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Bae JS, Yu XX, Su S. Enrichment of Low-Quality Methane by Various Combinations of Vacuum and Temperature Swing Adsorption Processes. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun-Seok Bae
- CSIRO Mineral Resources, 1 Technology Court, Pullenvale, Queensland 4069, Australia
| | - Xin Xiang Yu
- CSIRO Mineral Resources, 1 Technology Court, Pullenvale, Queensland 4069, Australia
| | - Shi Su
- CSIRO Mineral Resources, 1 Technology Court, Pullenvale, Queensland 4069, Australia
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Wang Q, Yu Y, Li Y, Min X, Zhang J, Sun T. Methane separation and capture from nitrogen rich gases by selective adsorption in microporous Materials: A review. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Men’shchikov IE, Shkolin AV, Fomkin AA, Khozina EV. Thermodynamics of methane adsorption on carbon adsorbent prepared from mineral coal. ADSORPTION 2021. [DOI: 10.1007/s10450-021-00338-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
In China, owing to the methane concentration being below 0.75%, the coal ventilation air methane (CVAM) is usually emitted directly into the atmosphere, rather than utilized, which not only causes huge waste of energy but also exerts potential hazards to the greenhouse effect. It is important and practicable to save costs of development and investment by simulating enrichment and separation of CVAM with an aim to improve the efficiency and recovery of adsorption separation. Above all, it will have important practical significance to the development of adsorption separation. In this paper, the experiment of the pressure swing adsorption process was carried out on double towers built by our laboratory, and the Aspen Adsorption was used to simulate the process. The effect of the operation parameters on the desorbed methane concentration was studied by altering the feed concentration, the adsorbed pressure, and adsorbed and desorbed time. The results of simulation and experiment are basically consistent. The ratio of methane was decreased following the increasing concentration of the feed. The optimum adsorption pressure and time were found to be 210 kPa and 120 s, respectively. The optimum desorption times of experiment and simulation were 150 s and 120 s, respectively. Because there was a man-made 30 s time lag between the experiment and simulation to protect the vacuum pump, the results show that the simulation and experiment were matched well. Therefore, we can make use of Aspen Adsorption to design separation and enrichment of CVAM, providing theoretical and practical guidance for the gas separation and saving resources and energy.
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Zhang J, Liu H, Zhou F, Li X, Wei K, Song J. Enrichment of Oxygen-Containing Low-Concentration Coalbed Methane with CMS-3KT as the Adsorbent. ACS OMEGA 2021; 6:6914-6923. [PMID: 33748605 PMCID: PMC7970559 DOI: 10.1021/acsomega.0c06148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
A type of carbon molecular sieve (CMS-3KT) was used as the adsorbent for the CH4 enrichment of a methane/oxygen/nitrogen (CH4/O2/N2) mixture using micro-positive pressure vacuum pressure swing adsorption (∼120 kPa). The adsorption isotherms of individual CH4, O2, and N2 on CMS-3KT were studied and fitted. The results indicated the important influence of the adsorbent surface heterogeneity on the adsorption equilibrium process. In addition, the interaction of adsorbent-adsorbate in this process was studied from the measured adsorption heat. The adsorption uptake curves were fitted linearly with a classical micropore model for evaluating the kinetics-based separation possibility of CH4/O2/N2, and the corresponding diffusion time constants of CH4, O2, and N2 were calculated. Based on the results of adsorption equilibrium and kinetics, breakthrough experiments were employed to explore the upper limit value of methane concentration in feed gas such that methane can be enriched feasibly but difficultly. The breakthrough experiments were performed on the CH4/O2/N2 mixture with CH4 concentration ranging from 1 to 30%. Regarding industrial application, the O2 removal and CH4 enrichment performance of ultra-low-concentration methane (CH4 < 5%) were evaluated according to the results of the breakthrough experiment. The results indicated that the proposed method was promising for enriching O2-containing ultra-low-concentration CBM.
