Valmet to Supply White Liquor Pressure Disc Filter to Daio Paper in Japan
(Helsinki, Finland, Jan. 2, 2017) Valmet said that it will deliver a white liquor pressure disc filter to Daio Paper Co. Ltd’s Mishima pulp mill in Japan. The new filter is scheduled to start-up in September, 2017.
The value of this kind of an order is typically less than EUR 5 million, Valmet said.
“Daio Paper planned for a new white liquor filter to be installed in parallel with the existing two lines of white liquor filters. This investment is done in order to be able to increase the white liquor production, which was limited in the existing lines,” said Jiro Nakamura, Product Sales Manager at Valmet.
According to Valmet, white liquor filters are used in pulp mills’ chemical recovery process to secure a consistent quality of the white liquor, with an optimal strength suitable for the plant. Modern digesters need a high and consistent quality of white liquor to produce the optimal pulp quality and yield in cooking.
Valmet’s delivery includes a new OptiDisc WL filter, pumps piping, valves, platforms, erection and start-up services. The OptiDisc WL filter produces completely clear white liquor and washes the lime mud. The very high white liquor yield increases upstream capacity and eliminates the potential process disturbances that increased amount of dregs, and other non-process elements (NPE’s) in the white liquor, can cause in the pulp cooking process.
Daio Paper Co. Ltd’s Mishima mill was established in 1943 and currently has a pulp production of 2.3 million tonnes per year and a paper and paperboard production of 2.3 million tonnes per year.
Valmet is a leading global developer and supplier of services and technologies for the pulp, paper and energy industries. To learn more, please visit: www.valmet.com (Source: Valmet)
Cover Image: White-liquor filter (courtesy Valmet)