Matching gasification technologies to coal properties

Collot, Anne-Gaëlle

doi:10.1016/j.coal.2005.05.003

Cited by 223 publications

(143 citation statements)

References 12 publications

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“…2002). Obecność w popiele węgla dużych ilości CaO (w porównaniu do 4,35% wg Cebulaka), może z kolei przyczyniać się do wzrostu temperatury topnienia popiołu (Collot 2006;Porada i in. 2014;Róg 2003), co jest korzystne w przypadku przeznaczenia badanego węgla do zgazowania.…”

Section: Ocena Wynikówunclassified

Evaluation the Value of Some Petrographic, Physico-Chemical and Geochemical Indicators of Quality of Coal in Paralic Series of the Upper Silesian Coal Basin and Attempt to Find a Correlation Between Them

Parzentny

Róg

2017

Gospodarka Surowcami Mineralnymi

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A total of 56 coal seam samples (from active and closed coal mines) representing USCB Paralic Series, were tested. It was determined that the tested coal has low content of mineral matter (especially in Hruśov Beds) as well as of Ag, As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Rb, Sb, Sn, Sr, V and Zn. Only Mn and Pb content in coal is higher than in coal from other deposits around the world. There are differences in the values of physical and chemical, petrographic and geochemical indices of coal quality, between the northern and the south-western part of the USCB and in the profile of the Paralic Series. Thanks to the revealed correlations between the indices of coal quality, significant differences in the role mineral and organic substance play in concentrating some of the trace elements in the tested coal, were determined. Moreover, it was observed that an increase in the rank of coal (expressed with an increase in the value of R0 or/and Qsdaf or/and Cdaf), accompanies a decrease in the content of oxides of main elements in coal ash as well as sulfur and other trace elements in coal. The dependence was observed both in lateral and stratigraphic differences in the rank of coal. Mutual dependences between the indices of the rank of coal (R0, Cdaf, Qsdaf, Vdaf) in the northern and south-western area of the research and in Poruba Beds and Jaklovec Beds, were confirmed. It was determined that an increase in the value of Roga Index (RI) is accompanied by an increase in P2O5 content in ash of coal from the south-western part of the research area. It is probably a result of concurrence of a regional positive anomaly in the rank of coal and high P2O5 content in coal seams in the south-western part of the USCB. The observed increase in the value of RI, accompanying a decrease in the content of sulfate minerals, Cr and Ni in coal and Na2O in coal ash; results from the role the carbonisation process plays in distributing main and trace elements in the mineral matter of coal.

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Section: Ocena Wynikówunclassified

Evaluation the Value of Some Petrographic, Physico-Chemical and Geochemical Indicators of Quality of Coal in Paralic Series of the Upper Silesian Coal Basin and Attempt to Find a Correlation Between Them

Parzentny

Róg

2017

Gospodarka Surowcami Mineralnymi

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“…Gasification is defined as the reaction of carbonaceous feedstocks with air, oxygen, steam and/or carbon dioxide aiming the production of syngas (H 2 and CO), which is suitable for use as a source of energy or as a raw material for the synthesis of chemicals, liquid fuels or other gaseous fuels (Minchener, 2005;Collot, 2006). Producing syngas from coal gasification has attracted major interest mainly due to the generated gas with a H 2 /CO ratio between 1 and 2.…”

Section: Introductionmentioning

confidence: 99%

“…This category of thermochemical conversion has vast application possibilities in the energy field, being praised for its efficient, clean and economically competitive attributes (Ochoa et al, 2001;Collot, 2006).…”

Section: Introductionmentioning

confidence: 99%

Steam Gasification of a Brazilian Subbituminous Coal Aiming the Production of Syngas

Domenico¹,

José²,

Moreira³

2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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-The aim of this work was to investigate the gasification of a Brazilian low-rank coal in the temperature range of 1023-1198 K and steam concentration range of 10-40% in order to evaluate the reaction rate and the product gas composition. Prior to the gasification experiments the raw coal was pyrolysed in a tubular reactor, under N 2 atmosphere and at a temperature of 1173 K. The coal and char samples were characterized by several techniques. The gasification experiments were performed in a thermobalance, at atmospheric pressure and isothermal conditions. The reactivity study was conducted in the kinetically controlled regime, three theoretical models were tested to fit the experimental data and the kinetic parameters were determined. It was found that an increase in temperature and steam concentration enhances the reaction rate and also the formation of H 2 , CO and CO 2 . The gasification kinetics was suitably described by the Shrinking Core Model and an activation energy of 158 kJ/mol and a reaction order of 0.78 (related to the steam composition) were found. The H 2 /CO ratio remained nearly constant, about 3.0, in all gasification experiments.

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“…There is a large number of gasification processes implemented at commercial level and the choice of a given gasification technology is difficult because it depends on diverse factors such as solid fuel availability, type and cost; size constraints; and production rate of energy. Even, in principle, all types of solid fuels can be gasified, the properties of the material to be processed are the least flexible factor to be considered in the analysis and, then, the gasification technology should be primarily matched to the properties of the solid fuels available for gasification (Collot, 2006).…”

Section: Introductionmentioning

confidence: 99%