Once the tires have passed the storage and separating line, control station and weighing system, steeply inclined conveyors transport them from ground level to the defined inlet height at the preheater. The capacity and size of the incline conveyor are specifically designed in accordance with each particular project. The whole tires can be fed through a swivel valve or triple flap. The upper and central steps open and close in order to protect the pyroprocess against heat loss and unwanted air entry. The lower step acts as a shutoff device for malfunctions. The metallic parts are protected by a highly heat-resistant coating.
A continuously running kiln process is necessary, which requires a continuous feeding of scrap tires as well as tire chips. An automatic handling system is recommended, due to the large quantities to be burnt without peak load. The electrical control is equipped with a PLC. All storage and supply functions are controlled by means of photocells and sensors insensitive to dirt, dust and temperature. The drives are furnished with inspection switches so that in case of disturbances a single segment can be handled manually. The control cabinet is weatherproof and air conditioned and any errors are indicated at the control room for troubleshooting.
Chipped tires as tire derived fuel (tdf)
Our system technology is flexible and also designed for conveying and feeding TDF for a continuous and smooth kiln operation. TDF can constantly be fed on the same path as RDF and biomass, when the longer retention time of tire chips is taken into account for proper coprocessing. All modules and system components, as well as each entire project, are planned individually according to the specific process requirements.