Sawmills and wood industry: 2 - 35 MW

The high demands of the sawmill and wood industry make it particularly important that the equipment is designed to withstand the toughest environments.

Solutions for sawmills and the wood industry

Within the category, our customers are mainly sawmills, which have access to raw material and see an opportunity to use this to produce heat, and industrial customers who need heat to run drying plants.

Our systems are robustly built to always have high availability with only planned stops for service and maintenance. In particular, we have focused on developing fuel management systems to cope with the most extreme fuel qualities that can be found in this sector, all to eliminate unplanned plant shutdowns.

Drying facilities

For more than 25 years, we have supplied kilns for drying systems where our customers dry everything from sawdust for pellet production, to grass that is dried, pelletized and used during the winter as animal feed.

Our drying plants are designed to either supply the drying systems with hot raw gases between 300-500 C° or to steam systems supplying energy to belt dryers or converted rotary dryers. In this case, there are high demands that the final dried product has an evenly dried quality before it is pelletized, for example.

Our combustion system is part of the same series as the other energy systems, but in these applications there are slightly different requirements for temperature control of the hot gases. This means that our control systems play an important role in the design of a drying plant.

Product specifications

Type of installation : Hot water
Plant size: 2 - 35 MW
Fuels: Chips, GROT, bark, etc.
Fuel moisture content: 35 - 60%.

Hot water boiler

The boiler is a three-stage boiler with vertical flue gas tubes designed to be docked to our biofuel incinerator. The boiler is manufactured according to the latest technical requirements and undergoes extensive testing before being put into operation. It is characterized by a robust construction that provides a long service life.

Incinerator for biofuels

Jernforsen's incinerator for moist fuels is a very well-proven and robust solution for combustion of moist biofuels, such as bark, sawdust, forest chips and grot.

The furnace is made of a steel structure with a refractory lining, insulating material and covered with corrugated sheet metal. Inside, there is a movable and a fixed grid structure. The grate ladder is controlled by a forward motion that moves the fuel forward, after which it is burned.

At the end of the process, the ash is finally burned before being transported to the ash container. During the roasting process, we also add air, primary and secondary, to optimize combustion before entering the pressure vessel. The hot gas is now ready to be converted into the energy appropriate to the process.

The furnace is air-cooled and is cooled through an air jacket by the primary fan that preheats the combustion air.

Automated ease of use

The plants are manufactured using the latest technology with fully automated combustion systems, automatic ash discharge and modern PLC control systems.

You choose the cooperation

Whether you choose a machine or turnkey contract from us, we offer a quality-assured workflow, well tested over decades.

Automatic ash disposal

The oven is equipped with fully automatic ash discharge both under and in front of the grate. The ash discharge is sealed for a good working environment.

Automatic chimney sweeping

Jernforsen's boilers use compressed air sweeping - sweeping using compressed air. The boiler sweeping system is designed to increase the time between each regular sweep.

Control and operator systems

From only doing control for our own boilers, we now undertake to do complete control of entire heating plants and boiler centers. We can also offer consultative assistance in designing system layouts for both hot water and steam.

The operator interface today usually consists of an operator's computer. For the smaller facility, an operator panel may be an option instead of an operator computer.

Rules and regulations are adapted to the delivery and customer requirements. Thanks to our own control staff, we can always optimize our system. Today, we have the possibility to remotely control the whole plant.

High security, good availability and a user-friendly interface for the operational staff is something we continuously strive for. Jernforsen holds a certificate for self-monitoring of safety circuits for our boilers, according to European PED module B+D.

Want to know more about your options?

Our qualified staff are ready to advise and guide you to the best energy solution, based on your unique needs.


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