甲烷蒸汽重整制氢过程的数值模拟

冯靓婧， 曹长青*

（青岛科技大学 化工学院，山东 青岛 266042）

摘要： 应用过程模拟软件Aspen Plus，选择合适的单元操作模型和热力学方法，实现了对甲烷蒸汽重整制氢系统的模拟。研究了反应器中水碳比、操作温度、操作压力对氢气产率的影响规律。模拟结果表明，氢气产率随水碳比的增大而提高；压力较低时，随着操作温度的升高，重整反应器（R1）氢气产率增长趋势越来越快，压力较高时，操作温度变化对氢气转化率的影响相对较小。温度较低时，R1氢气产率与操作压力的关系曲线呈指数函数形式，温度超过一定值，呈二次函数形式。所得模拟结果符合甲烷重整反应及变换反应的反应规律，可为甲烷重整制氢的生产和节能提供理论依据。

关键词： 甲烷重整； 制氢； Aspen Plus； 数值模拟

中图分类号： TQ 114.2                       文献标志码： A

 Numerical Simulation of Methane Steam Reforming for Hydrogen Production

FENG Liangjing, CAO Changqing

(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract: By selecting the appropriate unit operation models and thermodynamic methods in process simulation software Aspen Plus, the simulation of methane steam reforming (MSR) for hydrogen production system was accomplished in this work. Effects of watercarbon ratio, operating temperature, operating pressure in the reactor on hydrogen yield were researched. The simulation results showed that hydrogen yield increased with watercarbon ratio increasing. When the pressure was low, the growth trend of hydrogen yield in the reforming reactor (R1) was faster with the operating temperature increasing. But when the pressure was higher, the operating temperature on the hydrogen yield was relatively small. When the temperature was low, the curves of operating pressure versus hydrogen yield in the R1 were similar to exponential function. However, when the operation temperature was high enough, the relation between them was quadratic function. The result was in agreement with the reactions of MSR and transforming, so the simulation results can provide theoretical basis to the improvement of energyefficient and to the development of the production process.

Key words: methane reforming; hydrogen production; Aspen Plus; numerical simulation

稿日期： 20131107

作者简介： 冯靓婧（1989—），女，硕士研究生.                *通信联系人.