基于Fluent软件的生物质气化模拟研究

基于Fluent软件,建立流化床反应器模型,对生物质-水蒸气气化过程进行模拟,研究温度对生物质气化过程的影响,同时分析碳转化率、气体成分以及气体总产率的变化规律。结果表明:模拟结果与实验数据吻合良好,碳转化率及气体总产率随温度的升高而升高,床层高度对CO、 H₂生成具有较大影响。模拟计算条件下,氢气体积分数高达55%,这说明水蒸气作为气化介质有利于气化过程中产生更多的H₂。Fluent软件能够很好的对生物质气化过程进行模拟,可以作为生物质气化研究的一个重要工具。

Numerical Simulation of Biomass Gasification Using Fluent

A model was developed to simulate the biomass-steam gasification process in a fluidized bed using Fluent.The effects of temperature on biomass gasification were studied.The results were presented as carbon conversion,gas component and gas yield.The simulated and experimental results were compared and showed good agreement.The simulated results show that the carbon conversion and gas yield increase with the rise of temperature.The height of bed has a great influence on CO and H2 yield.Under the simulation conditions,maximum H2 volume fraction is about 55 %.It indicates that the gasifying agent steam benefits H2 production for biomass gasification.The results also show that Fluent software is a useful tool for predicting the biomass gasification process.