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Affiliation(s)
- Jie Zhang
- Jiangsu
Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
- Faculty
of Safety Engineering, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
| | - Hong Liu
- Jiangsu
Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
- National
Engineering Research Centre for Coal Gas Control, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
- Faculty
of Safety Engineering, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
| | - Fubao Zhou
- Jiangsu
Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
- National
Engineering Research Centre for Coal Gas Control, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
- Faculty
of Safety Engineering, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
| | - Xingcheng Li
- Jiangsu
Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
- Faculty
of Safety Engineering, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
| | - Kangwei Wei
- Jiangsu
Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
- Faculty
of Safety Engineering, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
| | - Jiaojiao Song
- Jiangsu
Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
- Faculty
of Safety Engineering, China University of Mining and Technology (CUMT), Xuzhou 221116, PR China
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Hu G, Zhao Q, Tao L, Xiao P, Webley PA, Li KG. Enrichment of low grade CH4 from N2/CH4 mixtures using vacuum swing adsorption with activated carbon. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116152] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ursueguía D, Díaz E, Vega A, Ordóñez S. Methane separation from diluted mixtures by fixed bed adsorption using MOFs: Model validation and parametric studies. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117374] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Nandanwar SU, Corbin DR, Shiflett MB. A Review of Porous Adsorbents for the Separation of Nitrogen from Natural Gas. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02730] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sachin U. Nandanwar
- Department of Chemical and Petroleum Engineering, University of Kansas, 1530 West 15th Street, Lawrence, Kansas 66045, United States
- Center for Environmentally Beneficial Catalysis, University of Kansas, 1501 Wakarusa Drive, Lawrence, Kansas 66047, United States
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune − 411 008, India
| | - David R. Corbin
- Center for Environmentally Beneficial Catalysis, University of Kansas, 1501 Wakarusa Drive, Lawrence, Kansas 66047, United States
| | - Mark B. Shiflett
- Department of Chemical and Petroleum Engineering, University of Kansas, 1530 West 15th Street, Lawrence, Kansas 66045, United States
- Center for Environmentally Beneficial Catalysis, University of Kansas, 1501 Wakarusa Drive, Lawrence, Kansas 66047, United States
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Li Y, Wang S, Wang B, Wang Y, Wei J. Sustainable Biomass Glucose-Derived Porous Carbon Spheres with High Nitrogen Doping: As a Promising Adsorbent for CO 2/CH 4/N 2 Adsorptive Separation. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E174. [PMID: 31963914 PMCID: PMC7023444 DOI: 10.3390/nano10010174] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 01/13/2020] [Indexed: 11/17/2022]
Abstract
Separation of CO2/CH4/N2 is significantly important from the view of environmental protection and energy utilization. In this work, we reported nitrogen (N)-doped porous carbon spheres prepared from sustainable biomass glucose via hydrothermal carbonization, CO2 activation, and urea treatment. The optimal carbon sample exhibited a high CO2 and CH4 capacity, as well as a low N2 uptake, under ambient conditions. The excellent selectivities toward CO2/N2, CO2/CH4, and CH4/N2 binary mixtures were predicted by ideal adsorbed solution theory (IAST) via correlating pure component adsorption isotherms with the Langmuir-Freundlich model. At 25 °C and 1 bar, the adsorption capacities for CO2 and CH4 were 3.03 and 1.3 mmol g-1, respectively, and the IAST predicated selectivities for CO2/N2 (15/85), CO2/CH4 (10/90), and CH4/N2 (30/70) reached 16.48, 7.49, and 3.76, respectively. These results should be attributed to the synergistic effect between suitable microporous structure and desirable N content. This report introduces a simple pathway to obtain N-doped porous carbon spheres to meet the flue gas and energy gas adsorptive separation requirements.
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Affiliation(s)
- Yao Li
- School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China (Y.W.)
- State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454000, China
| | - Shiying Wang
- School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China (Y.W.)
| | - Binbin Wang
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Yan Wang
- School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China (Y.W.)
| | - Jianping Wei
- School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China (Y.W.)
- State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454000, China
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Shi Q, Wang J, Shang H, Bai H, Zhao Y, Yang J, Dong J, Li J. Effective CH4 enrichment from N2 by SIM-1 via a strong adsorption potential SOD cage. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115850] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yang X, Zheng Y, Wang L, Guo Q, Shan H, Xu Z, Luo J. Application of CH4/N2 separation based on poly(styrene-b-isoprene-b-styrene) (SIS)-poly(dimethylsiloxane-co-methylhydrosiloxane) (PDMS-co-PMHS) crosslinked membrane. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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