Otimização das colunas de absorção da recuperação de acetona na produção de Filter Tow por meio de estudos fenomenológicos e análise estatística. / Optimization of the absorption columns in the acetone recovery at the Filter Tow production by phenomenological studies and statistical analysis.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Absorption is the key step of the acetone recovery at Filter Tow production, for reducing the acetone emission and improving economics. For this reason it is the subject of this study, including the revision of phenomenological concepts, considering the choice of the best vapor liquid equilibrium model, passing by the improvement of coherent mass balances and establishing the Photography of the original situation, detailing a complex case of transposition of sieve trays to structured packing. However, the operation of the absorption columns is influenced by other variables, with unknown impacts, noises in relation to the phenomenology, justifying the development of this study, for evaluating them. With the general objective of optimizing the absorption, a statistical analysis is performed from collecting operating data, considering all variables, phenomenological and noises, with the specific objective of getting empirical models complementing the phenomenological simulations, increasing their comprising. For performing the statistical analysis sets of historical data have been collected and validated by coherent mass balances and the Photography, making possible its evolution, from the selection of the variables till establishing the regression models, and with them getting a new control way, which stabilizes the operation, allowing the optimization. In environmental terms, the use of these models results in up to 15% decrease in acetone losses to the environment, as well as power consumption with a saving of approximately 1 million reais per year, without any additional costs.

ASSUNTO(S)

absorção filter tow vaporliquid equilibrium (models) análise estatística de dados cellulose acetate regression and correlation analysis acetato de celulose análise de regressão e de correlação data statistical analysis filer tow absorption equilíbrio líquido-vapor (modelos)

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