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Design and Experimental Characterization of a Swirl-Stabilized Combustor for Low Calorific Value Gaseous Fuels

Dybe, S. and Bluemner, R. and Zhang, K. and Schimek, S. and Duwig, C. and Stathopoulos, P. and Paschereit, C. O. and Bartlett, M. (2021) Design and Experimental Characterization of a Swirl-Stabilized Combustor for Low Calorific Value Gaseous Fuels. Journal of Engineering for Gas Turbines and Power, 144 (2). American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4049642. ISSN 0742-4795.

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Official URL: https://doi.org/10.1115/1.4049642


Low calorific value (LCV) gaseous fuels are generated as by-products in many commercial sectors, e.g., as mine gas or biogas. Their efficient exploitation can be a considerable source of primary energy. Typically, product gases from biomass are characterized by low lower heating values (LHVs) due to their high concentration of inert gases and steam. At the same time, their composition varies strongly based on the initial feedstock and may contain unwanted components in the form of tars and ammonia. These properties make the design of appropriate combustion systems very challenging and issues such as ignition, flame stability, emission control, and combustion efficiency must be accounted for. By employing a proprietary gas turbine burner at the TU Berlin, the combustion of an artificial LCV gas mixture at stoichiometric conditions has been successfully demonstrated for a broad range of steam content in the fuel. This work presents the stability maps and emissions measured with the swirl-stabilized burner at premixed conditions. It was shown that the flame location and shape primarily depend on the steam content of the LCV gas. The steam content in the fuel was increased until flame blow-out occurred at LHVs well below the target condition of 2.87 MJ/kg (2.7 MJ/mN3). The exhaust gas is analyzed in terms of the pollutants NOx and CO for different fuel compositions, moisture contents, and thermal powers. Finally, OH* measurements have been carried out in the flame. A simple reactor network simulation was used to confirm the feasibility of the experimental results.

Item URL in elib:https://elib.dlr.de/147767/
Document Type:Article
Title:Design and Experimental Characterization of a Swirl-Stabilized Combustor for Low Calorific Value Gaseous Fuels
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Dybe, S.Chair of Fluid Dynamics, Technische Universitat BerlinUNSPECIFIEDUNSPECIFIED
Bluemner, R.Chair of Pressure Gain Combustion, Technische Universitat BerlinUNSPECIFIEDUNSPECIFIED
Schimek, S.Chair of Fluid Dynamics, Technische Universitat BerlinUNSPECIFIEDUNSPECIFIED
Date:15 January 2021
Journal or Publication Title:Journal of Engineering for Gas Turbines and Power
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:American Society of Mechanical Engineers (ASME)
Keywords:Combustion, Design, Emissions, Flames, Fuels, Nitrogen oxides, Steam, Combustion chambers, Gaseous fuels, Temperature, Shapes, Exhaust systems
HGF - Research field:Energy
HGF - Program:Energy System Design
HGF - Program Themes:Digitalization and System Technology
DLR - Research area:Energy
DLR - Program:E SY - Energy System Technology and Analysis
DLR - Research theme (Project):E - Energy System Technology, E - Gas Turbine
Location: Cottbus
Institutes and Institutions:Institute of Low-Carbon Industrial Processes
Deposited By: Stathopoulos, Panagiotis
Deposited On:17 Dec 2021 16:59
Last Modified:20 Oct 2023 08:42

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