Lakan Betoni Oy, Finland
Taking a leap forward by renewing heating technology
Lakan Betoni is a Finnish family owned business founded in 1965. In five plants Lakan Betoni produces concrete products like pavers, precast concrete as well as ready-mixed concrete under its trademark Lakka®. The operation has its headquarters in the Eastern Finland’s town of Joensuu where Lakan Betoni had a outdated heating system working with two steam boilers.
The plant was constantly struggling with moisture issues and lack of efficiency putting their energy expenses way to high. Ultimately Lakan Betoni was looking for a new, more environmentally friendly solution to handle all their heating needs.
It is always a challenge to replace and implement new technology and equipment to an existing, operational plant. Especially in the case of Lakan Betoni this was clear from the very beginning as the sales process commenced. “My focus was to ensure that the customer is able to produce high quality concrete and cut emissions”, says Juha Eloranta Polarmatic’s Sales Manager. The customer was asking for aggregate and water heating for three different plants plus heating of the facilities’ buildings.
To tackle all the requirements Polarmatic proposed its TURBOMATIC Thermal Energy Unit as a MAX version which is capable of handling aggregate and water heating needs independently. Furthermore, the unit provides heat heating of the plant as well as curing process for beds. The containerized system has only one single propane fired burner with a total capacity of 1,250 kW [4.3 MBTU/h] which is designed for and capable of the following:
- Aggregate heating in 3 bin clusters with 20 compartments in total plus aggregate weigher and loading hopper
- Heating of batch water for 6 water weighers and truck mixer wash out
- Providing heat for heating of the plant
- Future expansion for concrete curing for precast beds
Compared to competitive systems, several individual units would be needed running simultaneously to achieve the same result but with the technical solution Polarmatic provided highly efficient heating achieve 60% savings in operation costs and assure a constant product quality under any conditions.
With this investment we expect to cut our heating costs by 50% and our carbon emissions by 60%.
The maxTURBOMATIC heating system has two separate tanks built into a 40 ft container which allows to heat water and aggregates individually. This setup allows flexibility in the heating process and allows the customer to react to changes in the production quickly.
Although there are two different heating modes the system only uses one burner to operate. Likewise, are all components like pumps and heat exchangers built into the same container.
REDUCING THE ENVIRONMENTAL IMPACT
For Lakan Betoni it was important not only to renew their heating system but also reduce the plants environmental impact tremendously. One reason to choose the TURBOMATIC system was its unique working principle where all energy input is used and recovered in the concrete ingredients and thus in the concrete itself giving the operation a leap forward in energy efficiency.
The unit is propane fired which makes it even more efficient than the old oil fired boilers producing 14% less CO2 emissions than heating oil. Not to mention that the burning process is very clean, and no particles are emitted to the environment as with the oil burners. Polarmatic is committed to help their customers to cut their emissions and thus ensure a sustainable operation for the years to come.
- Model PME-MAX 1250 G
- Structure 40 ft container
- Capacity 1250 kW
- Heat exchangers 600 & 150 kW
- Dosing water pumps 2 pcs
- Start-up 10/2018
- Project turn-key
- Increased annual concrete production due to superior heating power
- Significant savings in fuel consumption and emission cuts
- Production of high-quality concrete with optimum water-to-cement ratio and temperature at required capacity and at all ambient
- Lowest possible maintenance costs - designed and built for demanding conditions