【摘要】 以低压法（5MPa）甲醇合成为背景,建立了气相法甲醇合成化学平衡常数的实验测定系统,测定了不同温度和压力下,CO、CO₂同时加H₂合成CH₃OH反应的平衡组成及化学平衡常数K_p,同时以实验结果为依据,对K_p的理论推算进行了探讨,其中对文献中计算以逸度表示的平衡常数K_f的各种方程进行了比较。结果表明,基于Cherednichenko的K_f,Ⅰ和Bissett的K_f,Ⅱ,采用修正的SRK方程,对K_p的推算取得了满意的结果。更多还原

【Abstract】 The chemical equilibrium compositions and equilibrium constants of methanol synthesis reaction, starting from carbon monoxide, carbon dioxide and hydrogen, were studied experimentally at p=4. 0-6. 6MPa and t=220-260℃. Meanwhile, based on the experimental data of Kp measured in this paper, the thermodynamic prediction of Kp from Kf and equation of state was studied and it was found that the chemical equilibrium of methanol synthesis can be described well by using Cherednichenko’s Kf Ⅰ and Bissett’s Kf, Ⅲ relationship and a modified SKR equation.更多还原