Drive the green transformation and upgrading of the textile industry - leading a "cloth" and "weaving" for a low-carbon future

"At present, the flash wash process is mainly applicable to polyester fabrics; The word "flash" in the process name mainly emphasizes the significant increase in production efficiency and production speed." Sun Sumei introduced that in order to calculate the production capacity of a single equipment, the traditional dyeing cylinder equipment can produce 4 tons per day, and the flash dyeing production line can produce 25 tons per day. "The flash dyeing process has been industrialized, and the company has four production lines with a daily output of more than 100 tons of cloth. At the same time, our production costs have also been greatly reduced, in the past to achieve such a output of at least 400 workers, now only more than 100 people. From the perspective of environmental protection, the chemical oxygen demand per ton of wastewater was as high as two or three thousand, and now only in the cleaning machine, the treatment of dark cloth needs to use some water, the water consumption is greatly reduced, the chemical oxygen demand value is also reduced to several hundred, it is easier to deal with, and the pollution is smaller."

Turn an old bottle into an old dress

What can an old plastic bottle do? If it is carelessly thrown away, it is polluting the environment. But if recycled, it could be turned into a piece of clothing, a fluffy toy, or a set of car interiors.

In Zhejiang Ningbo Dafa Chemical Fiber Co., LTD., there are tens of billions of waste plastic bottles a year into treasure. "We use waste textiles and waste drinking water bottles as the initial raw materials, after sorting, cleaning, drying, melting, spinning and other ten processes, the annual production of high-performance recycled polyester staple fiber 250,000 tons." Qian Jun, general manager of the company, told reporters that these polyester short fibers can be used as interior upholstery, sound-absorbing filter materials, as well as internal fillings for sofas and bedding, achieving a win-win situation of economic and social benefits.

Nowadays, the transformation of plastic bottles into chemical fibers in the textile industry is not a rare thing, and the wide application of efficient preparation technology of recycled polyester fibers has promoted the development of the textile industry in the direction of green, low-carbon and recyclable.

According to Qian Jun, the raw material for the production of recycled polyester staple fiber is polyethylene terephthalate (PET). The degradation of polyester in the natural environment is usually more than 50 years, and it is easy to cause environmental pollution. At the same time, polyester comes from petrochemical resources, and every 1 ton of PET waste is equivalent to saving 6 tons of oil resources and reducing 3.2 tons of carbon dioxide emissions. "At present, the stock of waste polyester products in China has exceeded 200 million tons, but its comprehensive recycling rate is still less than 15%, so the development of recycled polyester fiber industry is of great significance to protect the environment and develop circular economy."

In addition to waste plastic bottles, the recycling of waste textiles is also a major direction for the green development of the textile industry.

Zhejiang Beauty New Materials Co., Ltd. is an enterprise that helps "old clothes reborn". Recycled waste textiles, clothing factory scraps and other initial raw materials, are first sorted, ground, and then through chemical decomposition technology, degraded into small-molecule polyester materials, and finally through rectification, filtration, purification and polymerization means, re-made into new high-quality, multi-functional, traceable polyester fibers.

"The recycled fibers produced by the company have entered the high-end fabric market and are widely used in high-end sports, outdoor, fashion, home textiles and other fields, building a closed cycle from waste textiles to recycled new materials." According to the relevant person in charge of Zhejiang Beauty New Materials Co., LTD., in recent years, the company has handled 40,000 tons of waste textiles each year, and has an annual output of 30,000 tons of recycled products.

In March this year, the National Development and Reform Commission, the Ministry of Commerce, the Ministry of Industry and Information Technology jointly issued the "Implementation Opinions on Accelerating the recycling of waste Textiles", which proposed that by 2025, the recycling system of waste textiles will be initially established, the recycling capacity will be greatly improved, and the recycling rate of waste textiles will reach 25%. The output of recycled fibers from waste textiles reached 2 million tons. By 2030, a more complete recycling system of waste textiles will be built, the awareness of recycling among producers and consumers will be significantly improved, the ways of high-value utilization will continue to expand, the level of industrial development will be significantly improved, the recycling rate of waste textiles will reach 30%, and the output of recycled fibers of waste textiles will reach 3 million tons.