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How will the chemical fiber industry go in the next 5 years?
Release date: [21:11:15]  Read total [42] times

On April 21, the Ministry of Industry and Information Technology issued the "Guiding Opinions of the Ministry of Industry and Information Technology and the National Development and Reform Commission on the High-Quality Development of the Chemical Fiber Industry". In the "Guiding Opinions", it is proposed that by 2025, the output target of bio-based chemical fibers and degradable fiber materials will increase by more than 20% annually.


The "Guiding Opinions" clarifies the development goals of the chemical fiber industry:


By 2025,


The industrial added value of chemical fiber enterprises above designated size has an average annual growth rate of 5%, and the proportion of chemical fiber output in the world is basically stable.


The innovation capability has been continuously enhanced, the industry R&D investment intensity has reached 2%, and the R&D and manufacturing capacity of high-performance fibers can meet the national strategic needs.


The digital transformation has achieved remarkable results. The digital penetration rate of enterprise operation and management has reached 80%, and the numerical control rate of key processes has reached 80%.


The green manufacturing system has been continuously improved, the proportion of green fibers has increased to more than 25%, the output of bio-based chemical fibers and degradable fiber materials has increased by more than 20% annually, the comprehensive utilization level and scale of waste resources have been further developed, and the carbon emission intensity of the industry has been significantly reduced.


Form a group of leading enterprises with strong competitiveness, build a high-end, intelligent and green modern industrial system, and build a strong chemical fiber country in an all-round way.


The "Guiding Opinions" also proposes to accelerate the development of bio-based chemical fibers and degradable fiber materials:


Improve the purity of bio-based chemical fiber monomers and raw materials, speed up the integration of stable, high-efficiency and low-energy-consumption complete sets of technologies and equipment, and realize large-scale and low-cost production. Support degradable aliphatic polyester fiber and other degradable fiber materials to tackle key technical equipment problems, break through the technical bottleneck of raw material preparation and efficient polymerization, strengthen the evaluation of fiber degradable performance, and guide downstream applications.


1. Bio-based chemical fiber raw materials. Break through the special pulp, solvent, cross-linking agent for lyocell fiber and bio-based monomers such as fiber grade 1,3-propanediol, succinic acid, 1,4-butanediol, furandicarboxylic acid, high-light pure lactide and so on. High-efficiency preparation technology of raw materials.


2. Bio-based chemical fibers. Improve key technologies for large-scale production of lyocell fibers, polylactic acid fibers, bio-based polyamide fibers, trimethylene terephthalate fibers, polyethylene furandicarboxylate fibers, seaweed fibers, and chitosan fibers. Research on green manufacturing technologies for cellulose fibers such as ionic liquid solvent method (ILS method) and low-temperature urea method.


3. Degradable fiber material. Overcome PBAT (copolymer of butylene adipate and terephthalate), PBS (polybutylene succinate), PHBV (polyhydroxybutyrate valerate), FDCA-based polyester ( Furandicarboxylic acid-based polyester), PHA (polyhydroxy fatty acid ester), PCL (polycaprolactone) and other preparation technologies. Orderly carry out the industrialization and application of materials such as poly-3-hydroxyalkanoate (PHA) and polybutylene succinate-co-butylene terephthalate (PBST).


In addition, the "Guiding Opinions" also proposes to promote the green and low-carbon transformation of the chemical fiber industry:


(1) Promote energy-saving and low-carbon development. Encourage enterprises to optimize the energy structure, expand the proportion of new energy applications such as wind power and photovoltaics, and gradually phase out coal-fired boilers and heating furnaces. Formulate a roadmap for carbon peaking in the chemical fiber industry, clarify the implementation path of carbon reduction in the industry, increase the research and development of green processes and equipment, and strengthen technological transformation of clean production and promotion of key energy-saving and emission-reduction technologies. Accelerate the construction of green factories, green products, green supply chains, and green parks in the chemical fiber industry, carry out the construction of water and energy efficiency leader demonstration enterprises, and promote carbon footprint accounting and social responsibility construction.


(2) Improve the level of recycling. Realize the large-scale and low-cost production of chemically recycled polyester, and promote the R&D and industrialization of key technologies such as recycled nylon, recycled polypropylene, recycled spandex, recycled acrylic, recycled viscose, and recycled high-performance fibers. Promote key technological breakthroughs and industrial development in the high-value utilization of waste textiles, increase the recycling of used military uniforms, school uniforms, police uniforms, tooling and other uniforms, and encourage relevant production enterprises to establish recycling systems.


(3) Eliminate backwardness in accordance with laws and regulations. Strict energy efficiency constraints, improve the green manufacturing standard system of the chemical fiber industry, and accelerate the elimination of outdated production processes and equipment with high energy consumption, high water consumption, and high emissions in accordance with laws and regulations, so as to provide space for optimizing the supply structure. Increase the implementation of the normative conditions for the regenerated cellulose fiber (viscose) industry and the recycled chemical fiber (polyester) industry, carry out normative announcements, and strictly enforce energy consumption, material consumption, environmental protection, quality and safety requirements.


1. Promote clean production technology and equipment. Promote polyester plant waste heat utilization technology, PTA waste heat power generation technology, regenerated cellulose fiber bio-process low-concentration waste gas treatment technology, regenerated cellulose fiber production - lye recovery and hemicellulose extraction technology, nylon-6, nylon filament, dry French spandex energy saving and emission reduction technology. Promote the closed, continuous and automated production technology, and reduce the amount of organic solvents. Promote the use of raw and auxiliary materials with low (non-) VOCs content to improve the level of pollution control.


2. Breakthrough in recycling technology. Carry out research on the identification and separation of waste textile components, improve key technologies for polypropylene and high-performance fiber recycling, make breakthroughs in polyester and nylon chemical regeneration technology, acrylic fiber and spandex regeneration technology, cotton/regenerated cellulose fiber waste textile recycling and green pulping industrialization technology. Promote high-quality large-scale production of regenerated polyester filaments by direct spinning of bottle flakes.


3. Build a green manufacturing system. Encourage downstream enterprises in the spinning, weaving, clothing, home textiles and other industrial chains to participate in the certification of green fiber products, promote the construction of a trusted platform for green fiber products, and improve the quantity and quality of green fiber supply. Cultivate a group of green design demonstration enterprises, green factory benchmark enterprises and green supply chain enterprises.


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