Refiner Energy Optimization Utilizing Fiber Analyzer
Forslund, Atte (2020)
Åbo Akademi
2020
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2020111190000
https://urn.fi/URN:NBN:fi-fe2020111190000
Tiivistelmä
New ways to monitor papermaking processes are developed constantly to improve electricity- and chemical consumption, and to minimize paper waste. The methods used today usually rely on the produced papers’ measured properties. These methods cannot predict the papers’ properties. The paper properties are measured on the already produced paper reel meaning that changes cannot be made to the already produced paper reel. If the paper properties does not meet the customer requirements, it is classified as waste.
This study aims to investigate ways to monitor and predict both fiber- and paper properties. Regression analysis and trial runs are conducted to study the fibers’ impact on the paper properties and to find optimal refiner parameters. The trial runs’ purpose is to find optimal refiner configurations and power, and to see the refiners’ impact on fiber properties.
The results of this study suggest that LC-refiners could be bypassed when producing white sack paper grades. This entails that a pipeline should be constructed at the mill to enable the LC-refining bundle to be bypassed. This could save up to 70.000€ yearly in electricity. Further, the results from the trial runs shows a correlation between the fibers’ SR° and the papers’ Gurley-value. However, there are some problems with the fiber analyzer which could result in unreliable fiber measurements.
This study aims to investigate ways to monitor and predict both fiber- and paper properties. Regression analysis and trial runs are conducted to study the fibers’ impact on the paper properties and to find optimal refiner parameters. The trial runs’ purpose is to find optimal refiner configurations and power, and to see the refiners’ impact on fiber properties.
The results of this study suggest that LC-refiners could be bypassed when producing white sack paper grades. This entails that a pipeline should be constructed at the mill to enable the LC-refining bundle to be bypassed. This could save up to 70.000€ yearly in electricity. Further, the results from the trial runs shows a correlation between the fibers’ SR° and the papers’ Gurley-value. However, there are some problems with the fiber analyzer which could result in unreliable fiber measurements.
Kokoelmat
- 222 Muu tekniikka [54]