Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon monoxide component
Patent
1992-08-07
1993-10-19
Breneman, R. Bruce
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon monoxide component
423 75, 95103, B01J 800
Patent
active
052543684
ABSTRACT:
Integral coupling of reaction with a single-bed rapid cycle pressure swing adsorber provides a hybrid device having improved performance characteristics including better separation and more efficient reactions. A single packed bed containing a mixture of catalyst and adsorbent is featured. Gaseous reactants are fed into the bed in a sequence including inflow, relax, and backflow, portions. The hybrid device, designated as a periodic separating reactor (PSR), enhances both the total conversion and selectivity of reactions. In an illustrative example with respect to CO oxidation, conversion 2.5 times that typically exhibited for the corresponding steady-state plug flow reactors was observed. The separation performance (selectivity) of the hybrid device/process can be enhanced, illustratively for irreversible reaction systems, up to 10.sup.4 times that possible in pressure swing adsorption processes without reaction. The particular exit stream in which a component is enriched is a function of reaction rates, feed composition, adsorption capacities, delivery flow rate, and the feed fraction of the process cycle. Separation between reaction components, local reduction of reactant partial pressures, changes in the residence time distribution, and the nature of the reaction rate law contribute to the observed process performance. A modeling scheme is proposed to describe the behavior of the hybrid device and the expected results from application of the process to any particular reaction.
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Kadlec Robert H.
Vaporciyan Garo G.
Breneman R. Bruce
University of Michigan
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