Microstructured Reactor as a Pre-Turbo Catalytic Converter

Iwaniszyn, Marzena; Ochońska, J.; Jodłowski, Przemysław J.; Łojewska, Joanna; Matuszek-Chmurowska, Aneta; Kołodziej, Andrzej

doi:10.1007/s11244-013-9984-6

Cited by 11 publications

(2 citation statements)

References 8 publications

(22 reference statements)

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“…Short monoliths, called short-channel structures, , enable the operation of the whole reactor under conditions of developing laminar flow, thus intensifying the transport properties. They are considered by the automotive industry to be best placed before the turbocharger in vehicle engines (just behind the exhaust valves), where gas velocity achieves 100 m/s and total conversion of exhaust gases reaches 50–70%. − Other advantages of short-channel structures are their high specific surface area, good efficiency of layered catalysts, and increasing resistance to hot-spots due to intense heat transfer. Moreover, an interesting and promising feature of these structures is the possibility to control the transport and friction properties within broad ranges by channel length regulation alone. , However, they display somewhat higher flow resistance when compared with long-channel monoliths.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Combustion of Low-Concentration Methane on Structured Catalyst Supports

Gancarczyk

Iwaniszyn

Piątek

et al. 2018

Ind. Eng. Chem. Res.

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Innovative structured catalyst supports, like solid foams, wire gauzes, and short-channel structures, are considered in methane catalytic combustion. For comparison, classical supports such as packed beds and monoliths are also taken into account. Moreover, two catalysts, displaying “fast” and “slow” kinetics, are examined. The performance efficiency criterion is applied to account for a balance between the process conversion, mass transfer, and flow resistance. Another “technological” approach compares reactor length and the corresponding pressure drop required to reach the desired conversion rate. Results indicate that wire gauze, solid foam, and short-channel structure are highly promising catalyst supports due to their intense heat/mass transfer and moderate flow resistance, particularly for fast catalytic reactions. For slow reactions, monoliths seem to be the best as they exhibit the lowest flow resistance.

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Section: Introductionmentioning

confidence: 99%

Catalytic Combustion of Low-Concentration Methane on Structured Catalyst Supports

Gancarczyk

Iwaniszyn

Piątek

et al. 2018

Ind. Eng. Chem. Res.

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“…(6)). This approach is similar to that applied by Wieghardt [8] or Chhabra and Richardson [9] during modeling of flow through wire meshes. For both triangular and sinusoidal structures coefficients A 1,2 and B 1,2 were estimated assuming that the length of the structure (L) does not influence the drag coefficient C D (i.e.…”

Section: Flow Resistancementioning

confidence: 96%

Short-Channel Structured Reactor as a Catalytic Afterburner

et al. 2013

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Short-channel structures of triangular and sinusoidal channel cross-sectional shape were examined experimentally to find their heat (or mass) transfer and flow friction (flow resistance) characteristics. A particular emphasis was placed on influence of the channels length (referred to its hydraulic diameter) on transport and hydrodynamic characteristics. The transport and friction properties were correlated in terms of dimensionless channel length with satisfactory accuracy. The dimensionless channel length was proved to be a key factor that determines the transport and friction coefficients. Comparison with ceramic monolith has shown possibility of using the structures in automotive catalytic converters.

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