Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Fixed-bed reactors"”.
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MULTIPHASE REACTION STUDIES IN STIRRED TANK AND FIXED BED REACTORS
A biphasic stirred tank reactor and a trickle bed reactor were studied to understand complex multiphase reactor behavior arising from mass transfer effects on reactions and to improve modeling accuracy for rational design and optimization.
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Gas phase heterogeneous catalyst performance testing in laboratory fixed-bed reactors
… catalysts for gas phase reactions in tubular fixed bed reactors is considered. Transport limitations and particularly internal mass transfer limitations are often cited in this case. Many have given general discussions and guides for effective catalyst performance testing, reviewed or put …
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Comparing the performance of different catalyst packings for Fischer-Tropsch synthesis
… supply. To make this feasible, small-scale FT reactors must be simple to operate and achieve high single-pass conversion. Multi-tubular fixed-bed reactors are ideal for realising this as they are relatively easy to scale-up and operate when compared to other reactor technologies. However, …
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The use of coherent anti-Stokes Raman Spectroscopy as a diagnostic technique for studying the hydrogenation of carbon moxide in a tube-wall reactor
… to coal~rich developing countries. Current reactors are of the fixed bed type, but there is an interest in using tube-wall reactors in order to reduce the large pressure drops normally associated with fixed bed reactors. Coherent Anti-Stokes Raman Spectroscopy (CARS) is a relatively new …
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Kinetics and Reaction Engineering Aspects of Syngas Production by the Heterogeneously Catalysed Reverse Water Gas Shift Reaction
… The experiments were performed in a down-flow fixed bed quartz reactor at atmospheric pressure. The reverse water gas shift (RWGS) reaction was examined in both the forward and reverse direction. In addition to these experiments, the consecutive reaction of CO to CH4 was also studied. The …
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Desarrollo de un nuevo proceso de combustión con captura de CO2 empleando óxidos metálicos
… temperature solid looping cycles using packed bed reactors. It consists in the combustion of methane and CO2 capture in fixed bed reactors using ilmenite as solid oxygen carrier, a low-cost material extensively studied in the literature. The operation at high pressure allows the use of highly …
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Kinetic models for the Pt/CeO₂ catalysed water-gas shift reaction
… range of 270 - 300 °C using 16 parallel fixed bed reactors (high throughput experimentation) over a 0.5 wt% Pt/CeO₂ catalyst. The feed composition was varied over the ranges 2 - 12 mol% CO, 20 - 45 mol% H₂O, 4 - 15 mol% CO₂ and 25 - 55 mol% H₂. An online micro gas chromatograph (μGC) was …
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Design and testing of an integrated catalytic membrane reactor for deoxygenating water using hydrogen for down-hole injection and process applications.
… They were characterised and tested in membrane reactors by feeding hydrogen saturated water under varying operating conditions and the results compared to that of a fixed-bed reactor. The catalytic activities of the different membranes resulted in different deoxygenating efficiencies. The 6000nm …
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Development of a hybrid ion exchange-catalyst system to denitrify ion exchange waste brine
… reactor performance in continuously stirred and fixed bed reactors; and optimize a fixed bed reactor to reduce hydrogen mass transfer limitations to the catalyst surface, and (3) Evaluate selectivity of Pd-In/AC catalyst using different reactor types and matrix conditions. A model of the …