₂ + 14.9 mol% CO₂ mixture were different at 20 C and about 2 MPa. The best separation result could be achieved when the pore diameter of the activated carbon ranged from 0.77 to 1.20 nm, and the median particle size was about 2.07 lm for 53.6 mol% H₂ ? 46.4 mol% CO₂ mixture and 1.41 lm for 85.1 mol% H₂ + 14.9 mol% CO₂ mixture. The effect of specific area and pore diameter of activated carbon on separation CO₂ from 53.6 mol% H₂ ? 46.4 mol% CO₂ mixture was more significant than that from 85.1 mol% H₂ ? 14.9 mol% CO₂ mixture. CO₂ in the gas phase can be decreased from 46.4 mol% to 2.3 mol%–4.3 mol% with a two-stage separation process.

关键词

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