Model of power plant with blue fuel feeding and ash handling equipment.

Fuel feeding and ash handling systems

Ust-Ilimsk, Russia



  • Year of delivery: 2020
  • Plant: 2 x 68 MWth Power boilers
  • Material: Wood chips, bark and sludge


  • Fuel feeding system
  • Ash handling
  • Sand re-circulation

Ust-Ilimsk overview

Two bark boilers (BB4 & BB5) in Ust-Ilimsk were modernized with new fuel feeding, ash handling and sand re-circulation systems to enhance green energy production.

The fuel feeding, ash handling and sand re-circulation equipment were delivered to the plant as part of a larger scope of complete modernization of existing two bark boilers, which produce 68MWth each. Our underlying task was to enable efficient and reliable fuel feeding to the boiler, extract and cool down the ash coming from the furnace, separate and recirculate the fine sand back to the furnace. The cramped space of the old plant made the project more challenging.

New bark boilers

From time to time, material handling equipment must be replaced with new ones. The lifecycle of the Ust-Ilimsk power plant came to its end and the end client decided to make a significant investment in modernizing the existing bark boilers BB4 and BB5.

Tailored solutions

The plant had limited space for the new equipment and therefore the solution had to be customized precisely for the plant. The combination of Laitex’s expertise and flexible attitude was key to meeting these challenges. Laitex delivered a solution that was tailored to a demanding project.

Related solutions

3d power plant with fly ash handling system

Fuel feeding

The fuel feeding system is a critical part of the whole process for boiler operation and energy production. With proper fuel feeding system plant operates functionally and efficiently.
3d model from bottom ash handling system.

Bottom Ash Handling & Sand Recycling

Bottom ash handling refers to the process of removing and processing ash, slag, sand, and non-combustible particles from the bottom of a boiler to containers or a bunker. Our well-planned solutions increase efficiency and production capabilities of the plant's operations.
Blue pneumatic conveyor to blue ash silo.

Fly Ash Handling

Fly ash is generated in fuel combustion process. It's important to collect and process so that it doesn’t enter in the atmosphere and nature. Laitex creates mechanical and pneumatic solutions for fly ash collection, conveying, handling, and storing.