- Tytuł:
- Numerical simulation of the processes of burning lignite in a vortex furnace with swirling countercurrent flows
- Autorzy:
-
Redko, Andriy
Dzhyoiev, Rafael
Norchak, Volodymyr
Pavlovskiiy, Serhii
Burda, Yurii
Redko, Oleksandr
Redko, Igor - Powiązania:
- https://bibliotekanauki.pl/articles/26079172.pdf
- Data publikacji:
- 2022
- Wydawca:
- Stowarzyszenie Menedżerów Jakości i Produkcji
- Tematy:
-
symulacja numeryczna procesów spalania
węgiel brunatny
piec wirowy
wirujące przepływy przeciwprądowe
combustion processes numerical simulation
lignite
vortex furnace
swirling countercurrent flows - Opis:
- This work presents the results of a numerical study of the working processes of burning lignite in a vortex furnace with swirling countercurrent flows. The results of computer simulation of the processes of burning lignite with a moisture content of 30%, an ash content of 20% and 35% and a higher calorific value of Qрв = 13.9 MJ/kg and 9.7 MJ/kg, respectively are given. The fields of temperature distribution, gas velocity and particle trajectory in the volume and at the outlet of the furnace are determined. The values of the swirling flow velocity near the exit from the furnace reach 150-170 m/s. Mechanical underburning is 3.7% and 9.4% depending on the ash content. The results of a numerical study have showed that the diameter of lignite particles affects their combustion process: coke particles with an initial diameter from 25 microns to 250 microns burn out by 96%. The furnace provides a complete combustion of pulverized coal particles - 99.8% and of volatiles - 100% at volumetric heat stress in the 2500 kW/m3 furnace. The afterburning of fuel particles containing carbon is ensured by their circulation.
- Źródło:
-
Production Engineering Archives; 2022, 28, 2; 141--149
2353-5156
2353-7779 - Pojawia się w:
- Production Engineering Archives
- Dostawca treści:
- Biblioteka Nauki
Artykuł