Publication

Influence of forced variations in rate of flow on mass transfer during a heterogeneous catalytic wall reaction

Albert Renken
1969
Journal Articles

Abstract

The effect of sound-induced reaction rate changes on mass transfer between the reactor wall and the gas was studied in the frequency range 275-1325 Hz and pressures ?165.7 decibel under laminar-flow and steady-state conditions. The catalytic hydrogenation of C2H4 in a tubular reactor is used as a model reaction. Owing to the increased mass transfer, the effective reaction rate consts. increase ?46% with increasing pressure and decreasing frequency of s ound. An empirical equation is derived for the mass transfer as a function of frequency, pressure, and av. gas rate. [on SciFinder (R)]

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https://infoscience.epfl.ch/entities/publication/883960da-ebfb-4312-86b7-89cb1e27e45a

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Albert Renken
1969
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/883960da-ebfb-4312-86b7-89cb1e27e45a

About this result

Related concepts (32)

Chemical reactor

A chemical reactor is an enclosed volume in which a chemical reaction takes place. In chemical engineering, it is generally understood to be a process vessel used to carry out a chemical reaction, which is one of the classic unit operations in chemical process analysis. The design of a chemical reactor deals with multiple aspects of chemical engineering. Chemical engineers design reactors to maximize net present value for the given reaction.

Laminar flow

In fluid dynamics, laminar flow (ˈlæmənər) is characterized by fluid particles following smooth paths in layers, with each layer moving smoothly past the adjacent layers with little or no mixing. At low velocities, the fluid tends to flow without lateral mixing, and adjacent layers slide past one another like playing cards. There are no cross-currents perpendicular to the direction of flow, nor eddies or swirls of fluids. In laminar flow, the motion of the particles of the fluid is very orderly with particles close to a solid surface moving in straight lines parallel to that surface.

Pressure

Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure. Various units are used to express pressure. Some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre (N/m2); similarly, the pound-force per square inch (psi, symbol lbf/in2) is the traditional unit of pressure in the imperial and US customary systems.

Related publications (32)

Influence of forced variations in rate of flow on mass transfer during a heterogeneous catalytic wall reaction

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