Modeling of Biomass Gasification in a Downdraft Gasifier with Integrated Tar Adsorption

被引：3
|
作者：
Gradel, Andy [1 ]
Honke, Robert [1 ]
Wuenning, Joachim Alfred [2 ]
Plessing, Tobias [1 ]
Jess, Andreas [3 ]
机构：
[1] Univ Appl Sci Hof, Inst Water & Energy Management, Ctr Technol ZET, Alfons Goppel Pl 1, D-95028 Hof, Germany
[2] WS Warmeprozesstech GmbH, Dornierstr 14, D-71272 Renningen, Germany
[3] Univ Bayreuth, Chair Chem Engn, Ctr Technol ZET, Univ Str 30, D-95447 Bayreuth, Germany
来源：
CHEMICAL ENGINEERING & TECHNOLOGY | 2019年 / 42卷 / 09期
关键词：
Biomass gasification; Downdraft gasifier; Kinetic modeling; Tar adsorption; Upscaling; CRACKING; PERFORMANCE; COMBUSTION; REDUCTION; REMOVAL; HEAT; COAL;
D O I：
10.1002/ceat.201800640
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Thermal gasification of biomass is known for its capabilities in flexible and decentral power station applications for cogeneration. However, the product gas contains tar compounds adversely for a stable operation. Integrated tar adsorption in a subsequent cooled section is therefore an option to reduce the tar pollution. The char coal, used here as adsorption agent, is formed by biomass pyrolysis in the gasifier. A kinetic model is proposed, considering the kinetics of all main reactions as well as heat and mass transport phenomena. Results are presented for axial temperature profiles, gas compositions, and the gas purity at different air-to-fuel ratios. The resulting output mass flows could indicate a requirement on the adsorption capacity of at least 0.3 g g(-1) for the activated char coal.
引用
收藏
页码：1895 / 1906
页数：12
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