Publication: Formación de aglomerados en combustores de lecho fluidizado
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2015-06-15
Defense date
2015-07-10
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Abstract
El presente proyecto busca estudiar la formación de aglomerados en combustores de
lechos fluidizados, para ello es necesario reproducir el comportamiento de dichos
aglomerados, así que se ha decidido hacer esto mediante la inyección de agua en el
seno del lecho.
Se ha creído conveniente hacer esta reproducción mediante la inyección de agua, ya
que en otras investigaciones se ha determinado que las señales y los resultados que
arrojan este tipo de ensayos son muy similares pero menos costosos y más fáciles de
realizar, que si las reproducciones experimentales se hicieran con otros métodos.
Primero que nada, es necesario determinar un estado inicial, para ello se hace una
caracterización del comportamiento de un lecho fluidizado en seco. Posteriormente se
procede a inyectar agua en el interior del lecho, con la peculiaridad de que en los
diferentes ensayos que se van a realizar se introducen diferentes volúmenes de agua
con distintos tiempos de inyección. Esto se hace para simular varios escenarios con
el objetivo de ver si el lecho presenta un comportamiento característico en cada
escenario o por el contrario, ver si tiene un comportamiento general,
independientemente del volumen o del tiempo de inyección. Para este estudio se ha
decidido analizar tanto las señales de presión como las señales de temperatura y
humedad relativa mediante el programa informático de MATLAB.
This project aims to study the formation of agglomerates in fluidized bed combustors. It is necessary to reproduce the behavior of such agglomerates, so it has been decided to do this by injecting water within the bed. It has been deemed as useful to do this by injecting water, because other studies has determined that the signals and results that such tests produce are very similar but less expensive and easier to perform than with other methods. First of all, it is necessary to determine an initial state so that a characterization of the behavior of a dry, fluidized bed can be done. Subsequently water is injected into the bed, with the peculiarity that in various tests different volumes of water are introduced with different injection times. This is done to simulate various scenarios in order to see if the bed has a characteristic behavior at each stage or, on the contrary, to see if there is a general behavior, regardless of volume or duration of injection. For this study it was decided to analyze the pressure signals as well as the signals of temperature and relative humidity using MATLAB software.
This project aims to study the formation of agglomerates in fluidized bed combustors. It is necessary to reproduce the behavior of such agglomerates, so it has been decided to do this by injecting water within the bed. It has been deemed as useful to do this by injecting water, because other studies has determined that the signals and results that such tests produce are very similar but less expensive and easier to perform than with other methods. First of all, it is necessary to determine an initial state so that a characterization of the behavior of a dry, fluidized bed can be done. Subsequently water is injected into the bed, with the peculiarity that in various tests different volumes of water are introduced with different injection times. This is done to simulate various scenarios in order to see if the bed has a characteristic behavior at each stage or, on the contrary, to see if there is a general behavior, regardless of volume or duration of injection. For this study it was decided to analyze the pressure signals as well as the signals of temperature and relative humidity using MATLAB software.
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Keywords
Combustores, Lechos fluidizados, Aglomerados