Processing of coal mine gas with low methane concentrations for use in high-temperature fuel cells

Brinkmann, Torsten; Scholles, Carsten; Wind, Jan; Wolff, Thorsten; Dengel, Andreas; Clemens, W.

doi:10.1016/j.desal.2007.02.079

Cited by 11 publications

(6 citation statements)

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“…Experience gained from experiences with organic vapor recovery provide the background to evaluate the applicability of membranes for this application [45]. If a certain minimum methane concentration can be provided, the methane can be used as feedstock for power-generation units.…”

Section: Discussionmentioning

confidence: 99%

Membranes for Recovery of Volatile Organic Compounds

Ohlrogge

Wind

Brinkmann

2010

Comprehensive Membrane Science and Engineering

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Section: Discussionmentioning

confidence: 99%

Membranes for Recovery of Volatile Organic Compounds

Ohlrogge

Wind

Brinkmann

2010

Comprehensive Membrane Science and Engineering

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“…Environmental reporting trend is increasing in developed and developing countries (Albertini, 2014;Plumlee, Brown, Hayes, & Marshall, 2015;Malarvizhi & Matta, 2016;D'Amico, Coluccia, Fontana, & Solimene, 2016) , literature revealed that now people are much interested regarding protection of environment (Brinkmann, Scholles et al 2008). Further, it is analyzed that environmental protection activities improve customers trust and attracts investors (McGuire, Sundgren et al 1988).…”

Section: Literature Reviewmentioning

confidence: 99%

“…On the contrary, there are few studies, which concluded that there is a negative relation between environmental accounting and firm's performance. Environmetal accounting negatively associate with return on capital employed , earning per share,dividend per share , however, profit margin have positivie association with environmetal accounting (Makori and Jagongo (2013).Futher analyzed that environmental accounting and firm's profitability has no strong relationship (Brammer and Pavelin 2008;Brinkmann, Scholles et al 2008).It is observed that environmental accounting doesn't affects firms profitability (Dechezleprêtre and Sato 2014).…”

Section: Literature Reviewmentioning

confidence: 99%

Relationship between Environmental Accounting and non-financial Firms Performance: An Empirical Analysis of Selected Firms Listed in Pakistan Stock Exchange, Pakistan

Ahmad¹,

Waseer²,

Hussain³

et al. 2018

ASSRJ

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Environmental accounting provides a framework through measure present, past and future environment cost for decision-making and public communication. Environment awareness has made people concerned over the world in green accounting to observed ecological performance of their surroundings. The purpose of this study is to investigate relationship between environmental accounting and non-financial firm's performance listed in Pakistan stock exchange, Pakistan. Present study used regression analysis technique (REM), using companies' annual data from 2006-2016. The empirical analysis showed a significant positive relationship between environmental accounting and firm's size. While, earning per share and return on capital employed statistically turned out to be insignificant. Therefore, those companies, which have huge size, spend more resources for social welfare in term of environment pollution protection. On the Contrary, the limitation of this research is small sample size of listed companies in Pakistan stock exchange. Hence, outcomes cannot be generalized for entire population. Based on the results, it is suggested that government must give some tax relief to those firms, which work for the environment protection and environmental reporting should be compulsory in Pakistan to have clean homeland. This study has contributed to literature by adding data from Pakistan. By the researcher's best knowledge, the data on Pakistan is currently limited and this study contributes a better understanding on environmental reporting practices.

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“…For proper operation, gas engines require a minimum methane concentration of 25-30%, while gas turbines require a minimum concentration of 40% [22]. Some authors stipulate higher minimum concentration values for gas engines -35% [23]. In general, a methane concentration of at least 30% is required.…”

Section: Introductionmentioning

confidence: 99%

Tests to Ensure the Minimum Methane Concentration for Gas Engines to Limit Atmospheric Emissions

Borowski¹,

Życzkowski²,

Łuczak³

et al. 2019

Preprint

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During the extraction of hard coal in Polish conditions, methane is emitted, which is referred to as mine gas. As a result of the desorption of methane, a greenhouse gas is released from coal seams. In order to reduce atmospheric emissions, methane from coal seams is captured by a methane drainage system. On the other hand, methane, which has been separated into underground mining excavations, is discharged into the atmosphere with a stream of ventilation air. For many years, Polish hard coal mines have been capturing methane to ensure the safety of the crew and the continuity of mining operations. As a greenhouse gas, methane has a significant potential, as it is more effective at absorbing and re-emitting radiation than carbon dioxide. The increase in the amount of methane in the atmosphere is a significant factor influencing global warming, however, it is not as strong as the increase in carbon dioxide. Therefore, in Polish mines, the methane-air mixture captured in the methane drainage system is not emitted to the atmosphere, but burned as fuel in systems, including cogeneration systems, to generate electricity, heat and cold. However, in order for such use to be possible, the methane-air mixture must meet appropriate quality and quantity requirements. The article presents an analysis of changes in selected parameters of the captured methane-air mixture from one of the hard coal mines in the Upper Silesian Coal Basin in Poland. The paper analyses the changes in concentration and size of the captured methane stream through the methane capturing system. The gas captured by the methane drainage system, as an energy source, can be used in cogeneration, when the methane concentration is greater than 40%. Considering the variability of CH4 concentration in the captured mixture, it was also indicated which pure methane stream must be added to the gas mixture in order for this gas to be used as a fuel for gas engines. The balance of power of produced electric energy in gas engines is presented. Possible solutions ensuring constant concentration of the captured methane-air mixture are also presented.

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Processing of coal mine gas with low methane concentrations for use in high-temperature fuel cells

Cited by 11 publications

References 1 publication

Membranes for Recovery of Volatile Organic Compounds

Membranes for Recovery of Volatile Organic Compounds

Relationship between Environmental Accounting and non-financial Firms Performance: An Empirical Analysis of Selected Firms Listed in Pakistan Stock Exchange, Pakistan

Tests to Ensure the Minimum Methane Concentration for Gas Engines to Limit Atmospheric Emissions

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