The 110kV main substation of Yulin Kaiyue Coal Chemical’s 500,000 tons per year methanol-to-ethanol project in Shaanxi Yan’an Petroleum has successfully received its power supply for the first time

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Recently, good news came from the 500,000 tons per year methanol-to-ethanol project of Shaanxi Yanchang Petroleum Yulin Kaiyue Coal Chemical Co., Ltd. – with the completion of the final operational instruction, the 110kV main substation was successfully powered up for the first time. This breakthrough at this critical stage has laid a solid foundation for subsequent tasks such as power supply to various equipment and substations, individual testing of the equipment, and the illumination of the entire plant. The two 110kV power supplies for the main substation are derived from the existing 110kV dual-bus system of the old plant. The newly built substation is equipped with four functional areas: an electrical cabinet room, a low-voltage distribution room, a 10kV capacitor distribution room, and a high-voltage distribution room ； It is equipped with 2 110/10 kV, 40 MVA main transformers, 110 kV GIS switchgear, capacitor compensation cabinets, EPS (Emergency Power Supply System) and UPS (Uninterruptible Power Supply System) and other equipment. At its core, it features an integrated cabinet that combines a comprehensive automation system, a visualization interface for error prevention, and communication functions, enabling integrated management of control, protection, communication, and error prevention. This design simplifies the structure of the secondary systems, improves operational efficiency, and ensures the safety of power grid operations, providing essential support for the \"unmanned\" operation and \"efficient maintenance\" of smart substations. To ensure a successful power connection, the project construction command team actively coordinated with the technical personnel from all participating parties, held numerous discussions on technical details, and carried out repeated adjustments and inspections of the power connection plan, overcoming difficulties such as high voltage levels, complex equipment installation, high technical requirements, and great construction challenges. At the same time, safety and technical instructions are provided to the operators, data is checked repeatedly, and strict control is exercised at every stage. On the day of power reception, personnel in various positions performed their duties accordingly; from conveying instructions, conducting equipment inspections to monitoring parameters, everything was carried out smoothly, accurately, and efficiently, thus accelerating the progress of the project. Next, the project construction command center will continue to focus on completing the power supply connection for the public auxiliary distribution room and the ethanol substation, ensuring \"zero error\" standards during the subsequent installation and testing of equipment, thereby providing strong impetus to accelerate the project’s progress and improve its efficiency. The site for Shaanxi Yanchang Petroleum Yulin Kaiyue Coal Chemical Co., Ltd.’s 500,000 tons per year methanol-to-ethanol project is located on the industrial land reserved within Kaiyue Coal Chemical’s existing facility, with no additional land required. The project utilizes the DMTE methanol-to-ethanol process technology developed by the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, which holds independent intellectual property rights. It involves modifying existing shift and purification units, and expanding the facility by using the excess syngas and methanol available from those units. The main components of the project construction include: a raw material separation unit, a dimethyl ether synthesis unit, a carbonylation unit, a hydrogenation and product separation unit, tank areas and loading/unloading areas, as well as auxiliary and utility systems. In addition, sulfur warehouses, hazardous waste temporary storage facilities, and chemical storage areas will also be relocated and rebuilt. The total investment for the project is 2,634,321,800 yuan. Beijing Petrochemical Engineering Co., Ltd. is responsible for the EPC project of the main units in Section 1, which includes the ethanol plant (including the gas separation unit). Hualu Company is in charge of the EPC project for the systems in Section 2, which encompasses plant modifications, overall system installations, auxiliary production facilities, logistics facilities, and water treatment systems.