Waste Rubber Pyrolysis Equipment Tire demand increased significantly year after year
Waste Tire Pyrolysis Production Carbon Black Chapter 1 Introduction 1 Introduction 1.1 Purpose and significance of research With the development of economy and the development of rubber products, the demand for tires of various types of motor vehicles and other means of transport has increased year by year. The world produces about 31 million tons of rubber products per year, of which about 50% is tires. The number of rubber products to increase the number of its waste more and more. Waste rubber products are waste plastics, the second largest scrap polymer materials, of which the largest number of waste tires, tire scrap rate as high as 55.4%. According to statistics, the world's tire waste about 1.5 billion a year total of about 9 million tons, there are 2.5 billion old waste tires untreated.
In China, with the rapid economic development and the general improvement of people's living standards, the car to a large number of people into the lives of the resulting number of waste tires increased year by year. Data show that in 2006 China's tire production reached 420 million, ranking first in the world, childhood production of waste tires are as many as 140 million, about 310 tons. The amount of such a huge waste tires is first of all an environmental problem, the amount of such a huge waste tires is first of all an environmental problem. Waste tires are insoluble or insoluble polymeric elastomeric materials with high elasticity and toughness and do not change within a range of 50 ° C to 150 ° C. Their macromolecules break down to the extent that plants do not affect soil growth For hundreds of years, it is difficult to natural degradation of nature in nature. At the same time as the tire wear and corrosion resistance improved, making the conventional treatment of solid waste disposal of waste tires are not applicable to the treatment of waste tires become a very stubborn solid waste one of the important components. The accumulation of a large number of waste tires take up valuable land resources, but also easy to breed mosquito bacteria, spread the disease, endanger the health of residents, and easily lead to fire, causing environmental pollution. At present the world is facing a huge resource crisis, and waste tires itself is a renewable resource. Recycling of used tires will not only relieve their pressure on the environment, reduce pollution, but also achieve resource recycling. Countries around the world, especially the developed countries, are committed to the recycling of used tires and have enacted relevant regulations. The EU has classified waste tires as a priority waste and has now banned the disposal of waste tire debris. As early as 1991, the United States passed legislation to promote the reuse of used tires, which stipulated that the government would subsidize US $ 2.5-4 per disposal of a waste tire. At present, the world's waste tire recycling rate is the highest in Finland, close to 100% (the entire EU close to 8096), the US waste tire recycling rate of more than 90%, Japan waste tire recycling rate of nearly 90%. Compared with the developed countries, China's waste tire resources are wasted, the recovery rate of waste tires is low, and the recovery technology is lagging behind. China's waste tire recovery rate in 2002 was only 47%. Especially in recent years around the rise of the use of waste tire soil refining, on the one hand this is already very scarce rubber resources in China is a devastating damage; the other hand, produce a lot of waste residue, emissions of a large number of S02 and other harmful gases , Causing serious environmental pollution. Therefore, the effective use of waste tires, making valuable rubber resources to re-use, to achieve energy conservation, improve the environment and reduce pollution purposes, is China's sustainable development and recycling economy an important way.