Reduction of process steam demand and water-usage through heat integration in sugar and ethanol production from sugarcane - Evaluation of different plant configurations
메타 데이터
바이오화학분류
바이오플라스틱
플라스틱
바이오정밀화학
용매
화학제품
연료
화장품용 기능성소재
계면활성제⁄증점제
의료용 화학소재
식품첨가제
논문
Reduction of process steam demand and water-usage through heat integration in sugar and ethanol production from sugarcane - Evaluation of different plant configurations
학술지
Energy : technologies, resources, reserves, demands, impact, conservation, management, policy
<P><B>Abstract</B></P> <P>The sugarcane industry represents one of the most important economic activities in Brazil producing sugar and ethanol for the internal and external markets. There are also plants dedicated only to ethanol production. The aim of this study is to accomplish a joint assessment to evaluate the reduction of process steam demand and water usage obtained through heat integration and an exergy analysis to quantify the reduction in irreversibility generation owing to heat integration procedure. Two configurations of plant were analysed Case I – all sugarcane juice is destined to produce ethanol without sugar production and Case II – distribution of 50%/50% of total recoverable sugars in sugar and ethanol production. Simulations in ASPEN PLUS<SUP>®</SUP> software were performed in order to evaluate the mass and energy balances and heat integration using the Pinch Method was applied in order to minimize the utilities consumption. The results showed that heat integration promoted a reduction in steam consumption of 35% approximately, while the reduction in water consumption (water collecting requirement) was 24 and 13% in comparison to the conventional cases without heat integration.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Reduction in steam consumption and water usage through thermal integration. </LI> <LI> Analysis of different configurations of sugar and ethanol production plants. </LI> <LI> Impacts in electricity and bagasse surplus resulting from heat integration. </LI> <LI> Evaluation of different configuration of cogeneration systems. </LI> </UL> </P>