Tesi etd-02242025-211215 |
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Tipo di tesi
Tesi di laurea magistrale
Autore
LUNARDI, MIRCO
URN
etd-02242025-211215
Titolo
The use of recirculation in refining
Dipartimento
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
TECNOLOGIA E PRODUZIONE DELLA CARTA E DEL CARTONE
Relatori
relatore Prof. Frosolini, Marco
tutor Dott. Liuzzo, Vincenzo
tutor Dott. Liuzzo, Vincenzo
Parole chiave
- fibrillation
- paper
- pulp
- refining
Data inizio appello
18/04/2025
Consultabilità
Non consultabile
Data di rilascio
18/04/2095
Riassunto
This thesis aims to evaluate the possibility of using recirculation in the refining of short fiber. This study was conducted using the PM3 machine from the Sofidel plant in Porcari (LU) as a test bench. To extract the data necessary to evaluate the use of recirculation, various tests were conducted (on different types of pulps) including Schopper-Riegel degrees (SR°), Kajaani, measurement of retention and zeta potential. In conclusion, the following data was analyzed to evaluate, compare and discuss parameters such as pulp cost (long fiber savings), energy consumption, characteristics of the finished product.
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