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Automatic Gas Injectors

Automatic Gas InjectorClean Combustion's automatic gas injectors has been developed to provide reliability, versatility and efficiency.

Our automatic gas injectors are used in incinerators and gas burners, but they can also be used as a mixer and gas control unit before a multi-fuel burner. The automatic gas injector facilitates the alignment and operation of ejectors, which normally drive the combustion gases.

The gas injectors constantly measure the gas pressure, when a desired pressure is reached the injector automatically opens its valves and allows the gas to flow through into the combustion zone. The valves can be controlled automatically or manually from the control room, independent of the gas flow. Technically it gives the application a full Turn Down Ratio of 1:50.

Clean Combustion’s gas injector is controlled either by using steam or water pressure, which also functions as an additional back-fire barrier in the gas outlet. If the gas flow is low or has stopped the valves remain closed to prevent the occurrence of back-fire. Through the distributed control system the gas injectors work like an automatic gearbox: you just ask for power.

Unique Vortex Injector Design

Unique Vortex Injector DesignThe exclusive vortex injector designed by Clean Combustion reduces energy consumption and waste.

Liquid and slurry fuels entering the combustion chamber are atomized for efficient combustion. Clean Combustion uses a unique external mixing vortex injector which replaces the function of the nozzle. Each burner can be equipped with several injectors to simultaneously support different fuel types. The injector creates a vortex of the liquid/slurry fuel and applies the atomizing media to create a cone-shaped fuel mist directed into the combustion zone. The atomizing media is either pressurized air or steam.

The injectors are designed according to flow rate and fuel characteristics. Further improvements can be made by analyzing combustion data and tuning the injector with interchangeable parts. The tuning controls the scattering angles and the rotation of the fuel mist to ensure an efficient delivery to the combustion zone.

VortexMain Advantages of Clean Combustion’s vortex injector:

  • Reduced fuel pressure
  • Homogenous flame
  • Reduced energy consumption
  • Lowered emissions
  • Increased uptime, 12-24 months
  • Self cleaning design
  • Control of viscosity by regulating fuel temperature
  • Turn down ratio 1-6, 1-12


Adjustable swirl turbulators

Clean Combustion’s adjustable swirl turbulators promote efficient combustion.

The swirl turbulator is used to steer and shape the flame in the combustion zone. Air is injected into the channel leading to the swirl turbulator while a speed-controlled fan regulates the flow to keep a constant over-pressure.

The adjustable swirl turbulator controls rotation and stoichiometry of the air without losing pressure or speed. Clean Combustion’s design enables optimized combustion for a high variation of fuel flows. There is an additional cooling channel on the outside of the swirl turbulator to prevent the entire burner from over-heating

Swirl turbolator open 0%Swirl turbolator open 50%Swirl turbolator open 0%

Flexible fuel lances

Clean Combustion's flexible fuel lances can easily be customized to meet all requirements.

In the center of each Clean Combustion burner there is room for up to three fuel lances designed for liquid and slurry fuels. The lance, its connections and the vortex injector have different sizes depending on the characteristics and desired effects of the designated fuel. Clean Combustion’s flexible design allows the fuel lance to be independently pulled out while another is in operation.

Fuel lanceDiagram

With different sizes of fuel lances and vortex injectors our products cover a wide range of effect outputs.

Multi-fuel Burner Systems

Clean Combustion’s multi-fuel burners, ranging from 1-50MW, will highly improve efficiency, simplify maintenance and lower emissions.

The dynamic technology supports solid, slurry, fluid and gas fuels, at single or multi-fuel operations within the same system. Our burners provide improved energy extraction, resulting in lower emissions, better cost efficiency and higher up-time compared to previous generations.

The combination of the vortex injectors, dynamic gas registers and a adjustable swirl turbulator gives the operator total control of the layout and position of the flame at different fuel flows and speeds. This helps to optimize the process and ensures a complete combustion of the fuel entering the zone, reducing fuel consumption and undesired exhaust particles.

Clean Combustion’s manageable design focuses on daily operations. Functions are easily accessible, the design is self-cleaning, and maintenance is reduced and simplified.

The connections for fuels, air, atomization media and actuators are at the back of the burner. The actuators control the dynamic features of the burner. The fuel lances supply the fuel and atomization media to the vortex injector, which mixes the media in-air towards the combustion zone. Burners can be equipped with several gas channels. The gas is sent through the burner by a dynamic outlet channel towards the combustion zone. The adjustable area in the gas channel is automatically controlled by the optimal pressure of the gas entering the combustion zone.

Air is supplied through the swirl turbulator and mixed with the gas and the fuel before entering the combustion zone to ensure an optimized fuel/air ratio. This flexible Clean Combustion system provides high combustion rates even with variations of fuel and fuel quality, allowing the mixing of several fuels.


burner-tipMulti-fuel burner tip: Tips are equipped with lances in the center for liquid and slurry fuels. Channels for gas, solid fuels and air surround the center, which also houses the swirl turbulator.






Back of the burnerBack of the burner: Connections for different types of fuel, air and steam are at the back of the burner. The dynamic areas inside the burner are adjusted by automatic controlled actuators.


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