Influence of operation conditions and additives on the development of producer gas and tar reduction in air gasification of construction woody wastes using a two-stage gasifier

被引:28
|
作者
Mun, Tae-Young [1 ]
Kim, Jin-O [1 ]
Kim, Jin-Won [1 ]
Kim, Joo-Sik [1 ]
机构
[1] Univ Seoul, Dept Energy & Environm Syst Engn, Seoul 130743, South Korea
关键词
Construction woody waste; Tar; Two-stage gasifier; Producer gas; Activated carbon; FLUIDIZED-BED; BIOMASS GASIFICATION; ELIMINATION; CATALYSTS; OLIVINE; STEAM;
D O I
10.1016/j.biortech.2011.04.068
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Air gasification was conducted with fractions of construction woody wastes in a two-stage gasifier, consisting of a fluidized bed zone and a tar cracking zone. The aim of this work is to investigate the influence of reaction conditions and additives on the composition of producer gas and tar content in producer gas. A producer gas obtained with activated carbon of 540 g at an ER of 0.26 was mainly composed of H(2) (25 vol.%), CO (22 vol.%) and CH(4) (5 vol.%). Regarding tar removal efficiency, activated carbon was better than olivine. The tar removal rate with virgin activated carbon reached up to 80%. The reuse of spent activated carbon caused an efficiency loss in tar removal to some extent. Overall, it seems that the strong need for intensive downstream tar removal measurements can be removed with the use of a two-stage gasifier and the application of activated carbon. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:7196 / 7203
页数:8
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