Energy saving RecuDry® belt dryer for the production of wood pellets

Ziegler Group, Pressath/Germany

Sector:Pellet industry
Challenge: This project is a greenfield initiative focusing on the construction of an environmentally sustainable and economically viable wood pellet production plant for the Ziegler Group. The plant aimed to maximize production efficiency while minimizing energy consumption.
Solution: The BTU RecuDry® system was implemented to meet the challenges of drying and energy efficiency while complying with strict environmental standards. This dynamically adapts the heat utilization to fluctuating ambient temperatures in summer/winter and slightly changing product supply.
Dryer used: Belt dryer type BTU RecuDry®
Product to be dried: Sawdust, sawmill residues
 

Challenge

Maximizing efficiency and energy savings: Drying of sawmill residue at the Pressath plant

At the Pressath plant, the main task was to dry sawmill residue from an initial moisture content of 40% to the targeted 10%, processing an annual tonnage of more than 650,000 pounds (approx. 300,000 mt). The plant aimed to maximize production efficiency while minimizing energy consumption, using a hot water boiler operating at a temperature of 130°C/90°C with waste fuel. This process was restricted by strict environmental permits, which are based on the highest European and national standards. The aim was to achieve the highest efficiency with the lowest operating expenditure (OPEX), in strict compliance with the European Best Available Technique and the German Technical Instructions on Air Quality Control.

 

Solution

STELA's BTU RecuDry® system was implemented to meet the challenges of drying and energy efficiency while complying with strict environmental standards. This system is known for its exceptional efficiency and flexibility. It dynamically adjusts heat utilization to fluctuating ambient temperatures and product feed rates. It is designed to effectively regulate heat demand between winter and summer, ensuring consistent drying quality all year round.
 

“The RecuDry® belt dryer proves itself in practice”

Interview with Andreas Sandner, CFO of the Ziegler Group: 

“We have a several connections with stela. On the one hand, there is the focus on sustainability, but also the company management, which is owner-managed at stela, as it is at our company. And, of course, the Bavarian location, which should not be forgotten.
We have a RecuDry belt dryer from stela in use here, which we use for pellet production. We naturally looked at various suppliers. With stela, we were impressed by the technology right from the start, but also by the entire process: the promises that were made were kept, which is very important to us as we are looking for reliable partners. And the RecuDry® belt dryer has now also proven itself in practice.”

Downloads

Find out more about the patented RecuDry® heat recovery system or other projects: 
 

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Low temperature, continuous dryer, circulating dryer – not sure what’s the best choice for you? Our experienced colleagues will be happy to help you find the best solution for your product. Please feel free to contact us without obligation.

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