1976
DOI: 10.1016/0016-2361(76)90090-9
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Kinetics and catalysis of the reaction of coal char and steam

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Cited by 88 publications
(45 citation statements)
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“…These reaction rates at various temperatures are presented on Arrhenius coordinates in Figure Reaction rates used are at 10% conversion level. and the temperature range of 1,123 to 1,273 K used in this study, reaction conditions have also been shown by other workers (Jensen, 1975;Klei et al, 1975;Kayembe and Pulsifer, 1976) to be in the chemical kinetic control regime for the charsteam reaction. This conclusion is further supported by the lack of any rate dependence on particle size, as shown in Table 2 for a series of measurements at 1,173 K .…”
Section: Aiche Journalmentioning
confidence: 59%
“…These reaction rates at various temperatures are presented on Arrhenius coordinates in Figure Reaction rates used are at 10% conversion level. and the temperature range of 1,123 to 1,273 K used in this study, reaction conditions have also been shown by other workers (Jensen, 1975;Klei et al, 1975;Kayembe and Pulsifer, 1976) to be in the chemical kinetic control regime for the charsteam reaction. This conclusion is further supported by the lack of any rate dependence on particle size, as shown in Table 2 for a series of measurements at 1,173 K .…”
Section: Aiche Journalmentioning
confidence: 59%
“…Furthermore, use of catalyst for coal gasification is proposed in order to decrease gasification temperature without changing gasification rate. Transition metals (Ni, Fe) [9][10][11][12][13][14], alkali metals (Li, Na, K, Rb) [15][16][17][18][19], and alkaline earth metals (Ca, Mg, Sr, Ba) [17,20,21] showed high activities in coal char gasification. In addition, mineral matter contained in coal affects the reactivity of coal.…”
Section: Introductionmentioning
confidence: 99%
“…Kühl et al [28] and Van Heek et al [29] have examined the kinetics at very high material is manufactured via the decomposition of a phenolic pressures (10 to 70 atm), which again present difficulties resin at a high temperature to remove hydrogen and other related to extrapolation. Kayembe and Pulsifer [30] passed elements besides carbon. The disordered polymer chains steam at 1 atm over a fixed bed of coal char at temperatures leave the material with an amorphous structure with a relabetween 600 ЊC and 850 ЊC and measured the rate through tively low density (quoted as 1.5 g/cm 3 ).…”
Section: Effective Diffusivitymentioning
confidence: 99%
“…In other words, the postcoal in the iron bath smelting process which introduces combustion degree is not solely dependent upon the balance volatiles that decompose at high temperatures into their carbetween the feed rates of oxygen and carbon, but it is also bon and hydrogen components. Coals typically contain dependent upon the manner in which they are consumed in between 4 to 5 pct wt of hydrogen, [1] which translates to 30 the furnace. This inability to achieve the desired level of pct by volume of H 2 and H 2 O in the off-gas.…”
Section: Introductionmentioning
confidence: 99%