Single-unit trial operation of the first high-pressure motor in the polypropylene unit of the Tarim 1.2 million tons/year Phase II ethylene project

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On January 8, the first high-pressure motor of the polypropylene unit in the 1.2 million tons per year Phase II ethylene project at Dushanbe Petrochemical Company, which is under the responsibility of the Tarim Polypropylene Project Department of the Fourth Branch, was successfully tested on a single-unit basis. All technical parameters met the requirements specified in the design standards, indicating that the power core system of this unit is now ready for operation. This lays a solid foundation for the smooth progress of subsequent joint testing of the process equipment. It is reported that the high-voltage motors undergoing single-unit trial operation this time (including 4 motor units for jacketed water pumps and 2 motor units for circulation water pumps) are key components of the core power equipment system in the polypropylene plant. They feature high power levels and strict technical specifications, and their operational stability is directly related to the smooth commissioning of the subsequent polymerization reaction system. To ensure the safety, controllability, and successful completion of the single-unit trial operation, at the early stage of this process, the project department took the lead in forming a joint inspection team comprising the supervision unit, equipment manufacturers, and the owner’s party. This team carried out multiple rounds of specialized inspections and verifications on key aspects such as the precision of motor installation, insulation performance, and electrical protection circuits ； Party member task forces were organized to concentrate their efforts on overcoming difficulties and breaking down tasks into specific steps, thereby addressing technical and construction management challenges one by one. The established trial operation plans and safety management procedures were strictly followed, and various safety and technical risks were identified and eliminated, providing a solid foundation for the successful completion of the single-unit trial operation of the high-voltage motor. During the single-unit trial operation phase, this high-voltage motor achieved a successful start-up once under no-load conditions. After 4 hours of continuous no-load operation testing, key operational parameters such as motor vibration, temperature rise, and noise all met the preset control standards. The real-time monitoring system showed a stable and continuous operation curve, thereby fully verifying the reliability and stability of both the motor’s installation quality and the performance of the equipment itself. The successful single-unit trial operation of the first high-voltage motor has provided strong momentum for the smooth commissioning of the entire project. Next, the project team will carry out the various tasks related to the individual trial operations of the subsequent units in an orderly manner, work together to overcome the challenges associated with construction, and make every effort to ensure that the project is put into operation on schedule and to a high standard.