An experimental investigation into the ignition and combustion characteristics of single droplets of biochar water slurry fuels in air

Zhu, Mingming; Zhang, Zhezi; Zhang, Yang; Liu, Pengfei; Zhang, Dongke

doi:10.1016/j.apenergy.2015.11.087

Cited by 63 publications

(26 citation statements)

References 46 publications

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“…The ignition and combustion behavior of single droplets of slurry fuels made from a coconut shell biochar and pine sawdust biochar was experimentally investigated in paper [130].…”

Section: Energy Sciencesmentioning

confidence: 99%

Clean, efficient and affordable energy for a sustainable future

et al. 2017

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“…The ignition and combustion behavior of single droplets of slurry fuels made from a coconut shell biochar and pine sawdust biochar was experimentally investigated in paper [130].…”

Section: Energy Sciencesmentioning

confidence: 99%

Clean, efficient and affordable energy for a sustainable future

et al. 2017

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“…The main goal of this study was to analyze the possible differences in the combustion parameters for different heating schemes, but with a further decrease in droplet size (R d < 0.2 mm), the processes proceed very quickly and it becomes quite difficult to determine the required characteristics. For this reason, most likely, most researchers use the range 1 ≤ R d ≤ 2 mm [30][31][32] to detail experiments with drops of fuel mixtures.…”

Section: Ignition Delay Timesmentioning

confidence: 99%

Ignition of Slurry Fuel Droplets with Different Heating Conditions

2019

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This paper describes modern research methods of the ignition and combustion processes of slurry fuel droplets. The experiments were carried out using a muffle furnace to ensure the conditions of radiation heating, the hot surface to reproduce the conditions of conductive heating, the high-temperature channel with convective heating, the chamber with the processes of soaring, i.e., a significant increase in the time of fuel residence in the combustion chamber. We identified the differences in combustion modes, threshold ignition temperatures, delay times and durations of combustion processes. We obtained the quantitative differences in the characteristics of the ignition and combustion processes for typical registration methods. It was found that for all heating schemes, the minimum ignition temperatures have comparable values. Minimum ignition delay times were recorded during convective heating. The maximum combustion temperatures were achieved with radiation heating. We determined the values of limiting heat fluxes, sufficient to initiate the combustion of slurries fuels during conductive, convective and radiative heating.

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“…Subsequently, several in-depth research studies were conducted, with emphasis on coal gasification, liquefaction, and combustion. On the other hand, together with these studies, recently, many studies were also conducted on coal-liquid mixtures, which are also called coal-liquid slurries [2]. Many of these production technologies are already commercially available.…”

Section: Introductionmentioning

confidence: 99%

Potential of Coal–Water Slurries as an Alternative Fuel Source during the Transition Period for the Decarbonization of Energy Production: A Review

Nunes

2020

Applied Sciences

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Coal–water slurry or coal–water mixture (CWS or CWM) is a complex solid–liquid dispersion. Several research works have been done concerning the production and use of CWSs being developed worldwide in several different governmental, industrial and academic facilities. In the present paper, studies on the developments achieved in the past three decades with regard to the field mentioned above are systematically reviewed, with particular regard to several different aspects during the combustion process. The structure and properties of the coal are highlighted, as are the different additives used and their adaptability with different types of coal, where the particle size distributions are of great importance in determining both the slurryability of coal and the rheological behavior of a produced CWS for its intended characteristics. At a time when there is much debate about the end of the age of coal as a primary source of thermal and electrical energy, alternative forms of use that can contribute to the reduction of pollutant emissions, as well as particles, in the atmosphere offer alternatives that may allow us to continue using coal, at least during this transition period until a viable alternative is found. In-depth knowledge of these coal slurries may allow, in the future, the development of similar products produced from fuels derived from biomass, such as charcoal or torrefied biomass.

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An experimental investigation into the ignition and combustion characteristics of single droplets of biochar water slurry fuels in air

Cited by 63 publications

References 46 publications

Clean, efficient and affordable energy for a sustainable future

Clean, efficient and affordable energy for a sustainable future

Ignition of Slurry Fuel Droplets with Different Heating Conditions

Potential of Coal–Water Slurries as an Alternative Fuel Source during the Transition Period for the Decarbonization of Energy Production: A Review

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