Effect of Methane on Combustion of Glycerol and Methanol Blends Using a Novel Swirl Burst Injector in a Model Dual-Fuel Gas Turbine Combustor
Glycerol, a byproduct of biodiesel, has moderate energy but high viscosity, making clean combustion challenging. Quickly evaporating fine fuel sprays mix well with air and burn cleanly and efficiently. Unlike conventional air-blast atomizers discharging a jet core/film, a newly developed swirl burst...
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MDPI AG
2024-10-01
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| author | S. M. Rafiul Islam Ishaan Patel Lulin Jiang |
| author_facet | S. M. Rafiul Islam Ishaan Patel Lulin Jiang |
| author_sort | S. M. Rafiul Islam |
| collection | DOAJ |
| description | Glycerol, a byproduct of biodiesel, has moderate energy but high viscosity, making clean combustion challenging. Quickly evaporating fine fuel sprays mix well with air and burn cleanly and efficiently. Unlike conventional air-blast atomizers discharging a jet core/film, a newly developed swirl burst (SB) injector generates fine sprays at the injector’s immediate exit, even for high-viscosity fuels, without preheating, using a unique two-phase atomization mechanism. It thus resulted in ultra-clean combustion for glycerol/methanol (G/M) blends, with complete combustion for G/M of 50/50 ratios by heat release rate (HRR). Lower combustion efficiencies were observed for G/M 60/40 and 70/30, representing crude glycerol. Hence, this study investigates the effect of premixed methane amount from 0–3 kW, and the effect of atomizing gas to liquid mass ratio (ALR) on the dual-fuel combustion efficiency of G/M 60/40-methane in a 7-kW lab-scale swirl-stabilized gas turbine combustor to facilitate crude glycerol use. Results show that more methane and increased ALR cause varying flame lift-off height, length, and gas product temperature. Regardless, mainly lean-premixed combustion, near-zero CO and NOx emissions (≤2 ppm), and ~100% combustion efficiency are enabled for all the cases by SB atomization with the assistance of a small amount of methane. |
| format | Article |
| id | doaj-art-e25577c67d404ed5ace2c9610e9c7550 |
| institution | DOAJ |
| issn | 2571-8797 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | Clean Technologies |
| spelling | doaj-art-e25577c67d404ed5ace2c9610e9c75502025-08-20T02:43:29ZengMDPI AGClean Technologies2571-87972024-10-01641445146410.3390/cleantechnol6040069Effect of Methane on Combustion of Glycerol and Methanol Blends Using a Novel Swirl Burst Injector in a Model Dual-Fuel Gas Turbine CombustorS. M. Rafiul Islam0Ishaan Patel1Lulin Jiang2Department of Mechanical Engineering, Baylor University, Waco, TX 76798, USADepartment of Mechanical Engineering, Baylor University, Waco, TX 76798, USADepartment of Mechanical Engineering, Baylor University, Waco, TX 76798, USAGlycerol, a byproduct of biodiesel, has moderate energy but high viscosity, making clean combustion challenging. Quickly evaporating fine fuel sprays mix well with air and burn cleanly and efficiently. Unlike conventional air-blast atomizers discharging a jet core/film, a newly developed swirl burst (SB) injector generates fine sprays at the injector’s immediate exit, even for high-viscosity fuels, without preheating, using a unique two-phase atomization mechanism. It thus resulted in ultra-clean combustion for glycerol/methanol (G/M) blends, with complete combustion for G/M of 50/50 ratios by heat release rate (HRR). Lower combustion efficiencies were observed for G/M 60/40 and 70/30, representing crude glycerol. Hence, this study investigates the effect of premixed methane amount from 0–3 kW, and the effect of atomizing gas to liquid mass ratio (ALR) on the dual-fuel combustion efficiency of G/M 60/40-methane in a 7-kW lab-scale swirl-stabilized gas turbine combustor to facilitate crude glycerol use. Results show that more methane and increased ALR cause varying flame lift-off height, length, and gas product temperature. Regardless, mainly lean-premixed combustion, near-zero CO and NOx emissions (≤2 ppm), and ~100% combustion efficiency are enabled for all the cases by SB atomization with the assistance of a small amount of methane.https://www.mdpi.com/2571-8797/6/4/69swirl burst (SB) injectorlean-premixed combustiondual-fuel combustionhigh viscositynear-zero emissions |
| spellingShingle | S. M. Rafiul Islam Ishaan Patel Lulin Jiang Effect of Methane on Combustion of Glycerol and Methanol Blends Using a Novel Swirl Burst Injector in a Model Dual-Fuel Gas Turbine Combustor Clean Technologies swirl burst (SB) injector lean-premixed combustion dual-fuel combustion high viscosity near-zero emissions |
| title | Effect of Methane on Combustion of Glycerol and Methanol Blends Using a Novel Swirl Burst Injector in a Model Dual-Fuel Gas Turbine Combustor |
| title_full | Effect of Methane on Combustion of Glycerol and Methanol Blends Using a Novel Swirl Burst Injector in a Model Dual-Fuel Gas Turbine Combustor |
| title_fullStr | Effect of Methane on Combustion of Glycerol and Methanol Blends Using a Novel Swirl Burst Injector in a Model Dual-Fuel Gas Turbine Combustor |
| title_full_unstemmed | Effect of Methane on Combustion of Glycerol and Methanol Blends Using a Novel Swirl Burst Injector in a Model Dual-Fuel Gas Turbine Combustor |
| title_short | Effect of Methane on Combustion of Glycerol and Methanol Blends Using a Novel Swirl Burst Injector in a Model Dual-Fuel Gas Turbine Combustor |
| title_sort | effect of methane on combustion of glycerol and methanol blends using a novel swirl burst injector in a model dual fuel gas turbine combustor |
| topic | swirl burst (SB) injector lean-premixed combustion dual-fuel combustion high viscosity near-zero emissions |
| url | https://www.mdpi.com/2571-8797/6/4/69 |
| work_keys_str_mv | AT smrafiulislam effectofmethaneoncombustionofglycerolandmethanolblendsusinganovelswirlburstinjectorinamodeldualfuelgasturbinecombustor AT ishaanpatel effectofmethaneoncombustionofglycerolandmethanolblendsusinganovelswirlburstinjectorinamodeldualfuelgasturbinecombustor AT lulinjiang effectofmethaneoncombustionofglycerolandmethanolblendsusinganovelswirlburstinjectorinamodeldualfuelgasturbinecombustor |