The Dryer Emission Control System cleans dryer exhaust gases using an inline scrubber in compliance with local environmental standards. The main components are the unique inline scrubber and water treatment and distribution systems. The inline scrubber efficiently separates dust particles from the gas stream. Optional auxiliary equipment captures water-soluble VOCs, notably formaldehyde. The Dryer Emission Control System is applicable for horizontal and vertical operation and costs less than an electrostatic filter. It also impresses with its low freshwater demand, reliable design for high uptime and small space requirements.

The Press Emission Control System cleans exhaust gases from the press through a washing process. Dust and condensable fractions of exhaust gases are bound to fine water droplets. These solid and liquid parts are separated in the inline scrubber. Pre-Absorber units can be supplied to reduce VOC emissions (volatile organic compounds), particularly formaldehyde. As a fluid-optimized system, the Press Emission Control System is highly energy-efficient. Like the Dryer Emission Control System, it is characterized by low freshwater demand and small space requirements.

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FLETCHER ORDERS FINE OSB PLANT

DIEFFENBACHER NAMES NEW ENERGY UNIT DIRECTOR

New Zealand’s Fletcher Building Ltd. has ordered a complete plant for the production of Fine OSB from German machine manufacturer Dieffenbacher. The plant will be built at Fletcher Building’s Laminex site in Taupo, in the center of the country’s North Island. The new plant will include Dieffenbacher new belt dryer.

The belt dryer is one example of how Dieffenbacher technology will support the sustainability of the new plant. Along with digitalization, advanced plant engineering and operational excellence, sustainability is one of the four pillars of Dieffenbacher smart plant concept, CEBRO. The belt dryer has a low thermal energy consumption.

Fletcher Building’s new CEBRO plant will have the flexibility to produce fine OSB and conventional OSB. Fine OSB is a special type of board consisting of an OSB core layer covered top and bottom by layers of particleboard. It combines OSB’s excellent mechanical properties with the surface quality of particleboard.

Besides the new belt dryer, Dieffenbacher will supply an energy plant, a debarking line, purchased material infeed, strand production, a Maier impact mill, the screening and air grading, material recovery, glue preparation, glue dosing and gluing systems, the forming station and forming line, a CPS+ continuous press with press emission control system, raw board handling, pneumatic systems, electrics and automation, the digitalization solution EVORIS and the digital service platform MyDIEFFENBACHER. Dieffenbacher subsidiary B. Maier Zerkleinerungstechnik is responsible for engineering the entire wood yard up to the strander.

The new plant will replace a particleboard production line featuring an almost 50-year-old single-opening press supplied by Dieffenbacher to Fletcher Building in 1974. “It’s remarkable that our old press served us so well and for so long. With the right maintenance, we believe our new Dieffenbacher plant will last at least as long,” says Paul Thorn, Fletcher Wood Products Capital Works Manager.

Construction in Taupo will begin in early 2024. Startup is scheduled for the fourth quarter of the same year, with full-scale production by mid-2025.

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DIEFFENBACHER NAMES NEW ENERGY UNIT DIRECTOR

“Superior fiber properties are crucial to manufacture technically advanced medium density fiberboard products. We are convinced that the well-proven refining technology from Andritz will meet our expectations and look forward to a successful partnership,” says Jim Salchenberg, Director of Engineering and Construction, Roseburg.