Metso valves for Sappi expansion
3 Nov 2012
Helsinki – Metso will deliver all the automated process valves required for Sappi’s fiberline expansion in the Ngodwana mill in South Africa.
In this project, called Go-Cell, the existing fiberline is being expanded to produce chemical (specialised) cellulose, also known as dissolving pulp. In total, over 700 automated valves will be delivered during the final quarter of 2012, and the mill start-up is scheduled for early 2013.
The existing, large installed valve base in the mill makes it beneficial for Sappi to select Metso Neles products once again, as this will facilitate the successful management of shutdowns, inventories and spare parts, the supplier said.
Metso will supply all the automated on-off and control valves with intelligent Profibus positioners for the new fiberline, and for upgraded process areas in evaporation, recausticising and ash leaching.
The delivery includes valves in stainless steel, duplex stainless steel, titanium, SMO and ceramic material in sizes from DN25 to DN500. All valves are equipped with pneumatic cylinder actuators and intelligent positioners or limit switches.
The delivery also comprises Neles metal-seated ball valves, segment and triple eccentric Neldisc butterfly valves as well as Jamesbury soft-seated ball valves.
Metso will also supply specially designed high-consistency valves for the fiberline as well as capping and discharge valves for six batch digesters for the cooking plant. These, it said, will support the mill’s goals of increased efficiency and reduced energy consumption.
The expanded fiberline will produce 210, 000 tonnes per annum of chemical (specialised) cellulose, which is widely used in the textile, pharmaceutical and food industries. Sappi is the global leader in chemical (specialised) cellulose production.
