Reliable Fuel Supply for Stable Combustion

Biomass fuels such as sawdust, wood chips, pellets, olive pits and pomace can vary widely in bulk density, moisture content, particle shape and flow behaviour. These variations make fuel handling a critical part of the combustion process, particularly where the burner or boiler operates under automatic load control. VOLDE develops biomass fuel feeding systems that connect storage, discharge, metering and burner supply within one coordinated process. The objective is to deliver the required fuel quantity at a controlled rate while maintaining a reliable material flow from the bunker to the combustion equipment.

| Gravimetric Feeding for Variable Biomass Fuels

Unlike uniform industrial powders or pellets, many biomass fuels show inconsistent flow characteristics. Fibrous structure, irregular particle size and changing moisture content can lead to bridging, tunnelling or unstable discharge inside bins and hoppers.

For this reason, the feeding system is selected around the actual fuel rather than a standard screw arrangement. Depending on the application, the system can incorporate.

• purpose-designed bunker geometries and mechanical discharge equipment
• heavy-duty single- or twin-screw feeders
• gravimetric weighing for measured fuel supply

Where the burner control system requires a defined fuel demand, gravimetric feeding allows the actual mass flow to be monitored and adjusted according to the combustion set point.

This creates a more predictable relationship between fuel demand and material supply, especially in applications where fuel properties can change during operation.

| Burner & Boiler Integration

The fuel-handling line is engineered as part of the combustion system, beginning at the main storage bunker and continuing through the metering section to the burner or boiler inlet.

During system design, VOLDE considers the required hourly fuel rate, fuel type, screw geometry, conveying inclination and the physical layout between storage and combustion equipment. Safety devices for isolation and backfire protection can also be incorporated where required by the application.

The automation system can link fuel-feed rate with burner load, while temperature and fire-detection signals are incorporated into the operating logic.

Typical functions may include:

• fuel-rate adjustment according to burner demand
• fire and temperature monitoring
• isolation and backfire-protection sequences

By coordinating mechanical feeding with burner control, the system supports a more stable combustion process and a more consistent thermal output.

| Biomass Burner Solid Fuel Feeding

VOLDE Biomass Fuel Feeding Systems combine storage engineering, mechanical discharge, gravimetric feeding and combustion-side automation to provide a robust fuel-supply solution for industrial boilers, hot-air generators and biomass energy plants.