Yizheng Chemical Fiber Company releases the first public announcement of the Environmental Impact Assessment Report for the \"Project on Controlled Preparation of Green Bio-based PO3G and Development of High-Performance PO3G-PTT Elastomer Products\"

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Recently, Yizheng Chemical Fiber Company released the first public announcement of the Environmental Impact Assessment Report for the \"Project on the Controlled Preparation of Green Bio-based PO3G and the Development of High-Performance PO3G-PTT Elastomer Products\". In accordance with the requirements of the \"Measures for Public Participation in Environmental Impact Assessment\", Order No. 4 issued by the Ministry of Ecology and Environment, the relevant information regarding the first public announcement of the Environmental Impact Assessment Report for the \"Project on the Controlled Production of Green Bio-based PO3G and the Development of High-Performance Elastomer Products Based on PO3G-PTT\" by Sinopec Yizheng Chemical Fiber Co., Ltd. is hereby made public as follows: Project name: Project on the Controlled Production of Green Bio-based PO3G and the Development of High-Performance Elastomer Products Based on PO3G-PTT by Sinopec Yizheng Chemical Fiber Co., Ltd.; Location of construction: Within the premises of Sinopec Yizheng Chemical Fiber Co., Ltd.; Project overview: A polyester production line with an annual capacity of 5,000 tons will be built; the main product is PTT, and it is possible to produce a variety of high-viscosity copolyesters flexibly. Brief introduction to the project for the controlled preparation of green bio-based PO3G for the development of high-performance PO3G-PTT elastomer products: Yizheng Chemical Fiber Company is a production base for mid-to-high-end polyesters as well as special fibers under Sinopec. The company currently has 1 PTA unit with an annual production capacity of 3 million tons ； 20 polyester production lines, 6 bottle-grade chip production lines, and 56 polyester staple fiber production lines; the total polyester production capacity (including polyester chips, staples, hollow fibers, and bottle chips) is 3.1 million tons per year ； 4 sets of high-performance polyethylene fiber dry spinning units, with a production capacity of 3,300 tons per year; 1 set of para-aramid unit, with a production capacity of 1,000 tons per year ； 1 set of 1,4-butanediol (BDO) production facility, with a malic anhydride production capacity of 120,000 tons per year ； 12 polypropylene melt-blown non-woven fabric production lines, with a capacity of 6,000 tons per year ； 4 sets of PBT production lines, with an annual production capacity of 260,000 tons. The R&D capabilities of the Research Institute of Yizheng Chemical Fiber Company are a key factor in the adjustment of Yihua Company’s product portfolio and the upgrading of the aromatic hydrocarbons industry chain. With the growth of new technologies, new materials, and emerging demands, there is an urgent need to acquire new research and development equipment. In particular, advanced scientific research equipment is still lacking in areas such as pilot-scale polymerization of new polyester materials, evaluation of the unconventional properties of polyesters, and post-processing applications. To meet the demands for the development of high-end polyester materials, scientific research equipment has been upgraded to create more comprehensive hardware facilities for such development, in order to support the product structure adjustment of Yihua Company and to help establish a model base for the downstream aromatic chemicals industry within Sinopec. The polymerization units currently available in the R&D institute of Yizheng Chemical Fiber Company are unable to meet the requirements of reactors for high-performance, high-viscosity, low-MFI modified composite materials, nor can they satisfy the needs related to pelletizing at a low crystallization rate ； The research institute lacks development facilities for scaling up processes from pilot scale to industrial production lines, and there is a shortage of platforms for developing new product manufacturing processes. The existing continuous processing units in the operation department have excessive capacity, making them unsuitable for the first-time industrial production of high-value materials or for the commercialization of products produced in ton quantities. Therefore, the company will leverage its many years of construction experience, advanced technologies and management expertise, the R&D capabilities of its research institute, its existing land and facilities, as well as its abundant utility resources. It is planned to establish this project in the company’s First Synthetic Fiber Department as a pilot-scale production facility. It will be primarily used for the development of new polyester products and key processes in continuous polymerization, as well as for scale-up tests to facilitate the transition from research and development to industrial production. This facility will help to finalize the formulas, processes, and performance characteristics of these new products, reduce the risks associated with large-scale production, and enable the production of high-end polyesters that cannot be manufactured using existing facilities on a small scale, so that they can be tested by users and utilized for the promotion of new products. Construction content: A project for the controlled preparation of green bio-based PO3G and the development of PO3G-PTT high-performance elastomer products will be established. The total investment for this project is 45.2579 million yuan; with polytrimethylene terephthalate (PTT) as the representative product, the designed production capacity is 5,000 tons per year. Main raw materials: purified terephthalic acid PTA, 1,3-propanediol PDO, TiO2, TBT. The main production processes include: slurry preparation, catalyst preparation and supply, esterification, polycondensation, granulation, and other key steps.