Melhoria de eficiência energética em um forno de síntese de óxido de zinco - estudo de caso

Abstract

The Mining industry in Brazil is a relevant sector for the country's economic development due to its diverse applications, featuring a large consumer of electrical and thermal energy. Among the equipment present in production processes, ovens are considered the largest energy consuming units, so their thermal efficiency plays a crucial role in energy savings for companies. The proposed work aims to analyze the energy benefits of incorporating heat recovery and air preheating in an industrial zinc oxide production furnace, both from an energy and economic point of view. The results obtained show a substantial reduction in fuel consumption, in the order of 22.4%, while reducing heat loss and the irreversibility of the unit. In the economic aspect, the implementation of the system resulted in a payback time of less than 2 and a half years.