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The detailed introduction of the principle of waste tire cracking oil refining process

A cracked tire can recover about 45 percent of primary oil, 35 percent of carbon black, and 12 percent of steel wire and 8 percent of it becomes combustible (recycling), "Eating dry squeezed net" of waste tires, and turning "black pollution" into "black gold". At the same time, the factory adopts Shuangxing's independent research and development, domestic advanced dust and odor removal equipment, and performs harmless treatment of harmful substances to solve the problem of secondary pollution caused by waste rubber.

　　With the increasing pollution caused by human production and life to the environment, the recycling and recycling of waste tires have received more and more attention. Generally, the treatment methods of waste tires are: tire retreading, prototype utilization, making rubber powder, manufacturing recycled rubber, and tire cracking. Foreign countries also burn and incinerate to recover heat, but they are rarely used as fuel in China. In recent years, domestic tire cracking has attracted much attention. It is known as a new and environmentally friendly way of recycling used tires. Tire cracking projects have also sprung up all over the country.

The core technology of cracking and refining waste tires

The core technology of waste tire cracking and oil refining is the thermal cracking treatment process of waste tires. This process does not require the addition of catalytic benefits. The principle of the pyrolysis process is as follows: tires are mainly composed of rubber (including natural rubber, synthetic rubber), carbon black, and various organic, Inorganic additives (including plasticizers, antioxidants, sulfur and zinc oxide, etc.).

The thermal cracking of waste tires refers to the breaking of polymers with unsaturated bonds in the main chain of rubber under anaerobic or anoxic conditions and appropriate temperatures. The products are mainly monomers, dimers and fragments. The process of polymerizing into a variety of olefins to remove volatile substances and form solid carbon. Its products are mainly fuel oil, pyrolysis gas, crude carbon black, and steel wire.

The essence of pyrolysis is to heat the organic macromolecules to crack them into small molecules to precipitate. In this process, the reactions carried out in different temperature ranges are different, the product composition is also different, the organic composition is different, and the starting temperature of the entire pyrolysis process is also different. As a result, the pyrolysis process is complicated and the temperature control is strict.

　　Waste tire cracking oil refining project adopts non-stripping, low-temperature micro-negative pressure cracking process technology to process waste tires to produce four products: fuel oil, crude carbon black, steel wire and cracking non-condensable gas. Fuel oil, steel wire, and crude carbon black are no longer processed and are directly sold to downstream companies for use as products. The cracked non-condensable gas is purified and desulfurized and then recovered and burned for the heat of the cracking reactor.

　　Yuxi waste tyre recycling machine consists of wire drawing machine, waste tire shredder, roller screen, magnetic separator, intelligent monitoring, and intelligent dust reduction system.

　　Waste tires are first pulled out of the tire inner wire by the tire wire drawing machine so that it can be shredded in the next process. Separating the steel wire from the rubber can protect the cutter of the tire shredder, extend the service life of the cutter, and improve the working efficiency of the shredder.

　　 Yuxi tire shredder is a crushing device specially designed for tires with large volume, thickness, and hardness. It can effectively shred rubber tires. The vibrating screen is combined with the tire shredder to screen the shredded materials for size, and the larger size rubber pieces will be transported into the tire shredder again for secondary crushing processing. The unique shape design not only saves the space occupied by the production line but also greatly improves the production efficiency and saves labor. The waste tires are broken and cracked in an orderly manner, and the rubber block passes through a magnetic separator to separate the steel wire from the rubber.

　　 Yuxi waste tyre recycling line is equipped with GI intelligent monitoring system, which automatically detects the running status of the equipment throughout the process. Once the equipment fails, it will be alerted and warned in time to solve the problem in time. In addition, the intelligent dust reduction system belongs to the supporting equipment in the complete production line of tire recycling equipment, which is automatically adjusted according to the air density to improve the workshop production environment.