Wang Xinhe, Wei Jinjia, Zhang Junshe
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
ACS Omega. 2020 Mar 2;5(10):5401-5406. doi: 10.1021/acsomega.9b04464. eCollection 2020 Mar 17.
Super-dry reforming of methane (CH + 3CO → 2HO + 4CO) is a very promising route for CO utilization. To maximize the yield of CO, a water-gas shift reaction (CO + HO → CO + H) should be circumvented. Combination of dry reforming of methane, redox reactions (metal oxide is reduced by CO and H in one step and then oxidized by CO in the next step), and CO sorption in a fixed-bed reactor was proposed as a potential approach to suppress the water-gas shift reaction. It was demonstrated that this isothermal operation can produce two separate streams, one is rich in steam and the other in CO, in a redox cycle at 750 °C. However, both the thermodynamic analysis and experimental investigations suggest that steam- and CO-rich streams may not be produced sequentially in the redox mode at 750 °C.
甲烷超干重整（CH + 3CO → 2HO + 4CO）是一种非常有前景的CO利用途径。为了使CO的产率最大化，应避免水煤气变换反应（CO + HO → CO + H）。有人提出将甲烷干重整、氧化还原反应（金属氧化物先在一步中被CO和H还原，然后在下一步中被CO氧化）以及在固定床反应器中的CO吸附相结合，作为抑制水煤气变换反应的一种潜在方法。结果表明，这种等温操作在750℃的氧化还原循环中可以产生两股独立的物流，一股富含蒸汽，另一股富含CO。然而，热力学分析和实验研究均表明，在750℃的氧化还原模式下，富含蒸汽和CO的物流可能不会依次产生。
