Numerical evaluation of pulverized coal swirling flames and NOx emissions in a coal-fired boiler: effects of co-and counter-swirling flames and coal injection modes

M Choi, Y Park, X Li, K Kim, Y Sung, T Hwang, G Choi - Energy, 2021 - Elsevier
A numerical evaluation was performed to investigate the effects of swirl arrangement (co-
swirling and counter-swirling flows) and coal injection mode (non-, fully-, and partially …

Experimental investigations on central vortex core in swirl spray flames using high-speed laser diagnostics

C Zhang, C Tao, H Song, X Han, L Li, X Liu, F Qi - Physics of Fluids, 2023 - pubs.aip.org
Centrally staged swirl combustion can effectively reduce NO x emission. However, the
complex combustion field is susceptible to producing large-scale coherent structures, such …

Investigation of transfer processes in swirling flows in application to vortex furnaces for coal fuel

SV Alekseenko, IS Anufriev, AA Dekterev… - International Journal of …, 2021 - Elsevier
In this work, the swirling flow structure was studied experimentally and numerically in a wide
range of operating parameters at a laboratory model of the promising furnace of pulverized …

Effects of air swirl on the combustion and emissions characteristics of a cylindrical furnace fueled with diesel-biodiesel-n-butanol and diesel-biodiesel-methanol …

M Amiri, A Shirneshan - Fuel, 2020 - Elsevier
In this research, the effects of air swirling on the emission and combustion characteristics of
a cylindrical furnace fueled with various diesel-biodiesel-n-butanol and diesel-biodiesel …

Effect of exhaust tube vortex on NOx reduction and combustion characteristics in a swirl-stabilized pulverized coal flame

K Kim, M Choi, X Li, K Deng, Y Park, Y Sung, G Choi - Fuel, 2020 - Elsevier
Experimental investigations were conducted on the effect of the exhaust tube vortex (ETV)
and the synergistic effect of the ETV and air staging on nitrogen oxide (NO) concentration …

Combined flow, temperature and soot investigation in oxy-fuel biomass combustion under varying oxygen concentrations using laser-optical diagnostics

H Schneider, M Bonarens, J Hebel, H Hamel, J Emmert… - Fuel, 2024 - Elsevier
In pulverized oxy-fuel biomass combustion, intricate interaction of complex fluid-mechanical,
particle-dynamical, and chemical processes manifests even at intermediate scales. This …

Experimental investigation of 40 kWth methane-assisted and self-sustained pulverized biomass flames

B Özer, D Zabrodiec, R Kneer, A Maßmeyer - Proceedings of the …, 2023 - Elsevier
This paper presents an assessment of the effects of methane assistance on pulverized
biomass swirl flames specifically regarding flow fields and flame structure. Experiments are …

Strategic combustion technology with exhaust tube vortex flame: Combined effect of biomass co-firing and air-staged combustion on combustion characteristics and …

M Choi, K Kim, X Li, K Deng, Y Park, M Seo, Y Sung… - Energy, 2020 - Elsevier
A 16-kW th coal-fired furnace with a dual swirl burner was constructed to investigate the
combustion characteristics with/without an exhaust tube vortex (ETV) flame, the combined …

Study on flame structures and emission characteristics according to various swirl combinations and fuel compositions in a CH4/H2/CO syngas swirl-stabilized …

M Choi, Y Park, X Li, Y Sung, S Park, K Moon, G Choi - Fuel, 2019 - Elsevier
In an integrated gasification combined cycle (IGCC) power plant, the initial operating
procedure is driven by natural gas first, and then by H 2/CO syngas. This study attempted to …

Effects of pulverized coal particle size on flame structure in a methane-assisted swirl burner

X Li, M Choi, K Kim, Y Park, Y Sung, M Muramatsu… - Fuel, 2019 - Elsevier
The effects of the particle sizes of pulverized coal on the flame structure in a coal fire plant
were studied experimentally. This study mainly focused on the inner recirculation zone (IRZ) …