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Steam Gasification of Coffee Husk in Bubbling Fluidized Bed Gasifier

Authors:
Kore Sileshi
Mayerhofer Matthias
Assefa Abebayehu
Hartmut Spliethoff

Keywords: coffee husk; tar-content; gas composition; fluidized bed; gasification

Abstract:
Abstract- Currently, the worldwide demand for fossil fuel is increasing rapidly and, at the same time, known resources are diminishing. In particular, energy resources, such as oil and natural gas, are almost depleted in some parts of the world. In addition, the fact that the climate changes are more severe than before has increased the demand for renewable energy resources. Thus, energy from biomass is one of the potential renewable energy options. The availability of biomass, combined with the recent development of technologies to use it efficiently, with low level of emission, promise to make biomass an increasingly attractive fuel option. Coffee husk is an agricultural waste in coffee processing industries in different parts of Ethiopia that has the potential of exploiting energy via thermo-chemical conversion such as gasification. However, the characteristic properties of this material with regard to thermo-chemical conversion technologies are missing in literature. This study focuses on the experimental investigating of coffee husk in bubbling fluidized bed gasifier. The performance parameters that were investigated during the experiment were tar content and gas composition. The study findings show that the tar content of coffee husk gasification is not disturbing the smooth operation of the gasifier and the gas composition observed was good as compared to wood pellet. Therefore, coffee husk will be promising feedstock in fluidized bed gasification.

Pages: 17 to 20

Copyright: Copyright (c) IARIA, 2013

Publication date: March 24, 2013

Published in: conference

ISSN: 2308-4154

ISBN: 978-1-61208-261-5

Location: Lisbon, Portugal

Dates: from March 24, 2013 to March 29, 2013