Investigation of the oxidation zone in a biomass two-stage downdraft gasifier

被引：0
|
作者：
Gerun, L [1 ]
Bellettre, J [1 ]
Tazerout, M [1 ]
Gobel, B [1 ]
Henriksen, U [1 ]
机构：
[1] Ecole Mines, DSEE, F-44307 Nantes, France
来源：
Proceedings of ECOS 2005, Vols 1-3: SHAPING OUR FUTURE ENERGY SYSTEMS | 2005年
关键词：
two-stage downdraft gasifier; partial oxidation; tar; modelling;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The partial combustion in a two-stage downdraft gasifier is critical for the process optimisation. Flame temperature and residence time of gas in the hot zone are indeed determining for tar cracking, the major issue in gasification. This paper presents a CFD model of the oxidation zone. Chemical reactions, including tar cracking, are treated by the "EDC" model (homogeneous reactions). Fluid flows are turbulent and simulated by the k-epsilon RNG turbulence model. The validation of the model is done with the DTU 100 kW two-stage gasifier. Results fit satisfactory the data, regarding the temperature profile.
引用
收藏
页码：1525 / 1532
页数：8
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