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System technology for scrap tires as alternative fuel

Scrap tires that cannot be recycled are best for co-processing: Natural rubber and textile carcass can be used as a fuel. We have many years of expertise and sophisticated technologies for feeding whole tires as well as chipped tires as tire derived fuel (TDF).

Whole or chipped tires

We have developed a special system technology for co-processing scrap tires, which covers the entire process from tire supply, separation, and discharging of improper tires to feeding the kiln. It ensures safe, controlled and automatic operation under the strain of daily operation.

The construction and function of the machine components are designed for all tires poured on a heap, which means that they can handle tires of different sizes, shapes, weights and amounts of impurities like dirt and water content. Damaged tires and tires with wheel rims are rejected by means of a control device automatically. During transport, the tires are turned to get rid of that dirt and water.

Features

From delivery to co-processing

After the scrap tires are unloaded, they are handled primarily by a wheel loader or gantry crane with a polygon gripper for storage and discharge. The size of the stock area has to be adapted to the kiln consumption and works as a compensation between discontinuous supply and continuous consumption. Official permission must be obtained for setting up and operating the storage as well as for building the tire handling system, and the corresponding local regulations regarding fire-fighting and water management should be followed.

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.

Customer Support for Power Plants

Competent engineering, fast and reliable on-site service as well as optimal spare parts supply round out our offering and ensure high reliability of the systems.

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Your Contact Person

Andrea Prevedello

Head of Sales CL Systems

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