膜反应器甘油催化重整制氢的模拟研究

Simulation study on glycerol catalytic reforming for hydrogen production in a membrane reactor

催化重整制氢为生物柴油副产物甘油的利用提供了一种有效途径。为了提高燃料转化率和氢气产量,膜分离技术被广泛应用。基于计算流体力学方法,结合化学反应动力学模型和多孔介质模型,对膜固定床反应器内甘油催化重整制氢过程进行了模拟研究,分析了操作参数对甘油转化率和氢气产量、回收率的影响。研究表明,相较于传统固定床,膜分离技术可以较大地提高氢气产量,压力的增加可以有效地提高氢气产量和回收率。

Catalytic reforming for hydrogen production is an efficient approach for the utilization of glycerol as a by-product during the biodiesel production.In order to improve the fuel conversion and hydrogen yield,the membrane separation technology is widely applied.On the basis of the computational fluid dynamics integrated with the reaction kinetic model and porous media model,the glycerol reforming process in a membrane reactor is numerically simulated.The effect of operating parameters on glycerol conversion,hydrogen yield and recovery is analyzed.The results show that the membrane separation can improve the hydrogen yield compared to that without hydrogen removal.The increase of operating pressure can enhance the hydrogen production and recovery.