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The installation of Frame 1 and Frame 2 of the wash tower in the styrene-butadiene rubber unit of the Dushanzi Petrochemical VOCs project was completed efficiently. On April 10, 2025, Frame 1 and Frame 2 of the wash tower in that unit were successfully installed as part of the upgrade project for online monitoring of VOCs emissions and flue gas; the installation of the steel structures was finished a week ahead of schedule, laying the foundation for subsequent work. It is reported that the frame dimensions of the washing towers 1# and 2# to be lifted this time are 2.3m×4m×16m (net weight 11.5t) and 2.1m×4m×17.9m (net weight 12.7t), respectively. To ensure safe and efficient construction, the project team planned in advance and made thorough arrangements; taking into account the actual conditions on site, it was decided to use a QY100K5 type 100-ton all-terrain crane as the main lifting device, along with a QY100K5 type 100-ton truck crane for assisting with the lifting process. By accurately calculating the lifting points and positioning parameters, the lifting task was successfully completed. To ensure the safety of lifting operations and the smooth progress of construction, the project team maintained active communication with the manufacturing plants and designers during the prefabrication phase at the factory, accurately calculated the loads, inspected the transportation routes on site, and scientifically determined the degree of prefabrication required. Before carrying out the lifting work on site, detailed technical and safety instructions are provided to the workers to ensure that the entire lifting process is carried out in accordance with the plan ； Strictly implement the system of \"one person as chief commander and multiple people for monitoring\"; lifting can only proceed after inspection and signature confirmation by all parties involved. In the construction of this steel structure, a process of factory prefabrication followed by on-site modular installation was employed, which significantly improved construction efficiency, reduced the project duration and the need for work at heights, greatly diminished construction safety risks, and enabled the precise and efficient lifting of the washing tower frame. The successful completion of this lifting operation for the washing tower frame is not only the result of the joint efforts of all personnel from the project team who were involved in the lifting process, but it also represents a successful example of the project team’s implementation of the company’s initiatives aimed at achieving \"standardized design and modular construction\" as well as compliance with the company’s \"Plan for Improving Engineering Quality Management\". It provides valuable experience that can serve as a reference for similar projects in the future. Next, the project team will adhere to the working principle of \"maintaining enthusiasm to keep up with the schedule and striving for excellence in quality,\" and continue to deliver outstanding results.