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Lookup NU author(s): Dr Murat Dogru
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This study was carried out to understand the decomposition behaviour of a range of biofuel and waste feedstock during gasification in a downdraft gasifier. A laboratory scale large sample thermogravimetric analyser (LSTA) is used which allows the data on bum-out characteristics of different fuel particles to be measured under agitated conditions. The conditions chosen simulate the combustion behaviour in a gasifier for a range of biofuels and wastes, namely hazelnut, pistachio, and peanut shells, wood chips and sewage sludge pellets. From this data the activation energy is calculated for a heating rate of 20 degrees C/min. It was found that, as the weight loss increases, the activation energy decreases. In addition the influence of a range of gasification air/N-2 levels on constituents of the gas released during hazelnut shell decomposition was observed. It was found that the composition of the product gases consisted of CH4, H-2, CO, CO2, C2H4, C2H6. This was analyzed as function of time for hazelnut shells showing that the primary products are H-2, CO, CH4 and CO2.
Author(s): Olgun H, Dogru M, Howarth CR, Malik AA
Editor(s): Dincer, I., Ayhan, T.
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 2nd Trabzon International Energy and Environment Symposium
Year of Conference: 1999
Pages: 309-313
Publisher: Begell House
Library holdings: Search Newcastle University Library for this item
ISBN: 9781567001273
