Catalytic Internal Reforming, Electrochemical Performance and Thermal Effect of Large-Scale SOFC Single Cell Using Oxygen-Bearing Low-Concentration Coal Mine Methane

2021 ◽  
Vol MA2021-03 (1) ◽  
pp. 24-24
Author(s):  
Xinxin Wang ◽  
Yihan Ling ◽  
Yunfeng Tian
Keyword(s):  
Electrochemical Performance ◽  
Single Cell ◽  
Thermal Effect ◽  
Coal Mine ◽  
Large Scale ◽  
Low Concentration ◽  
Coal Mine Methane ◽  
Internal Reforming

Premixed combustion of low-concentration coal mine methane with water vapor addition in a two-section porous media burner

Fuel ◽  
2018 ◽  
Vol 213 ◽  
pp. 72-82 ◽  
Author(s):  
Huaming Dai ◽  
Qi Zhao ◽  
Baiquan Lin ◽  
Song He ◽  
Xianfeng Chen ◽  
...  
Keyword(s):  
Porous Media ◽  
Water Vapor ◽  
Coal Mine ◽  
Premixed Combustion ◽  
Low Concentration ◽  
Coal Mine Methane ◽  
Porous Media Burner

Combustion characteristics of low-concentration coal mine methane in ceramic foam burner with embedded alumina pellets

2015 ◽  
Vol 90 ◽  
pp. 489-498 ◽  
Author(s):  
Huaming Dai ◽  
Baiquan Lin ◽  
Kaige Ji ◽  
Chaoqun Wang ◽  
Qingzhao Li ◽  
...  
Keyword(s):  
Coal Mine ◽  
Combustion Characteristics ◽  
Ceramic Foam ◽  
Low Concentration ◽  
Coal Mine Methane

Impact of Process Parameters on Oxygen-Bearing Low Concentration Coal Mine Methane Enrichment by Proportion Pressure Swing Adsorption

2012 ◽  
Vol 549 ◽  
pp. 961-965
Author(s):  
Yong Ling Li ◽  
Ying Shu Liu ◽  
Xiong Yang ◽  
Yu Meng ◽  
Chuan Zhao Zhang
Keyword(s):  
Oxygen Concentration ◽  
Coal Mine ◽  
Molecular Sieves ◽  
Pressure Swing Adsorption ◽  
Methane Concentration ◽  
Exhaust Gas ◽  
Adsorption Time ◽  
Low Concentration ◽  
Coal Mine Methane ◽  
Pressure Swing

Conventional PSA methods with a single adsorbent can result in an explosive CH4 concentration of 5 to 15%, making low concentration coal mine methane (LCCMM) or risky in terms of safety at a concentration of 30%. Proportion Pressure Swing Adsorption (PPSA) is a new and safer enrichment method suggested for LCCMM enrichment that uses a mixture of active carbon (AC) and carbon molecular sieves (CMS) as adsorbents. The effect of adsorption Pressure, adsorption time and bed length on the PPSA process were investigated to verify the feasibility of this method. The experiment results show that the methane concentration in desorption gas and the oxygen concentration in exhaust gas increased and decreased, respectively, with an increase in adsorption pressure or bed length. And the methane concentration in desorption gas is increased with the adsorption time expanding, but the recovery of methane is reduced. So the methane concentration in desorption gas can be increased to more than 30% and the oxygen concentration in exhaust gas be decrease to less than 12% by increasing the adsorption pressure or lengthening the bed.

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

2012 ◽  
Vol 479-481 ◽  
pp. 521-524
Author(s):  
Yong Ling Li ◽  
Ying Shu Liu ◽  
Xiong Yang
Keyword(s):  
Coal Mine ◽  
Pressure Swing Adsorption ◽  
Methane Concentration ◽  
Enrichment Method ◽  
Adsorption Characteristic ◽  
Low Concentration ◽  
Coal Mine Methane ◽  
Explosion Limit ◽  
Pressure Swing ◽  
Explosion Risk

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.

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