期刊
ENERGY
卷 53, 期 -, 页码 299-305出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2013.02.041
关键词
Mixed plastic wastes; Two-stage gasifier; Tar removal; Calcined dolomite; Activated carbon
资金
- University of Seoul
In this experiment, air gasification was conducted with a fraction of mixed plastic wastes using a two-stage gasifier. Calcined dolomite as a bed material and activated carbon as a tar-cracking additive were simultaneously used for the production of a producer gas containing low tar and high hydrogen. The effects of the bed material, equivalence ratio (ER), amount of activated carbon, and temperatures in two reaction zones (the upper- and lower-reactor) on the composition of producer gas and amount of tar generated were investigated. When the amount of activated carbon increased from 0 to 900 g using calcined dolomite as the bed material, the concentrations of H-2 and CO in the producer gas increased sharply from 14.9 to 26.1 vol% and from 9.4 to 16.8 vol%, respectively. When 900 g of activated carbon was applied, the total tar amount was about 96% less than that obtained with only silica sand as the bed material. The maximum Lower Heating Value (LHV) of the producer gas was about 13.4 MJ/Nm(3). (C) 2013 Elsevier Ltd. All rights reserved.
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