Recycling polyester fiber can be expected in the future

The upgrade of chemical recycling technology and the establishment of a waste textile recycling system will jointly promote the realization of "fiber-fiber" recycling and accelerate the development of high-end recycled polyester fiber

A few days ago, Yizheng chemical fiber recycled polyester fiber passed the GRS (Global Recycling Standard) certification, and completed the first batch of industrialized products

Polyester fiber is the most produced variety among synthetic fibers

Recycling polyester fiber, namely regenerated polyester fiber, is the use of waste chemical fibers, textiles and other waste materials, which are treated by physical methods and then melted or dissolved, or the recycled polymer materials are further cracked into small molecules and re-polymerized.

After years of development, China's recycled polyester fiber production has a capacity of 10 million tons, accounting for more than 80% of the world's capacity and output

The "depolymerization-purification-repolymerization" chemical regeneration process can truly realize recycling, but the process is difficult and costly, and currently only partial regeneration can be achieved, and there are still problems such as large waste pollution

In recent years, with the public's emphasis on the concept of recycling, relevant domestic laws and regulations have gradually been established and improved

In this context, the demand for recycled materials in the terminal consumer sector has also increased sharply

　　Driven by the strong market, the chemical regeneration technology and waste textile recycling system required for the production of domestic high-end recycled polyester fiber are developing rapidly
.
The "blessing" includes the control mechanism and safety evaluation technology of the polyester fiber regeneration process, the physical technology of sorting and purification, hot melt viscosity increasing, the energy utilization technology of gasification and oil pyrolysis, and the research of the application technology of recycled polyester fiber.
Next, the "depolymerization-purification-repolymerization" chemical regeneration process, as a system of diversified regeneration technologies, has developed rapidly and maturely
.
At the same time, significant progress has been made in the ecological evaluation of polyester fiber life cycle and the construction of a recycled polyester fiber logistics system, which has strongly promoted the establishment of an industrialized waste textile recycling system
.

　　At present, the recycling rate of waste textiles is 84% ​​in Japan, 49% in the EU, 29% in the United States, and only 10% in China
.
The reserves of waste chemical fiber textiles in China exceed 200 million tons.
Under the dual promotion of policy and technology, polyester regeneration will become the key to the development of recycling cycles in the textile industry
.
In addition, according to calculations, if China's waste textiles can be fully recycled, it is equivalent to reducing the use of 24 million tons of crude oil each year, saving nearly 1/3 of the cotton planting area, and reducing 80 million tons of carbon dioxide emissions
.

　　The chemical fiber circular economy is based on the principle of "reduction, reuse, and resource utilization", with improving resource utilization efficiency as the core, and promoting resource utilization from a linear model of "resources-products-waste" to "resources-products-waste-regeneration" The "resources" cycle model is transformed to achieve the sustainable development of economic and environmental protection with as little resource consumption and environmental costs as possible, and to achieve harmony between the social economic system and the natural ecosystem
.
(Che Min)

Transfer from: China Petrochemical News