基于Fe₃O₄/FeO两步法制取合成气参数研究

The effect of operating parameters on syngas production rate was numerically investigated based on iron oxide two-step method.The mole fraction of syngas in the product was calculated with the assistance of chemical vapor deposition reactor in CHEMKIN software.And the effects of different operating parameters (reaction gas ratio, gas inlet velocity, gas inlet temperature and reactor surface temperature) on the mole fraction of syngas were obtained.The results show that the molar fraction of syngas increases firstly and then decreases when it reaches the peak value as the increasing in the ratio of water steam-carbon oxide in reaction gas.The reactor surface temperature and the ratio of reaction gas have a greatly effect on the molar fraction of syngas.The increasing in both reactor surface temperature and gas inlet temperature can promote the value of the molar fraction of syngas.The increasing in gas inlet velocity has a negative effect on the value of the molar fraction of syngas.The reaction extent of iron oxide with the mixture gas of water steam and carbon oxide intensely react in the front zone of the reactor.As the reaction content proceeding, the molar fraction of syngas gradually decreases along the central line of the reactor.The results can provide a theoretical guide for optimizing the operating parameters of syngas production based on iron oxide two-step method.