The Review of Ignition and Combustion Processes for Water-Coal Fuels

Iegorov, Roman; Стрижак, П. А.; Chernetskiy, M. Yu.

doi:10.1051/epjconf/201611001024

Cited by 15 publications

(7 citation statements)

References 35 publications

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“…We have prepared the fuel composition with low reactivity whose ignition parameters are more or less clear at this moment from the previous investigations [1,17]. The waste-derived coal-water slurry (CWS) was made of the fiter cake of fiery coal (particle size ∼140 µ) [17]. The water content of the slurry was ∼40 wt %.…”

Section: Methodsmentioning

confidence: 99%

Activation of the Fuels with Low Reactivity Using the High-Power Laser Pulses

2018

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In this paper we have proposed the simple and effective approach to activation of the low reactivity industrial fuel which can be used immediately inside the furnace. The high-power laser pulses initiates partial gasification of the fuel together with its ultra-fine atomization. The gas-aerosol cloud surrounding the initial coal-water slurry droplet can consist of approximately 10% (after absorption of hundred pulses) of the initial droplet weight. The ratio of the syngas and aerosol weights is like 1:2 when pulse intensity is higher than 8 J/cm 2 . The size and velocity distributions of the ultra-fine aerosol particles were analysed using the original realization of the particle tracking velocimetry technique.

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Section: Methodsmentioning

confidence: 99%

Activation of the Fuels with Low Reactivity Using the High-Power Laser Pulses

2018

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“…For this aim, a variety of methods have been developed. A number of scientifi c papers focus on the research into CWF combustion with additives of miscellaneous waste in different amounts that are produced by petrochemical, coke chemical, chemical, and wood processing industries (Chen et al, 2011;Glushkov et al, 2016;Iegorov et al, 2016;Jianzhong et al, 2014;Kuznetsov et al, 2016;Valiullin et al, 2017;Zhu et al, 2014).…”

Section: Problem Formulationmentioning

confidence: 99%

“…The experience of their implementation in different countries has demonstrated the prospects of CWFbased technologies for power generation. CWF has a range of advantages (Delyagin et al, 1994;Iegorov et al, 2016), and the main one is the possibility of uing the coal preparation waste of various compositions. Storing such waste is cost-ineffective and environmentally unfriendly.…”

Section: Introductionmentioning

confidence: 99%

“…In the process of CWF production, the solid fraction, if necessary, can be significantly modifi ed to increase the heat of coal matter combustion. Viscosity reducers and stabilizers, corrosion inhibitors, and other additives can also be used in the process of CWF production (Beloselskyi and Baryshev, 1989;Iegorov et al, 2016;Khodakov, 2007;Serant et al, 2011;Solodov et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation of the Influence of Temperature, Coal Metamorphic Stage, and of the Size of Coal–water Fuel Drop on the Fuel Drop Combustion Process

Pinchuk

Sharabura

Moumane

et al. 2019

Inter J Ener Clean Env

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The experimental investigation carried out allowed one to determine the infl uence of the source coal grade, oven medium temperature, and of the CWF drop size on time and temperature correlations characterizing the process of individual fuel drop combustion in static air. It has been established that shortening of the total time of CWF drops combustion related to the oven medium temperature increase and the drop size decrease is governed by a power function. In identical conditions, the time of CWF drops combustion is shortened signifi cantly, when anthracite is replaced by the brown source coal. The research and processing of the obtained experimental data allowed establishing empirical dependences of the CWF drop combustion time on volatile content in the source coal, and on drops sizes, taking into account the oven medium temperature and the source coal grade. It was found that in the equation describing the dependence of the combustion time on the drops sizes the exponent of the size is equal to 1.6 and does not depend on the coal grade and oven medium temperature.

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“…This works well for the calculation of macroscopic flows with free surface [6][7][8][9]. The idea of the method is that the liquid and gas are treated as a single two-component medium and the spatial distribution of the phases within the computational domain is determined using a marker function F(x,y,z,t,), which value specifies the volume fraction of the liquid phase in the computational cell as follows: …”

Section: Mathematical Modelmentioning

confidence: 99%

Numerical Study of Deformation Drops of Water in Gas Stream

Shebeleva

Chernetskiy

2016

MATEC Web Conf.

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Abstract.Mathematical model developed on basis of experimental data about processes of deformation organohydrocarbon drops of fuel in stream of oxidant. Numerical investigation of integral characteristics of deformation of droplet organohydrocarbon fuel with size of drops -4.5 mm , speed of oxidant -2 m / s, temperature of 298 K has been completed (in accordance with the conditions of the experiment). Specific change of surface longitudinal and cross section and of organohydrocarbon drops of fuel during its gravity precipitation in time has been shown. It showed satisfactory agreement theoretical and experimental data. The developed model is the basis for solving problem of collapse (crushing) of drops of coal-water and organohydrocarbon slurry during their motion in a gaseous medium at a subsonic speed.

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The Review of Ignition and Combustion Processes for Water-Coal Fuels

Cited by 15 publications

References 35 publications

Activation of the Fuels with Low Reactivity Using the High-Power Laser Pulses

Activation of the Fuels with Low Reactivity Using the High-Power Laser Pulses

Experimental Investigation of the Influence of Temperature, Coal Metamorphic Stage, and of the Size of Coal–water Fuel Drop on the Fuel Drop Combustion Process

Numerical Study of Deformation Drops of Water in Gas Stream

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