泡沫碳化硅基整体催化剂用于强化甲烷绝热转化制合成气

Foam SiC Based Monolithic Catalyst Used for Intensifying Methane Adiabatic Reforming for Production of Syngas

为实现强化耦合甲烷部分氧化和水蒸汽重整的绝热转化反应,采用了整体泡沫碳化硅为载体制备镍基整体催化剂,进行了整体结构催化剂床层优化设计,在由6块整体催化剂组成的4.8 cm床层高度的固定床反应器上进行了催化剂小试样品的性能评价,并完成了中试验证。通过采用多层催化剂床层结构设计,避免了整体催化剂反应物流旁路,同时还实现氧二次分散。首次开展进料规模为200 t/a天然气绝热转化中试实验验证了天然气绝热转化技术的安全性,为该技术进一步发展放大奠定基础。

For intensifying coupling partial oxidation and stream reforming of methane, a Nickel based catalyst was prepared with foam monolithic SiC as support. The structure of monolithic catalyst bed was optimized and the catalytic performances were investigated in a reactor with 4.8 cm height fixed bed composed of 6 block catalysts. A pilot experiment was accomplished. A bed structure consisted of multilayer catalysts was proposed for overcoming the bypass of reaction flow from the blank zoon of catalyst bed, and simultaneously bringing into the second distributing effect of oxygen. For the first time, a pilot-scale test of 200 t/a methane reforming based on this monolithic catalyst was carried out and the safety of adiabatic methane reforming technology was verified. Current research lays the foundation of further development of current technology.