STUDYING OF UNEVEN CONCENTRATION OF THE COAL DUST PARTICLES IN HORIZONTAL DIRECT-FLOW CHANNEL OF THE THERMOCHEMICAL FUEL PREPARATION REACTOR

Details

Parent Category: Geo-Technical Mechanics, 2013

Category: Geo-Technical Mechanics, 2013, Issue 109

UDC 622.653-097

Authors:

A.I. Voloshin, Cor. Member NASU, D. Sc. (Tech.), Professor,

A.V. Zhevzhik, Ph.D. (Tech.), Associate Professor

(IGTM NAS of Ukraine)

V.N. Goriachkin,  Ph.D. (Tech.), Associate Professor

I. Yu. Potapchuk, M.S (Tech.)

(DNURT)

Abstract.

Purpose of this research is to determine gravity-induced changes in distribution of particles of coal dust in horizontal cylindrical direct-flow channel of thermochemical fuel preparation reactor. To this end, forces impacting the particles were analyzed; a method was established for calculating the particle concentration; effect of the particle deposition and their distribution in the cross section of the reactor channel over its length was defined; portion of particles settling down on the walls of the channel was determined depending on the fuel mixture temperature and flow rate.

It was determined that increased temperature of the fuel mixture flow reduced quantity of particles settled down on the bottom of the channel and, further, reduced rate of slag formation. The findings can be used for mathematical modeling and optimization of thermochemical preparation and gasification of the solid fuels.

Keywords:

thermochemicalfuelpreparation, movement of particles, coal dust, particle concentration, direct-flow channel.

References:

1. Bulat, A.F, Voloshin, A.I. and Kudinov, P.I. (2003), “Numerical and experimental research of heat and mass transfer at the depending of coal dust fuel burning”, Promishlennaia teplotehnika, vol. 25, no. 4, pp. 26-28.

2. Korchevoj, J. P., Kukota, J.P., Dunajevskaja, N.I., Nehamin, M.M., Bondzyk, D.L. and Dedov, V.G. (2009) “Creation and preparation to experimental operation of pilot burners for boilers with pulverized high ash anthracite”, Nauka ta innovatsii, vol. 5, no. 4, pp. 13-21.

3. Bondzyk, D.L. (2012), Preliminary heat treatment of low-reactive coal for its pulverized combustion, Abstract Ph.D. dissertation, 05.15.06 «Technical  thermo-physics and industrial heat engineering», The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv, Ukraine.

4. Zhevzhik, A.V., Goriachkin, V.N. and Potapchuk, I.Yu. (2011), “Study of air mixture particle motion in the secondary air helix of coal dust burner”, Systemni tehnologii, no. 5 (76), pp. 109-116.

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About the authors:

Voloshin Alexey Ivanovich, Corresponding Member of the National Academy of Science of Ukraine, Doctor of Technical Sciences (D. Sc), Professor, Deputy Director, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Zhevzhik Alexandr Vladislavovich, Candidate of Technical Sciences (Ph.D), Associate Professor, Senior Researcher in Department of Mechanics of Vibratory Transporting Systems and Complexes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Goriachkin Vadim Nikolaevich, Candidate of Technical Sciences (Ph.D), Associate Professor, Associate Professor at the Department of Heat Engineering, Dnepropetrovsk National University of Railway Transport named after Academician V. Lazaryan (DNURT), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Potapchuk Irina Yur'evna, Master of Science, Assistant at the Department of Heat Engineering, Dnepropetrovsk National University of Railway Transport named after Academician V. Lazaryan (DNURT), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

 

 

 

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