Performance evaluation of fluidised bed biomass gasifier using CFD

被引：14
作者：
Anil, M. [1 ]
Rupesh, S. [1 ]
Muraleedharan, C. [1 ]
Arun, P. [1 ]
机构：
[1] Natl Inst Technol Calicut, Dept Mech Engn, Calicut 67360, Kerala, India
来源：
5TH INTERNATIONAL CONFERENCE ON ADVANCES IN ENERGY RESEARCH (ICAER) 2015 | 2016年 / 90卷
关键词：
Fluidized bed; gasification; multiphase flow; turbulence; modeling; GRANULAR FLOW; GASIFICATION;
D O I：
10.1016/j.egypro.2016.11.180
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：
Biomass gasification is one of the effective thermo-chemical methods to extract energy from biomass. This study mainly focuses on 2D modelling and simulation of biomass gasification in a bubbling fluidized bed gasifier using computational fluid dynamics (CFD) solver ANSYS FLUENT 15.0. Separate phases are used for biomass (saw dust), sand and gases and all the phases are solved using Eulerian-Eulerian approach. The effect of turbulence on computational fluid dynamics modelling of fluidized bed reactors is analyzed by comparing the results obtained from laminar and turbulent cases. The developed model is used to predict the effect of equivalence ratio, steam to biomass ratio, steam temperature and air preheating on product gas composition. It is found that when equivalence ratio is increased from 0.15 to 0.4, II2 concentration is decreased by 72% and the variation of steam to biomass ratio from 0.5 to 1.5 enhanced the H-2 concentration by 87%. (C) 2016 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：154 / 162
页数：9
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