Patented performance

Utilizing unique technology, our OT concentrator is designed to deliver performance without plugging. Thanks to the double pipe bundle, the same equipment can handle vapors of different pressures. The device is well suited for liquors containing high dry matter content and high viscosity.

OT concentrator

The OT-concentrator (Outside Tube Concentrator) meets several needs of the paper and pulp industry and the process industry at the same time. The device's excellent liquid distribution ability creates the conditions for an even better heat transfer ability.



Precipitation and crystal formation can be minimized by tilting the base tube plates. It is also possible to clean the heating surface from both sides. User-friendliness is increased by a separate maintenance space, which enables inspections, maintenance and repairs without dismantling the structures.


All OT concentrators we deliver are adapted to the needs of the customer. We are responsible for the design work of the devices and we manufacture them with reliable subcontractors. Although our core competencies are equipment and process design, if necessary, we can also take care of the project as a turnkey delivery.

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The benefits of OT concentrator at a glance

Non plugging construction

Enables the use of different pressurized steams

Built-in steam cooler

Easy to inspect, maintain and clean

Device pictures

OT-väkevöitin

From challenge to solution

Black liquor

Evaporators, condensers and concentrators for effective handling of black liquor.

BCTMP

Our evaporators make the BCTMP process smoother and more ecologically sustainable.

References & success stories

Implementations that have increased production efficiency in Finland and around the world.

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