dc.contributor |
Toshihisa, Ueda |
dc.contributor.author |
Rodríguez Vallinas, Diego |
dc.date |
2017-07 |
dc.identifier.uri |
http://hdl.handle.net/2117/113984 |
dc.language.iso |
eng |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.publisher |
Keio University |
dc.rights |
Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria química |
dc.subject |
Fluid mechanics |
dc.subject |
Chemical reactions |
dc.subject |
Vinyl polymers |
dc.subject |
Mecànica de fluids |
dc.subject |
Reaccions químiques |
dc.subject |
Polímers vinílics |
dc.title |
Gel reaction flow patterns in a non-element reactor with two branch flows |
dc.type |
info:eu-repo/semantics/masterThesis |
dc.description.abstract |
In the framework of chemical and energy engineering fluids have been
the subject of many studies for a lot years. In some cases, these fluids upon
contact form gels. These gels have many applications like medical, food,
cleaning... The peculiarity of these materials that share both properties of
solids and liquids are yet to be described. In this study, a qualitative and
quantitative analysis of the mass transfer is carried out when in a reactor
without internal element 10 mass% PVA (polyvinyl alcohol) and 3 mass%
Borax are introduced. The PVA solution was supplied to the main flow pipe
at a constant inlet pressure of 20 kPa. The Borax solution was red dyed to
visualize in a better way the flow pattern and it is introduced at a constant
velocity of 30 mm/s during 16 seconds in a perpendicular direction to the nonelement
mixer. It has been previously studied that these compounds upon
interaction form a gel. This gel, for its future industrialized production must
be divided into independent capsules and for this PVA is introduced again by
a new branch to the reactor in order to divide into two parts the formed gel
pill. The second injection of PVA was dyed blue and parameters of velocity
and chemical composition were varied in order to know which are the
boundary conditions for the splitting phenomena. The analysis of the transfer
of matter is carried out by a code (also developed in the present work) of
Matlab of recognition of intensity of colors in images. The experiments have
been recorded. For the quantitative analysis, a pressure sensor has been
placed along the reactor which provides data along the reactor. |