Gestão da manutenção em uma planta de cogeração do setor sucroalcooleiro.

Abstract

Ethanol plants of cogeneration from biomass are predominant in Brazil, given that sugar cane is the best alternative for biofuel and the country is a leader in sugar cane production. However, during operation these plants are put under severe conditions of high temperatures and pressure, in addition to being exposed to many air impurities. Given these conditions, it is important to create an efficient maintenance plan so that production is not compromised. Having that said, with the purpose of increasing equipment availability and reduce cost due to maintenance issues, this work is focused on elaborating equipment maintenance plants, specifially for thermal and flux machines of an ethanol plant located in the center-west of Brazil. Initially the existing thermodynamic cycle of the cogeneration was revised in order to identify the equipment condition in each of the phases. After that, past maintenance issues where prodution was completely stopped due to equipment failure were analyzed and studied. Once the problems were accounted for, their causes were indentified and analyzed so that a maintenance plan could be created. After an elaborated plan was created, it became possible to estimate the duration of a hypothetical future pause in production, and to further confirm that it was shorther than the average previous pauses in the plant’s records. At the end, the methodology and plan created showed to be efficient in increasing the plant’s productivy and the availability of its machinery.