Estabilização do processo como base para a otimização de forno de cal

Abstract

In this project the main goal was the reduction of the specific oil consumption in the lime kiln, keeping a stable operation and the specification of important process variables, as the content of oxygen (O2) and carbon monoxide (CO) in the exhaust gases, temperature of the burning zone, temperature of the gases in the exhaust zone and the residual carbonate content in the produced lime (CaCO3).To achieve this objective, and to guarantee the stability and quality requires, it was necessary to elaborate a project and giving a special attention to regulatory control, where the strategies and improvements implemented were based on statistical analyzes made through information from the production process available, software for data analysis and the support and active participation of the operational staff. As a result of these activities, the variability of important process variables was reduced by up to 67%, enabling the implementation of advanced algorithms for control and optimization and contributing to the reduction of specific fuel oil consumption by 7.3%. During the work will be approached the keys points for stabilization of the process, which includes quality data access, methodology for diagnosing basic control, changing control strategies to stabilize the process and culture management among multidisciplinary teams.