Lifting of 10 blending silos for the 400,000-ton polypropylene unit in Inner Mongolia Rongxin Chemical’s 800,000-ton olefin project

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On November 30, after three days of continuous efforts, all 10 mixing silos (32300-D-0901A-J) for the 400,000-ton/year polypropylene unit of the 800,000-ton/year olefin production project at Inner Mongolia Rongxin Chemical Co., Ltd., which was under EPC general contracting by a consortium formed by the company and Daqing Petrochemical Engineering Co., Ltd., were successfully installed. This marks the official entry of the project into the equipment installation phase, laying a solid foundation for the subsequent work such as the installation of process pipelines and electrical instruments. It is reported that each of the 10 blending silos to be lifted this time is 28 meters high, 8 meters in diameter, and weighs 30 tons; the elevation of the foundation supports on which they will be placed is 16.4 meters, and the lifting range required is 30 meters. In the face of the challenges posed by the large size of the equipment and stringent requirements for operational parameters, the Party branch of the project department has consistently integrated Party building into the entire process of construction and production, providing strong political support for overcoming the difficulties associated with the project. The party branch established a technical task force led by party members and cadres, which conducted repeated evaluations and optimizations through various methods such as 3D simulations and on-site surveys. Ultimately, the \"double-crane lifting and delivery method\" was adopted – a system in which a 500-ton truck crane serves as the main crane while an 80-ton truck crane acts as the auxiliary crane. This approach overcame the technical challenges posed by limited space and insufficient site conditions, providing a solid guarantee for the safe and precise placement of the equipment. To ensure the safe and efficient progress of the lifting operations, the project team took the initiative to work together with the client, the silo manufacturer, and the supervision agency to hold specialized seminars. Multiple rounds of review and optimization were carried out regarding the planning of equipment transportation routes and the design of lifting procedures, with responsibilities assigned at each stage and measures refined accordingly. Party members and cadres took the initiative to take charge of the operations, coordinating the resolution of various obstacles that arose during the transportation of equipment. They organized the replacement of the soil in the site where lifting operations would take place and conducted special tests to assess its load-bearing capacity, thereby establishing a solid safety framework to ensure the smooth progress of the lifting work. During the lifting process, the project team focused on precise control throughout the entire procedure. A real-time monitoring system was installed at the work site to dynamically monitor key aspects such as the lifting posture of the equipment, the stress on the lifting points, and its real-time movement trajectory, thereby eliminating safety risks such as deviation and tilting at their source. The personnel in various roles, including the ground command team, the aerial operation team, and the lifting operation team, have clear responsibilities and work together in coordination. By using standardized command signals and real-time communication via walkie-talkies, they ensure smooth information flow, thereby establishing a working system characterized by party members taking the lead, close cooperation between staff and the public, and efficient coordination – all of which provide comprehensive support for the safe and smooth progress of lifting operations.