Optimization and Improvement Project for 200,000 tons/year Polystyrene Production at Shandong Heze Yuhuang Chemical Co., Ltd

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Recently, the public notice for the acceptance of the environmental impact assessment for Shandong Heze Yuhuang Chemical Co., Ltd.’s 200,000 tons per year polystyrene product improvement project was issued; the period for collecting opinions is from February 27 to March 11, 2026 (10 working days). 【Basic Project Information】 Project Name: Optimization and Upgrade Project for 200,000 tons/year Polystyrene Products Construction Location: Within the existing plant of Shandong Heze Yuhuang Chemical Co., Ltd. Nature of Construction: Technical renovation Scale of Construction: This project involves technical renovations to the two existing polystyrene production lines, resulting in a production capacity of 174,000 tons/year after the renovations. The two 100,000-ton polystyrene production lines prior to the technical upgrade have been modified to consist of one line for producing styrene-methacrylate copolymer (MS) resin, with a production capacity of 75,000 tons per year and an annual operating time of 8,000 hours ； Another line produces polystyrene (PS) resin and styrene-maleic anhydride copolymer (SMA) resin, with a PS production capacity of 90,000 tons per year and 7,200 hours of annual operation time ； The SMA production capacity is 9,000 tons per year, with 800 hours of operation per year. After the project is completed, the production volume will decrease by 26,000 tons. Main technical renovation aspects of this project: This project aims to carry out technical renovations on the existing polystyrene plant in order to increase the variety of products, while keeping the total production capacity unchanged. Leveraging existing production facilities and auxiliary equipment, it makes use of about 184 units of equipment such as reaction vessels, degasifiers, and vacuum pumps. The main changes are as follows: ① The production capacity has been changed from 200,000 tons per year of polystyrene before the technical upgrade to 90,000 tons per year of polystyrene, 75,000 tons per year of MS resin, and 9,000 tons per year of SMA resin. ②Approximately 6 sets of equipment, including unloading facilities, storage tanks, and transfer pumps for methyl methacrylate and maleic anhydride, have been added; the technical renovation project requires an additional area of about 0.8 mu. Project investment: 175.79 million yuan; environmental protection investment: 500,000 yuan, accounting for 0.28% of the total investment. Construction period: 2 months; expected completion date: June 2026