3d Modeling of Combustion Thermochemical Activated Fuel

Аскарова, А.С.; Šafařík, Pavel; Максимов, В. А.; Bolegenova, S.А.; Nugymanova, Aizhan

doi:10.32014/2019.2518-1726.7

Cited by 5 publications

(5 citation statements)

References 14 publications

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“…A steam boiler with a capacity of 75 t/h burns high-ash Karaganda coal (ash content 35.10%), is equipped with four pulverized coal burners, two burners from the front and from the rear in one tier. A more detailed description of the boiler combustion chamber, mathematical model, solution method, application package is given in the following works [19][20][21][22][23][24][25][26]. The general view of the combustion chamber of the BKZ-75 boiler (figure 1a) and the arrangement of burners and injectors for the implementation of the technology of two-stage fuel combustion (figure 1b) is shown in figure 1a [27][28].…”

Section: Description Of the Combustion Chamber For Conducting Computamentioning

confidence: 99%

Use of Two-Stage Fuel Combustion Technology to Minimize Hazardous Emissions at Kazakhstan TPP

Аскарова¹,

Šafařík²,

Bolegenova³

et al. 2021

News of NAS RK. SPh-M

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Studies have been carried out using numerical modeling methods to determine the effect of the introduction of a two-stage combustion technology (OFA technology) of high-ash Karaganda coal on the characteristics of combustion processes: aerodynamics of flows, temperature and concentration (COх, NOх) fields throughout the entire volume of the combustion chamber of the BKZ-75 boiler at Shakhtinskaya TPP and at the outlet from it. Comparison with the basic regime of combustion of pulverized coal fuel, when there is no air supply through additional injectors (OFA = 0%). To implement the technology of two-stage combustion, various regimes of additional air supply through injectors were chosen: OFA equals 0% (basic version, conventional combustion), 5%, 10%, 15%, 18%, 20%, 25% and 30% of total air volume required for fuel combustion. A comparative analysis of the main characteristics of the heat and mass transfer process in the combustion chamber for the investigated modes is carried out. It is shown that an increase in the volume of additional air supplied through the injectors up to 18% leads to a decrease in the concentration of nitrogen oxide NO by 25% in comparison with traditional combustion. A further increase in the volume of additional air leads to a deterioration in these indicators. The results obtained will make it possible to optimize the combustion of low-grade fuel in the combustion chamber of the BKZ-75 boiler, increase the efficiency of fuel burnout, reduce harmful emissions and introduce a two-stage combustion technology at other coal-fired TPPs.

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Section: Description Of the Combustion Chamber For Conducting Computamentioning

confidence: 99%

Use of Two-Stage Fuel Combustion Technology to Minimize Hazardous Emissions at Kazakhstan TPP

Аскарова¹,

Šafařík²,

Bolegenova³

et al. 2021

News of NAS RK. SPh-M

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“…The combustion chamber of the BKZ-75 boiler of the Shakhtinskaya TPP (Shakhtinsk, Kazakhstan) was selected for numerical experiments to suppress nitrogen and carbon oxides using OFA technologies [17][18][19][20][21][22][23][24]. Various modes of supplying additional air to the combustion chamber of the BKZ-75 boiler through OFA injectors were studied: OFA=0% (basic version), OFA=10% and OFA=18%.…”

Section: Object Of Researchmentioning

confidence: 99%

Research of Characteristics of Heat and Mass Transfer at the Introduction of Technology of Steps Fuel Burning on the BKZ-75 Boiler of the Shakhtinskaya TPP

Šafařík¹,

Bolegenova²,

Tuyakbaev³

et al. 2020

OF THE NATIONAL ACADEMY OFSCIENCES OF THE REPUBLIC OF KAZAKHSTA

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“…For conducting numerical experiments, the combustion chamber of the BKZ-75 boiler was installed at the Shakhtinskaya TPP (Shakhtinsk, Kazakhstan), in which Karaganda coal with an ash content of 35.1% is burned. Steam boiler BKZ-75 -vertically water-tube, productivity 75 t/h (51.45 Gcal/h) [22][23][24][25][26][27]. The boiler is equipped with four pulverized coal burners installed in two burners from the front and from the rear in one tier.…”

Section: Description Of the Combustion Chamber For Conducting Computamentioning

confidence: 99%

Optimization of the Solid Fuel Combustion Process in Combustion Chambers in Order to Reduce Harmful Emissions

Šafařík

Аскарова

Bolegenova

et al. 2019

OF THENATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHSTA

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3d Modeling of Combustion Thermochemical Activated Fuel

Cited by 5 publications

References 14 publications

Use of Two-Stage Fuel Combustion Technology to Minimize Hazardous Emissions at Kazakhstan TPP

Use of Two-Stage Fuel Combustion Technology to Minimize Hazardous Emissions at Kazakhstan TPP

Research of Characteristics of Heat and Mass Transfer at the Introduction of Technology of Steps Fuel Burning on the BKZ-75 Boiler of the Shakhtinskaya TPP

Optimization of the Solid Fuel Combustion Process in Combustion Chambers in Order to Reduce Harmful Emissions

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