Reaktoren für Fluid-Fluid-Reaktionen: Schlaufenreaktoren

Schlüter, Michael; Warnecke, Hans‐Joachim; Zehner, Peter

doi:10.1007/978-3-662-56434-9_28

Cited by 1 publication

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An internal circulation can be achieved by use of a centrally placed tube. Concepts of jet loop reactors with an external circulation also exist [5]. In the presented research project, a top mounted two-phase nozzle is chosen to introduce the driving momentum of the loop into the system.…”

Section: Reactors and Scale-downmentioning

confidence: 99%

“…where P is the power introduced into the system, which is considered to be dissipated in the liquid volume V l . The power P is equalled to the kinetic energy flux Ė, which is introduced into the system by the pumped liquid [5] and therefore can be described by the pumped liquid mass flow rate ṁf and the liquid exit velocity w n,l of the fluid at the nozzle. Assuming an incompressible fluid, the mass flow rate in turn can be described by the pumped liquid volume flow rate Vl and its density ρ l .…”

Section: Reactors and Scale-downmentioning

confidence: 99%

“…Here, the gas phase is intensively dispersed into small bubbles by shear induced by the jet, achieving a large specific interfacial area between the phases [3,5]. A wide range of different (relative) dimensions and designs of nozzles, etc.…”

Section: Introductionmentioning

confidence: 99%

“…exist and have been part of scientific investigations for several decades (compare [4,[6][7][8][9][10][11][12][13][14][15][16][17]). Due to its slim design, which results in a relatively low space requirement, and with its external driving mechanism in form of pumps, this reactor type is well suitable to be used for processes requiring elevated pressures, since sealing problems (compared to other mechanical components like stirrers) can be minimised [5,18]. The simplicity of the system also makes it low-maintenance.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Scale-Up Strategies of Jet Loop Reactors for the Intensification of Mass Transfer Limited Reactions

Maly

Schaper

Kuwertz³

et al. 2022

Processes

View full text Add to dashboard Cite

For the purpose of the intensification of an industrial-scale gas-liquid process, the implementation in an alternative reactor concept is investigated at Hamburg University of Technology (TUHH) in cooperation with Ehrfeld Mikrotechnik GmbH. Existing process operation data from a bubble column hint at a mass transfer limitation of the gas-liquid reaction. In the project, a jet loop reactor (JLR) is chosen to increase the specific interfacial area between gas and liquid, and thus increase mass transfer, while keeping the reactor system mechanically simple and low-maintenance. For the investigation, a laboratory scale reactor has been designed on the basis of an existing industrial scale process and scaled according to a pilot scale reactor available at TUHH. For scaling, geometric similarity is desired, while specific energy dissipation rate and volumetric gas input are kept constant for the chosen scale-up strategy. Between the two different scales, the reactors are successfully characterised in a water-air system with regards to the important mass transfer, among other parameters. A pressure- and chemical-resistant twin of the laboratory-scale reactor is provided to the project partner for trials under real process conditions with the original material system. The presented work shows that the JLR concept can be transferred sufficiently well between different scales when suitable parameters are chosen, and offers a wide operating window. The investigations aim to provide a basis for a future scale-up of the chemical process in the JLR system to the industrial scale.

show abstract

Section: Reactors and Scale-downmentioning

confidence: 99%

Section: Reactors and Scale-downmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%