High-quality polyester-grade ethylene glycol produced by the 300,000-ton per year ethylene glycol production project of Zhongyan Anhui Hong Sifang Co., Ltd. was successfully manufactured

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High-quality polyester-grade ethylene glycol was successfully produced in the 300,000-ton per year ethylene glycol production project of Zhongyan Anhui Hongsi Fang Co., Ltd. Author/Source: Huahua Network – Coal Chemical Industry. Date: October 10, 2018. Clicks: 66. At 18:08 on October 8, high-quality polyester-grade ethylene glycol was successfully manufactured as part of the 300,000-ton per year ethylene glycol production project of Zhongyan Anhui Hongsi Fang Co., Ltd. At 18:30 on September 30, the 300,000-ton ethylene glycol project of Zhongyan Hongsi Fang, with a total investment of 4.946 billion yuan, achieved full operational capacity and produced qualified crude ethylene glycol, marking the successful commissioning of the project. Starting from October 1, fluid was introduced into the ethylene glycol distillation system to establish a proper liquid level. After a week of fluid accumulation and adjustments to optimize various parameters, polyester-grade product was produced on October 8. The purity of this product reached 99.96%, with ultraviolet transmittance values of 91% at 220 nm, 99% at 275 nm, 100% at 350 nm, and 98% at 250 nm. These values meet and even exceed the latest standards for ethylene glycol, satisfying the highest requirements set by the polyester industry for polyester-grade ethylene glycol. At the beginning of April 2018, the project gradually entered the commissioning phase, and on April 26, the air separation unit produced oxygen and nitrogen of qualified quality ； On May 4, Boiler No. 4 was successfully ignited ； On May 12, the 2.4-kilometer public external pipe framework structure in the eastern and western zones was completed across its entire length ； On May 25, Boiler No. 5 was successfully ignited ； On July 14, the first booster was successfully commissioned and handed over for production ； Air separation unit started up on August 18 ； Charging of gasification material on August 27. From 11:00 on September 27 when the process was started, to 18:30 on September 30 when the product was produced, the Hongsi Fang Ethylene Glycol project managed to produce the product in just three days, setting a record for the fastest startup time among ethylene glycol production facilities in China. As of October 2, production at the facility is running smoothly; the amount of crude product has reached over 400 tons, with high-quality product expected to be available around October 4. The second phase of Sino Salt Hongsi Fang’s \"300,000 tons per year of ethylene glycol production from syngas, along with 50,000 tons per year of dimethyl carbonate production\" project officially commenced construction on July 30, 2015. More than 6,000 people were involved in the project’s construction, commissioning, and management tasks, including around 30 construction companies. The project is located in the Anhui Hefei Circular Economy Demonstration Park. It utilizes high-chemistry and Ube Industries’ syngas-based ethylene glycol production technology; it was designed by Donghua Technology, and employs the gasification process package from East China University of Science and Technology as well as the methanol washing process package from Dalian University of Technology.