PETKUS goes Green – focusing on the future


The PETKUS-engineers have developed the first “green” continuous flow dryer that can be operated entirely without fossil fuels. The initial move for this purpose was made by the Czech partner Bednar FMT s.r.o.. This led to an ecologic progressive cooperation.

The engineers of the traditional Thuringian company PETKUS Technologie GmbH have developed the first dryer that can be operated entirely without fossil fuels. The initial move for this purpose was made by the Czech partner Bednar FMT s.r.o.. This led to an ecologic progressive cooperation.

PETKUS continuous flow dryers – among others – guarantee the following quality features: They are suitable for universal applications such as seed and commodity products plus the customer can choose from a wide choice of energy sources for burning, including heating oil, liquid and natural gases.

The last feature led to the starting point establishing such an exceptional design. A customer and owner of a biogas plant requested a dryer whose heating system should be operated by hot water from his biogas plant. Since hot water is a by-product of such a plant the customer wanted to use it and have it transferred into something useful plus saving costs for not using fossil fuels.

PEKTUS engineers in cooperation with Bednar FMT engineers created a continuous flow dryer on the basis of a car radiator only that the air is not cooled down but heated up and blown directly into the sections of the dryer house. In the new PETKUS dryer the external air is sucked through the hot water register that has a capacity of 800 kW basic heating. There ist is heated up to 90°C. This is the maximum and constant temperature that can be reached with this technique. Whereas rape seed and most other seeds dry at a heating temperature of 70 – 80°C – this does not apply to wheat and corn/maize. Here you need a temperature of either 95°C or 130°C. In order to reach this level of heat an extra infinitely variable electrical heating exchanger with a heating capacity of additional 500 kW needs to be installed. 

In this way an optimal temperature can be reached in 10x50kW steps. The heating process is controlled by PLC system to get the right heating temperature. Keeping this in mind the capacity of this progressive dryer is: nominal 220 t per day (in wheat drying from 19% to 15% moisture).

This continuous flow dryer is a roof duct dryer made of a stable, galvanized steel plate construction for the most-efficient operation. The kernels will be dried effectively, gentle and economically. Due to the current overproduction of electricity in Czech Republic, the government supports financially each kWh which is not fed back in the energy grid. With the investment in the new PETKUS continuous flow dryer the customer has two clear advantages: economically and ecologically. These benefits plus the user friendly characteristics do not only meet the present requirements, but also those of the future.

On June 6, 2014 the new plant has been officially put into operation. About 250 guests were invited and followed the opening ceremony. Besides the official part with its speeches, interested guests could take part in a site tour through the new plant. Once again PETKUS proofed its innovative character and its quality label “Made in Germany”. For discerning customers looking for trustworthy, innovative products and competence PETKUS is their first choice. The company does everything that this remains like this in the future.

To satisfy the customers its strategy bases on four pillars – the so called “PETKUS TIES”. “T” stands for the high standard “Technology”. “I” is for “Innovation” – the engineers research and develop new technologies for the benefit of the customers. “E” as in “Engineering” implies the competence in designing turnkey projects. And finally “S” is dedicated to the “Service” PETKUS offers for its customers – with the subsidiaries all over the world PETKUS is always close to the customer.