下吸式生物质气化炉数值模拟的研究进展

使用数值模拟方法,建立下吸式生物质气化炉的数学模型,能够更好地理解气化炉内发生的各种化学和物理现象,进而对气化炉的设计和操作进行优化、对新工艺的开发进行指导。对几种基本的下吸式气化炉数值模拟方法(如热动力学平衡法、化学动力学方法、计算流体动力学(CFD)法、ASPEN Plus法)和多分区模拟法,进行了探讨和分析比较,并进一步总结了"结合单颗粒模型的多分区数值模拟"方法,提出结合单颗粒模型的多分区模拟法具有更加广阔的发展前景。

Research Progress of Numerical Simulation of Downdraft Biomass Gasifier

Numerical simulation which developed the mathematical model of downdraft biomass gasifier could help to understand the chemical and physical phenomena in downdraft gasifier. Also, it could help to find optimum operating conditions, design the gasifier and assist the development of new technology. The paper discussed different models available for downdraft gasifier such as thermodynamic equilibrium, chemical kinetic, computational fluid dynamics(CFD), ASPEN Plus, multiple zones models. And the single particle model was combined to the multiple zones models. The comparative analysis among the models was carried out. The results showed that the multiple zones model combined with single particle models has more broad developing prospects.