Since the beginning of the new century, the pace of development of China's chemical fiber industry has been significantly accelerated, but the accompanying constraints on both resources and the environment have also intensified, and have become the main factors that restrict the sustainable development of the industry.
Since the 10th Five-Year Plan, the chemical fiber industry has increased its investment in energy conservation and emission reduction and achieved significant results. First, the localization of large-scale complete sets of technical equipment such as polyester, polyester, viscose staple fiber, and spandex significantly reduced the investment cost, energy consumption, and material consumption of the unit product. The second is to speed up the elimination of backward production capacity. For example, in the past few years, the polyester industry has eliminated more than 800,000 tons of low-efficiency, high-energy-consuming small polyester production capacity. Thirdly, some industries and enterprises with high environmental pressure will transform their production processes and accelerate technological research and development. For example, the spandex and acrylic fibers will be replaced with new solvent DMAC; the viscose industry will introduce and independently develop non-toxic spinning technology; and companies will use membrane technology to treat waste water. Can achieve zero emissions and so on. Fourth, the recycling of polyester bottles and tablets has been very effective. At present, the annual production capacity of recycled polyester staple fiber has reached more than 3 million tons. Regenerated polyester filaments and reclaimed bottle tablets have also been put into production. Fifth, superior enterprises implement refined management, improve product quality, and increase the recycling of bobbins, packaging materials, and waste silk.
Although in recent years the industry has achieved remarkable results in terms of energy saving and consumption reduction, “three wastes†treatment can achieve emission targets, but the industry still has many problems in environmental protection, such as energy conservation, clean production, environmental protection, and development and utilization of renewable raw materials. There is still a certain gap between developed countries and developed countries. The main performance is that the overall energy consumption level of the industry is 10%~30% higher than the international advanced level. Some wet spinning companies in the viscose, acrylic, vinylon, etc. industries still have some technological equipment that is relatively backward. In the aspect of “three wastes†governance, it still mainly stays at the terminal governance stage. There is not enough attention to source control and process monitoring, and there are few methods. The gap in the development and utilization of renewable raw materials is even greater. It is highlighted by the lag in the development of biomass engineering technology, slow progress in the development of new non-toxic spinning and biodegradable fiber technologies, and so on.
Since the 10th Five-Year Plan, the chemical fiber industry has increased its investment in energy conservation and emission reduction and achieved significant results. First, the localization of large-scale complete sets of technical equipment such as polyester, polyester, viscose staple fiber, and spandex significantly reduced the investment cost, energy consumption, and material consumption of the unit product. The second is to speed up the elimination of backward production capacity. For example, in the past few years, the polyester industry has eliminated more than 800,000 tons of low-efficiency, high-energy-consuming small polyester production capacity. Thirdly, some industries and enterprises with high environmental pressure will transform their production processes and accelerate technological research and development. For example, the spandex and acrylic fibers will be replaced with new solvent DMAC; the viscose industry will introduce and independently develop non-toxic spinning technology; and companies will use membrane technology to treat waste water. Can achieve zero emissions and so on. Fourth, the recycling of polyester bottles and tablets has been very effective. At present, the annual production capacity of recycled polyester staple fiber has reached more than 3 million tons. Regenerated polyester filaments and reclaimed bottle tablets have also been put into production. Fifth, superior enterprises implement refined management, improve product quality, and increase the recycling of bobbins, packaging materials, and waste silk.
Although in recent years the industry has achieved remarkable results in terms of energy saving and consumption reduction, “three wastes†treatment can achieve emission targets, but the industry still has many problems in environmental protection, such as energy conservation, clean production, environmental protection, and development and utilization of renewable raw materials. There is still a certain gap between developed countries and developed countries. The main performance is that the overall energy consumption level of the industry is 10%~30% higher than the international advanced level. Some wet spinning companies in the viscose, acrylic, vinylon, etc. industries still have some technological equipment that is relatively backward. In the aspect of “three wastes†governance, it still mainly stays at the terminal governance stage. There is not enough attention to source control and process monitoring, and there are few methods. The gap in the development and utilization of renewable raw materials is even greater. It is highlighted by the lag in the development of biomass engineering technology, slow progress in the development of new non-toxic spinning and biodegradable fiber technologies, and so on.
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