June 5, 2019 is the 48th World Environment Day, and the global home event is located in Hangzhou, China. The theme of this year's Environment Day is "Blue Sky Defence War, I am an actor", aiming to mobilize the whole society to reduce energy and resource consumption and pollution emissions through practical actions, and to fight against the blue sky defense war and other pollution prevention and control battles.
As we all know, car tires are a kind of consumables. When each car runs a certain mileage, the tires are replaced once, and the discarded tires are called "black pollution". The accumulation of a large number of discarded tires not only seriously affects the living environment of human beings, but also occupies a large amount of land resources, which is highly prone to mosquito-borne diseases, seriously deteriorates the natural environment, and may cause fires.
According to relevant data, there are currently 1.5 billion tires scrapped every year in the world, and an average of more than 4 million tires are scrapped every day. With so many used tires, where will it flow in the end?
Beginning in the 1990s, developed countries have four main ways to reuse used tires: one is to renovate and use tires with good carcass to extend the service life of tires; the other is to use electricity as fuel for fuel generation; Rubber hydrocarbons and carbon black, fuel oil, etc.; four are made of rubber particles, fine rubber powder and recycled rubber. In addition to this, there are some specific practices worthy of reference.
In some EU countries, many used tires are transported to cement plants, power plants, paper mills, steel plants, etc. as fuel. The burning time is long and many of them can make up for the additives that must be added during fuel use. Not only reduces production costs, but also cures environmental problems caused by used tires.
In the United States, used tires are erected and stacked in a row, buried in the ground, fixed as a discharge culvert, economical and practical.
In Japan, the waste tires are placed neatly on the slope surface, and then the gap is made of cement to make the waste tires and the slope surface integrated, which saves cement and enhances the firmness of the slope surface, and also utilizes waste tires.
In France, the technicians cut the used tires into two symmetrical halves, then stacked them at a 20-degree angle to facilitate drainage, and then used a metal grille as a fire shield on the wall cover, which built a green sound-absorbing wall and sound-absorbing effect. Excellent.
In Africa, the locals make the tires after desulfurization treatment. The quality of rubber slippers is better than that of plastics. It is not easy to break and the price is not expensive. Therefore, it is widely welcomed by the market, and even wearing tire shoes becomes a fashion.
In addition, there are other countries that separate the bead of the used tire from the tire body, and then cut the tire body into strips of different sizes according to the needs, and use these strips to woven into an elastic protective net, an anti-collision wall, a non-slip mat, and the like. It is used for building and blasting sites to block flying stones, protect docks, and temporarily reinforce road surfaces. The bead cut from the used tire can also be processed into a sewage pipe.
China has been the world's largest auto market since 2008. According to the statistics of the Ministry of Public Security, the number of motor vehicles in the country has reached 327 million in 2018. In 2015, the national waste tire production has reached 330 million, with a total weight of about 12 million tons. It is estimated that by 2020, China's waste tire production will reach 20 million tons. At present, the main methods for comprehensive utilization of used tires in China include tire retreading, prototype utilization, vulcanized rubber powder, and recycled rubber. In recent years, thermal cracking of waste tires has also received attention and formed investment heat.
The added value of used tires is high, but due to the irregular use of tires in China, there are few refurbished carcasses, and the current rate of renovation is not high. The direct application of vulcanized rubber powder is an environmentally-friendly and resource-friendly and harmless processing and utilization method of internationally recognized waste tires. Under the premise of ensuring that rubber products meet the quality indicators, reasonable use of recycled rubber, reduce the amount of raw rubber, carbon black, rubber additives, fillers, 3 tons of recycled rubber instead of 1 ton of raw rubber application in the rubber industry products become Chinese characteristics . According to the data, China is not only the world's largest producer of recycled rubber, but also the world's largest producer of rubber powder.
Apply to life. Thanks to the elasticity of the tire, it can be transformed into a creative chair, a stylish small sofa or an idyllic Japanese-style straw tuft made of a layer of bulrush. It is comfortable and flexible. Some people also paint tires in different colors, plant some flowers in them, and also decorate their lives. Some also hang it on the wall, not only saving pots, but also making use of waste.
At present, the market for used tire recycling equipment produced in China is very promising. The demand for rubber pellets and rubber powder at home and abroad is also very large. People are also constantly looking for opportunities to reuse tires in their lives. It can be said that the “harmless recycling and environmentally-friendly utilization” of used tires has the duality of creating resources and protecting the environment, and showing new development opportunities for entrepreneurs who are engaged in and will be engaged in the recycling of used tires.