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

Identyfikatory

DOI

10.30657/pea.2022.28.16

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

combustion processes numerical simulation; lignite; vortex furnace; swirling countercurrent flows

PL

symulacja numeryczna procesów spalania; węgiel brunatny; piec wirowy; wirujące przepływy przeciwprądowe

• Wydawca: Oficyna Wydawnicza Stowarzyszenia Menedżerów Jakości i Produkcji
• Czasopismo: Production Engineering Archives
• Rocznik: 2022
• Tom: Vol. 28, Iss. 2
• Strony: 141--149
• Opis fizyczny: Bibliogr. 32 poz., rys., tab.

Twórcy

autor

Redko Andriy

• Kharkiv National University of Civil Engineering and Architecture, 61002, Kharkiv, st. Sumska, 40, Ukraine

autor

Dzhyoiev Rafael

• Kharkiv National University of Civil Engineering and Architecture, 61002, Kharkiv, st. Sumska, 40, Ukraine

autor

Norchak Volodymyr

• Kharkiv National University of Civil Engineering and Architecture, 61002, Kharkiv, st. Sumska, 40, Ukraine

autor

Pavlovskiiy Serhii

• Kharkiv National University of Civil Engineering and Architecture, 61002, Kharkiv, st. Sumska, 40, Ukraine

autor

Burda Yurii

• Kharkiv National University of Civil Engineering and Architecture, 61002, Kharkiv, st. Sumska, 40, Ukraine

autor

Redko Oleksandr

• Kharkiv National University of Civil Engineering and Architecture, 61002, Kharkiv, st. Sumska, 40, Ukraine

autor

Redko Igor

• Ukrainian State university of railway transport, 61002, 61050, Kharkiv Maidan Feiєrbakh 7, Ukraine

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).