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Start-up and wrong-way behavior in a tubular reactor: dilution effect of the ca...
Quina, Margarida M. J.; Ferreira, Rosa M. QuintaThe start-up and the wrong-way behavior of a fixed-bed reactor were analyzed through one-dimensional heterogeneous and pseudo-homogeneous models. The simulation work was based on the methanol oxidation to formaldehyde, which takes place in a fixed-bed reactor with two distinct zones. In the first part of the reactor, the catalyst was diluted with inert, and in the second zone the catalyst is pure. This activity...
Model comparison and sensitivity analysis for a fixed bed reactor with two cata...
Quina, Margarida M. J.; Ferreira, Rosa M. QuintaIn this work, comparisons between the behaviour predicted by different types of mathematical models are presented. The system studied was the partial oxidation of methanol to formaldehyde, which occurs in a fixed bed reactor with two distinct zones: at the entrance the catalyst is diluted with inert, followed by a region with pure catalyst. This type of distribution of the catalyst activity leads to different t...
Thermal Runaway Conditions of a Partially Diluted Catalytic Reactor
Quina, Margarida M. J.; Ferreira, Rosa M. QuintaThe generalized parametric sensitivity criterion was used to obtain runaway diagrams for one- and two-dimensional heterogeneous models and a one-dimensional pseudo-homogeneous model. The simulation work was based on the partial methanol oxidation to formaldehyde, which occurs in a fixed-bed reactor, with two distinct catalytic zones. At the inlet of the reactor, the catalyst was diluted with inert packing follo...
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