Swirl combustion chamber (furnace) is designed for the effective combustion of liquid biofuels, mostly slurries (mixture of solids and liquids) which are produced from charcoal, bio-wastes, litter, etc. Instead of conserving them for future gasification we are providing solution for their direct burning in our combustion chamber.
Biofuels or raw-materilas for it are typically a liquid slurries with high moisture content, about 30…40%, and low calorific values – 15…18MJ/kg. Swirl chamber successfully burns this type of fuels!
Originally swirl chamber was developed to burn carbon slurry fuels (CWS) which is a low-carific value fuel. As carbon is banned for burning in many countries due to a potenrial of higher emissions we used our experience and extended an application of swirl pre-chamber to direct combustion of biofuels of different origins.
Swirl chamber has a spraying nozzle for the inserting the biofuel. Nozzle is specially designed to spray different types of slurries. Air slots in a prechamber’s body form a stable swirl (vortex) which makes combustion process stable and effective. Air which is blown into the slots forms a swirl (vortex) which looks like a small tornado – see video. Due to a ‘long way’ in vortex liquid fuels have enough time for ignition and full combustion. Even a lowcalorific slurry which is sprayed inside the chamber successfully burns.
- Swirl chamber is designed to burn liquid fuels, preferably slurries. Chamber is installed as a stand-alone furnace or in front of a boiler. Biofuel is sprayed into prechamber where it is preheated and burned. Combustion products (hot gases) further moved to a drying kiln or unto a boiler – depending on needs.
- Boiler which is equipped with a prechamber can burn both biofuels/slurries and other fuels: diesel of heavy fuel oil (depending on boiler type)
- There is a range of chambers produced between 0.8 and 11MW
- Connection to boiler or drying kiln is made individually.
Chamber consists of
- Chamber consists of door with a diesel/gas burner, prechamber body, blower, CWS-nozzle, control system.
- Front door has mounting holes for mounting mazut and/or diesel burner required for initial preheating. Additionally it has eye holes for visual control.
- Chamber body is a horizontal or vertical cylinder equipped with thermo-sensors, CWS nozzle, secondary air input and secondary air slots for creating a swirl. Body is isolated with fireclay bricks
- Blower creates a secondary air flow which makes a swirl inside a prechamber
- Control system makes possible to vary parameters of combustion depending on fuel characteristics
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