Diseño de un sistema para la remoción de H2S proveniente de la hidrofinación de diesel
Fecha
2010-06-25
Autores
Alba Reyes, Yasmani
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Editor
Universidad Central Marta Abreu de Las Villas
Resumen
En el presente trabajo se lleva a cabo el diseño, la evaluación técnica- económica y de
seguridad en una instalación para la remoción de sulfuro de hidrógeno procedente de la
hidrofinación de diesel con una capacidad de trabajo de alimentación de 11738 kg/h. Se
obtiene el diseño total de la instalación utilizando como absorbente la
metildietanolamina (MDEA) y se evalúa posteriormente la posibilidad de una mezcla de
MDEA, metanolamina (MEA) y dietanolamina (DEA).
Se desarrolla además, una simulación modular secuencial empleando el Software
Profesional Hysys 3.2 mediante el cual se obtienen los resultados de los balances de
masa y energía en los diferentes puntos críticos del sistema. Además se realizaron
varios casos de estudios para explorar el efecto de la mezcla de aminas en el grado de
separación de H2S y la temperatura de alimentación a la despojadora sobre el consumo
de energía en este equipo.
Tras evaluar económicamente el proyecto de inversión se encontró que la inversión se
recupera en 5,8 años, con un VAN ascendente a 9,69 MM$/a, una TIR del 29,6 % y un
PRD del 85,3 %.
Se llevó a cabo una clasificación de las diferentes sustancias empleadas obteniéndose
que la mayoría se pueda clasificar de peligrosas por cuestiones de toxicidad,
combustión, irritabilidad e inflamabilidad.
Presently work is carried out the design, the technical evaluation - economic and of security in an installation for the removal of sulfurate of hydrogen coming from the hidrofining of diesel with a capacity of work of feeding of 11738 kg/h. the total design of the installation is obtained using as absorbent the methyldietanolamine (MDEA) and it is evaluated the possibility of a mixture of MDEA later on, methanolamine (MEA) and diethanolamine (DEA). It is also developed, a simulation to modulate sequential using the Professional Software Hysys 3.2 by means of which the results of the balances of mass and energy are obtained in the different critical points of the system. They were also carried out several cases of studies to explore the effect of the amines mixture in the grade of separation of H2S and the feeding temperature to the stripper on the energy consumption in this equipment. After evaluating the investment project economically it was found that the investment recovers in 5,8 years, with A VAN up to 9,69 MM$/a, a TIR of 29,6% and a PRD of 85,3%. It was carried out a classification of the different used substances being obtained that most you can classify of dangerous for toxicity questions, combustion, irritability and inflammability.
Presently work is carried out the design, the technical evaluation - economic and of security in an installation for the removal of sulfurate of hydrogen coming from the hidrofining of diesel with a capacity of work of feeding of 11738 kg/h. the total design of the installation is obtained using as absorbent the methyldietanolamine (MDEA) and it is evaluated the possibility of a mixture of MDEA later on, methanolamine (MEA) and diethanolamine (DEA). It is also developed, a simulation to modulate sequential using the Professional Software Hysys 3.2 by means of which the results of the balances of mass and energy are obtained in the different critical points of the system. They were also carried out several cases of studies to explore the effect of the amines mixture in the grade of separation of H2S and the feeding temperature to the stripper on the energy consumption in this equipment. After evaluating the investment project economically it was found that the investment recovers in 5,8 years, with A VAN up to 9,69 MM$/a, a TIR of 29,6% and a PRD of 85,3%. It was carried out a classification of the different used substances being obtained that most you can classify of dangerous for toxicity questions, combustion, irritability and inflammability.
Descripción
Palabras clave
Procesamiento del Petróleo, Sulfuro de Hidrógeno, Evaluación Técnica-Económica, Diseño Tecnológico, Hidrofinación de Diesel