Adsorbents for Oxygen-Bearing Low Concentration Coal Mine Methane Enrichment by Proportion Pressure Swing Adsorption

Abstract:

Traditional Pressure Swing Adsorption (PSA) approach of using single adsorbent probably makes methane concentration very close to the explosion limit and may result in explosion risk in the adsorption process, when methane concentration in coal min methane is blow 30%. Based on pressure swing adsorption, Proportion Pressure Swing Adsorption (PPSA), a new enrichment method with high safety, was suggested to enrich low concentration Coal mine methane (LCCMM). A mixture of active carbon (AC) and carbon molecular sieve (CMS) was employed as adsorbent in the process of PPSA. The methane and oxygen in CMM were adsorbed simultaneously. The experimental study was carried out in order to verify the feasibility of this method. The equilibrium adsorption characteristic of AC and CMS were tested, the mixture of AC1 and CMS5 are chosen as adsorbents for LCCMM enrichment by PPSA.

• Periodical: Advanced Materials Research (Volumes 479-481)
• Pages: 521-524
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.479-481.521
• Online since: February 2012
• Authors: Yong Ling Li, Ying Shu Liu, Xiong Yang
• Keywords: Active Carbon (AC), Carbon Molecular Sieve (CMS), Coal Mine Methane, Explosive Limit, Methane Concentration, Proportion Pressure Swing Adsorption (PPSA)

References

[1] C.Ö. Karacan, F.A. Ruiz, M. Cotè, S. Phipps. International Journal of Coal Geology, Vol. 86 (2011), p.121

[2] Yuanping Cheng, Lei Wang, Xiaolei Zhang. International Journal of Greenhouse Gas Control, Vol. 5 (2011), p.157.

[3] Wujian Long. Mining Safety & Environmental Protection, Vol. 37 (2010), p.74. In Chinese

[4] Ming Yang. Energy Policy, Vol. 37 (2009), p.2858.

[5] V. G. Gomes, M. M. Hassan. Separation and Purification Technology. Vol. 24(2001), p.189

[6] Bo Zhang, Ming Gu, Xuefu Xian. Journal of China Coal Society, Vol. 35 (2010), p.1341. In Chinese

[7] Jiangfeng Yang, Qiang Zhao, Qiuhong Yu, et al., Chemical Industry and Engineering Process, Vol. 30 (2011), p.793. In Chinese

[8] Jianfeng Wu, Zhaohu Sun. Maoqiong Gong. Natural Gas Industry, Vol.29(2009), p.1. In Chinese

[9] M. Porter, Jacobs. Rapid generation of control charts for analysis of complex gas mixed in crisis situations. Underground Coal Operators' Conference, (1998), 640

[10] Ming Gu, Xuefu Xian. Mining Safety & Environment Protection, Vol.33(2006), p.11. In Chinese

[11] Xiong Yang, Yingshu Liu, Yongling Li, et al., Journal of China Coal Society, Vol. 35 (2010), p.987. In Chinese