Análisis de integración de procesos al CAI Uruguay para la diversificación de la industria azucarera
Fecha
2005-06-25
Autores
López Robles, Yusely
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Editor
Universidad Central "Marta Abreu" de las Villas
Resumen
En el desarrollo diversificado de la caña de azúcar una alternativa que es una
tendencia internacional es la producción de etanol y otra de indudable interés,
debido a su demanda nacional e internacional, es la producción de ácido
cítrico. En el presente trabajo se determinan las posibilidades de integración
material y energética de la Empresa Azucarera Uruguay para el uso de
corrientes intermedias del proceso y miel final para ambas producciones
derivadas.
Se parte de un estudio de la fermentación cítrica, utilizando la miel final como
sustrato, a través del comportamiento del Ph y la acidez con una tendencia a la
formación de ácido cítrico; y la fermentación alcohólica, basada en el estudio
de mezclas de varios sustratos: miel final, jugo de los filtros y jugos
secundarios, por el método de enrejado simple. En este estudio los % más
elevados de grado alcohólico se obtuvieron en la mezcla de jugo de los filtros y
miel final.
Los indicadores de integración azúcar – alcohol y azúcar – ácido cítrico fueron
obtenidos para cada variante de extracción de corriente: 0 – 100% jugo de los
filtros y 0 – 100% jugo diluido, con el uso del programa SISTEC.
La planta de ácido cítrico fue diseñada para tres capacidades de producción (
5000, 7500 y 1000), demostrándose la factibilidad económica de la inversión a
través de los indicadores dinámicos usados: VAN, TIR (>16%) y periodo de
recuperación (<3.76 años). Los beneficios económicos de la integración fueron
32528.58 $/a para azúcar – alcohol y 607892.76 $/a para azúcar – ácido cítrico.
In the diversified development of the sugar cane industry, an alternative consisting an international tendency is the Ethanol production and another one of undutiful interest due to its national and international demand is the Citric Acid production. In the actual work we determine the material and energetic possibilities of integration of the Uruguay Sugar cane Enterprise for the usage of the intermediate currents of the process and its purge liqueur in both derived productions. We start from a study of the citric fermentation, using the purge liqueur as a substrate, through the behavior of the Ph and the acidity with a tendency to the formation of citric acid; and the alcoholic fermentation, based on the study of mixtures of various substrates: final liqueur, filter juice and secondary juice, by the simple barring method. In this study the most altered % of alcoholic degrees were obtained in the mixture of filter juices and the final liqueur. The integration indicators of sugar – alcohol and sugar – citric acid were obtained for each variant of current extraction: 0 – 100% filter juice and 0 – 100%of solved juice with use of the SISTEC Software. The citric acid plant was designed for three production capacities (5000, 7500, 10000), showing the economic feasibility of the inversion through the dynamic indicators used: VAN, TIR (>16%) and recuperation period (<3.76 years). The economic benefits of the integration were 32528.58 $/a for sugar – alcohol and 607892.76 $/a for sugar – citric acid.
In the diversified development of the sugar cane industry, an alternative consisting an international tendency is the Ethanol production and another one of undutiful interest due to its national and international demand is the Citric Acid production. In the actual work we determine the material and energetic possibilities of integration of the Uruguay Sugar cane Enterprise for the usage of the intermediate currents of the process and its purge liqueur in both derived productions. We start from a study of the citric fermentation, using the purge liqueur as a substrate, through the behavior of the Ph and the acidity with a tendency to the formation of citric acid; and the alcoholic fermentation, based on the study of mixtures of various substrates: final liqueur, filter juice and secondary juice, by the simple barring method. In this study the most altered % of alcoholic degrees were obtained in the mixture of filter juices and the final liqueur. The integration indicators of sugar – alcohol and sugar – citric acid were obtained for each variant of current extraction: 0 – 100% filter juice and 0 – 100%of solved juice with use of the SISTEC Software. The citric acid plant was designed for three production capacities (5000, 7500, 10000), showing the economic feasibility of the inversion through the dynamic indicators used: VAN, TIR (>16%) and recuperation period (<3.76 years). The economic benefits of the integration were 32528.58 $/a for sugar – alcohol and 607892.76 $/a for sugar – citric acid.
Descripción
Palabras clave
CAI Uruguay, Industria Azucarera, Producción de Etanol, Ethanol, Saccharum, Industria del Alcohol, Fermentación Alcohólica