Enhancement of Pulverized Coal Combustion by Plasma Technology

Gorokhovski, Mikhael; Jankoski, Zlatko; Lockwood, F.C.; Карпенко, Е. И.; Мессерле, В. Е.; Устименко, А. Б.

doi:10.1080/00102200701386115

Cited by 48 publications

(22 citation statements)

References 4 publications

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“…The PFSs were designed and engineered using two computer-codes, the 1-D plasma-coal [4] considering the detailed mechanism of kinetics of thermo-chemical transformations of fuel in the two-phase flow with a plasma source, and CFD Cinar integrated CFD environment (Cinar ICE) [4], [10], [13] considering the real geometry of the furnace, turbulence of the environment, and kinetics of coal particles combustion based on the fast chemistry model. The computer code plasma-coal gives the solution of a nonlinear set of differential equations of a relatively large dimension, using the Gear's method for solution of the stiff systems of chemical kinetics equations.…”

Section: Numerical Experimentsmentioning

confidence: 99%

“…However, as the plasma source was included in the model experimentally, the impact of electrons and metastable species was accounted implicitly. The validity of the plasma-coal code was verified for plasmaaided coal processing in different oxidants [4], [9], [12]. The program Cinar ICE [4], [13] is intended for physical modeling and calculation of hydrodynamics, heat, and mass transfer and combustion of fuels in the 3-D space of furnaces.…”

Section: Numerical Experimentsmentioning

confidence: 99%

“…The validity of the plasma-coal code was verified for plasmaaided coal processing in different oxidants [4], [9], [12]. The program Cinar ICE [4], [13] is intended for physical modeling and calculation of hydrodynamics, heat, and mass transfer and combustion of fuels in the 3-D space of furnaces. The mathematical model and the program realizing it rest on the most widespread method based on the Euler approach to the description of motion and heat and mass transfer of the gas phase and Lagrange approach describing motion and heat and mass transfer of individual fuel particles over their trajectory.…”

Section: Numerical Experimentsmentioning

confidence: 99%

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Plasma-Aided Coal Ignition and Combustion: Modeling and Full-Scale Trials

Мессерле¹,

Устименко²

2014

IEEE Trans. Plasma Sci.

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Applications of the modern plasma technology for solid fuel ignition and combustion are presented. This technology provides a more efficient and environmentally friendly low-rank coal incineration. To implement this technology at coalfired thermal power plants, plasma-fuel systems (PFSs) were developed. The PFS is a pulverized coal burner equipped with an arc plasma generator producing a high temperature air stream of 4000°C-6000°C. The PFS technology is plasma thermo-chemical preparation of coal for burning. It includes plasma heating of air-coal mixture up to the temperatures, when coal volatiles are released and partial gasification of char carbon occurs. To show the advantages of plasma-aided coal combustion as compared with the conventional one, the numerical simulation of the process was carried out. The numerical modeling was performed for the low-rank bituminous coal of 40% ash content incinerated at a boiler of 420-t/h steam productivity. Full-scale trials of the plasma-aided combustion confirmed the possibility of high-ash coal ignition in the cold furnace without heating of primary air.

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Section: Numerical Experimentsmentioning

confidence: 99%

Section: Numerical Experimentsmentioning

confidence: 99%

Section: Numerical Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

Plasma-Aided Coal Ignition and Combustion: Modeling and Full-Scale Trials

Мессерле¹,

Устименко²

2014

IEEE Trans. Plasma Sci.

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“…Various investigators have reported studies on oil-free ignition burners. Gorokhovski et al [6] and Masaya et al [7] studied the stabilization of pulverized-coal combustion using a plasmaassisted burner, while Kanilo et al [8] investigated the ignition and combustion of pulverized coal using a microwave-assisted burner. In China, Zhang et al [9] described their application of plasma ignition technology in bituminous coal-fired boilers.…”

Section: Introductionmentioning

confidence: 99%

Bituminous coal combustion in a full-scale start-up ignition burner: Influence of the excess air ratio

Liu¹,

Li²,

Kong³

et al. 2010

Energy

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“…At the same time, the available results of the gas-dispersed systems combustion show the effectiveness of this approach in the dispersed fuel conversion in energetics. For example, to intensify the burning of coals and the fl ame stabilization in the industrial furnaces using the plasmatron [2] or to produce hydrogen from the combustion of the particles in the aluminum steam [3]. In [3] it is shown that the rate of the reaction of aluminum with water vapor in a nonequilibrium plasma is by 2-3 orders of magnitude greater than the rate of reaction without the plasma, i.e.…”

Section: Introductionmentioning

confidence: 99%

Energy and Technological Aspects of the Combustion of Ionized Gas-Dispersed Systems

Poletaev¹,

Шевчук²,

Khlebnikova³

2016

Eur Chem Tech J

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This paper discusses the fl ame ionization effect on the combustion processes in gaseous suspensions of the dispersed fuels. It is shown that the two-phase fl ame ionization affects almost all the processes of the fuel conversion -kinetics of the dispersed fuel combustion, processes of the interphase heat and mass transfer, processes of the nucleation and coagulation in the fl ame, formation of nanoscale products of the metal particles combustion. It is shown that the electrostatic interaction between the charged nanoparticles and ions or polar molecules in the gaseous phase leads to the appearance of molecular "pumps" that can signifi cantly change the kinetics of the heterogeneous chemical reactions and the heat exchange between particles and gas. The infl uence of the thermal ionization of the fl ame on the nucleation mechanism and rate in gas-dispersed systems is discussed. The possibility of a barrier-free homogenous and heterogeneous nucleation in the dusty fl ame of metallic particles is shown. The effect of electrostatic and polarizing interactions of ions and molecules on the kinetics of the ternary gas-phase reactions is considered. The infl uence of the monodisperse aerosol ionization degree on the kinetics of its coagulation is analyzed. It is concluded that electrostatic interaction between the particles strongly affects the inhibition of the coagulation process in gas-phase combustion products and the possibility of very fast (explosive) charged particle coagulation of monodisperse aerosols. The possibility of the targeted size of metal oxides nanoparticles control, controlled ionizing of dusty fl ames and the role of ion particle entrainment, the dependency of their size of the fl ame ionization degree are discussed. Some effects arising in complex plasma of condensed combustion products under its own electric fi elds in fl ames, also when the burning dust is entrained into a constant electric fi eld and their practical applications for diagnosis are considered.

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Enhancement of Pulverized Coal Combustion by Plasma Technology

Cited by 48 publications

References 4 publications

Plasma-Aided Coal Ignition and Combustion: Modeling and Full-Scale Trials

Plasma-Aided Coal Ignition and Combustion: Modeling and Full-Scale Trials

Bituminous coal combustion in a full-scale start-up ignition burner: Influence of the excess air ratio

Energy and Technological Aspects of the Combustion of Ionized Gas-Dispersed Systems

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