کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
152979 | 456515 | 2008 | 14 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Interactions between reaction kinetics in ATR-reactors and transport mechanisms in functional ceramic membranes: A simulation approach Interactions between reaction kinetics in ATR-reactors and transport mechanisms in functional ceramic membranes: A simulation approach](/preview/png/152979.png)
In this investigation the interaction between the mass transport in separation membranes and the autothermal steam-reforming in a membrane reactor was studied with a special focus on the consequences for designing smart materials that influence the reactor performance. A steady-state 1D-model was used to determine optimal thicknesses of Pd/Ag-layers for separating hydrogen gas from the reactor. The results indicate that a 400 nm layer is optimal for reactor temperatures ranging from 450 to 600 °C. To attain ideal isothermal reaction conditions, a spatial dynamic model containing an oxygen feeding controller was employed. It showed that depending proportionality of temperature with a small differential part, a controller is best suited for minimize deviations from the isothermal behaviour. In this work, an oxygen flux characteristic of the controller was used to simulate a functionalized membrane with the same characteristic. The obtained results are almost as good as in the ideal case with values up to 99% reaction yield at 600 °C in a 100 mm tube reactor.
Journal: Chemical Engineering Journal - Volume 142, Issue 3, 1 September 2008, Pages 225–238