Affordable Access

Access to the full text

3D simulation of heat and mass transfer for testing of “clean energy” production technologies

Authors
  • Messerle, V. E.1, 2, 3
  • Askarova, A. S.1, 2
  • Bolegenova, S. A.1, 2
  • Maximov, V. Yu.1
  • Bolegenova, S. A.2
  • Nugymanova, A. O.1
  • 1 Al-Farabi Kazakh National University, Almaty, Kazakhstan , Almaty (Kazakhstan)
  • 2 Research Institute Experimental and Theoretical Physics, Almaty, Kazakhstan , Almaty (Kazakhstan)
  • 3 Kutateladze Institute of Thermophysics, Novosibirsk, Russia , Novosibirsk (Russia)
Type
Published Article
Journal
Thermophysics and Aeromechanics
Publisher
Kutateladze Institute of Thermophysics SB RAS
Publication Date
Mar 01, 2021
Volume
28
Issue
2
Pages
271–280
Identifiers
DOI: 10.1134/S0869864321020104
Source
Springer Nature
Keywords
Disciplines
  • Article
License
Yellow

Abstract

The paper describes a study of the influence of Overfire Air (OFA) technology on heat and mass transfer parameters for a furnace chamber in the BKZ-75 boiler at the Shakhtinsk power plant (Kazakhstan); this plant is fueled with Karaganda high-ash coal. The computer simulation methods were applied for studying different air supply regimes through the air injectors operating in OFA design with different contributions: 0 (reference variant), 5, 10, 15, 18, and 20 %. The computer simulation of in furnace processes offers the distribution for total velocity vector, tempertaure field, NO2 concentration field for the entire furnace and the exit zone. The study demonstrated that the operation with air injection at 18 % of OFA is optimal for combustion of high-ash coal. This operation mode offers a higher tempertaure at the flame core and a gradual tempertaure reduction at the chamber outlet; the latter feature is significant for chemistry of combustion products. The boiler under this operation mode offers a reduction of nitrogen oxide NO2 emissions from the furnace.

Report this publication

Statistics

Seen <100 times