EcoEnergy

EcoEnergy uses incineration as waste treatment technology in order to recover energy from industrial and household waste. Incineration of waste materials converts the waste into incinerator bottom ash, flue gases, particulates, and heat, which can in turn be used to generate electric power. The flue gases are cleaned of pollutants before they are dispersed in the atmosphere.

In the figure below a typical design of a WTE plant is shown. The plant will be adapted to local conditions and will, in some points, differ from the design in the figure.

Trucks with waste will be unloaded into a waste bunker in a closed waste receiving building. The bunker will be designed for a waste storage of several days.

The waste in the bunker is fed to the boiler with a crane and a fuel feeder. The waste is combusted on a movable grate. At the combustion hot gases with a temperature of about 1 200oC will be formed and superheated steam will be produced from the heat in the gases.

The combustion gas will be kept at a temperature of minimum 850oC during 2 seconds in accordance with EU directive. The steam superheaters will be designed to withstand acid gases formed at the combustion. The steam is lead to a steam turbine where electricity to the electrical grid and heat to the district heat network is produced.

The combustion gases leaves the boiler at about 160oC and the gases are led to a flue gas cleaning equipment where dust, acid components, heavy metals, dioxins, etc are removed in accordance with EU directives.