Coal utilization processes and their application to waste recycling and biomass conversion

VANHEEK, K; STROBEL, B; Wanzl, W.

doi:10.1016/0016-2361(94)90250-x

Cited by 33 publications

(15 citation statements)

References 1 publication

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“…Therefore, higher temperatures produce higher quality charcoals, although the process yield diminishes. This effect has been previously observed by us on the pyrolysis of other lignocellulosic residues [23,24], and also by other authors [25].…”

Section: Resultssupporting

confidence: 63%

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Catalytic pyrolysis of exhausted olive oil waste

Martín¹,

González

Martínez³

et al. 2009

Journal of Analytical and Applied Pyrolysis

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Section: Resultssupporting

confidence: 63%

“…The heavy components (tars) are transformed in light products, not condensable, that pass to the gas phase. As a result the HHV of the liquid phase decreases [25].…”

Section: Uncatalyzed Pyrolysis: Influence Of Temperaturementioning

confidence: 97%

Catalytic pyrolysis of exhausted olive oil waste

Martín¹,

González

Martínez³

et al. 2009

Journal of Analytical and Applied Pyrolysis

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“…Low rank coals, lignites, brown coals and subbituminous coals liquefy more readily; however, hydrocarbon yield is limited because of the increasing oxygen content, which forms water and carbon oxides. 178 Also, the liquefaction of Fig. 9 Dependence of conversion on coal rank.…”

Section: Effect Of Coal Rankmentioning

confidence: 99%

Clean liquid fuels from direct coal liquefaction: chemistry, catalysis, technological status and challenges

Vasireddy

Morreale

Cugini

et al. 2011

Energy Environ. Sci.

345

209

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Increased demand for liquid transportation fuels coupled with gradual depletion of oil reserves and volatile petroleum prices have recently renewed interest in coal-to-liquids (CTL) technologies. Large recoverable global coal reserves can provide liquid fuels and significantly reduce dependence on oil imports. Direct coal liquefaction (DCL) converts solid coal (H/C ratio z 0.8) to liquid fuels (H/C ratio z 2) by adding hydrogen at high temperature and pressures in the presence or absence of catalyst. This review provides a comprehensive literature survey of the coal structure, chemistry and catalysis involved in direct liquefaction of coal. This report also touches briefly on the historical development and current status of DCL technologies. Key issues, challenges involved in DCL process and directions for the future research are also addressed.

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“…Gasification refers to a series of processes to produce synthesis gases such as H 2 and CO from all carbonaceous substances, including coal, petroleum coke, heavy residual oil, wastes and biomass [11,12]. Integrated gasification combined cycle (IGCC), which produces synthesis gas for power generation, is known to have higher energy efficiency than existing power generation technologies.…”

Section: Introductionmentioning

confidence: 99%

The effect of additive chemicals on the viscosity of coal-petroleum coke-water slurry fuel for a gasification process

Yoon

Choi

Lee

2009

Korean J. Chem. Eng.

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As a preliminary study for the gasification of an anthracite and petroleum coke mixture, viscosity was measured at various temperatures (20-50 o C), slurry concentrations (60-70 wt%) and additive amounts (0-0.8 wt%) by using an LV-II type viscometer. In addition, four types of different additives, sodium naphthalene sulfonate, poly(methyl methacrylate), polypropylene and a polypropylene glycol based additive, were applied to Korean anthracite, petroleum coke and mixtures of these materials, and the viscosity data were compared. Viscosity dependency values for coal, anthracite, bituminous and sub-bituminous coal, were compared, and it was found that a high content of moisture and particularly ash increases CWS viscosity. The four types of additives tested in this research can effectively diminish the viscosity of coal and especially petroleum coke-water slurry by more than 70% to 95%, respectively. Moreover, the sodium naphthalene sulfonate-based additive reduced the viscosity of coal and petroleum coke-water slurry best, especially at concentrations in excess of 65 wt%. Based on these results, highly loaded slurry created by mixing anthracite and petroleum coke with additives was achieved.

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Coal utilization processes and their application to waste recycling and biomass conversion

Cited by 33 publications

References 1 publication

Catalytic pyrolysis of exhausted olive oil waste

Catalytic pyrolysis of exhausted olive oil waste

Clean liquid fuels from direct coal liquefaction: chemistry, catalysis, technological status and challenges

The effect of additive chemicals on the viscosity of coal-petroleum coke-water slurry fuel for a gasification process

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