Säätötuli biomass fuel silos and fuel conveyors

With solid fuels, the fuel storage silo and its ability to transfer the fuel from the silo to the burner is of primarly importance. Säätötuli manufactures many different silo solutions in order to provide a good solution for every single project.

Säätötuli can provide the following equipments:
Säätötuli STRONG-series from 40kW (136,000 BTU/hr) up to 80kW (273,000 BTU/hr)
Säätötuli Hydrobar: a robust multi-fuel solution from 40 kW (136,000 BTU/hr) up to 500 kW (1,710,000 BTU/hr)
Industrial hydraulic-scraper silo-stations from 120kW (400,000 BTU/hr) and up

Säätötuli biomass conveying screws for lowly screened fuels

silo-screwSäätötuli started as an agriculture-industry oriented biomass boiler builder. Since the beginning, Säätötuli’s boilers have been challenged by “home-made” lowly screened biomass fuels that are difficult for any feeding mechanism to convey. Therefore, all the feeding screws in Säätötuli’s installations are strong and designed to be able to handle the most difficult of fuels. The silo screws, like on the picture above, are made with Säätötuli’s special design allowing stick-like material to be crushed while the screw turns, thus correcting most parts of low screening in fuels.


A specially designed counter-blade is installed at the entrance of the conveying tube in order to cut oversized materials before they enter the feeding screws. Strong screw conception and powerful screw motors ensure that even big chunks of wood are cut and do not block the feeding system.

Säätötuli can manufacture screws of different sizes and combine many srews, including upward-going screws and drops in order to fit exactly between the fuel silo and the biomass boiler at any site.

What do you need for a biomass heating system?


Principal elements of a Säätötuli hot water biomass heating system:
1 – Fuel silo (like the Säätötuli Hydrobar on this picture)
2 – Fuel conveying system including safety features
3 – Säätötuli burner
4 – Säätötuli boiler

In addition, you have to add:
– Chimney (possibly with smoke extractor)
– Automation
– Optional ash conveying system
– Optional flue gas cleaning system

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