Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Evaluation of emissions of burning alternative liquid fuels in gas turbine combustors
Submission Author:
Gabriela de Castro Almeida , MG
Co-Authors:
Gabriela de Castro Almeida, Washington Orlando Irrazabal Bohorquez
Presenter: Gabriela de Castro Almeida
doi://10.26678/ABCM.COBEM2017.COB17-0212
Abstract
Gas turbines are thermal machines with the great advantage of being capable of successfully burning a large variety of fuels in a continuous combustion process. Alternative liquid fuels are among possible fuels of interest, in addition to oil-derived fuels. Using a numerical methodology for sizing fuel flexible gas turbine combustor, this manuscript contributes at the analysis of the rate of emissions on those combustors and its objective is to evaluate the emissions of a gas turbine combustor operating with ethanol, methanol and kerosene. It was made by varying the input temperature, pressure and equivalence ratio, comparing the renewable fuels (ethanol, methanol) of the fossil fuel (kerosene). Stable equilibrium state were calculated to evaluate pollutants like NOx, NO and CO. The chemical equilibrium was achieved when de individual species, in the burned products, react to produce and remove each species at equal rate. Results like air mass flow rate, fuel mass flow rate, pressure, combustion volume impacting on the production rate of combustion products (CO, CO2, NOX and OH) at the combustor exit. It can be concluded that the use of biofuels considerably improved the emission of polluting gases and maintains a very close range of operation with conventional fuel.
Keywords
Gas Turbine, Alternative Liquide Fuels, Combustion, Reaction Mechanisms, Numerical simulation
