OPTIMIZATION OF THE SOLID FUEL COMBUSTION PROCESS IN COMBUSTION CHAMBERS IN ORDER TO REDUCE HARMFUL EMISSIONS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00338703" target="_blank" >RIV/68407700:21220/19:00338703 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.32014/2019.2518-1726.71" target="_blank" >https://doi.org/10.32014/2019.2518-1726.71</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.32014/2019.2518-1726.71" target="_blank" >10.32014/2019.2518-1726.71</a>

Result language

angličtina

Original language name

OPTIMIZATION OF THE SOLID FUEL COMBUSTION PROCESS IN COMBUSTION CHAMBERS IN ORDER TO REDUCE HARMFUL EMISSIONS

Original language description

The methods of numerical simulation are used to study the processes of heat and mass transfer in the combustion chamber of an operating coal-burning Kazakhstan thermal power plant. Computational experiments were performed on the combustion of high-ash Karaganda coal in the combustion chamber of the BKZ-75 boiler (Shakhtinsk, Karaganda region). As a result of numerical simulation of the combustion processes, the distributions of the total velocity vector, temperature fields, concentration fields of nitrogen oxides NO over the entire volume of the combustion chamber and at its exit were obtained. A comparative analysis of the characteristics of heat and mass transfer processes for the two studied modes of supplying fuel to the combustion chamber through burner devices is given for the direct-flow method of supplying the mixture when the burners are located on opposite side walls and the vortex method of supplying the mixture when the burners are installed at a 30-degree angle from the center of symmetry of the boiler. It is shown that the vortex method of supplying air mixtures allows optimizing the combustion of high-ash coal, since in this case there is an increase in temperature in the core of the torch and a decrease in it at the exit from the combustion chamber, which has a significant effect on the chemical processes of the formation of combustion products. The average value of the concentration of nitrogen oxide NO at the outlet of the combustion chamber decreases when using burner devices with a swirl of the mixture flow and conforms to norms the maximum permissible concentration.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20303 - Thermodynamics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

NEWS OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHSTAN-SERIES PHYSICO-MATHEMATICAL

ISSN

1991-346X

e-ISSN

2518-1726

Volume of the periodical

6

Issue of the periodical within the volume

328

Country of publishing house

KZ - KAZAKSTAN

Number of pages

9

Pages from-to

34-42

UT code for WoS article

000503371300004

EID of the result in the Scopus database

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