The aluminum silicate catalyst effect on efficiency of energy yield in gasification of paper-reject sludge |
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Authors: | Kung-Yuh Chiang Chen-Han LuKuang-Li Chien |
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Affiliation: | Department of Environmental Engineering and Science, Feng-Chia University, Tai-Chung 407, Taiwan |
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Abstract: | This research investigated the mineral aluminum silicate catalyst effect on the enhancement of energy yield efficiency and reduction of the tar yield concentration in the gasification of paper-reject sludge. Experimental results indicated that the energy yield efficiency is enhanced by the tested mineral catalyst. When gasification temperature operated at 600 °C, the lower heating value (LHV) of syngas increased significantly from 8.66 MJ/Nm3 to 13.38 MJ/Nm3 with an increase in aluminum silicate catalyst addition from 0% to 20%. The energy density of syngas also increased from 0.53 to 0.82. This implied that the energy utilization of syngas produced by a low temperature catalytic gasification could increase approximately 1.5 times the energy content of paper-reject sludge. The tar reduction efficiency could reach approximately 50% which was also proportional to the catalyst addition ratio. In summary, the aluminum silicate catalyst can help to improve the efficiency of tar reduction and energy yield in a low temperature catalytic gasification of paper-reject sludge. |
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Keywords: | Gasification Catalyst Energy density Sludge |
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