Experimental Investigation of Emission Characteristics on Can-Combustor Using Jatropha Based Bio-derived Synthetic Paraffinic Kerosene

Abstract

ABSTRACT Emissions emanating from gas turbine are important and critical in terms of environmental impact. In general, oxides of nitrogen, total unburned hydrocarbon, carbon monoxide, carbon dioxide, and soot particles are the most significant emissions from gas-turbine combustion systems. In order to reduce these emissions, fuels derived from bio-origin are being increasingly used for gas-turbine combustion. Since aviation accounts for more than 5% of anthropogenic emissions, and also due to increasing pressure from governments across the globe for emission reduction, it is important to investigate pathways to reduce aviation-generated emissions. We, therefore, propose the use of Jatropha-based bio-derived synthetic paraffinic kerosene (SPK) blended with aviation turbine fuel (ATF)-Jet A1, and experimentally investigate the emission characteristics within a laboratory-scale gas-turbine combustor from proposed fuel blends. The investigation is done for two different operating conditions: operating condition 1 (OC1) and operating condition 2 (OC2). The influence of emission characteristics of the two biofuel blends, namely BF-II and BF-IV, are analyzed and compared with that of neat ATF-Jet A1. A substantial reduction of 33.5% in THC, 20% in CO, 42% in soot and increase of 40% in NO x and 28.7% in CO2 emissions are evident for BF-II fuel in comparison to ATF with OC1. However, at OC2, these emission reductions are less with increased NO x emissions of 50.2% in comparison to that of ATF. In addition, for the fuel BF-IV, there have been reductions of 57.2% THC, 33.3% CO, 67.1% soot and increase of 49.4% NO x and 43.9% CO2 emissions as compared with ATF at OC1. Also THC, CO, soot, and CO2 emissions are reduced considerably with increased NO x emissions for BF-IV fuel at OC2.