Retort burner (definition)

Retort burner - this is a specialized type burners, used in solid fuel boilers, especially pellet and coal installations, for efficient and controlled combustion of solid fuel. It is a device that allows for the optimization of the combustion process by feeding fuel from below through a special nozzle called a retort.

Main features of the retort burner:

1. Principle of operation:
   • Fuel supply: Fuel such as pellets or coal is fed into the combustion zone from below, through a central nozzle (retort). This allows for uniform combustion and prevents fuel from sticking.
   • Primary and secondary air: The burner is equipped with a system of primary air supply from below, through the fuel, and secondary air supplied from above to ensure complete combustion. This ensures cleaner combustion with minimal emissions.
   • Intense burning: The retort burner provides a high level of combustion intensification, which results in a high temperature in the combustion zone and maximum thermal power.
2. Design features:
   • Materials: The burner is made of heat-resistant materials that can withstand high temperatures and the effects of an aggressive environment that occurs when burning solid fuel.
   • Ash removal system: Most retort burners are equipped with automatic ash removal mechanisms, which simplifies the operation and maintenance of the boiler.
   • Power modulation: Modern retort burners are often equipped with automatic power modulation systems, allowing the burner operation to be adapted to current heat requirements.
3. Advantages:
   • High efficiency: Due to its specific design and air supply, the retort burner ensures more complete combustion of the fuel and maximum use of its energy potential.
   • Environmental friendliness: By optimizing the combustion process, retort burners produce fewer harmful emissions such as CO and NOx, making them more environmentally friendly than other types of burners.
   • Reliability and durability: The burner has a simple and reliable design, which ensures its long-term operation with minimal maintenance.
4. Application:
   • Pellet boilers: Retort burners are widely used in pellet boilers where a high degree of automation and efficiency is required.
   • Coal boilers: Retort burners are also used in coal-fired boilers due to their ability to efficiently burn fine-grained coal.

Features of choosing a burner type:

The retort burner is an efficient and reliable solution for solid fuel heating systems. Its features, such as bottom fuel supply and a two-level air supply system, ensure high performance, economy and environmental friendliness. These burners are ideal for modern pellet and coal boilers, where automation of the process and stable operation with minimal maintenance are important.