1987
DOI: 10.1021/ie00061a018
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Study of char gasification by carbon dioxide. 2. Continuous gasification in fluidized bed

Abstract: Coal char gasification with carbon dioxide was performed in a fludized bed. The continuous pyrolysis of the char was carried out in the nitrogen stream to evaluate the amount of gas produced by thermal decomposition. The gasification reaction was analyzed by assuming the reaction takes place independently after the pyrolysis is completed. The bubble size under the gasification condition was measured by use of the electroresistivity probe. The bubbling bed model and the thermogravimetrically obtained rate equat… Show more

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Cited by 14 publications
(3 citation statements)
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“…and XRD [6,[16][17][18][19]. This work highlighted the effect of structural properties of chars in gasification reaction mechanism and continues to elucidate the intricacies of coal gasification.…”
Section: Tpd Transient Kinetics As Well As Other Characterisation Tmentioning
confidence: 81%
“…and XRD [6,[16][17][18][19]. This work highlighted the effect of structural properties of chars in gasification reaction mechanism and continues to elucidate the intricacies of coal gasification.…”
Section: Tpd Transient Kinetics As Well As Other Characterisation Tmentioning
confidence: 81%
“…The mechanism of this reaction is not yet fully understood but, it is generally beliwed that C02 adsorption on the surface of char (oxygen transfer) foliowed by CO desorption (carbon removal) are the main steps determining the apparent rate (Ergun, 19.56;Walker et al, 19.59;Freund, 1986;Matsui et al, 1987aMatsui et al, , 1987b. The mechanism of this reaction is not yet fully understood but, it is generally beliwed that C02 adsorption on the surface of char (oxygen transfer) foliowed by CO desorption (carbon removal) are the main steps determining the apparent rate (Ergun, 19.56;Walker et al, 19.59;Freund, 1986;Matsui et al, 1987aMatsui et al, , 1987b.…”
mentioning
confidence: 99%
“…Les xperimental data for C02 gasification of coal chars E have been reported using TGA, fixed bed, laminar flow (drop tube) or fluidized bed reactors. The mechanism of this reaction is not yet fully understood but, it is generally beliwed that C02 adsorption on the surface of char (oxygen transfer) foliowed by CO desorption (carbon removal) are the main steps determining the apparent rate (Ergun, 19.56;Walker et al, 19.59;Freund, 1986;Matsui et al, 1987aMatsui et al, , 1987b. This mechanism can be further simplified by proposing the Langmuir-Hinshelwood type rate expression (Koenig et al, 1985;Muhlen et al, 1985;Strange and Walker, 1976).…”
mentioning
confidence: 99%