Modelling and simulation of two-bed PSA process for separating H2 from methane steam reforming

doi:10.1016/j.cjche.2018.11.022

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (8): 1870-1878.DOI: 10.1016/j.cjche.2018.11.022

• Process Systems Engineering and Process Safety • 上一篇下一篇

Modelling and simulation of two-bed PSA process for separating H₂ from methane steam reforming

Huiru Li¹, Zuwei Liao², Jingyuan Sun¹, Binbo Jiang¹, Jingdai Wang², Yongrong Yang²

1 Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China;
2 State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China

收稿日期:2018-08-25 修回日期:2018-11-19 出版日期:2019-08-28 发布日期:2019-11-16
通讯作者: Zuwei Liao
基金资助:
The financial support from the project of National Natural Science Foundation of China (21822809 & 61590925), the National Science Fund for Distinguished Young Scholars (21525627).

Modelling and simulation of two-bed PSA process for separating H₂ from methane steam reforming

Huiru Li¹, Zuwei Liao², Jingyuan Sun¹, Binbo Jiang¹, Jingdai Wang², Yongrong Yang²

1 Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China;
2 State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China

Received:2018-08-25 Revised:2018-11-19 Online:2019-08-28 Published:2019-11-16
Contact: Zuwei Liao
Supported by:
The financial support from the project of National Natural Science Foundation of China (21822809 & 61590925), the National Science Fund for Distinguished Young Scholars (21525627).

摘要/Abstract

摘要： Methane steam reforming is the main hydrogen production method in the industry. The product of methane steam reforming contains H₂, CH₄, CO and CO₂ and is then purified by pressure swing adsorption (PSA) technology. In this study, a layered two-bed PSA process was designed theoretically to purify H₂ from methane steam reforming off gas. The effects of adsorption pressure, adsorption time and purgeto-feed ratio (P/F ratio) on process performance were investigated to design a PSA process with more than 99.95% purity and 80% recovery. Since the feed composition of the PSA process changes with the upstream process, the effect of the feed composition on the process performance was discussed as well. The result showed that the increase of CH₄ concentration, which was the weakest adsorbate, would have a negative impact on product purity.

关键词: Hydrogen, Adsorption, Purity, Recovery, Feed composition

Abstract: Methane steam reforming is the main hydrogen production method in the industry. The product of methane steam reforming contains H₂, CH₄, CO and CO₂ and is then purified by pressure swing adsorption (PSA) technology. In this study, a layered two-bed PSA process was designed theoretically to purify H₂ from methane steam reforming off gas. The effects of adsorption pressure, adsorption time and purgeto-feed ratio (P/F ratio) on process performance were investigated to design a PSA process with more than 99.95% purity and 80% recovery. Since the feed composition of the PSA process changes with the upstream process, the effect of the feed composition on the process performance was discussed as well. The result showed that the increase of CH₄ concentration, which was the weakest adsorbate, would have a negative impact on product purity.

Key words: Hydrogen, Adsorption, Purity, Recovery, Feed composition

Huiru Li, Zuwei Liao, Jingyuan Sun, Binbo Jiang, Jingdai Wang, Yongrong Yang. Modelling and simulation of two-bed PSA process for separating H₂ from methane steam reforming[J]. 中国化学工程学报, 2019, 27(8): 1870-1878.

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Modelling and simulation of two-bed PSA process for separating H₂ from methane steam reforming

Modelling and simulation of two-bed PSA process for separating H₂ from methane steam reforming

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