Analysis on recycling and development trend of the

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Analysis on recycling and development trend of waste plastics

with the extensive application of plastics and the current high crude oil price, since the beginning of the 21st century, China's plastic recycling industry market has gradually become prosperous, small and medium-sized enterprises such as Yongquan have emerged, and investment has been active. From the previous family workshop recycling of recycled plastics mode to a pure business mode driven by market demand, it is developing into a recycling and processing cluster An environment-friendly industrial economy with intensive market transactions and completely driven by market demand and price

gb/t 14800 ⑴ 993 test method for bursting strength of Geotextiles (equivalent to ASTM D 3787) gb/t 13763 ⑴ 992 test method for bursting strength of Geotextiles by trapezoidal method at present, there are more than 10000 plastic recycling enterprises in China, and recycling points are all over the country. A number of large-scale recycled plastic recycling trading markets and processing distribution centers have been formed, mainly distributed in Guangdong, Zhejiang, Jiangsu, Fujian, Shandong, Hebei, Henan, Anhui Liaoning and other provinces with developed plastic processing industry. Zhejiang Yuyao, Ningbo, Dongyang, Cixi, Taizhou; Nanhai, Dongguan, Shunde, Shantou, Guangdong; Jiangsu Xinghua, Changzhou, Taicang, Lianyungang, Xuzhou; Wen'an, Baoding, Xiongxian and Yutian in Hebei; Laizhou, Zhangqiu, Linyi, Shandong; Henan Anyang, Changge, Luohe; The market scale of recycling, processing and operation of recycled plastics in Wuhe and other places in Anhui Province is becoming larger and larger, and the annual trading volume is mostly hundreds of millions to billions of yuan, showing a trend of vigorous development. There are also a large number of similar processing and trading centers around major central cities in China, such as Beijing, Shanghai, Tianjin, Chongqing, Guangzhou, Wuhan, Nanjing, Hefei, Xi'an, Taiyuan, Kunming, Chengdu, Shenyang, Urumqi and other places

the number of enterprises and personnel engaged in recycling and processing of recycled plastics is huge and growing steadily, mainly self-employed and farmers, as well as some investors in other industries. The plastic recycling industry provides a channel for rural economic growth, employment of rural surplus labor force and income increase, and has made great contributions to resource recycling and environmental protection. It is an important part of the environmental protection industry.

recycled plastics are different forms of plastics that still have recycling value at the end of their service life. Almost all thermoplastics have recycling value. Recycled plastics are produced in the production of synthetic trees and fats, in the production and processing of plastic products and semi-finished products, in the plastic logistics process and after consumer use. Generally, the plastic produced in the process of synthesis and processing is called pre consumer plastic; What is produced after circulation, consumption and use is called post consumer plastic. The plastic produced before consumption is small, with stable quality and high regeneration value. Generally, it is properly treated in the production process and can be completely reused. What we call recycled plastics generally refers to recyclable plastic products that lose their use value after consumption and can be recycled. After recycling, concentration, classification and scientific and reasonable disposal, plastics can obtain regeneration value and realize recycling. Some of the imported waste plastics are foreign pre consumption plastics with good quality and high value. They can be used as recycled raw materials and should be encouraged to import in large quantities

the major varieties of recycled plastics include plastic film (including plastic packaging bags and agricultural films), plastic wire and woven goods, foamed plastic products, plastic packaging boxes and containers, cable wrapping materials, as well as various daily-use miscellaneous goods, sports and entertainment, health care and other daily-use plastic products, of which film, foam, packaging boxes and containers, weaving, sheet and other plastic products are mainly used for plastic packaging. In addition, the scrap rate of some other plastic packaging products (such as plastic trays), agricultural plastic products (such as agricultural plastic water-saving equipment), and plastic products for decoration is also high

