摘要：This paper describes the catalytic combustion of ventilation air methane in a new pilot scale reverse-flow reactor, which can maintain elevated temperatures and be capable of achieving high methane conversion in air streams at methane concentrations as low as 0.2% by volume. The effects of the initial temperature, switch time, space velocity and humidity on the reactor performance was investigated.The results showed that active component Pd dispersed evenly on the surface of the catalyst benefited to methane catalytic reaction. Reduction was useful for the improvement of catalyst performance on methane conversion. Short switch time can reduce exhaust gas heat loss and the reactor can sustain itself under the low concentration of feed gas. The reactor system would eventually achieve different cyclic steady state when the inert and catalyst sections were pre-heated to the appropriate temperature. Methane conversion decreased due to the decrease of the catalyst activity produced by water.
