Introduction
The document provides an overview of the ANDRITZ Belt Dryer BDS, designed for drying biomass. It highlights the system's compliance with EC Machinery Directive 2006/42/EC and ATEX explosion protection directive 94/9EC, emphasizing its automation and minimal operator requirement.

Biomass as an Energy Source
Biomass, including bark, wood chips, and sawdust, requires drying to enhance its calorific value from 2 kWh/kg to approximately 4.5 kWh/kg. This process reduces transport and storage costs and optimizes conditions for pelletizing and direct firing, leading to lower fuel input and pollutant emissions.

Biomass as Basic Material
In the wood processing industry, biomass is used to produce panel-boards and blocks. The ANDRITZ biomass dryer ensures a consistent and low moisture content, meeting the high demands of this industry.

Process and Advantages
The ANDRITZ drying process uses convective drying, with options for open or closed air loops. It can utilize waste heat from combined heat and power cycles, enhancing energy efficiency. The system is designed for easy operation and maintenance, with features like automatic belt cleaning and guiding.

Mechanical Design and Safety
The dryer features a solid steel construction, easy-to-remove screw conveyors, and a frost-protected sawdust feed system. It includes a water-saving solution for belt cleaning and a long belt tensioning range. The design minimizes exhaust air volume and can operate in a circulating air version.

Technical Specifications
- Water evaporation: up to 25 tons per hour
- Capacity: approximately 45 tons of biomass with 50% dry solids per hour
- Belt width: up to 8 meters
- Active belt length: up to 50 meters

Conclusion
The ANDRITZ Belt Dryer BDS offers a comprehensive solution for biomass drying, integrating various stages from wet milling to pelleting, and providing energy-efficient and environmentally friendly operations.