Valmet will supply an evaporation line to Sappi Southern Africa Ltd to be built at the company's pulp mill in Ngodwana, South Africa. The new evaporation line 3 will replace the existing line 1, and will meet the future needs of the mill's ongoing pulp production capacity expansion and steam economy improvement.
Finland-headed energy and forest industry technology major Valmet has announced that it has been contracted to supply an evaporation line to Sappi Southern Africa Ltd, a subsidiary of global pulp and paper major Sappi, to be built at the company’s pulp mill in Ngodwana, South Africa.
The new evaporation line 3 will replace the existing line 1, and will meet the future needs of the mill’s ongoing pulp production capacity expansion, together with existing evaporation line 2 that was upgraded by Valmet in 2013. The overall steam economy of the mill will also improve with this investment.
– The number 1 evaporator plant at Sappi’s Ngodwana Mill was commissioned when the mill was built in 1966. Recent upgrades to the mill’s product line and production expansions provided an opportunity to replace the original evaporator plant with a modern state of the art plant. Various companies submitted proposals for the expansion project and Valmet was successful in their submission for various reasons, including offering the best technical solution, said SW Engelbrecht, General Manager, Sappi Ngodwana Mill.
The value of the order has not been disclosed though, according to Valmet, an order of this type is typically valued below EUR 10 million. The new evaporation line is planned to be started up during the latter part of 2018.
– Valmet’s global teams, including South African organisation, have worked together with Sappi teams to create a new high-efficiency evaporation line for dissolving pulp liquor, an application where we have many good modern references globally, said B Syamsundar, Sales Director, Pulp and Energy, Valmet.
Scope of supply
Valmet will supply a 6-effect evaporation line tailor-made for dissolving pulp liquor application. The delivery covers main evaporator effects, a surface condenser, flash tanks, platforms and main supporting structures, a vacuum system, as well as vapor ducting and liquor circulation piping.
The new evaporation line 3, will feature same REVAP Concentrator technology as that used for recent evaporation line 2 upgrade, as well as five Tube Evaporators. The new evaporator line includes Valmet’s patented ICT (Internal Condensate Treatment) for producing more clean condensate for recycling in the mill. Line 3 will have a design capacity of 310 tonnes of water per hour, producing heavy liquor at 70 percent dry solids.
Facts
About SAPPI
Sappi is a global company focused on providing dissolving wood pulp, paper pulp, paper based and biorefinery solutions. The company manufacturing operations on three continents, which combined produce annually approximately 5.4 million tonnes of paper, 2.3 million tonnes of paper pulp, and 1.3 million tonnes of dissolving wood pulp.
Sappi Ngodwana mill produces 330 000 tonnes of paper pulp for own consumption, 210 000 tonnes of dissolving wood pulp and 380 000 tonnes of paper per annum. The mill generates its own energy in the form of steam and electricity from renewable and other sources. On average, the mill exports power to the national grid.
