Valmet to deliver key pulp mill technology for ARAUCO's new pulp line in Chile
Finland-headed forest industry and energy technology provider Valmet Oyj and Celulosa Arauco y Constitucion S.A. (ARAUCO) have finalized the contract to deliver pulp drying and baling, recovery boiler and biomass boiler for ARAUCO's MAPA project. The delivery is part of ARAUCO's major investment to expand current production capacity and build a new pulp production line at the Arauco Mill in the Bio Bío Region, Chile.
In October 2018, Valmet signed a Letter of Award (LoA) with global forest products major Celulosa Arauco y Constitucion S.A. (ARAUCO) to supply key pulp mill technology including pulp drying and baling, a recovery boiler and a biomass boiler as part of ARAUCO’s US$2.35 billion investment in the modernization and extension of its Arauco Mill in Chile. The value of the order has not been disclosed although Valmet says that a project of this size and scope is typically valued at EUR 250-300 million.
One of the largest pulp investments in the world
The modernization and extension of Arauco Mill is the largest investment in ARAUCO’s history and one of the largest pulp investments in the world. The project includes the construction of a new production line, line 3, with an annual capacity of 1.56 million tonnes. The new line is estimated to start operation in 2021.
In addition to high quality pulp, the expansion project allows us to continue generating clean and renewable energy from forest biomass, due to the construction of a new biomass boiler. The boiler supplies clean energy to the mill and the surplus electricity will be delivered to the National Electrical Grid, explained Franco Bozzalla, Senior VP Pulp and Energy at ARAUCO.
According to Valmet, its delivery represents the “latest and most modern” pulp and energy production technologies designed for productivity with reduced chemical, water, and steam consumption. The proven technology provides high reliability, safe operation, and environmental performance.
The pulp drying line will have a daily capacity of 5 000 air dry tonnes (Adt) and consist of two complete drying machines, including four high capacity baling lines. The pulp drying machines are designed for high availability with a production capacity of 2 500 tonnes/day and a web width of 8 meters for each machine, with a possibility for future capacity increase through debottlenecking.
The pulp drying line includes advanced process control and bale management systems, which allow high-quality production continuously. The drying line also includes low energy and heat consumption technologies, contributing to a lower operational cost and minimum environmental impact.
The tailored boiler island consists of a recovery boiler with a daily capacity of 6 300 tonnes dry solids (tDS) and a fluidized bed (FB) power boiler with 160 MW thermal capacity. Valmet also delivers the mill-wide NCG (non-condensable gases) collection and handling solution.
The recovery boiler features Valmet’s advanced high-power features, enabling maximum energy efficiency and high electricity production, and smelt spout cleaning robot for improved safety and operator friendliness.
The power boiler is tailored to burn local biomass, such as eucalyptus bark, sawdust, shavings, and residues as well as sludge. Both boilers are equipped with Valmet’s ESPs (electrostatic precipitators (ESPs) for dust removal from flue gases.