Results 191 to 200 of about 101,799 (216)

Reaction kinetics of char—CO2 gasification

Fuel, 1988
Abstract Reaction kinetics of char-CO2 gasification at atmospheric pressure were investigated in a thermobalance reactor using four coals of different rank. Effects of coal rank (lignite to semianthracite), particle size (0.18 to 1.00 mm), reaction temperature (700 to 900 °C) and concentration (30 to 100 vol%) of the reactant gas (CO2) on the ...
Kwon, Tae Whan, Kim, Sand Done Kim, Sang Done, Fung, David P. C.   +2 more
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An Investigation of the Structure and Gasification Reactivity of Char

Applied Mechanics and Materials, 2013
The Yining char samples were prepared in following conditions that raw coal particle size was in range 5-6mm and pyrolysis final temperature was 900oC, 1000oC and 1100oC, respectively, with a heating rate 20oC/min under atmospheric pressure. The gasification reactivity of chars was performed by thermogravimetric analysis (TGA) at 900oC in steam, CO2 ...
Pei Wang, Wen Jian Zhu, Yong Hui Bai, Fan Li   +3 more
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Petrographic characteristics of lignite gasification chars

International Journal of Coal Geology, 2016
Abstract The article presents the petrographic characteristics of lignite subjected to fluidized bed gasification and the residues after the process. The gasifying agents were air, oxygen and carbon dioxide. The petrographic composition of the lignite is dominated by huminite group, with 81.7 vol% share, the inertinite group is 3.6 vol%, while the ...
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Studies in char gasification—II

Chemical Engineering Science, 1979
S. Sundaresan, Neal R. Amundson
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Chemical Kinetics of Carbon and Char Gasification

1991
After introducing the basic processes the lecture focusses on the phenomena of coal gasification as there are the impacts of rank, mineral matter composition, particle size and pyrolysis conditions applied before gasification takes place. Then it concentrates on the elemental reaction steps and the therefrom derived kinetic expressions as function of ...
K. H. Heek, H.-J. Mühlen
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90. Catalytic gasification of chars

Carbon, 1984
J.L Figueiredo, J.J.M Órfão, M.C.A Ferraz, C.A Bernardo   +3 more
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Char gasification by carbon dioxide

Fuel, 1986
Philip C. Koenig, Robert G. Squires, Normand M. Laurendeau   +2 more
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Effects of pressure on coal-char gasification

Fundamental understanding of the effects of operating pressure on coal reaction behaviour is essential to the development of advance clean coal technologies. These advancements of technologies are helpful in the improvement for future industrial growth.
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Sorption Enhanced Catalytic Gasification of Char

15th International Energy Conversion Engineering Conference, 2017
Kiran Raj Goud Burra, Ashwani K. Gupta
openaire   +1 more source

Coal Conversion Submodels for Design Applications at Elevated Pressures. Part II. Char Gasification

Progress in Energy and Combustion Science, 2004
Stephen Nikša
exaly