The gasification framework and concrete structure of Shaanxi Yueneng Chemical Materials’ 400,000 tons per year ethylene glycol production project have been successfully completed

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The concrete framework of the gasification unit for Shaanxi Yueneng Chemical Materials’ 400,000 tons per year ethylene glycol production project was successfully completed. Author/Source: Gasification World. Date: 2021-09-17. Clicks: 11. On September 14, the concrete framework of the gasification unit for the first phase of Shaanxi Yueneng Chemical Materials’ 1.2 million tons per year ethylene glycol production project, which involves a capacity of 400,000 tons per year, was successfully completed. Li Zhengang, the company’s deputy general manager, Li Yucun, the deputy chief engineer, and representatives from various construction units attended the topping-out ceremony. The main body of the gasification framework is a reinforced concrete frame structure, with a steel frame structure on top. The total height of the reinforced concrete frame is 36.77 meters. Construction commenced on March 1 and was completed on September 14, taking 154 days in total. The amount of concrete used was 5,600 cubic meters, while 900 tons of steel were utilized. Project Overview: The first phase of the project, which involves the production of 400,000 tons per year of ethylene glycol, is part of Shaanxi Yulin Energy Group Co., Ltd.’s initiative to produce ethylene glycol on a scale of 1.2 million tons per year. This project is part of the development of a clean fuel production base and a high-end chemicals and materials production base in the Qingshui Industrial Park of the Yushen Industrial Zone. The total planned land area for this project is 1,711 mu. The estimated investment for the project is 6.243 billion yuan, with 532.6274 million yuan allocated to environmental protection measures. The construction period is expected to be 30 months, with completion and operation scheduled for June 2022. The first phase of Yulin Energy’s 400,000 tons per year ethylene glycol production facility uses coal blends as raw material, and Collins powder gasification is employed to produce crude syngas. The crude synthesis gas is divided into two streams after entering the shift reactor. One of these streams undergoes heat recovery before being sent to low-temperature methanol washing to remove sulfur and CO2 impurities; the purified synthesis gas is then subjected to deep cryogenic separation to produce CO, which is used in the ethylene glycol production facility. The hydrogen-rich gas obtained from deep cryogenic separation is sent to a pressure swing adsorption unit for H2 extraction ； Another stream of crude syngas undergoes two stages of isothermal shift reaction, after which it is sent to low-temperature methanol washing to remove sulfur and CO2 impurities. It then enters the PSA-H2 unit together with the hydrogen-rich gas obtained through cryogenic separation, to produce H2 for use in the ethylene glycol plant. Ethylene glycol synthesis is a technology of Zhongke Yuandong. Dimethyl oxalate (DMO) is synthesized from CO via an oxidation coupling reaction, and ethylene glycol is produced by the hydrogenation of DMO. The project scope includes a gasification unit, a purification unit, an H2/CO separation unit, and an ethylene glycol production unit, among others. The utility systems and supporting auxiliary facilities include: 3×350t/h high-temperature and high-pressure circulating fluidized bed boilers + 2×30MW back-pressure steam turbine generator sets, air separation units, circulating water stations, desalination stations, storage and transportation facilities, sewage treatment plants, etc. The gasification unit employs the Collin powder gasification technology and includes 2 powder gasifiers ； The ethylene glycol plant utilizes the Sino-Far East ethylene glycol technology.