Combustion furnaces

Combustion furnace suitable for all types of waste, such as clinical waste and contaminated materials

The heart of every plant is of course the combustion chamber, with its grate and combustion system philosophy.

All parameters of the combustible material must be considered, as well as the issue of sustainability in the handling of the waste.

Incinerators should have safe charging systems, in this case a two-chamber ceiling charging system consisting of a manual or automatic chamber opening and a powered slide or flap system to safely seal off the combustion chamber.

Two or more burner systems should be used to heat the system and support firing at low waste calorific values. In each case, one burner system for the main combustion chamber and one burner system for the afterburner chamber.

Burner test

Burner test


The combustion chamber temperature should be 850 - 950 °C in the main combustion chamber and 950 - 1150 °C in the afterburner chambers, and the combustion temperatures should be controlled automatically. An emergency system (pressure and temperature dependent) must be provided, depending on the size of the plant.


Combustion grate
ZANNI combustion grate suitable for solid types of waste, such as clinical waste and contaminated materials

Good ventilation of the main chamber is the basis for clean and complete combustion of waste on an incineration grate.


Example combustion grate

This new type of combustion grate is easy to maintain and inexpensive to manufacture and service.
Incineration grates are wearing parts. It is suitable for all types of waste, such as clinical waste, contaminated materials, other solid and sludge waste, such as sewage sludge.
In this system, mechanical components have been completely eliminated and replaced by combustion air.


Ventilation of the combustion chambers

Ventilation is provided by one or more combustion air blowers, the control of which is regulated by appropriate oxygen measurements to ensure sufficient oxygen enrichment and thus complete combustion.

The systems are usually provided with sight glasses in the combustion chamber, as well as numerous ports and connections for necessary and additional measuring devices.

Ash removal is usually performed either manually via ash removal doors or via automatic ash removal systems.


Exemplary system components of an combustion plant

- Combustion grates,

- Automatic control systems,

- Feeding systems,

- Ash removal systems,

- Side chamber doors,

- Inspection accesses,

- Liquid injection systems,

- Flue gas coolers,

- Boiler systems for heat recovery and energy recovery,

- Emergency and primary stacks,

- Dry and wet flue gas scrubbing systems,

- Flue gas filtration systems,

- Suction and fresh air blowers,

- Sensors and control systems,

- Conveyor belts,

- flue gas monitoring systems,

and other plant components, depending on the individual configuration of a plant.

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