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Shaanxi’s 600,000-ton coal-to-olefins plant resumed full operation after major maintenance and technical upgrades. Author/Source: Huahua Network – Coal Chemicals. Date: July 4, 2018. Clicks: 3. On July 1, the 300,000-ton/year HDPE production unit in the Yuenenghua Jingbian Energy Chemical Park’s project for comprehensive utilization of coal, oil, and gas resources was successfully brought online, producing qualified polyethylene products. Thus, after completing the major maintenance and technical upgrades, all production units of Shaanxi Yanchang China National Coal Group Yulin Energy Chemical Company have resumed operations and are now functioning normally. It is reported that from the gradual shutdown of various production units for maintenance, to the point where both the operation rate and completion rate exceeded 50%, and finally to the successful production of qualified products by the last unit, Yueneng Chemical completed over 2,600 maintenance, repair, and technical improvement projects within just one month during this major maintenance and restart process. These projects included modifications to the DCC units, maintenance of the reaction gas compressors in the DMTO unit, maintenance of the propylene refrigeration compressors, as well as the removal and replacement of catalysts in the methanol synthesis towers. On June 23, the DMTO unit of the first-phase project for comprehensive utilization of coal, oil, and gas resources in the Yuenenghua Jingbian Energy Chemical Park was restarted successfully after a shutdown for maintenance, producing qualified products from the very first operation. At around 19:20 on June 22, the methanol complex at Yulin Energy Chemical Plant successfully produced MTO-grade methanol after completing its major maintenance, 26 hours ahead of schedule, marking the full commissioning of the methanol complex. Shaanxi Yanchang China Coal Yulin Energy Chemical Co., Ltd. is located in the Jingbian Energy Chemical Park in Yangqiaopan Town, 10 kilometers northeast of Jingbian County town. The company was established in May 2010, jointly funded by Yanchang Petroleum Group and China National Coal Energy Group Co., Ltd. Its registered capital is 7 billion yuan, with Yanchang Group holding 70% of the shares and China National Coal Energy Group holding 30%. The first-phase project for the comprehensive utilization of coal, gas, and oil resources in the Jingbian Energy Chemical Park is the world’s first integrated facility that uses coal, gas, and oil as raw materials to produce olefins. The projects include 1.8 million tons per year of methanol, 600,000 tons per year of DMTO, 1.5 million tons per year of residue catalytic thermal cracking (DCC), 300,000 tons per year of high-density polyethylene (HDPE), 300,000 tons per year of low-density polyethylene (LLDPE), 2 × 300,000 tons per year of polypropylene plants, 90,000 tons per year of MTBE, and 40,000 tons per year of butene-1 plants, with an estimated total investment of 27 billion yuan. The successful implementation of the first-phase project for the comprehensive utilization of coal, oil, and gas resources in the Jingbian Energy Chemical Park has provided Yanchang Petroleum Group with great confidence and motivation to further expand into the coal chemical industry and to adjust the structure of its coal, oil, and gas-related operations. This has led the group to decide to invest an additional 14 billion yuan during the 13th Five-Year Plan period to complete and improve the first-phase project for the comprehensive utilization of coal, oil, and gas resources in Jingbian. In 2017, the completion and improvement project officially commenced construction on September 8, provided that the preliminary feasibility studies, the necessary approval procedures, the process packages, and the basic design were completed on schedule. The total investment in the project is approximately 14.413 billion yuan. Using coal and oil field gas as raw materials, and building on the mature technical expertise gained from the first phase of the Yulin Energy Chemicals project, the facility will be constructed to produce 1.8 million tons of methanol per year, 600,000 tons of methanol-to-olefins products, 300,000 tons of LDPE/EVA integrated products, and 300,000 tons of PP products, all while making full use of existing infrastructure. It is planned to be basically completed by the end of 2019 and put into operation in 2020.