VARIABILITY IN LIME-MUD FEED RATE INDUCED IN THE LIME-MUD FILTER: CONSEQUENCES AND ACTIONS
Artikel i vetenskaplig tidskrift, 2017
This study shows that despite keeping both lime-mud slurry flow and density constant, lime-mud moisture content and feed rate from the
filter to the lime kiln can vary significantly. These variations, which were previously not detected in the mill, were revealed after installation of
a band scale and a moisture detector. It was found that cleaning the doctor blade caused a periodic disturbance in the lime-mud feed rate
to the kiln. The variations in moisture content, however, were too minor to disrupt the stability of a kiln equipped with a flash dryer. This work
resulted in a new and better way of continuously estimating available CaO and reburned lime production rate.
filter to the lime kiln can vary significantly. These variations, which were previously not detected in the mill, were revealed after installation of
a band scale and a moisture detector. It was found that cleaning the doctor blade caused a periodic disturbance in the lime-mud feed rate
to the kiln. The variations in moisture content, however, were too minor to disrupt the stability of a kiln equipped with a flash dryer. This work
resulted in a new and better way of continuously estimating available CaO and reburned lime production rate.
CPR
carbon analyzer
dead load
doctor blade
LIme mud filter
calcimeter
Lime kiln
band scale
moisture content
Författare
Henric C O Dernegård
Södra Cell AB
Harald Brelid
Södra Innovation
Hans Theliander
Chalmers, Kemi och kemiteknik, Kemiteknik
Erik Berg
Optimation AB
Journal of Science and Technology for Forest Products and Processes
Vol. 6 3 19-27
Ämneskategorier
Trävetenskap
Annan kemiteknik
Metallurgi och metalliska material