Caracterização térmica de briquetes de lignocelulósicos fabricados com aglutinantes de resíduos alimentícios

Abstract

The main purpose of this work is to perform the thermal characterization of standard briquettes produced by the hermetic batching technique and also to perform some analysis to complement the characterization. Of the techniques used we have: analysis of composition by firing, which showed percentages of cellulose / hemicellulose above 90%; lignin analysis, which obtained values below 10% and humidity between 9-17%; infrared analysis, which allowed to identify as main functional groups of the samples the alkanes, alcohols, phenols and aromatics; ash content analysis. which allowed us to calculate and compare the ash percentages of each sample, which were between 2-16%; X-ray spectroscopy analysis, which showed iron oxide in one of the samples and the particle size distribution analysis, which allowed to calculate the average particle size distribution of ash particles between 200 μm and 400 μm with the use of ultrasound. A new briquetting equipment was produced for the correction of some aspects of the briquettes and a thermal analysis of the briquettes produced in this new equipment, called standard briquettes, was also carried out. Values above 10kJ / g were found as calorific value. The results point to the accomplishment of new tests of thermal analysis with calorimetric pump.