Abstract
Biodiesel is a fuel produced by transesterification of vegetable oils or animal fats, which currently is gaining attention as a diesel substitute. It represents an opportunity to reduce CO2, SO2, CO, HC, PAH and PM emissions and contributes to the diversification of fuels in Mexico’s energetic matrix. The results of the simulation of the combustion process are presented in this paper with reference to an engine spe-cifcation KUBOTA D600-B, operated with diesel-biodiesel blends. The physicoche-mical properties of the compounds and the operating conditions of equipment were developed using the simulator Aspen® and supplementary information. The main aspects of the engine working conditions were considered such as diesel-biodiesel ratio, air/fuel mixture, temperature of the combustion gases and heat load. Diesel physicochemical specifications were taken from reports of PEMEX and SENER. Methyl esters corresponding to the transesterification of fatty acids that comprise castor oil were regarded as representative molecules of biodiesel obtained from chro-matographic analysis. The results include CO2, water vapor, combustion efficiency, power and lower calorific value of fuels.
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