Análise Exergética no Processo de Aquecimento de Licor Pobre em uma Refinaria de Alumina

Abstract

This study identifies energy loss points through exergy balances in heat exchangers used to heat spent liquor in the Bayer process for alumina extraction. Energy and exergy balances were performed in exchangers using live steam and regenerative steam, with significant losses identified in exchangers 4 and 5. The exergoeconomic analysis highlighted financial losses, providing a foundation for energy recovery actions and operational cost reduction.