1. The basic status of tire renovation industry
With the rapid development of automobile industry and mining machinery, China has become the largest consumer of rubber in the world for seven consecutive years. According to the world rubber research organization, China's rubber consumption in 2008 was 599.5 million tons, accounting for 27 percent of the world's total consumption. At the same time, China is a country with a shortage of rubber resources. More than 70% of the natural rubber in China and more than 40% of synthetic rubber are imported. In 2008, the production of all kinds of tires in China was about 546 million (including motorcycle tyres, etc.), and the production of waste tires was nearly 200 million.
As we all know, the world tire industry has passed more than a century, our country tire turn new history can be traced back to the earliest tire club in 1928, even though in 1937 set up the first domestic double tire factory, also has a history of 72 years so far. In the 60 years since the founding of new China, China's tire renovation industry has undergone earth-shaking changes.
Between 2004 and 2008, the number of new births in China was 239 million, 318 million, 433 million, 479 million, 555 million bars (more than doubled in five years). Due to the severe shortage of natural rubber and synthetic rubber resources, it also promoted the rapid development of tyre renovation industry. Old tires refurbished volume increasing year by year, from 2004 to 2004, 2005, 2005, 2006, article 10 million mark, with growth in 2007 to 11 million, 2008, 2008, 2009 by 13 million. China's tyre refurbishment industry has begun to step into the ranks of the world's leading manufacturers of tyres. In spite of the rapid development of tyre refurbishment industry in China, the variety of retread tyres is not wide enough. More than 80% of them are now concentrated in the retread of buses and freight cars. Other things such as the refurbishment of the car tyres are only just beginning, with the refurbishment rate of the large ore tyres accounting for only 20 per cent and the refurbishment rate for air tyres only about 10 per cent. According to the statistics of the national bureau of statistics of 54 enterprises in China in 2008, the total industrial output value of the tyre was 2.23 billion yuan. According to the statistics of 209 enterprises, the total industrial output value of reclaimed rubber is 12.3 billion yuan.
2.The main characteristics of industry development in the past five years
(I) the expansion of the industry is more obvious. According to incomplete statistics, domestic tire refurbishment enterprises are nearly 1,000, with an annual capacity of about 20 million. The annual output of the tire refurbishment enterprise has reached more than 50 thousand, with the annual output of more than 100 thousand enterprises already more than 15, and the largest production enterprise has reached 300,000 or above. It also has more than 1000 production enterprises and produces 3.5 million tons per year. The annual output of reclaimed rubber production enterprises reached more than 100 thousand tons, with more than 10 enterprises producing more than 50,000 tons, and the largest production enterprises have reached 100,000 tons. More than 200 rubber powder production enterprises with annual capacity of 1 million tons; Waste tyre pyrolysis, there are two ways in our country, is a standardized scientific cracking, due to large investment, produce the poor quality of carbon black, hard to sales, slow development, the application of less than 10%, the annual output of about 50000 tons. The other is to make up more than 90 percent of the oil refining, which is serious for environmental pollution. Due to small investment, rapid recovery and large profits, the government has repeatedly banned it despite the ban.In 2009, there were 13 million tire renovations, 2.45 million tons of reclaimed rubber and less than 100,000 tons of rubber powder.
(2) the industrial layout shows the trend of cluster development, private investment dominates. Bigger tires refurbished domestic enterprises are mainly distributed in guangdong, shandong, sichuan, fujian, jiangsu and other places, has formed the state-owned, private and foreign capital coexistence pattern of diversified development, private capital become the dominant force; The production of reclaimed rubber has been established in tangshan, jiangsu province, jiangsu nantong, shanxi pingyao, zhejiang wenzhou, henan jiaozuo, guangdong maoming, sichuan ya 'an and other areas. To form the industrial chain of recycling, dismantling, regeneration and deep processing of waste tires.
(3) breakthroughs in key technologies. There are several main aspects:
1. The key equipment for the production of tire retread, rubber powder and recycled glue has been mainly imported to the present basic implementation of localization, and most products have been solved or reached international level.
2. The form of tire retread has been changed from the heat - tipped oblique to the main change of the presulfurization method.
3. The use of some current inspection equipment makes the refurbishment tire inspection more scientific and reliable, thus ensuring the quality of the products.
4. The auxiliary agent of reclaimed rubber has changed from high pollutant to new replacement capacity with less pollution emission, which has greatly improved in exhaust control and energy consumption reduction.
5. The technology of rubber powder desulfurization has achieved dynamic, low temperature, constant pressure, continuous and net emission.
6. The application of low temperature micro-negative pressure catalytic cracking technology, which turns black pollution into green energy, realizes the purpose of continuous, low temperature, energy conservation, emission reduction, high efficiency and environmental protection.
