Waste is being transported from a self-discharging lorry to the rotary kiln with help of two conveyers. It is planned to get the necessary air from this system to reduce gas emission from the reloading system. Liquid waste is being delivered either from a storage container or directly from barrels with help of a pump. Waste is being atomised into the rotary kiln through a special sprayer, using compressed air, thus ensuring immediate ignition.
The rotary kiln is designed with a capacity 300 kg/h. Hazardous waste is being kept in the rotary kiln for 100 minutes. The main air stream is being delivered together with the solid waste flow, and additional air is being deliver into the final sector of the kiln. The engineered temperature of the rotary kiln is 950°C. The slag collection system is composed of a container, filled with water, and a conveyer, where the slag is being dried and conveyed.
The maximum temperature of the secondary combustion chamber is 1200°C. The storage time of gases in the secondary combustion chamber is 2 seconds.
Emergency gas discharge is connected with the secondary combustion chamber and opens automatically to discharge ignition gases in case of an emergency halt. After the secondary combustion chamber gases are being conveyed to the cooling tower where they are being cooled down from 1100°C to 600°C. The cooling water is being atomised through the sprays so that it evaporates completely and does not form drops on the walls. Then the fume gases are being conveyed to the heat converter, where they are again being cooled down from 600°C to 180°C. The heat converter ensures the 130°C temperature of hot water. Thermal energy can be used in several ways, such as for heating.
The cleaning system of fume gases is in accordance with the requirements of the EU directive 94/67/EC "On the Incineration of Hazardous Waste". Taking into account the fact that there are not determined emission limits of NOX, the system is not equipped with special equipment for the eduction of nitric oxides, but nevertheless NOX from exhaust fumes is being partly cleaned in the cleaning system of fume gases. The incineration facility is equipped with a 15 m high steel flue, where there is going on a continuous emission control.