Concentration and Temperature Profiles in a Tubular Reactor for Methanol Synthesis with an Outer-wall of Uniform Temperature. I. Profiles in a Reactor without a Heat Exchanger in a Catalyst Bed

概要

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On the basis of the experimental concentration and temperature profiles for one of the synthesis runs, the experimental rate curve has been drawn on a chart in which lines of constant conversion with reaction rates are given as ordinates and temperatures as abscissa. In a step by step calculation of the temperature profiles from the experimental profiles by the use of a set of analytical solutions of the heat balance equation, which includes the respective constant reaction heat terms given by the step by step distribution plot, the heat transfer coefficients are conveniently chosen to match the calculated profiles with the experimental ones. Taking the heat transfer efficiencies thus obtained into consideration, a comparison of the experimental rate curve with the maximum rate curve on the afore-mentioned chart discloses that, for attaining an efficient performance of the reactor, not only should the heat transfer referred to the outer tube surface be improved, but also the temperature rise in the catalyst bed should be controlled by a suitable means.
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