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Investigation of co-combustion of coal and olive cake in a bubbling fluidized bed with secondary air injection
Date
2009-06-01
Author
Atımtay, Aysel
Varol, Murat
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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In this study, a bubbling fluidized bed of 102 mm inside diameter and 900 mm height was used to burn olive cake and coal mixtures. Tuncbilek lignite coal was used together with olive cake for the co-combustion tests. Combustion performances and emission characteristics of olive cake and coal mixtures were investigated. Various co-combustion tests of coal with olive cake were conducted with mixing ratios of 25%, 50%, and 75% of olive cake by weight in the mixture. Operational parameters (excess air ratio, secondary air injection) were changed and variation of pollutant concentrations and combustion efficiency with these operational parameters were studied. The results were compared with that of the combustion of olive cake and coal. Flue gas concentrations of O(2), CO, SO(2), NO(x), and total hydrocarbons (C(m)H(n)) were measured during combustion tests. For the setup used in this study, the optimum operating conditions with respect to NO(x) and SO(2) emissions were found to be 1.35 for excess air ratio, and 30 L/min for secondary air flowrate for the combustion of 75 wt% olive cake and 25 wt% coal mixture. The highest combustion efficiency of 99.8% was obtained with an excess air ratio of 1.7, secondary air flow rate of 40 L/min for the combustion of 25 wt% olive cake and 75 wt% coal mixture.
Subject Keywords
Co-combustion of olive cake and coal
,
Bubbling fluidized bed
,
Secondary air injection
URI
https://hdl.handle.net/11511/32116
Journal
FUEL
DOI
https://doi.org/10.1016/j.fuel.2008.11.030
Collections
Graduate School of Natural and Applied Sciences, Article