Effect of biogas's composition on emissions of microturbine with pilot burner | Uticaj sastava biogasa na emisiju polutanata mikroturbine sa pilot gorionikom
2011
Živković, M., Rudarsko-geološki fakultet, Beograd (Serbia) | Adžić, M., Mašinski fakultet, Beograd (Serbia) | Ivezić, D., Rudarsko-geološki fakultet, Beograd (Serbia) | Milivojević, A., Mašinski fakultet, Beograd (Serbia) | Fotev, V., Mašinski fakultet, Beograd (Serbia) | Danilović, D., Rudarsko-geološki fakultet, Beograd (Serbia)
Stimulation of using biogas, which is a fuel derived from renewable energy sources, has intensified the research, development and implementation of various combustion techniques. Optimal combustion technology should provide a stable combustion meeting ever stricter environmental standards in a wide dynamic range. The presence of inert components cause problems related to the stability of combustion, energy losses, as well as problems related to the emission of harmful substances. The composition of biogas can significantly vary depending on the mode of production and used materials. Combustion of biogas is a very interesting problem, as it is a low calorific value fuel, derived from renewable energy sources. Experimental investigation of combustion of biogas, in order to determine the effect of carbon dioxide content on the emission of nitrogen oxides and carbon monoxide is presented. It was found that with increasing carbon dioxide content emissions of nitrogen oxides are reduced, while carbon monoxide emissions are increased in the whole range of coefficients of excess air, for which measurements were carried out. The presence of carbondioxide in the fuel reduces the emission of nitrogen oxide by acting on both the basic mechanisms of NOx formation: thermal and prompt. The existence of the inert component in the flammable mixture lead to decreased concentrations of O, OH and CH, and the lowering of the temperature in the reaction zone. The effect of carbon dioxide content on CO emissions is opposite to the impact on NOx emissions, because it is essentially related to its effect temperature reduction, as it is in the case of NOx inhibiting factor, while in the case of CO it is predisposing factor.
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