Avaliação exergética dos efluentes do processo industrial do álcool / Exergetic assessment of effluents in the industrial alcohol process

AUTOR(ES)

Ademir Gonçalves Albuquerque

DATA DE PUBLICAÇÃO

2005

RESUMO

In the production of ethyl alcohol as a fuel, the sugar and alcohol industry captures large volumes of water for steam generation, for cooling and as part of the process, generating large amounts of effluents. Using the energy produced by the burning of bagasse in the furnace for the transformation of water into steam, the industry generates its own electricity and the entire mechanical work developed in the process. The degree of utilization of residual steam in heat exchangers demonstrates the efficiency of the plant. The balance of the energies being transformed in this process shows, through the effluents launched, the losses that may be reduced. By means of case studies in two mills, the exergetic analysis tool (measurement of the degree of unbalance between the substance and its environment) employed in this study shows how to identify, in control volumes traced in the alcohol production cycle, where the losses are occurring and the possibilities of improvement that may eventually correct them

ASSUNTO(S)

álcool etílico liquid effluents sugar and alcohol ethylic alcohol sugar cane cana-de-açúcar exergy sucroalcooleira efluentes líquidos exergia

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