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Latest Progress on the Completion Works for the First Phase of Shaanxi Yanchang China Coal Yulin Energy Chemical Project – Author/Source: Huahua Net Coal Chemicals; Date: 11-08-2019; Clicks: 51. Another wave of installation activities is underway for the plant’s system infrastructure. As the completion works for the first phase of Shaanxi Yanchang China Coal Yulin Energy Chemical Co., Ltd. (the Yanchang Jingbian Phase II project), which are under the general contracting of Beijing Petrochemical Engineering Co., Ltd., progress steadily, the plant’s process pipelines and external heating pipes represent the main components of this system project. The total weight of the steel structures for these external pipes is over 14,000 tons. Apart from the areas designated for lifting large components, all other parts have been installed. The total internal diameter of all the external pipes in the plant is around 500,000 inches; so far, 240,000 inches have been completed. In the newly built plant area, pressure testing has been carried out on 3 sections of the R-pipe corridor. The external pipes of the entire plant rely on the external pipe galleries from Phase 1; new R, S, T, U, V, and W galleries have been constructed, and one to two additional layers of pipe racks have been added to the existing A, D, E, F, G, H, J, K, L, M, 191G, 10C, and 168BC galleries. This arrangement connects various production units and auxiliary facilities within the plant, as well as the old plant area with the new one, thereby ensuring the normal operation of the factory. Given the enormous amount of welding work involved in the external pipe gallery, there are currently over 210 welders on site, with another 1,200 workers assisting. All those involved are highly motivated, which provides a solid foundation for meeting the critical deadlines of this installation project. With the arrival of the fourth quarter, temperatures at the site gradually drop, and construction is about to enter the winter period. The project team has already prepared winter construction plans for various specialties, while also addressing properly the integration with other systems as well as the overlapping construction activities among different specialties, in order to ensure efficient progress in project construction, safe and stable work, and to meet the milestone goal of having all plant processes and external heating pipelines ready for handover by December 21st. 15 high-pressure nitrogen cylinders installed for the LDPE/EVA units. On November 3, all 15 high-pressure nitrogen cylinders within the frames of the high-pressure nitrogen cylinders for the LDPE/EVA units in the first-phase completion project of Yulin Energy Chemical were installed and aligned. The on-site construction supervisor said that this means the installation of equipment within the high-pressure nitrogen cylinder frame of the device is essentially complete. It is stated that high-pressure nitrogen tanks are one of the key equipment in LDPE/EVA plants; each one weighs 10 tons, with an operating pressure as high as 30 Mpa. A total of 15 high-pressure nitrogen tanks were installed this time; 3 of them are used for replacing the reactor, enabling emergency shutdown of the plant, and clearing the product lines, while the other 12 are used for emergency injection into the degassing chamber. Given the high design pressure, large size of this equipment, and the high precision requirements for its installation, the owner, general contractor, supervisor, and lifting company developed strict lifting plans and equipment protection measures in advance. Instructions for proper protection were also indicated on the equipment itself to prevent accidental operation by personnel. During the lifting process, the relevant personnel followed the principle of focusing on safety, quality, and progress simultaneously, and carried out the assigned tasks strictly in accordance with the plan. The electrical installation of the PP3 unit at Yulin Energy Chemical Plant is progressing steadily. Recently, the primary acceptance testing for the main electrical equipment of the substation in this 400,000-ton/year polypropylene plant (hereinafter referred to as the “PP3 unit”), which is part of the first-phase completion project at Yulin Energy Chemical Plant and was EPC-contracted by Beijing Petrochemical Engineering Co., Ltd., was completed. The electrical installation phase of the unit has now entered the next stage, namely cable laying and wiring commissioning, with significant progress being made in the electrical installation work during the fourth quarter. The installation of the electrical cabinets is nearly complete. The electrical system of the PP3 unit consists mainly of 10 transformers, 137 panel cabinets, 23 kilometers of cable running between cabinets, 6.6 kilometers of cable trays, and 198 kilometers of external cables. The substation within this unit supplies power to the mechanical equipment and lighting systems in various areas through main ducts. The external cable trays are being installed one after another. At present, the preliminary work by related specialties (civil engineering, steel structure) has been largely completed. The installation of electrical cable trays and cables is now in a critical phase of this major installation campaign. The project team is taking measures to strengthen technical briefings prior to work, ensure proper protection of the cables once they are installed, and address the requirements and precautions specific to winter conditions. By making use of the limited time available before winter, in line with the deadlines set for this installation campaign, the team is working tirelessly to ensure the successful achievement of the annual goals. The completion and filling work for the first phase of the Shaanxi Yanchang China National Coal Yulin Energy and Chemical Co., Ltd. project (the Yanchang Jingbian Phase II project) is scheduled to be carried out from September 19 to December 31, with intensive installation efforts aimed at ensuring the successful achievement of all annual construction goals. Overall goal of the installation campaign: Completion of steel structure installation ； 80% of equipment installation completed ； 70% of pipeline installation completed ； Cable laying is basically complete ； The air separation unit and auxiliary facilities are generally ready for commissioning ； The regulation reservoir and Jinchisha water supply improvement project have been basically completed. The completion and improvement project for the first phase of Shaanxi Yanchang China Coal Yulin Energy Chemical Co., Ltd. (Yanchang Jingbian Phase II project) involves an investment of 14.413 billion yuan. Using coal and natural gas as raw materials, this project aims to build an integrated facility capable of producing 1.8 million tons per year of methanol, 600,000 tons per year of methanol-to-olefins products, 400,000 tons per year of polypropylene, and 300,000 tons per year of low-density polyethylene/ethylene-vinyl acetate copolymer (LDPE/EVA). The project is scheduled to be put into operation in the second half of 2020. Once operational, Yueneng Chemical’s polyolefin production capacity will reach 1.9 million tons per year, making it the largest polyolefin production project in Shaanxi Province at present. As of October 24, the projects launched in Phase 1 had produced a total of 1.000164 million tons of polyolefin products on an annual basis, successfully exceeding the 1-million-ton mark. This is also why Yulin Petrochemical’s polyolefin production has exceeded 1 million tons for four consecutive years.