The drying kinetics of Indonesian low rank coal (IBC) using a lab scale fixed-bed reactor and thermobalance to apply catalytic gasification process

2013 ◽  
Vol 54 ◽  
pp. 138-143 ◽  
Author(s):  
Tae-Jin Kang ◽  
Hueon Namkung ◽  
Li-Hua Xu ◽  
Sihyun Lee ◽  
Sangdo Kim ◽  
...  
Keyword(s):  
Fixed Bed ◽  
Drying Kinetics ◽  
Fixed Bed Reactor ◽  
Low Rank ◽  
Low Rank Coal ◽  
Catalytic Gasification ◽  
Gasification Process ◽  
Kinetics Of

K2CO3-Catalyzed Steam Gasification of Indonesian Low-Rank Coal for H2-Rich Gas Production in a Fixed Bed Reactor

2015 ◽  
Vol 3 (5) ◽  
pp. 527-534 ◽  
Author(s):  
XiangZhou Yuan ◽  
Hueon Namkung ◽  
Tae-Jin Kang ◽  
Hyung-Taek Kim
Keyword(s):  
Fixed Bed ◽  
Gas Production ◽  
Steam Gasification ◽  
Fixed Bed Reactor ◽  
Low Rank ◽  
Low Rank Coal

scholarly journals Green energy technology from buriti (Mauritia flexuosa L. f.) for Brazilian agro-extractive communities

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Munique Gonçalves Guimarães ◽  
Rafael Benjamin Werneburg Evaristo ◽  
Augusto César de Mendonça Brasil ◽  
Grace Ferreira Ghesti
Keyword(s):  
Lignin Content ◽  
Fixed Bed ◽  
Thermal Conversion ◽  
Volatile Matter ◽  
Matter Content ◽  
Green Energy ◽  
Fixed Bed Reactor ◽  
Gasification Process ◽  
Mauritia Flexuosa ◽  
Immediate Analysis

AbstractThe present work analyzed the energy generation potential of Buriti (Mauritia flexuosa L. f.) by thermochemical reactions. The experimental part of the study performed immediate analyses, elemental analyses, lignocellulosic analysis, thermogravimetric analysis, calorific values, and syn gas concentrations measurements of the gasification of Buriti in a fixed-bed reactor. Additionally, numerical simulations estimated the syn gas concentrations of the gasification reactions of Buriti. The immediate analysis showed that Buriti has the highest ash content (4.66%) and highest volatile matter content (85%) compared to other Brazilian biomass analyzed, but the higher heating value was only 18.28 MJ.kg−1. The elemental analysis revealed that the oxygen to carbon ratio was 0.51 while hydrogen to carbon ratio was 1.74, indicating a good thermal conversion efficiency. The Lignocellulosic analysis of Buriti resulted in a high content of holocellulose (69.64%), a lignin content of 28.21% and extractives content of 7.52%. The thermogravimetry of the Buriti indicated that the highest mass loss (51.92%) occurred in a temperature range between 150 °C and 370 °C. Lastly, the experimental gasification study in a fixed-bed updraft gasifier resulted in syn gas concentrations of 14.4% of CO, 11.5% of CO2 and 17.5% of H2 while the numerical simulation results confirmed an optimal equivalence ratio of 1.7 to maximize CO and H2 concentrations. Therefore, based on the results presented by the present work, the gasification process is adequate to transform Buriti wastes into energy resources. Graphic abstract

scholarly journals Non-isothermal TGA study on the combustion reaction kinetics and mechanism of low-rank coal char

RSC Advances ◽  
2018 ◽  
Vol 8 (41) ◽  
pp. 22909-22916 ◽  
Author(s):  
Yingjie Hu ◽  
Zhiqiang Wang ◽  
Xingxing Cheng ◽  
Chunyuan Ma
Keyword(s):  
Thermal Analysis ◽  
Reaction Kinetics ◽  
Coal Char ◽  
Kinetics And Mechanism ◽  
Combustion Reaction ◽  
Low Rank ◽  
Low Rank Coal ◽  
Pyrolytic Char ◽  
Kinetics Of

The combustion reaction kinetics of pyrolytic char of low-rank coal was investigated by using thermal analysis technology.

scholarly journals Implications of carbon dioxide sorption kinetics of low rank coal

2019 ◽  
Vol 1242 ◽  
pp. 012053
Author(s):  
A Rahim ◽  
S S Surjono ◽  
D H Amijaya ◽  
K Sasaki
Keyword(s):  
Carbon Dioxide ◽  
Sorption Kinetics ◽  
Low Rank ◽  
Low Rank Coal ◽  
Carbon Dioxide Sorption ◽  
Kinetics Of

scholarly journals Hydrogen Storage in Propane-Hydrate: Theoretical and Experimental Study

2020 ◽  
Vol 10 (24) ◽  
pp. 8962
Author(s):  
Mohammad Reza Ghaani ◽  
Satoshi Takeya ◽  
Niall J. English
Keyword(s):  
Hydrogen Storage ◽  
Storage Capacity ◽  
Fixed Bed ◽  
Hydrogen Uptake ◽  
Hydrogen Release ◽  
Fixed Bed Reactor ◽  
Gas Dispersion ◽  
Fixed Bed Reactors ◽  
Non Equilibrium Molecular Dynamics ◽  
Kinetics Of

There have been studies on gas-phase promoter facilitation of H2-containing clathrates. In the present study, non-equilibrium molecular dynamics (NEMD) simulations were conducted to analyse hydrogen release and uptake from/into propane planar clathrate surfaces at 180–273 K. The kinetics of the formation of propane hydrate as the host for hydrogen as well as hydrogen uptake into this framework was investigated experimentally using a fixed-bed reactor. The experimental hydrogen storage capacity propane hydrate was found to be around 1.04 wt% in compare with the theoretical expected 1.13 wt% storage capacity of propane hydrate. As a result, we advocate some limitation of gas-dispersion (fixed-bed) reactors such as the possibility of having un-reacted water as well as limited diffusion of hydrogen in the bulk hydrate.

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