Research Interests:
Research Interests: Epidemiology and TCM
Research Interests:
... and Its Rate-Based Representation. Wednesday, November 11, 2009: 10:10 AM. Canal A (Gaylord Opryland Hotel). Pablo Garcia-Herreros, Departamento de Ingeniería Química, Universidad de los Andes, Bogota, Colombia. ...
575y. Analysis of the Multitubular Reactor for Formaldehyde Production by One-Dimensional Models. Juliana Schotborgh, Gustavo Adolfo Orozco, and Iván Dario Gil Chaves. Department of Chemical Engineering, Universidad ...
Anhydrous ethanol production to use as fuel and other applications, is a relevant topic because of in several sites of the world are being investigated and implemented technologies to partial replace of fuels originated from non-renewable... more
Anhydrous ethanol production to use as fuel and other applications, is a relevant topic because of in several sites of the world are being investigated and implemented technologies to partial replace of fuels originated from non-renewable sources.
Research Interests:
ABSTRACT
Research Interests:
Research Interests:
The vast majority of industrial processes have as final operation separation stages. Distillation represents 95% of the operations in chemical industries having a major impact on product quality and energy use. The control of distillation... more
The vast majority of industrial processes have as final operation separation stages. Distillation represents 95% of the operations in chemical industries having a major impact on product quality and energy use. The control of distillation columns presents a major challenge because ...
La producción de alcohol anhidro para su uso como carburante y en otras aplicaciones, es un tema de bastante interés puesto que en distintas partes del mundo se viene investigando e implementando tecnologías para reemplazar de forma... more
La producción de alcohol anhidro para su uso como carburante y en otras aplicaciones, es un tema de bastante interés puesto que en distintas partes del mundo se viene investigando e implementando tecnologías para reemplazar de forma parcial, y en algunos casos total, los combustibles originados a partir de recursos no-renovables. Este trabajo aborda la etapa de la deshidratación de etanol para llevarlo a la condición de anhidro, a través de la tecnología de la destilación extractiva que tiene un potencial bastante alto en cuanto al consumo energético de la operación. Se hace el diseño conceptual y de detalle de una columna de destilación extractiva para procesar 50 l/h de etanol azeotrópico. El diseño conceptual hace uso herramientas de simulación y la columna se diseña a través de un modelo riguroso de No-equilibrio que permite cuantificar los efectos de transferencia de masa y calor en cada una de las fases. El diseño de detalle está enfocado a la adquisición de un equipo eficient...
Anhydrous ethanol is widely used in the biofuels industry, since it has demonstrated to be environmental friendly and to have excellent properties for clean-burning. In mixtures of ethanol and gasoline, alcohol must have purity higher... more
Anhydrous ethanol is widely used in the biofuels industry, since it has demonstrated to be environmental friendly and to have excellent properties for clean-burning. In mixtures of ethanol and gasoline, alcohol must have purity higher than 99.5% in order to avoid phase separation. Among the most popular processes used in ethanol dehydration, extractive distillation has demonstrated to be an adequate alternative due to the low energy consumption compared with other techniques and its economic feasibility. In this work, an extractive distillation process was simulated with the Aspen Plus software platform, using the RadFrac module for distillation columns. A mixture of ethylene glycol and glycerol is proposed as entrainer. This enhanced entrainer combines the low viscosity and the ability of the ethylene glycol to break the binary azeotrope with the low prices of glycerol. Phase equilibrium of this quaternary system was calculated with the NRTL model, which correlates well these stron...
La simulación de procesos es una disciplina transversal a todas las áreas de la ingeniería química. El desarrollo de muchos proyectos de ingeniería demanda estudios de simulación, desde los análisis preliminares de factibilidad, el diseño... more
La simulación de procesos es una disciplina transversal a todas las áreas de la ingeniería química. El desarrollo de muchos proyectos de ingeniería demanda estudios de simulación, desde los análisis preliminares de factibilidad, el diseño conceptual, el diseño detallado, hasta la operación del proceso. Por tal razón, la generación de nuevos procesos apoyada en la simulación obliga la integración de conceptos de la ingeniería química y el desarrollo de habilidades de innovación. Toda esta integración redunda en estudios de controlabilidad y análisis dinámico, integración energética, y optimización, que buscan cumplir con los requisitos propios de la protección ambiental, la seguridad de los procesos y la calidad de los productos. El libro está dirigido a estudiantes de pregrado de Ingeniería Química e Ingeniería de Procesos como un apoyo para el desarrollo de cursos de simulación de procesos, diseño de procesos, ingeniería de procesos, diseño de plantas y control de procesos. Esta pu...
A design methodology is developed for extractive distillation systems. These systems are being used to produce bioethanol which is considered as a replacement of motor fuel. Designing highly efficient distillation processes is decisive in... more
A design methodology is developed for extractive distillation systems. These systems are being used to produce bioethanol which is considered as a replacement of motor fuel. Designing highly efficient distillation processes is decisive in the competitiveness of bioehtanol against fossil fuels. This competitiveness should not depend on international price of oil and government subventions. Extractive distillation systems are generally made up by two distillation columns, one in charge of the extraction process and the other of the solvent recovery. A solvent and a mixture to be separated are fed into the first column to obtain a highly concentrated distillate. The second column recovers the solvent that is reused in the extractive distillation column [1]. The distillation process is represented by the equilibrium model that uses MESH equations [2] to describe the separation stages. The thermodynamic equilibrium considers the non-ideality of the liquid phase through the NRTL model [3]...
This review outlines ethanol dehydration processes and their most important characteristics. It also deals with the main operating variables and some criteria used in designing the separation scheme. A differentiation is made between... more
This review outlines ethanol dehydration processes and their most important characteristics. It also deals with the main operating variables and some criteria used in designing the separation scheme. A differentiation is made between processes involving liquid-steam balance in separation operations and those doing it by screening the difference in molecule size. The last part presents a comparison between the three main industrial processes, stressing their strengths and weaknesses from the operational, energy consumption and industrial services points of view.
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
The optimal design of an extractive distillation system is developed for the separation of the ethanol-water azeotropic mixture using ethylene-glycol as entrainer. The research in this field has been motivated by the growing demand of... more
The optimal design of an extractive distillation system is developed for the separation of the ethanol-water azeotropic mixture using ethylene-glycol as entrainer. The research in this field has been motivated by the growing demand of anhydrous ethanol as motor fuel and ...