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Emission Characteristics of Cowdung at Different Feeding Rates in a Fluidized Bed Combustor


Emission Characteristics of Cowdung at Different Feeding Rates in a Fluidized Bed Combustor
Authors : Harrison K. Tarus
Publication Date: 01-03-2017

Authors

Author(s):  Harrison K. Tarus

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Volume. 6 - Issue. 01 , February - 2017

e-ISSN:   2278-0181

Abstract

Combustion of cowdung in a semi-pilot Fluidized bed combustor was carried with an aim of ascertaining the amount of emissions at different feeding rates. It was found that during combustion at excess air to fuel ratio of 30%, CO emitted was lower as compared to combustion at stoichiometric and 20% less air to fuel ratios. The amount was in a mean range of 0.000003% on the higher side and 0.000002% on the lower side as combustion progressed. A steady emission of Carbon dioxide gas attained a maximum value of 3.5% at 30% excess air to fuel ratio. It was therefore established that, the proportions of CO2 and CO emitted during combustion of cowdung at different feeding rates vary in proportions and a stable emission behavior is observed at excess air to fuel ratios. The low emissions of CO2 and CO gases shows that cowdung fuel can be used in a fluidized bed combustor to generate energy while mitigating the effects of global warming which can result if other fuels like coal are used.

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