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Heat Transfer Research
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ISSN Print: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v28.i4-6.220
pages 365-370

Coal-Dust Consumption Control in Burners of the Boiler Equippedly the Supply System Rated to High Concentration of Coal Dust

L. A. Kesova
Kiev Polytechnical Institute
Hoang Tien Zung
Kiev Polytechnical Institute
Yu. N. Pobirovskii
Kiev Polytechnical Institute

ABSTRACT

The relationships allowing determining coal-dust consumption in burners based on the pressure drop in the Venturi tube and on the temperature of air-dust mixture were obtained for 300 MW power-generating unit of Tripol'e regional power plant with the TPP-210A boiler. The nomogram is drawn which provides an opportunity to estimate promptly the consumption of dustlike fuel the course of adjusting the uniformity of fuel distribution over the burners and setting the combustion mode in the furnace. The estimates use the degree of opening in the aerated coal-dust supply and the temperature of the aerated mixture. To measure the temperature of the aerated mixture, it is recommended to use a thermocouple with the bare junction placed at a distance of 1-2 pipeline diameters from the end of the diffuser attached to the mixing ejector. The pipeline of the coal-dust supply enters the narrowed part of this ejector.


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