Caracterização energética dos resíduos sólidos agroinduntriais de duas usinas da região da grande Dourados

Abstract

The Bioenergy contained in the biomass is considered a renewable energy source, which has a significant role in the national energy matrix. Moreover, the state of Mato Grosso do Sul is being regarded as one of the major sugar cane and sorghum producers in Brasil. The significant concentration of these vegetal biomasses in the region is one of the reasons that they are used as a source of power generation, mainly the sugar cane, in sugar and ethanol industries located in the state. Another reason is the energy potential that these agro industrial biomasses have to generate ethanol and heat, and lately electricity. The power generation in thermoelectric plants using as energy input the sugar cane and biomass sorghum bagasse is given through direct combustion in a water-tube boiler, generating superheated steam that is used to rotate the blades of a turbine coupled in a generator. Nevertheless, to attest the local raw material potential for power generation in thermo-electric plants, samples of sugar cane and biomass sorghum bagasse were collected in two sugar and ethanol industries in Dourados region, in Mato Grosso do Sul. Then a study, of the thermal performance by means of energy characterization of the agro-industrial solid fuels at issue, was realized. This characterization is constituted by: immediate analysis (moisture, volatile matter content, fixed carbon content and ash content), the determination of the Higher Calorific Value (HHV), the Thermal Gravimetric Analysis (TGA) and the Derivative Thermogravimetric Analysis (DTG). Through these analyses, it was noticed that the energy inputs studied in this written report indicate a solid potential for power generation in southern Mato Grosso do Sul. Therefore, the biomass sorghum could be an imminent complement, during the intercrop, for the sugar and ethanol industries that uses sugar cane as the main raw material .