摘要
采用石英玻璃管式反应器,考察B112型高温变换催化剂在高浓度CO(体积分率高于75%)氛围下的本征动力学特性,拟合实验数据并建立动力学模型,对幂函数动力学模型进行检验。结果表明:与传统铁系高温变换催化剂相比,该高温变换催化剂上变换反应活化能较低,其低温活性较好;该催化剂上CO对反应速率的影响偏小,是由反应组分中较高浓度的CO所导致;H_2O对反应速率的影响相对较大;CO_2对变换反应速率的抑制作用很大,因此为提高变换反应速率,应当减小CO_2的不利影响;H_2组分对反应速率的影响很小,实际应用中可以忽略。
The mierokineties of high temperature water-gas shift reaction for highly concentrated CO （volume fraction was more than 75%） over catalyst B112 was investigated in an isothermal quartz glass tube reactor. The experimental data was fitted, the microkinetic model was built up and the model was verified. The results showed that compared with normal traditional iron based shift catalysts, the activation energy of the water-gas shift reaction over catalyst B112 was lower. The influence of CO on reaction rate was less, which might be resulted from highly concentrated CO. The influence of H2O was greater. The presence of CO2 resulted in the decrease of reaction rate greatly. It was crucial to reduce the resistance effect of CO2 in favor of the water-gas shift reaction rate. The influence of H2 on reaction rate was slightly and could be neglected.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2010年第4期303-308,共6页
Chemical Reaction Engineering and Technology
基金
国家自然科学基金(50768006
50878101)
关键词
一氧化碳
黄磷尾气
水煤气变换反应
动力学
carbon monoxide
yellow phosphorus off-gas
water-gas shift reaction
kinetics
