With the large-scale application of plastics and the current high crude oil prices, the plastic recycling industry in China has become prosperous since the beginning of the 21st century. Small and medium-sized enterprises have emerged, and investment has been active. The demand-driven pure business model is changing, and is being developed into an environmentally-friendly industrial economy with recycling processing clusters, market transaction intensification, and driven entirely by market demand and price.
At present, there are more than 10,000 plastics recycling companies in China. Recycling outlets have spread all over the country. A number of large-scale Recycled Plastic recycling markets and processing centers have been formed, mainly in Guangdong, Zhejiang, Jiangsu, Fujian, Shandong, and Hebei. Henan, Anhui, Liaoning and other plastic processing industry developed provinces. Zhejiang Yuyao, Ningbo, Dongyang, Cixi, Taizhou; Guangdong Nanhai, Dongguan, Shunde, Shantou; Jiangsu Xinghua, Changzhou, Taicang, Lianyungang, Xuzhou; Hebei Wen'an, Baoding, Xiongxian, Yutian; Shandong Laizhou, Zhangqiu, Linyi; Henan Anyang, Changge, Luohe; Anhui Wuhe and other places of recycled plastics recycling, processing, operating market scale is growing, the annual transaction volume is mostly in the hundreds of millions to several billion yuan, showing a trend of vigorous development. There are also a large number of similar processing and trading gathering places around major cities around the country such as Beijing, Shanghai, Tianjin, Chongqing, Guangzhou, Wuhan, Nanjing, Hefei, Xiâ€™an, Taiyuan, Kunming, Chengdu, Shenyang, and Urumqi.
The number of enterprises and personnel engaged in the recycling and processing of recycled plastics is huge and steadily increasing, mainly self-employed farmers and farmers, and there are also some other industry investors. The plastic recycling industry provides a channel for rural economic growth, employment for rural surplus labor, and income increase. It has made tremendous contributions to the recycling of resources and the protection of the environment. It is an important part of the environmental protection industry.
Recycled plastics are based on different forms of plastics that still have recycling value at the end of their useful life. Almost all thermoplastics have recycling value. Recycled plastics are produced both in the synthesis of trees, in the production of fats, in the production and processing of plastics and semi-finished products, in the logistics of plastics and after consumption by consumers. In general, what is produced in the process of synthesis and processing is called pre-consumer plastic; and what is produced after circulation, consumption, and use is called post-consumer plastic. Pre-consumption plastic has a small amount of production, stable quality, and high regeneration value. It is generally handled properly in the production process and can be completely reused. What we call recycled plastic generally refers to recycled plastic products that lose their use value after consumption and can be recycled. After recycling, concentration, classification, and scientific and reasonable disposal, plastics can be recycled and recycled. Some of the imported waste plastics belong to foreign pre-consumer plastics, with good quality and high value. They can be used as renewable raw materials and should encourage large amounts of imports.
The major categories of recycled plastic sources are plastic films (including plastic bags and agricultural films), plastic wires and woven products, foam plastic products, plastic crates and containers, cable coating materials and various daily sundries, sports and entertainment, Health care and other daily-use plastic products, including film, foam, packaging and containers, weaving, sheet and other plastic products are mainly used for plastic packaging. In addition, there are some other plastic packaging products (such as plastic trays), agricultural plastic products (such as agricultural plastic water-saving equipment), decoration and decoration of plastic products have a higher scrap rate.
The consumption of plastic packaging was 6.344 million tons in 2004 and more than 7 million tons in 2005. It is estimated that at least 80% of the plastic packaging was scrapped within one year, which is the main source of recycled plastics. This is similar to foreign countries. For example, in 2001, the amount of plastic packaging recovered in the UK was 91.2% of the total amount of plastics recovered. In addition, some environmental impacts such as plastic composites, ultra-thin packaging materials, plastic film, and disposable plastic products, which have little recovery value or high recovery costs and are difficult to handle, cannot be ignored.
However, structural plastic building materials such as plastic pipe fittings, profiled materials, reinforced seepage-proof geotechnical materials (including waterproofing membranes) have increased in usage in recent years, and the actual service life is longer. At present, it is not yet a large amount of scrapping period. Therefore, the amount of waste in this part is not large.
At present, the television has a social possession of about 350 million units, washing machines of about 170 million units, refrigerators of about 130 million units, computers of 16 million units, and household air conditioners have a large amount of possession. Most of these appliances entered the family in the middle and late 1980s, and it is expected that China will usher in a new era of household appliances replacement in the next few years. As China has not yet established a standardized recycling system for used and end-of-life household appliances, the phenomenon of overdue service of a large number of home appliances and disposal of waste and used household appliances is common. The resulting potential safety hazards, energy waste and environmental pollution problems have become increasingly prominent and have caused societies. Concerns from all walks of life.
According to the normal service life of home appliances from 10 to 15 years, the average number of TVs that need to be scrapped is more than 5 million each year, the average number of washing machines is 5 million each year, and the number of refrigerators is about 4 million each year. As a result, China will eliminate more than 15 million units each year. Waste home appliances. In recent years, the speed of replacement of electronic communication equipment such as computers, mobile phones, VCDs, DVDs, records, and optical discs has accelerated, and the number of scraps has risen sharply each year, which has brought about serious environmental problems.
Plastics are an important part of home appliances. According to the ratio in Table 4, the renewable plastics produced each year will be at least 150,000 tons. If we consider the amount of renewable plastics used in electronic communication equipment, the figure will be more than 200,000. Ton. The main components of these recycled plastics are polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), ABS, etc., and their recycling and reuse value is relatively large. Some thermosetting plastics, foamed polyurethanes and glass fiber reinforced plastics are Relatively difficult to recycle.
Appropriate disposal of recycled plastics is one of the important steps in the recycling process of used home appliances. The types of plastics used in different household electrical appliances are not the same. The types of plastics used by the same product vary from manufacturer to manufacturer. Sometimes the same type of plastic and the additives, functional masterbatches or formulations used are different. This gives household appliances plastics. Recycling work has caused a certain degree of difficulty and must be taken seriously. It strives to be effectively recycled and used to minimize environmental pressure and energy waste.
The amount of electronic accessories used for plastic accessories has reached more than 1 million tons, and it has been widely used in industrial facilities, information, transportation, aerospace and other fields, and product replacement is fast. As this type of product gradually enters a large number of scraps, it becomes an important source of waste plastics.
The biggest benefit of using plastics to make automobile parts is to reduce the weight of the car, save the cost and process, and improve some of the performance of the car. The plastics used in the developed countries have exceeded 100 kg on average, and the scrapping of automobiles will bring about the recycling and utilization of vehicle plastic resources. Deal with the environment properly.
According to the prediction of authoritative experts in the automotive industry, China's auto production in 2005 will reach 5.7 million, and the total automobile demand in 2006 will reach 6.5 million. The average use of automotive plastics in China is 70, and the annual consumption is more than 400,000 tons. Automotive plastic varieties are: PVC, PP, PE, PU, â€‹â€‹ABS, PA, POM and so on. With the increase in the number of car scraps, the amount of plastics used in automobiles and home appliances and electronic and electrical plastics has increased steadily. The recycling and recycling of plastics have become the focus of waste plastics, and the processing principles are similar. By 2010, China's auto plastic consumption will reach 800,000 tons. Therefore, the task of recycling and reusing the scrapped plastic parts will be more and more arduous.
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