An experimental technology of drying and clean combustion of biomass residues

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An experimental technology of drying and clean combustion of biomass residues

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Title: An experimental technology of drying and clean combustion of biomass residues
Author: Al-Kassir Abdulla, Awf; Coelho, Pedro Jorge Martins; García Sanz-Calcedo, Justo; Moral García, Francisco Jesús; Kassir Al-Karany, Raúl; Yusaf, Talal
Abstract: En el presente estudio, se desarrollan el secado y la combustión de residuos sólidos de biomasa. Se ha realizado la combustión de los residuos dentro de una caldera y una estufa. Utilizamos tres tipos de residuos sólidos de biomasa (es decir, corcho, pellet de pino y orujo de oliva). Estos residuos se han secado utilizando secadores de tornillo. La instalación experimental se ha utilizado para una serie de pruebas de secado térmico de los residuos midiendo la temperatura dentro del secador y su contenido de humedad. Se usó un secador de tornillo de laboratorio para secar el orujo de oliva utilizando gases calientes de una chimenea de una estufa de biomasa. Se han determinado análisis elementales y próximos, así como el mayor valor de calentamiento (HHV) de las materias primas. En los experimentos, se obtienen variaciones en el contenido de humedad de los residuos y temperaturas de secado. Estos residuos se secan varias veces en las mismas condiciones de secado para lograr la tasa final de contenido de humedad. Por otro lado, la temperatura de la cámara de combustión de la caldera se ha medido en diferentes condiciones. Se ha encontrado que, al aumentar la temperatura del gas caliente, aumenta la velocidad de secado. Finalmente, se ha encontrado que el secado de estos residuos aumenta sus valores caloríficos y reduce las emisiones.In the present study, the drying and combustion of solid biomass residues are developed. The combustion of the residues inside a boiler and a stove have been done. We used three types of solid biomass residues (i.e., cork, pine pellet and olive pomace). These residues have been dried by using screw dryers. Experimental installation has been used for a series of thermal drying tes ts of the residues by measuring the temperature inside the dryer and their moisture contents. A laboratory screw dryer was used to dry the olive pomace by using hot gases from a chimney of a biomass stove. Elemental and proximate analyses, as well as the higher heating value (HHV) of the raw materials, have been determined. In the experiments, moisture content variation of the residues and drying temperatures are obtained. These residues are dried several times under the same drying conditions to achieve the final moisture content rate. On the other hand, the temperature of combustion chamber of the boiler has been measured under different conditions. It has been found that by increasing hot gas temperature, the drying rate is increased. Finally, it has been found that the drying of these residues increases their calorific values and reduces the emissions.
URI: http://hdl.handle.net/10662/9884
Date: 2018


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