Pyrolysis of coal and iron oxides mixtures. 1. Influence of iron oxides on the pyrolysis of coal

Cypres, René; Soudan-Moinet, Claire

doi:10.1016/0016-2361(80)90010-1

Cited by 45 publications

(20 citation statements)

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“…[59][60][61][62][63] Haque et al [59] (tests at 600 °C) showed that in the presence of Fe 2 O 3 the yield of tar decreases, and Lasarev and Chlebik [60] showed an increase in the formation of water. Cypres and SoudanMoinet [62] showed that the presence of iron oxides reduces the primary devolatilization rate of coal between 300 °C and 600 °C, so the yields of tar and hydrocarbon decrease. In the secondary devolatilization zone, the production of CO, H 2 O, and CH 4 increases in the presence of iron oxides, while the hydrogen yield decreases.…”

Section: Coal Pyrolysismentioning

confidence: 99%

Estimation and modeling of parameters for direct reduction in iron ore/coal composites: Part II. Kinetic parameters

Donskoi

McElwain

Wibberley

2003

Metall Mater Trans B

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The published approaches to the mathematical modeling of rates of reduction, of coal gasification, and of devolatilization of coal in iron/ore coal composites are reviewed and critically analyzed. The effect of different parameters on the overall process is discussed. The concepts of a local rate of reduction and gasification and an integrated rate of reduction are introduced, and the rate-controlling steps in each are reviewed. Current approaches to modeling coal pyrolysis are also described. This review, with the estimates, data, and analysis related to modeling rates of reduction, gasification, and pyrolysis, should prove useful to researchers developing models of coalbased iron ore reduction and related processes.

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Section: Coal Pyrolysismentioning

confidence: 99%

Estimation and modeling of parameters for direct reduction in iron ore/coal composites: Part II. Kinetic parameters

Donskoi

McElwain

Wibberley

2003

Metall Mater Trans B

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“…Production of tar and light hydrocarbons is believed to dominate the mass loss during the primary pyrolysis (between 300 and 600°C) [18][19][20], which indicates the addition of iron decreased the evolution rates of tar and light hydrocarbon at ~430°C…”

Section: Coal Pyrolysismentioning

confidence: 99%

CO2 gasification of Powder River Basin coal catalyzed by a cost-effective and environmentally friendly iron catalyst

Zhang

Wang

et al. 2015

Applied Energy

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CO 2 gasification of a sub-bituminous Wyodak coal from the Powder River Basin (PRB) was conducted in a fixed-bed laboratory gasifier at atmospheric pressure with FeCO 3 as a catalyst precursor. The effect of iron on the coal pyrolysis was evaluated by thermo-gravimetric analysis (TGA). Scanning electron microscopy (SEM) was employed to characterize the iron performance in the char gasification. The iron species and oxidation states during the coal gasification, characterized by X-ray diffraction (XRD) and Mössbauer spectroscopy, indicate a complex interaction between the reaction atmosphere and temperature, but generally proceed through reduction to FeO

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“…The presence of iron oxide alters the thermal decomposition of coal. Cypres and Moinet [64] observed that the presence of iron oxide reduces the primary devolatilization rate of coal between 300 and 600 °C. Hematite was found to be more effective in coal pyrolysis than magnetite.…”

Section: Coal Volatilesmentioning

confidence: 99%

Review on Reduction Kinetics of Iron Ore–Coal Composite Pellet in Alternative and Sustainable Ironmaking

Mishra

2020

J. Sustain. Metall.

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The use of iron ore-coal composite pellet as a raw material for iron making is an ongoing area of research. Investigations on composite pellet reduction have reported some interesting phenomena, and experimental and modeling results, in which consistent and inconsistent conclusions have been presented in the literature. The aim of this review is to summarize the fundamentals of reduction kinetics of iron ore-coal composite pellet and the effect of various process parameters such as compositions, particle size, pellet geometry, ambient atmosphere and its partial pressure, heating conditions, and compaction pressure, etc., on it. The industrial application of composite pellet is also discussed. This article will be useful for the researchers carrying out experimental as well as modeling work related to the iron oxide-carbon composite pellet reduction.

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Pyrolysis of coal and iron oxides mixtures. 1. Influence of iron oxides on the pyrolysis of coal

Cited by 45 publications

References 0 publications

Estimation and modeling of parameters for direct reduction in iron ore/coal composites: Part II. Kinetic parameters

Estimation and modeling of parameters for direct reduction in iron ore/coal composites: Part II. Kinetic parameters

CO2 gasification of Powder River Basin coal catalyzed by a cost-effective and environmentally friendly iron catalyst

Review on Reduction Kinetics of Iron Ore–Coal Composite Pellet in Alternative and Sustainable Ironmaking

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