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

Šafařík, Pavel; Bolegenova, S.А.; Tuyakbaev, A.A.; Максимов, В. А.; Nugymanova, Aizhan; Shortanbaeva, Zh.K.

doi:10.32014/2020.2518-1726.19

Cited by 1 publication

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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]. The technology of two-stage fuel combustion is carried out by installing secondary and even tertiary holes (OFA-injectors) to supply additional air above the main combustion zone, when a reduction and afterburner zone is formed in the combustion chamber.…”

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

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

Self Cite

View full text Add to dashboard Cite

show abstract

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

Cited by 1 publication

References 13 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

Contact Info

Product

Resources

About