STELA Laxhuber industrial drying systems and plants

We provide technical selection of STELA Laxhuber drying plants for timber, pellet production and agriculture.

BTU RecuDry belt dryers with heat recovery

The RecuDry system divides conventional drying into two zones, recovering latent heat to achieve energy saving of 35 – 55%, depending on the drying surface area used. An air-to-air heat exchanger transfers thermal energy to incoming fresh air, reducing emissions and operating costs.

Energy saving of 35 to 55 percent
Two-zone circulation and condensation design
Air-to-air heat recovery exchanger module
Low exhaust airflow volume and emission profile

Industrial belt dryers BT, BTL, BTS series

Belt dryer type BT Belt dryer type BTL Belt dryer type BTU Belt dryer type BTU RecuDry® Belt dryer type BTS Slat conveyor dryer type PBT Belt dryer type BTF-L Belt dryer type BTF-S Mobile belt dryer type BTLA represent the complete range of STELA industrial drying installations.

Series BT, BTL, BTU, BTS, PBT
Direct and indirect air heating
Perforated synthetic transport belts
Gentle low-temperature drying profile

Stationary AgroDry drying systems with Bi-turbo technology

The innovative air flow provided by Stela Bi-turbo technology reduces the amount of hot air required and therefore cuts the specific energy consumption in comparison to conventional systems with active heat recovery by up to 35%. Tower units operate from 60 cubic metres.

Bi-turbo energy-saving airflow scheme
Tower volume from 60 cubic metres
Indirect air heating efficiency above 91%
Automatic pulse probe moisture control

Mobile continuous dryers of the UNI series

Autonomous mobile dryers UNI 12, UNI 18 and UNI 30 provide flexible post-harvest grain conditioning for farming operations and regional elevators. Built on road transport chassis with integrated heaters and air blowers, they ensure continuous field operation.

Models UNI 12, UNI 18 and UNI 30
Throughput up to 11 t/h on wheat
Road transport heavy-duty mobile chassis
Integrated air heaters and exhaust blowers

STELA-Pneuma discharge plough and conveyor systems

Uniform product discharge over the entire dryer base area with STELA-Pneuma discharge plough ensures continuous material descent across the drying tower cross-section. Pneumatically actuated oscillating profiles meter granular layers gently.

Patented STELA-Pneuma discharge mechanism
Uniform descent across tower cross-section
Pneumatic oscillating drive control
Gentle handling of sensitive granules

STELA Steuerungstechnik switchboards and automation

STELA Steuerungstechnik GmbH & Co. KG provides broad portfolio of electrical engineering, automation technology, process visualisation, switchboard construction and electrical MSR installation from our own production. Integrated control systems feature Siemens PLC automation.

In-house switchboard manufacturing
Siemens S7 programmable automation
Process visualization and SCADA panels
Complete electrical MSR installation

Energy-efficient biomass drying with RecuDry heat recovery

BTU RecuDry belt dryers are engineered for continuous low-temperature preparation of wood chips and sawdust prior to pelletizing. The technology divides drying into a recu module and condensation module, yielding thermal energy savings between 35 and 55% depending on drying area.

In the recu loop, circulating air reaches optimum saturation before passing to condensation, where an air-to-air heat exchanger extracts latent vapor heat to preheat incoming fresh air.

Stationary AgroDry drying systems with Bi-turbo airflow

Dual independent airflow stages optimize heat transfer across drying columns. Indirect air heaters with thermal efficiency ratings above 91% eliminate contamination of grains, maize or oilseeds by combustion gases.

Mobile continuous dryers of the UNI agricultural series

Autonomous mobile drying units UNI 12, UNI 18 and UNI 30 provide flexible post-harvest grain conditioning for farming operations and regional elevators. The equipment is mounted on robust transport trailer running gear.

With throughput capacities reaching 11 t/h on wheat when reducing moisture from 19% to 15%, UNI dryers feature integrated heating blowers and compact modular packaging for rapid deployment.

Uniform material descent with STELA-Pneuma discharge plough

Even downward movement across the entire cross-section maintains consistent moisture levels between columns while preventing kernel damage.

Switchboards, automation and telemetry by STELA Steuerungstechnik

Built around industrial Siemens PLC platforms and touchscreen HMI panels, the automation system adjusts conveyor speed from pulse probe moisture measurements. Telemetric interfaces facilitate real-time monitoring.

Process parameter calculation for moisture and layer thickness

Optimal throughput of STELA drying plants depends on raw material physical properties including bulk density, initial moisture and granule size. Engineering calculations determine bed depth between 50 and 250 mm on the belt.

For wood chips and sawdust, heating fluid temperatures are maintained between 70 and 105 °C to prevent volatile resin release. Airflow velocity of 0.5 to 1.2 m/s through belt perforations guarantees uniform cross-flow through the bed.

Safety monitoring and automatic deluge suppression systems

When drying combustible organic materials such as sawdust, peat and agricultural residues, dedicated safety circuits safeguard continuous plant operation. STELA installations integrate high-speed optical infrared spark sensors.

Upon detecting hot particles, programmable automation triggers micro-mist water deluge nozzles to suppress ignition hazards. Drying chambers include explosion relief panels and airflow sensors.

Industrial reference at Johann Pabst Holzindustrie in Austria

The stela BTU RecuDry belt dryer has been in operation at Johann Pabst Holzindustrie in Zeltweg since the beginning of autumn. With an output capacity of 9 t/h, the unit expanded pelletizing operations with modular extension potential from 38 to 60 metres, increasing throughput to 15 t/h.

In addition to installing the belt dryer, the manufacturer was responsible for the entire automation and electrification of the pelletising process.

STELA Laxhuber and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of STELA Laxhuber and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.