膜反应器中环己烷脱氢反应的热力学分析

对膜反应器的指标反应——环己烷脱氢生成苯进行了热力学分析，计算了反应体系在不同温度条件下的吉布斯自由能变、平衡常数及不同H2移出率时环己烷的平衡转化率，据此比较了膜反应器相对于固定床反应器在提高环己烷平衡转化率方面的潜力，并进一步分析了膜反应器内不同H2移出率时环己烷平衡转化率相对于固定床反应器增加的百分点数及不同H2移出率对反应苛刻度的影响。结果表明，膜反应器可有效地提高环己烷的平衡转化率，并可降低反应的苛刻度，具有良好的工业应用前景。

THERMODYNAMIC ANALYSIS OF CYCLOHEXANE DEHYDROGENATION IN MEMBRANE REACTOR

The cyclohexane dehydrogenation is a model reaction of membrane reactor. The thermodynamic analysis was used to calculate the change of Gibbs free energy, equilibrium constant at different temperatures, and the cyclohexane equilibrium conversion with different removal rates of hydrogen of the reaction system. And the influence of different removal rates of hydrogen on cyclohexane equilibrium conversion was investigated. Further the severity of the reaction and the increasing percentages of equilibrium conversion of cyclohexane with different removal rate of hydrogen were investigated and compared with that of the conventional fixed bed reactor. The potential use of membrane reactor in improving cyclohexane equilibrium conversion of the reversible dehydrogenation reaction was described. It is found that the cyclohexane equilibrium conversion achieved in membrane reactor is higher than that in conventional fixed bed reactor. The results show that membrane reactor can effectively improve the equilibrium conversion of cyclohexane, and reduce the severity of the reaction, indicating its good prospect for industrial applications.