Autothermal treatment

The general advantages reported for monoliths in SCR applications still hold for reverse-flow operation. Furthermore, it has been claimed that the use of honeycomb structures in reverse-NO processes allows for autothermal treatment of gas stream with even lower NO concentrations with respect to packed beds. On the basis of a general two-phase model, it has been evaluated that an adiabatic temperature rise of less than 10°C (NO < 500 ppm) permits a stable periodic regime with monoliths, whereas at least 15°C is required with packed beds. 

Fuel and fuel treatment Except for hydrogen gas, normal fuels need to be reformed before utilization. The water reforming needs to add water to hydrocarbons when water is not supplied in a proper amount, carbon deposition will take place. Deposited carbon can act as catalyst for further carbon deposition, leading to collapse of fuel flow. Similarly, when an amount of air for partial oxidation or autothermal oxidation is not well controlled, essentially the same... 

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