Influence of coal characteristics on CO2 gasification

Sakawa, Mitsuhiro; Sakurai, Yoshihisa; Hara, Yukiaki

doi:10.1016/0016-2361(82)90245-9

Cited by 97 publications

(63 citation statements)

References 3 publications

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“…Miura et al [30] reviewed factors controlling gasification and found that the reactivities of low-rank coals (C < 80% daf) do not show clear correlation with the fixed carbon content (coal rank), the catalytic effect of active inorganic matter being the dominating factor controlling the reactivity. Although inorganic matter is commonly recognized for catalyzing gasification reactions, total ash content presents a poor correlation with reaction rate [120].…”

Section: Effect Of Catalyst (Minerals)mentioning

confidence: 99%

Coal gasification in CO2 atmosphere and its kinetics since 1948: A brief review

Irfan

Usman

Kusakabe

2011

Energy

428

229

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Section: Effect Of Catalyst (Minerals)mentioning

confidence: 99%

Coal gasification in CO2 atmosphere and its kinetics since 1948: A brief review

Irfan

Usman

Kusakabe

2011

Energy

428

229

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“…Of these, the nature and the thermal history of the char, its pore structure, and fuel chemical composition are considered to be responsible for the biggest differences in results (8,9,10). Additionally, inherent mineral matter in these fuels can play and important role in gasification due to catalytic reactions (11,12).…”

Section: Introductionmentioning

confidence: 99%

Kinetic models comparison for steam gasification of different nature fuel chars

Fermoso

Arias

Pevida

et al. 2008

J Therm Anal Calorim

122

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The reactivity in steam of five different types of solid fuels (two coals, two types of biomass and a petcoke) has been studied. The fuel chars were obtained by pyrolysis in a fixed-bed reactor at a temperature of 1373 K for 30 min. The gasification tests were carried out by thermogravimetric analysis (TGA) at different temperatures and steam concentrations. The reactivity study was conducted in the kinetically controlled regime and three representative gas-solid models, volumetric model (VM), grain model (GM) and random pore model (RPM), were applied in order to describe the reactive behaviour of the chars during steam gasification.The kinetic parameters of these models were derived and the ability of the models to predict conversion and char reactivity during gasification was assessed. The best model for describing the behaviour of the samples was the RPM. The effect of the partial pressure of steam in gasification was studied, and the reaction order with respect to steam was determined. The reactivity of the chars was compared by means of a reactivity index. Biomass exhibited a higher reactivity than coals and petcoke. However, significant differences in reactivity were observed between the two types of biomass used, which could be due to catalytic effects.

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“…5,6) The effect of ash on CO 2 gasification, [7][8][9][10] the order of catalytic activity and the mechanism of catalytic reaction of the alkaline metals such as Na and K, [11][12][13] Li, 14) the alkaline earth metals 17) such as Ca 12,15,16) and Ba, 11) the transition metals such as Fe, 11,18,19) Ni 11,20) have been thoroughly and extensively studied. On the other hand, there are relatively few quantitative data concerning the reactivity of blast furnace coke containing these catalysts in the condition of the thermal reserve zone in a blast furnace, i.e.…”

Section: Introductionmentioning

confidence: 99%