Latest developments on the styrene-butadiene rubber unit of the Tarim 1.2 million tons/year Phase II ethylene project
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On March 17, at the construction site of the styrene-butadiene rubber unit for Tarim’s 1.2 million tons per year Phase II ethylene project, over 400 company employees struck the \"battle drums of spring\" to make every effort to meet the goal of achieving 100% soil-free operation by April 30, thus accelerating the progress of the project construction. The butadiene rubber plant consists of production units, auxiliary production units, and auxiliary facilities. The production units mainly include: chemical preparation, solvent purification, butadiene purification, polymerization and blending, stripping, and post-treatment. The auxiliary production units of the plant mainly include: liquid tank areas, refrigeration stations, low-pressure exhaust/torch venting systems, and utility/seal oil systems. The auxiliary facilities of the installation mainly include: the on-site cabinet room of the installation and the regional substation. The total weight of the steel structure installed in this device is 5,952.5 tons ； The underground pipeline is 15 kilometers long, with diameters ranging from 60 millimeters to 1400 millimeters. In accordance with the project owner’s specified milestones, the project team must carry out a large amount of land grading and hardening work within just over a month, to ensure that the construction site meets environmental and safety standards. Without affecting the installation schedule of the steel structure, the project team promptly carried out comprehensive planning, carefully outlining the construction sequence and key deadlines for each area. They overcame challenges such as numerous construction steps and interdisciplinary coordination by adopting a plan that involved constructing the branch pipelines first, closely linking land leveling and hardening, and prioritizing the installation of steel structures in areas that were not affected, while carefully planning each stage of the process. To date, 95% of the work related to groundwork construction has been completed. The project team is organizing tasks carefully and managing them strictly, striving to finish the remaining work related to the auxiliary groundwork elements, such as those resulting from delayed drawing delivery and material arrival, while ensuring that the installation of the steel structure progresses as scheduled.
At 17:17 on March 28, with the final anchor bolt tightened, the first degassing tower for the styrene-butadiene rubber unit of the Tarim Phase II ethylene project was installed in place. This achieved a 100% success rate for the first welding attempt, as well as 100% compliance with the requirements regarding the density of the insulation layer. The degassing tower has a diameter of 3.9 meters, a height of 42.9 meters, and a weight of 90 tons; it was delivered to the site on March 22. Faced with challenges such as tight deadlines, numerous overlapping tasks, and high technical requirements, the project team completed three key preparations in advance: refining the technical standards for various processes such as lifting, welding, and insulation ； Leveraging the digital management platform for smart construction sites, key materials such as pipes and lighting fixtures are tracked to ensure that \"the equipment is ready for use as soon as it arrives\" ； By adopting the approaches of \"simultaneous insulation construction and prefabricated pipeline installation\" as well as \"interleaved electrical installation\", the project timeline is reduced by over 30%. During the installation process, the project team developed a plan on an hourly basis to launch a \"multi-dimensional\" construction campaign: simultaneously carrying out the positioning and calibration of the tower structure as well as submitting applications for the approval of the scaffolding setup ； Install the process pipelines in a “modular” manner, in segmented sections ； The piping and wiring for the lighting system are integrated seamlessly with the installation of the galvanized iron external insulation layer and the anti-corrosion treatments. The project team established Party member commando teams and youth pioneer posts to work in shifts day and night. By using modeling to simulate construction challenges and applying 4D pipeline welding management to improve the quality of construction processes, it was possible to achieve the target of having the process pipelines, platform ladders, lighting systems, and external insulation in place within just 5 days. In the next phase, the project will carry forward the spirit of \" Towers erected, lights lit\", complete the installation of all remaining towers, and make every effort to meet the critical deadline of April 30th for 100% soil-free cultivation. This will help create more model projects that emphasize both speed and quality for the Tarim Phase II ethylene production facility.
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