Auxiliary equipment

Low-NOx burners

Combustion systems in general

We deliver complete combustion systems for multiple fuel types. The overall systems will typically consist of silos and feeders and of course mills, PF-piping and burners. Design and choice of feeders and mills will be based on fuel characteristics and our specifications and will typically be selected from the topend suppliers within this field. We design according to your specifications typically EN or NFPA requirements and capacity rang of 15-90 MWt per burner.

Our low-NOx burners advantages 

Our burners enable excellent reliability due to proven design and high material grades. Due to advanced air-split and swirl control, the primary emission performance will meet expectations and at the same time enable good load range performance.

The low-NOx burners can be designed as multi-fuel burners with the following fuels:

  • wood dust
  • peat dust
  • coal
  • HFO/LFO
  • gas
  • low calorific value - gas
  • alternative fuels

The burner design covers multiple variants. We design for existing plants or to new plant specifications with a windbox or single duct design. For larger new plants, we normally use T-firing or FW-firing. For special layouts, we also use opposed firing. In some situations, individual arrangements can be relevant such as floor-mounted burners for a compact footprint.

Example: layout of hammer mill tower for wood pellets


We design hammer mill towers with advanced layouts. We optimise features for key evaluation points related to costs, footprint, personnel and machine protection. Operational reliability is built into the design and can be proven by the choice of capacity, actual test runs and a smart layout. The layout successfully combines all these basic requirements and also leaves room for optimised service and maintenance.

 

Example: hammer mill tower equipment


The capacity of the hammer mills and the size of the intermediate silo are important for optimising the layout. The hammer mill system will include a feeder arrangement and a cyclone bag filter system. As previously noted, at the outlet of the cyclone bag filter, a rotary airlock feeder connected to a blower and the PF-piping requires a smart layout for earlier mentioned reasons and of cause for the sake of the process.

Example: sub-systems for fossil fuels


For new plants or retrofits, we design and specify all the traditional equipment groups needed for stable and safe operation. In addition to coal feeders, coal mills and PF-piping, we design and specify gas trains and oil stations as skid-mounted, preassembled and tested units from high-end suppliers.