Wellons Canada
  • Fixed-Grate Combustors

Wellons fixed grate combustor is a cost-effective solution for fuel with low moisture and low ash contents.

Single Cell Output From

2 MW (7 MMBTU/hr) to 23 MW (80 MMBTU/hr)

Multiple Cell Configurations

Up to 140 MW (480 MMBTU/hr)

Each system is custom designed for the specific requirements of the customer’s energy demand and fuel characteristics. Wellons offers a fully integrated system starting from fuel storage and handling through emission stack exhaust. Our service packages include civil, mechanical, and electrical installation.

Combustor Technology

Air Cooled Fixed-Grates

Combustor Technology

Water-Cooled Fixed-Grates

Combustor Technology

Air Cooled Fixed-Grates

For smaller systems, Wellons provides an air-cooled fixed grate in a refractory lined chamber. 

Each fixed grate combustor incorporates a fuel feed screw under the grate which creates a pile of fuel on the grate. 

Most dry fuels have low ash contents and convenient access doors are provided to manually remove any ash that accumulates in the combustion chamber.

Fixed Grate Furnace Illustration

Combustor Technology

Water-Cooled Fixed-Grates

For larger systems, Wellons provides a fixed grate proprietary Wellons Cell Furnace with a water-cooled floor. 

Depending upon the fuel characteristics, the water cooled fixed grate cell can incorporate either a fuel feed screw under the water cooled grate or a fuel feed chute above the grate.

In the fixed grate Wellons Cell Furnace, the combustion air enters the chamber through a series of tangential tuyere holes creating the desired mixing environment to complete the combustion process.

Fixed-Grate Cell Furnace Illustration Stoker
Fixed-Grate with Under-Grate Stoker
Fixed-Grate Cell Furnace Illustration
Fixed-Grate with Fuel Chute