DOI: 10.1016/j.jcou.2018.08.001
Scopus记录号: 2-s2.0-85051172533
论文题名: The removal and capture of CO2 from biogas by vacuum pressure swing process using silica gel
作者: Shen Y. ; Shi W. ; Zhang D. ; Na P. ; Fu B.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 259
结束页码: 271
语种: 英语
英文关键词: Biogas upgrading
; CO2 capture
; Experiments and modeling
; Silica gel
; VPSA
Scopus关键词: Adsorption
; Adsorption isotherms
; Biogas
; Design of experiments
; Numerical models
; Silica
; Silica gel
; Biogas upgrading
; Breakthrough experiment
; Central composite designs
; CO2 capture
; Concentration profiles
; Response surface methodology
; Vacuum pressure swing adsorptions
; VPSA
; Carbon dioxide
英文摘要: In this study, silica gel was employed as adsorbent in a vacuum pressure swing adsorption process for the removal and capture of CO2 from biogas. Adsorption isotherms of CH4 and CO2 on silica gel were measured experimentally, meanwhile a series of breakthrough experiments were also performed on a fixed bed packed with silica gel. In order to design experiments of VPSA process more reasonable, Central Composite Design Methodology was employed to implement the design of experiments, while Response Surface Methodology was used to analyze experimental results. Experimental results showed that the biogas simulated by 55% CH4 balanced with CO2 could be concentrated to an enriched CH4 stream with CH4 purity higher than 98%, after most of the CO2 had been depleted from feed gas by VPSA process. Moreover, dynamic and transient behaviors, such as temperature profiles and concentration profiles in adsorption bed, were revealed by numerical modeling. A good consistency between experimental data and simulation results was observed. Furthermore, an industrial scale dual pressure swing adsorption unit was designed and evaluated by numerical simulation to achieve the goal of CH4 enrichment and CO2 capture simultaneously. Simulation results indicated that the simulated biogas could be separated to an enriched CH4 stream at 98.01% CH4 purity and 97.31% CH4 recovery, as well as a concentrated CO2 stream at 96.74% CO2 purity and 97.58% CO2 recovery. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111799
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
Recommended Citation:
Shen Y.,Shi W.,Zhang D.,et al. The removal and capture of CO2 from biogas by vacuum pressure swing process using silica gel[J]. Journal of CO2 Utilization,2018-01-01,27