[Haichuan Chemical Salary News] The first phase of Shaanxi Yueneng’s coal-based ethylene glycol production facility, with an annual capacity of 1.2 million tons, has begun operations at a capacity of 400,000 tons per year
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On May 2, the groundbreaking ceremony for the first phase of Shaanxi Yueneng Chemical Materials Co., Ltd.’s project to produce 1.2 million tons per year of ethylene glycol, specifically the 400,000 tons per year production facility, was held in the Qingshui Industrial Park of the Yushen Industrial Zone. This event marked the start of the full-scale construction of the ethylene glycol production project, with construction now entering a substantive phase. The 400,000 tons per year ethylene glycol project is one of the initial projects undertaken by Yueneng Group in the coal-based clean fuel base and high-end chemical materials base located in the Qingshui Industrial Park of the Yushen Industrial Zone. The total planned land area for this project is 1,711 mu, with an estimated investment of 5.887 billion yuan; the construction period is 30 months, and completion and operation are scheduled for June 2022. The launch of this project is an important measure taken by Yueneng Group to address the weaknesses in its chemical industry, adjust its industrial structure, establish a strategic development framework focused on transformation and upgrading, and accelerate the progress of industrial transformation and improvement.
Project type: New construction. Owner: Shaanxi Yulin Energy Group Co., Ltd. Location: Qingshui Industrial Park, Shenmu County, Yulin City. Project investment: 5.86 billion yuan; environmental protection investment: 532.6274 million yuan, accounting for 9.1% of the total project cost. Land area: Total land area is 1,711.05 mu, with a net land area of 1,486.50 mu. Construction contents: Include gasification units, purification units, H2/CO separation units, ethylene glycol production units, etc. 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.
Process route: The project uses blended coal (Caojiatan coal and Longde coal) as raw material, and employs the Collin powder gasification technology to produce crude syngas. After entering the conversion unit, the crude syngas is divided into two streams; one stream of crude syngas undergoes heat recovery before being sent to low-temperature methanol washing to remove sulfur and CO2 impurities. The purified syngas is then subjected to deep cryogenic separation to yield 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 sulfur and CO2 impurities are removed through low-temperature methanol washing, it is combined with the hydrogen-rich gas obtained through cryogenic separation and fed into PSA-H2 to produce H2 for use in the ethylene glycol plant. Part of the desorbed gas from PSA-H2 is returned to the CO cryogenic tank under pressure, while the remaining small portion enters the fuel gas network for use as fuel.
Yulin has unique advantages for the development of coal chemical industry; I’m not sure how water resources will be ensured. Those who know about this could share their thoughts!