1993
DOI: 10.1021/ef00039a010
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Factors affecting the reactivity of chars and cokes during low-temperature (640 .degree.C) steam gasification

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Cited by 16 publications
(9 citation statements)
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“…In recent years, preliminary efforts [4][5][6] have been put into petroleum coke gasification. The low reactivity of petroleum coke, derived from its carbon structure, low combustible volatile and low ash content, is the key problem in the application of petroleum coke as the feedstock of entrained bed gasifier.…”
Section: Introductionmentioning
confidence: 99%
“…In recent years, preliminary efforts [4][5][6] have been put into petroleum coke gasification. The low reactivity of petroleum coke, derived from its carbon structure, low combustible volatile and low ash content, is the key problem in the application of petroleum coke as the feedstock of entrained bed gasifier.…”
Section: Introductionmentioning
confidence: 99%
“…Numerous investigations of coal gasification reactivity have been carried out by pyrolyzing the coal in a separate step, prior to gasification (e.g., refs −13). However, there are strong indications that details of the two separate steps significantly affect measured gasification reactivities. ,, Chitsera et al observed that at elevated temperatures and pressures, longer soak times during pyrolysis and aging in the atmosphere had negative effects on the reactivity of chars in steam at 40 bar. During steam gasification at 1000−1300 °C in a pressurized thermogravimetric balance, Peng et al .…”
Section: Introductionmentioning
confidence: 99%
“…There is hardly any reaction function model reported specifically on the catalyst regeneration via coke-steam gasification. However, the reaction kinetics of coal char , and petroleum coke , gasification has been fully studied. The typical reaction models ,, for coke gasification are mainly involved in the shrinking core model and homogeneous model, respectively.…”
Section: Materials and Methodsmentioning
confidence: 99%
“…The previous studies were mainly involved in regenerating coke-containing catalyst via air combustion, and few publications for FCC catalyst regeneration via coke gasification are found. However, the characteristics and kinetics of coke-steam gasification for carbonaceous materials have been widely studied, such as coal, petroleum coke, and oil shale, mainly using thermogravimetric (TG) analysis. TG measurement for the reaction kinetics is based on the weight loss data of the samples at different atmospheres under a specified heating program.…”
Section: Introductionmentioning
confidence: 99%