摘要
首先采用多维数值模拟方法解析了下吸式固定床反应器生物质气化反应的发展过程,并通过主动配气下吸式固定床的气化试验结果验证了该数值解析方法的可行性。在此基础上,解析了气化过程中炉内温度场和组分场的分布特性。结果表明,空气当量比RER是影响下吸式固定床气化过程气化特性的重要因素,并且对于炉内温度场分布和气化产气组分场的最优取值范围为0.24～0.28。
The development process of air biomass gasification in a down-draft fixed bed gasifier was analyzed by using multi-dimensional numerical simulation method firstly and was proved to be feasible by the experimental results.Then based on the research above,the influence of the equivalence ratio RER on the temperature distribution over the entire gasifier and gas composition of the biomass gasification were investigated and predicted by numerical simulation,respectively.The results indicate that RER has significant influence on the gasification characteristics and the best range of RER is 0.24～0.28.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2012年第5期91-96,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
山东省自然科学基金资助项目(2009ZRA01100)
关键词
生物质
固定床
气化
温度场
组分场
数值模拟
Biomass
Fixed bed
Gasification
Temperature distribution
Gas composition
Numerical simulation
