甲烷合成催化剂抗积炭能力研究

Investigation on the ability of methanol synthesis catalyst to resist coking

在模拟焦炉气合成甲烷反应过程中,利用热重分析(TG),研究了催化剂在一定反应温度范围内的主要积炭类型,以及在不同工艺条件下的抗积炭能力。研究发现:反应温度500℃以上,催化剂的积炭类型以CH4分解为主。反应温度和CH4浓度对催化剂的抗积炭能力影响较大,温度越高积炭量越大,CH4浓度越高积炭量也越大。

In simulating process of synthesizing methane by coke-oven gas, the main coking type of the catalyst in certain range of temperature and the ability to resist coking under different conditions are studied by TG analysis. The results show that when the reaction temperature exceeds 500℃, the main coking type of the catalyst is due to decomposition of methane. The temperature and content of methane exert a tremendous influence on the ability to resist coking. The higher the temperature and content of methane, the more the coking amount is.