低浓度甲烷流向变换催化燃烧的研究

The catalytic combustion of low concentration methane was systematically investigated in a pilot scale reverse flow reactor. The influences of cyclic period, the concentration of reactant and the space velocity on the operation performance of reactor were studied. The experimental results showed that, for the reverse flow reactor, cyclic period, the concentration of reactant and the space velocity were three important operation parameters that obviously affected the axial temperature profiles of reactor. It′s possible to maintain autothermal operation with high conversion of methane even though the methane concentration decreased to 0.5%. When the methane concentration was increased up to 0.8%, the highest temperature of catalyst bed was beyond 700 ℃. It suggests that the energy of the hot gas should be recovered and this reactive technology is able to be used in power production with low concentration methane.