1. The necessity of waste tire disposal
With the vigorous development of the automotive industry, the number of waste tires is increasing. As a kind of solid waste, waste tires will cause many serious problems if they are not disposed of properly. On the one hand, it will take up a lot of valuable land resources, making the already tight land use situation even more severe. A large number of waste tires are piled up at random, which not only affects the aesthetics of the city, but also may become a breeding ground for mosquitoes and create conditions for the spread of diseases. On the other hand, waste tires also have the hidden danger of fire caused by spontaneous combustion, once a fire occurs, it will cause serious pollution to the air and endanger people's health and ecological environment. In addition, the improper disposal of waste tires also causes a great waste of resources. Therefore, the resource utilization of waste tires has become an important problem to be solved, which not only helps the effective use of resources, realizes the recovery and reuse of resources, reduces the demand for new raw materials, reduces energy consumption and environmental pollution in the mining and production process, but also has great significance for environmental protection.
Second, waste tire treatment process
The waste tire treatment process mainly treats waste tires through mechanical means. It first shreds the waste tires and turns the tires into fragments of various specifications for further processing. After that, the grinding equipment is used to further refine the crushed waste tires into particles or powders, so that the processed products can be used in rubber products, fillers and other fields. For example, in the production of rubber runways and rubber floor tiles, rubber particles obtained by physical treatment can be used. The physical method is widely used in the treatment of waste tires because it is relatively simple, low cost, and does not produce too much environmental pollution.
3. Common waste tire disposal methods
Refurbishment and reuse
For tires with a light degree of wear, they can be retread after professional treatment and rigorous testing. Retreading methods include topping or full retreading of waste tires through machines to restore tires to a usable state. Retreaded tires continue to function, extending the life of the tires and reducing the need to produce new tires. This not only saves costs for enterprises and consumers, but also reduces the consumption of resources and the pressure on the environment to a certain extent. For example, in some occasions where the performance requirements of tires are not particularly high, retreaded tires can fully meet the needs of use.
Heat recovery
Waste tires are used as fuel in places such as thermal power plants, and heat energy is generated through combustion, which is used to generate electricity or heat. This method realizes the energy utilization of waste tires and contributes to the energy supply. However, during use, special attention needs to be paid to controlling the emission of pollutants during combustion. Because some harmful gases and substances may be produced when waste tires are burned, if not effectively controlled, they will cause secondary pollution to the environment. Therefore, when carrying out heat energy recovery, it is necessary to be equipped with advanced pollution treatment equipment to ensure that the combustion process meets environmental protection requirements.
Manufacture of rubber granules
Through mechanical grinding and other processes, waste tires are processed into rubber pellets. These rubber particles have a wide range of uses and can be used to produce products such as rubber runways, rubber floor tiles, etc. Rubber runway has good elasticity and anti-slip performance, and is widely used in schools, stadiums and other places; Rubber floor tiles have the characteristics of wear-resistant, anti-slip, shock-absorbing, etc., and are suitable for shopping malls, hospitals and other public places. The use of waste tires to make rubber particles not only realizes the reuse of resources, but also produces products with practical value and promotes the development of related industries.
Cracking refining
Pyrolysis technology is used to decompose waste tires into useful substances such as fuel oil, carbon black, and steel wire. Among the main products of waste tires after pyrolysis treatment, the flammable gases are mainly hydrogen, methane, etc., and this gas mixture is a good fuel; Fuel oil, including tar and polymer hydrocarbon oil, are also valuable products; The solid product is mainly carbon black, which has a low sulfur content and can be used in a variety of fields, and steel wire can be recycled as a steel material. This treatment method makes the resource utilization rate of waste tires reach 100%, and the pyrolysis rate is greater than 99%, realizing the efficient resource utilization of waste tires.
