Recycling Of Textiles And Waste Polyester Bottles Has Become A Major Issue For Industry Development

With the continuous growth of polyester consumption and the increasing awareness of environmental protection, high-efficiency, harmless, airtight, recycling, high-value recycling spin Products and waste polyester bottles have become a major topic for industry development.

Outstanding social benefits of comprehensive utilization of resources

With the rapid growth of chemical fiber industry, the source of raw materials and waste disposal have become thorny issues. Synthetic fiber raw materials are mainly based on non renewable oil resources, and China's dependence on crude oil import is high. How to reduce dependence on oil resources has become a very prominent practical problem.

The rapid development of chemical fiber industry represented by polyester has brought scientific and technological progress and comfort to human production and life. At the same time, environmental pollution caused by various waste textiles is also increasing. Through the production, processing and utilization of waste polyester materials, the recycled polyester fiber industry has generated greater social benefits than the economic benefits of enterprises. First, the employment of millions of people has been solved. Among them, the recycling and cleaning industry alone has solved the employment of about 450000 people, and the renewable chemical fiber processing enterprises have about 300000 people. At the same time, the renewable chemical fiber industry has also directly driven the employment of about 800000 people in related industries. Second, the renewable chemical fiber industry directly provides a large amount of taxes for the country every year and earns foreign exchange through export. Third, save oil resources. Compared with PET chips made from petroleum resources, 6 tons of standard coal can be saved in energy consumption per ton of raw materials for the production of recycled polyester staple fiber from PET waste bottle chips. Fourth, reduce white pollution, clean and beautify the environment. Through the production and processing of waste materials, the effective supply of social products has been increased, and the development of recycled polyester fiber industry has directly promoted and promoted the development of related industries (such as recycling, international trade, logistics, textile machinery, auxiliary materials, etc.).

In 2012, the capacity of regenerated chemical fiber was 8.3 million tons, and the output was 5.3 million tons. because clothing Exports have declined, and the use of waste clothing materials has declined by 15% to 20% in China. It is estimated that cloth The consumption of foam material is 800000 tons, the imported whole bottle/bottle piece is 2.05 million tons (the gross piece is 10%~12%, the whole bottle is 20%~22%, and the net bottle piece is 1.7 million tons), the waste silk, stiff material and foam material are 250000 tons, and the recovery of domestic beverage bottles is 2.8 million tons.

Technical progress quickly reaches advanced level

The recycling treatment of domestic drinking bottles has developed from small-scale crushing and simple washing to decentralized recycling, and gradually concentrated, large-scale classification, sorting, crushing and high-temperature boiling.

Due to the complex source of raw materials and large difference in performance, each regenerated chemical fiber production enterprise has carried out supporting transformation of equipment according to the actual situation. The equipment is non-standard. The original VD404 and VD405 equipment was transformed into large capacity equipment of Japan Toyo Textile Technology. At present, the production line has been basically finalized, forming a production scale of 50 tons to 100 tons per day. In 2009, the domestic equipment and technology represented by the complete set of equipment and process technology for bottle chip recycling high-strength staple fiber of Pacific Textile Machinery passed the acceptance of relevant departments, marking that China's recycling technology and equipment level reached the international advanced level.

Narrow the Technical Gap and Renew the Consumption Concept

There is a certain gap between China and developed countries in terms of recycling: first, the policies, laws, regulations and taxes on the recycling and circulation system of raw materials are not sound enough, which makes it difficult to operate; Second, in terms of high quality and efficient processing of raw materials, spectrometers, chromatographs and metal detectors are generally used abroad for picking, while in China, manual picking is basically used; Third, in the production process of regenerated staple fiber, although the equipment, process, technology and management have reached the same international level, there is a certain gap between the developed countries and the developed countries in the development and application of products; Fourthly, the development and industrialization of chemical method technology in recycled polyester filament should be accelerated; Fifth, there is still a certain gap in the post treatment technology of recycled fiber products; Sixth, there is still a lack of mandatory means and relevant laws and regulations to ensure the use and promotion of products.

According to the national conditions and industry development planning, the technical development direction of recycled fiber is to research and develop efficient waste plastic sorting technology and equipment through intelligent identification and efficient separation of waste textiles and some spinnable plastics, and improve the recycling ratio of waste textiles; By developing the classification and pretreatment technology of waste textiles and resource technology, reduce emissions, save resources, improve product quality, improve production efficiency, and increase social and economic benefits; Vigorously develop differentiated and functional production technology of recycled fiber and its products, expand the field, and promote consumers' awareness and advocate healthy and green consumption concept through vigorous publicity.

Cultivate leading enterprises and build demonstration bases

The future development of China's renewable fiber industry should establish large-scale demonstration parks to promote the formation of several industrial clusters for comprehensive utilization of waste plastics and waste textiles in the country's renewable industry. The industry should cultivate enterprises with complete sets of treatment equipment and industrial production capacity, form a complete industrial chain of sorting, cleaning (disinfection), processing, resource utilization and harmless treatment, and promote the advanced experience of leading enterprises nationwide.

At the same time, a number of demonstration parks or bases for comprehensive utilization of waste plastics and textiles should be established in key areas of the country. For example, set up the Bohai Sea Circle Pilot in Shandong, set up the pilot park for comprehensive utilization of second-hand clothing in Jiangyin, Jiangsu, set up a high-value recycling demonstration park in Shaoxing, Zhejiang, set up a large harmless recycling industrialization park in Cangnan, Zhejiang, set up an industrial base for comprehensive research and development of waste plastics and waste textiles in eastern Guangdong, and set up a comprehensive recycling pilot in Jinjiang, Fujian, To form a complete industrial chain of comprehensive utilization of waste textiles, including recycling, transportation, sorting, utilization and sales.