All individual tests of the motors in Unit 4 of the ethylene production facility in Tarim’s 1.2 million tons per year Phase II ethylene project have been successfully completed

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Recently, with the ethylene compressors and propylene compressors of the ethylene plant shutting down smoothly one after another, all individual tests of the motors in Unit 4 of Tarim’s 1.2 million tons per year Phase II ethylene project were successfully completed. This marks the successful activation of the core \"heart\" of this major industrial facility, endowing it with strong power; it serves as a catalyst for carrying out subsequent key tasks such as aligning the motors and gearboxes of the four units in the ethylene plant, inspecting the bearing shells, installing instrument probes, conducting individual tests on the gearboxes, and performing pressure testing on the remaining pipelines. As China’s first million-ton-class fully electric ethylene production project, this single-test task is extremely challenging. Faced with challenges such as large-scale equipment, numerous interdisciplinary elements, frequent interface interactions among multiple suppliers, complex control logic, and the lack of established precedents, the project team took on a strong sense of responsibility to establish robust safeguards for both safety and quality. During the preparation phase, detailed plans were developed in advance for mechanical, process, electrical, instrumentation installation, and commissioning. Weekly coordination meetings were held to oversee progress from all aspects, address any obstacles that arose, and ensure that responsibilities were assigned to specific individuals and covered every stage of the process. In close cooperation with the supervision unit, strict quality control was maintained, with particular attention paid to key processes such as the testing of 35kV switchgear, phase-shifting transformers, and frequency conversion systems, as well as the fabrication of cable terminals and the calibration of instrument interlocks. Through joint inspections by multiple parties and thorough investigations, a list of issues was compiled, and these issues were addressed in a systematic manner to ensure that all conditions for commissioning were met perfectly. Before the trial run, to ensure that the oil quality met high standards, the project team made every effort to carry out chemical cleaning of the lubricant system pipelines as well as oil transportation, thereby providing the motor bearings with lubrication of \"top-tier\" quality. To meet the requirements for utility supply, the construction of temporary water lines and instrument air lines for the motors was accelerated, thereby establishing the \"lifeline\" for testing in advance. During the electrical and instrumentation commissioning phase, joint commissioning of electrical and instrumentation systems is planned in advance, with a focus on the high-voltage frequency converters specific to fully electric drive units. It is precisely this work style of \"strictness, meticulousness, and practicality\" that ensured that key parameters such as starting inrush current, bearing temperature rise, and vibration levels remained within optimal ranges throughout the process, thereby enabling the successful achievement of the goal of a \"successful first test run\". The early completion of the individual motor test is of great significance. Adhering to the working principle of the Command Center for the commissioning of Phase II of the tower, which emphasizes trying everything possible and completing tests as early as possible, the project team moved up the schedule for starting individual motor tests from the originally planned date in early March to January 7th. This proactive deployment provided sufficient time for subsequent tasks such as air no-load testing of the four units, air purging of the pyrolysis gas, operation of the ethylene and propylene units with air, as well as parameter tuning of the frequency converters and optimization of the control logic. The successful operation of the motor not only verified the reliability of the core equipment but also paved the way for subsequent key steps such as individual testing of the gearbox, stress-free piping, overall alignment of the unit, and reinstallation of the couplings. Currently, the ethylene project of Phase II of the tower has entered a critical stage where construction completion and preparation for commissioning are carried out in parallel. The project team will continue to prioritize safety standards during winter construction, maintain strict quality control, focus on the key tasks of large-scale equipment installation, commissioning, and testing, and enhance on-site supervision and management. By adopting a rigorous, meticulous, and practical approach, they will ensure that the project is completed safely, with high quality, and efficiently.