CO-gasification of pelletized wood residues |
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Authors: | Carlos A. Alzate,Carlos F. Valdé s,Arturo Berrio,Javier De La Cruz,Carlos A. Londoñ o |
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Affiliation: | Grupo de Termodinámica Aplicada y Energias Alternativas, Escuela de Procesos y Energías, Facultad de Minas, Universidad Nacional de Colombia, Carr. 80 No. 65-223, Antioquia, Colombia |
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Abstract: | A pelletization process was designed which produces cylindrical pellets ∼8 mm in length and 4 mm in diameter. These ones were manufactured using a blend of Pinus Patula and Cypress sawdust and coal in proportions of 0%, 5%, 10%, 20%, and 30% v/v of coal of rank sub-bituminous extracted from the Nechí mine (Amagá-Antioquia). For this procedure, sodium carboxymethyl cellulose (CMC) was used as binder at three different concentrations. The co-gasification experiments were carried out with two kinds of mixtures, the first one was composed of granular coal and pellets of 100% wood and the second one was composed of pulverized wood and granular coal pellets. All samples were co-gasified with steam by using an electrical heated fluidized-bed reactor, operating in batches, at 850 °C. The main components of the gaseous product were H2, CO, CO2, CH4, and N2 with approximate quantities of 59%, 6.0%, 20%, 5.0%, and 9.0% v/v, respectively, and the higher heating values ranged from between 7.1 and 9.5 MJ/Nm3. |
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Keywords: | Pellets Wood Coal Co-gasification Carboxymethyl cellulose (CMC) |
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