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Title of the thesis: « Control of scaling by guided waves ultrasounds »

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General information

Reference : UMR7274-MARLEP-001
Workplace : NANCY
Date of publication : Wednesday, December 05, 2018
Scientific Responsible name : LE PAGE Marie ; MUHR Hervé
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 February 2019
Proportion of work : Full time
Remuneration : 1 768,55 € gross monthly

Description of the thesis topic

The thesis proposed takes part into of the control of precipitation and crystallization processes, in close connection with the industrial world, where equipments' scaling is a major concern. The fields of application are widespread and concern industrial reactors, heat exchangers, water pipes, boat hulls...
Indeed, the use of physical treatments using appropriate tools, is very promising, because the action is done on the surface that clogs, and not on the solution in contact with the surface. The first studies on the use of guided waves ultrasounds show new and ambitious perspectives. Beyond the industrial application, the understanding of the mechanisms involved will make it possible to adapt the industrial tool to the desired application, and thus proves to be a scientific challenge of interest.

Thesis major steps:
- Bibliographic research, analysis of existing data,
- Installation of an experimental laboratory device to study scaling, with and without ultrasonic waves,
- Demonstration of the feasibility and the interest of the designed treatment,
- Determination of optimal operating conditions,
- Development and implementation on pilot scale on heat exchangers.

For this study we will be particularly interested in the precipitation of calcium carbonate, and deposition of matter on solid surfaces.

Work Context

Financement, projet et partenariats industriels :
This work is part of a collaborative project, funded by BPI France and the Feder / Region Grand 'Est, with 3 industrial partners and another university laboratory. Regular meetings and associated deliverables will punctuate the progress of the thesis.

Constraints and risks

None

Additional Information

None

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