Physical and numerical modeling of heat-flow processes in tangentially pulverized fuel-fired boiler

• Autorzy: Barański J. , Stąsiek J. , Blasiak W.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of three-dimensional physical modeling and computer simulations of fluid-flow structures, mixing and combustion processes in a 125 MW tangentially fuel-fired boiler and additional fuel - natural gas. This method is commonly called the reburning process, with an emphasis on the reduction of CO, NOx and SOx. The co-firing process is realized between the main coal burners and additional fuel nozzles. To improve the mixing and combustion processes, a physical technique, the so-called acid/alkali technique, is used to optimize the placement and direction of additional air and fuel nozzles. The best result obtained from physical modeling experiments is studied using numerical simulations with the FLUENT commercial code. Numerical modeling results are then used to analyze the performance of an industrial boiler. These results, compared with measurements in a real boiler, seem to be in good agreement with each other.

Słowa kluczowe

EN

combustion; experimental modelling; air pollutants reduction

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2003
• Tom: Vol. 7, No 3
• Strony: 347--362
• Opis fizyczny: Bibliogr. 1 poz., rys., tab.

Twórcy

autor

Barański J.

• Gdańsk University of Technology, Department of Heat Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Stąsiek J.

• Gdańsk University of Technology, Department of Heat Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Blasiak W.

• Royal Instiutute of Technology (KTH), Division of Energy and Furnace Technology, 100 44 Stockholm, Sweden

• Gdańsk University of Technology, Department of Heat Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland,

Bibliografia

• [1] Barański J 2002 Physical and Numerical Modelling of Flow Pattern and Combustion Processin Pulverized Fuel-Fired Boiler, Licentiate Thesis, Department of Materials Science and Engineering, Division of Energy and Furnace Technology, Royal Institute of Technology (KTH), Stockholm, Sweden, ISBN 91-7283-415-3