Effect of coal nature on the gasification process

Özer, Mustafa; Basha, Omar M.; Stiegel, Gary J.; Morsi, Badie I.

doi:10.1016/b978-0-08-100167-7.00007-x

Cited by 14 publications

(17 citation statements)

References 146 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ash, with a high S/A ratio, always increases the AFT of coal ash samples [60]. However, the results of Ozer et al [46] and Liu et al [61] are not in good agreement as their reports concluded with a decrease in AFT with an increase in the S/A ratio.…”

Section: Operational Effectsmentioning

confidence: 81%

A Review of Factors Affecting Gasifier Performance

Pathak,

Dhaigude,

Sahu

et al. 2023

ChemBioEng Reviews

View full text Add to dashboard Cite

The Physico‐chemical characteristics are inherent properties of fuel and their behaviour changes in different gasification conditions. The critical properties of the coal impede the gasifier's performance, and hence, a proper study is needed to develop and further enhance the gasification systems. A proper assessment of factors influencing gasifier performance and their optimization enables to select, alter, and adjust the conditions. The present paper reviews the effect of important coal properties and gasifier operating conditions on gasification performance parameters. Further, the suitability of gasifiers (moving bed, fluidized bed, and entrained flow) according to the physico‐chemical properties of fuel along with proper operating parameters has also been studied.

show abstract

Section: Operational Effectsmentioning

confidence: 81%

A Review of Factors Affecting Gasifier Performance

Pathak,

Dhaigude,

Sahu

et al. 2023

ChemBioEng Reviews

View full text Add to dashboard Cite

show abstract

“…The rank of coal is one of the crucial factors controlling the characteristics of the synthesized CNs. A coal structure study showed that low- and medium-ranked coal comprised more functional groups, side chains, bridge bonds, hydrogen bonds, and loose structures, with few layers and small aromatic rings. − As the rank of coal falls, the dense carbon ring structure of coal-based GQDs loosens the hexagonal structure and the content of sp 2 carbons becomes less, producing a vacancy defect. , Low-grade (low-quality) coals are becoming increasingly important in light of the declining coal quality around the world.…”

Section: Synthesis and Structure Of Cns From Coalmentioning

confidence: 99%

Coal-Based Fluorescent Zero-Dimensional Carbon Nanomaterials: A Short Review

Raj

Balachandran

2020

Energy Fuels

View full text Add to dashboard Cite

Carbon nanomaterials (CNs) have fascinated material scientist owing to their outstanding properties, making them potential materials for numerous critical applications. Over the years, scientists have reported several techniques for the production of CNs from distinctive precursors using various top-down and bottom-up approaches. Coal is being proven as an inexpensive, abundant, and effective carbon source for harvesting CNs with unique characteristics, properties, and high production yield. CNs derived from coal exhibit excellent fluorescence property, which can be tuned by varying the degree of oxidation, particle size, surface functionalization, etc. The fluorescent coal-derived CNs are effective materials for label-free bioimaging and selective sensing applications. In this review, we encompass the synthesis of different kinds of CNs from coal, their fluorescence properties, proposed fluorescence mechanisms, factors affecting fluorescence property, and fluorescence sensing and bioimaging applications.

show abstract

“…The strongly source-dependent composition and properties of BOF dust (because of the differences in raw materials and processing conditions used in steelmaking plants) complicate its usage as a coal combustion catalyst. Moreover, the co-occurrence of the above two oxides in raw coal , may have a synergistic effect on the coal combustion process, and the interaction between these two materials may also influence their catalytic effect in fusion agents of the blast furnace smelting process on the coke solution-loss reaction. , Thus, as Fe 2 O 3 and CaO are important components of natural minerals, industrial byproducts, and wastes that can be employed as inexpensive catalysts, it is important to understand the interactions between Fe 2 O 3 and CaO in the catalytic carbon–oxygen reaction to develop better composite catalysts for coal combustion.…”

Section: Introductionmentioning

confidence: 99%

Effects of Fe₂O₃–CaO Interactions in Metallurgical Dust on Its Catalytic Activity for the Carbon–Oxygen Reaction

et al. 2019

View full text Add to dashboard Cite

Various metallurgical dust contains Fe2O3 and CaO, which catalyze the carbon–oxygen reaction and exhibit variable distributions and relative contents. Herein, we probe the interactions between Fe2O3 and CaO in a typical dust collection in the steelmaking process [basic oxygen furnace dust (BOF dust)] and their effects on BOF dust-catalyzed graphite combustion. Evaluation of composite catalysts with several Fe2O3 to CaO ratios and three types of BOF dust shows that high levels of Fe2O3 significantly inhibit the combustion process. These catalysts with variable Fe2O3 to CaO ratios undergo two sintering reactions at carbon–oxygen combustion temperatures of 650–900 °C to afford calcium ferrite (CaO·Fe2O3) or dicalcium ferrite (2CaO·Fe2O3). The former compound features a lower formation temperature and a faster reaction rate than the latter. Analysis of the Fe2O3–CaO binary phase diagram demonstrates that combustion is inhibited in the range of CaO·Fe2O3 formation, whereas increased catalytic activity is observed in the range of 2CaO·Fe2O3 formation, implying that catalyst sintering results in deactivation, and first-principles calculations suggest that the diffusion of carbon in CaO·Fe2O3 is most likely to be the limiting factor for the catalytic reaction. The formation of CaO·Fe2O3 can be suppressed (and hence, catalytic activity can be increased) by reducing the catalyst operating temperature and modulating the distribution ratio.

show abstract

Effect of coal nature on the gasification process

Cited by 14 publications

References 146 publications

A Review of Factors Affecting Gasifier Performance

A Review of Factors Affecting Gasifier Performance

Coal-Based Fluorescent Zero-Dimensional Carbon Nanomaterials: A Short Review

Effects of Fe₂O₃–CaO Interactions in Metallurgical Dust on Its Catalytic Activity for the Carbon–Oxygen Reaction

Contact Info

Product

Resources

About

Effect of coal nature on the gasification process

Cited by 14 publications

References 146 publications

A Review of Factors Affecting Gasifier Performance

A Review of Factors Affecting Gasifier Performance

Coal-Based Fluorescent Zero-Dimensional Carbon Nanomaterials: A Short Review

Effects of Fe2O3–CaO Interactions in Metallurgical Dust on Its Catalytic Activity for the Carbon–Oxygen Reaction

Contact Info

Product

Resources

About

Effects of Fe₂O₃–CaO Interactions in Metallurgical Dust on Its Catalytic Activity for the Carbon–Oxygen Reaction