From Scrap Tires to Fuel: The "Black Gold" Transformation Pathway Driven by Pyrolysis Technology

Scrap tires, known as "black pollution," are difficult to decompose and continuously release microplastics and harmful chemicals that pose long-term threats to the ecological environment, making scrap tire treatment a longstanding environmental challenge. However, amid the wave of the circular economy and the "dual-carbon" goals, the scrap tire resource utilization system centered on pyrolysis technology is transforming these troublesome wastes into valuable fuels and industrial raw materials, creating a green transformation pathway from "black pollution" to "black gold."  

I. Pyrolysis Equipment: The Core Engine for Converting Scrap Tires into Fuel  

Scrap tire pyrolysis is a process that converts tires through heating in an oxygen-free or oxygen-deficient environment, ultimately producing high-value products such as tire recovered oil, recovered carbon black, and steel wire via the pyrolysis system.  

The advent of continuous pyrolysis systems marks the true entry of this technology into large-scale industrial application. Taking Niutech, an industry leader, as an example, its self-developed "Industrial Continuous Scrap Tire Pyrolysis Production Line" employs an advanced intelligent control system to monitor and adjust nearly 20,000 technical parameters in real time, ensuring long-term, stable, and continuous operation at a processing scale of tens of thousands of tons.  

II. Tire Recovered Oil: From Tires to Fuel  

Tire pyrolysis oil, as the core product of pyrolysis recovery, is the primary economic driver of commercial operations. Its calorific value of approximately 40–44 MJ/kg is comparable to that of conventional diesel, making it a viable alternative for cement kilns, marine engines, and power generation applications.  

1. Direct Use as Industrial Fuel: Recovered oil can directly replace heavy oil in industrial burners and boilers, and is widely used in steel plants, cement plants, glass factories, ceramic factories, power plants, and steel mills. In cement production, it can replace traditional fuels to provide heat for cement kilns, reducing production costs. In steel smelting, high-temperature recovered oil can supply ample heat for furnaces.  

2. Refining into Gasoline and Diesel: Through distillation in refining units, recovered oil can be separated into light oil fractions, diesel fractions, and heavy oil. Further processes, such as distillation and hydrogenation, allow the separation of different fractions to produce gasoline and diesel products.  

3. As a Chemical Feedstock: Recovered oil contains various organic compounds—such as benzene, toluene, xylene, and other aromatic substances—that are important chemical raw materials. In the chemical industry, it can be used to produce synthetic materials such as plastics, rubber, and fibers. Of particular note, tire recovered oil also serves as a high-quality chemical feedstock for carbon black production as a substitute for coal tar, and can be directly used as feedstock oil in carbon black plants, reducing dependence on traditional coal tar, lowering production costs, and promoting the carbon black industry's transition toward green raw materials.  

Niutech's self-operated project—the Shandong Scrap Tire Pyrolysis Resource Comprehensive Utilization Project—is a model of industrialized application of scrap tire pyrolysis technology. This demonstration project for an environmental technology enterprise covers the entire process from scrap tire collection and pyrolysis treatment to resource recycling and reuse. The recovered oil has obtained international certification, enabling direct access to international high-end markets and meeting downstream customers' urgent demand for bulk, stable supply of high-quality pyrolysis products.  

Through technological innovation, recovered carbon black is continuously being upgraded toward standardization and higher value, further addressing premium customers' requirements for product consistency, stability, and application performance.  

Niutech's technological value has not only been validated domestically but has also gained extensive recognition in global markets, with its products successfully exported to numerous countries and regions, including Germany, the United Kingdom, South Korea, Denmark, Brazil, Hungary, Turkey, Estonia, Iraq, India, and Thailand.  

In Brazil, Niutech's scrap tire pyrolysis project primarily processes passenger car and truck tires with an annual capacity of 30,000 tons; the project has been operating stably for many years, and its second phase is currently under construction. In Hungary, the scrap tire pyrolysis project has been recognized as an EU demonstration project, using pyrolysis to process collected scrap tires to produce carbon black and pyrolysis oil, achieving Tire-Derived Fuel (TDF) utilization.  

Guided by the "dual-carbon" goals, the scrap tire pyrolysis industry is poised to unleash even greater environmental and economic benefits on a global scale, making an indispensable contribution to building a green, low-carbon, circular economic system.