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https://doi.org/10.37358/Rev.Chim.1949

OSIM Nr. R102355
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Revista de Chimie (Rev. Chim.), Year 2015, Volume 66, Issue 4,





ANCUTA BALLA, DAMIAN AXENTE, CRISTINA MARCU
Sizing of a Catalytic Reactor for Sulfuric Acid Reduction
to Sulfur Dioxide Based on the Activation Parameters
of SO3->SO2 Reaction

Abstract:

The reduction of sulfuric acid to sulfur dioxide, a chemical process of industrial interest, needs catalyst and high temperature to proceed. In this work the activation parameters of the thermo-catalytic reduction of SO3 to SO2 in the presence of three commercial catalysts: 2 wt. % Pt/TiO2, 5 wt. % Pd/Al2O3 and a-Fe2O3 were determined considering the first order dependence of the reduction reaction rate on SO3 concentration in the gaseous mixture passing over the catalyst bed. Based on activation parameters the sizing of the catalytic reactor was performed. There are no big differences between dimensions of the catalyst beds, a-Fe2O3 being advantaged because is cheaper and more available than Pd or Pt supported catalysts. When both the catalyst bed volume and mass are considered constant, the fractional conversion exponentially decreases with the mass flow rate of inlet sulfuric acid. Keywords: sulfuric acid reduction, catalysts, activation parameters, reactor sizing


Issue: 2015, Volume 66, Issue 4
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