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Thermal treatment of fleshing residue for producing syngas

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In this paper, characteristics of syngas from the pyrolysis and gasification of tannery industry fleshing residues has been investigated. Pyrolysis and gasification behaviour were evaluated in terms of syngas composition and total energy production. Dried air and pure oxygen (99%) were used as gasification agents. Experiments were also erformed in oxygen–free media. H2, CO and CH4 levels in producer gas were analysed and calorific values were calculated. Besides, weight and volume reductions during each experiment were reported. Dried air flow varied between 0.05 and 0.5 L/min during experiments. Syngas composition with higher calorific value was achieved between 0.1–0.2 L/min. It was determined that calorific values decreased related to the decrease in volume percentages of H2, CO and CH4 over 0.2 L/min gas flow. According to the statistical analysis, gasification agent had an important role in gasification performance. Average calorific value, achieved by pure oxygen, was higher than the value achieved by dried air. The lowest efficiency was achieved in oxygen–free media.

Keywords: fleshing residue, gasification, thermochemical treatment, syngas production, tannery industry

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