High Temperature Energy Storage Performances of Methane Reforming with Carbon Dioxide in Tubular Packed Reactor

High temperature heat transfer and energy storage characteristics of methane reforming in tubular packed reactor are investigated under different operating temperature and inlet conditions. Experimental results show that the methane reforming in tubular packed reactor can efficiently storage high temperature thermal energy, and the thermochemical storage, sensible heat increment and heat loss are all very important. As the operating temperature increases, the thermochemical storage efficiency first increases for methane conservation rising and then decreases for heat loss rising. When the operating temperate is 800oC, the methane conservation is about 80%, and the thermochemical storage efficiency and total energy efficiency can be higher than 45% and 70%. The methane reforming process is further simulated using the laminar finite-rate model and Arrhenius expression, and the simulated temperature distribution, methane conversion and energy storage efficiency totally have good agreements with experimental data.