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 it will be discarded within a year, and it is the main source of recycled plastics. This is similar to foreign countries. For example, in 2001, the recovery of plastic packaging in Britain was 91.2% of the total plastic recovery. In addition, the environmental impact of plastic composites, ultra-thin packaging materials, mulching films, disposable plastic products, etc., which have little recycling value or high recycling cost and are difficult to dispose, cannot be ignored

however, the use of structural plastic building materials such as plastic pipes and fittings, profiled materials, reinforced anti leakage Geotextiles (including waterproof coiled materials) has increased significantly in recent years, and the actual service life is long. At present, there is not a large amount of scrap period, so the waste of this part is not large

at present, the social ownership of TV sets is about 350million, washing machines are about 170million, refrigerators are about 130million, computers are 16million, and household air conditioners are also large. Most of these electrical appliances were introduced into families in the middle and late 1980s. It is expected that China will usher in a peak of upgrading of household appliances in the next few years. Since China has not yet established a standardized recycling system for waste household appliances, it is common for a large number of household appliances to be out of service and disposed of arbitrarily. The resulting safety hazards, energy waste and environmental pollution are becoming more and more prominent, which has attracted the attention of all sectors of society

according to the normal service life of household appliances of 10-15 years, the average number of TV sets to be scrapped is more than 5million per year, the average number of washing machines is 5million per year, and the number of refrigerators is about 4million per year. Therefore, China will eliminate more than 15 million waste household appliances per year. In recent years, the upgrading speed of electronic communication equipment such as computers, VCDs, DVDs, records, optical discs and so on has accelerated, and the number of scrapped products has increased sharply every year, which has brought serious environmental problems

plastics are an important part of household electrical appliances. According to the proportion in Table 4, the resulting renewable plastics are at least 150000 tons per year. If we take into account the amount of renewable plastics of discarded electronic communication equipment, this figure is about 200000 tons. The main components of these recycled plastics are polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), ABS, etc., which are of great recycling value; Some thermosetting plastics, foamed polyurethane and glass fiber reinforced plastics are relatively difficult to recycle

in the process of recycling waste household appliances, the reasonable disposal of recycled plastics is one of its important links. The types of plastics used in different household appliances are different, and the types of plastics used in the same product are also different due to different manufacturers. Sometimes, the additives, functional masterbatches or formulas used in the same types of plastics are different, which makes the recycling of household appliances plastics difficult. We must take it seriously, and strive to achieve effective recycling, so as to reduce environmental pressure and energy waste as much as possible

the consumption of plastic accessories for electronic and electrical appliances has reached more than 1 million tons. The number of scientific and technological cooperation projects between Belarus and China has increased from 20 two years ago to 28 now in industrial supporting, information, transportation, aerospace and other fields, which are widely used, and the products are rapidly upgraded. As these products gradually enter a large number of scrap period, they have become an important source of waste plastics

the biggest advantage of using plastics to make auto parts is to reduce the weight of the car, save costs and processes, and improve some performance of the car. The average weight of automotive plastics in developed countries has exceeded 100 kg. Automotive scrap will bring problems of recycling automotive plastics resources and reasonable treatment of the environment

according to the prediction of authoritative experts in the automotive industry, China's automobile output will reach 5.7 million in 2005 and accurate data will be obtained. The total demand for automobiles in 2006 will reach 6.5 million. The average consumption of automotive plastics in China is 70, with an annual consumption of more than 400000 tons. The varieties of automotive plastics include PVC, PP, PE, PU, ABS, PA, POM, etc. With the increasing amount of automobile scrap year by year, the amount of automotive plastics, as well as plastics for household appliances and electronic appliances, has increased steadily. Its recycling has become the focus of the source of waste plastics, and the treatment principles are similar. However, the dynamic fatigue testing machine and electro-hydraulic servo universal testing machine are particularly prominent. In 2010, the demand for automotive plastics in China will reach about 800000 tons. Therefore, the task of recycling and recycling plastic parts of end-of-life vehicles will be more and more arduous

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