Estudo da utilização de óleos reprocessados como combustível em fornos rotativos de calcinação: um estudo em escala industrial

Abstract

Brazils growing industrial development and the consequent high demand for energy have raised interest by the production sector in using non-conventional fuels in order to meet technical, economic and environmental requirements for process feasibility. Residues derived from several processes are being tested as energy sources for the same processes or other ones, which presents the advantage of reducing the disposal of great volumes, when they are part of the production chain. Such use can often ensure process quality in addition to permitting input cost reduction and guaranteeing flexibility to partially or totally use conventional fuels during production. This study aimed at assessing the technical and environmental viability of using fuels derived from reprocessed oil, in rotating furnaces for limestone burning, as an energy source for generating combustion heat. The evaluation primarily focused on the quality of atmospheric emissions, on the material physicochemical properties and on the potential interference with the combustion process. In order to verify technical feasibility, composition of residues in the atmospheric emissions and of solid residues derived from the process, combustion tests were performed.