【Ten Years of Rapid Development in Chemical Equipment】2649-2025: China’s First Set of Such Equipment! The first unit of the integrated desulfurization and decarbonization system for the Tarim Phase II CCUS facility was successfully lifted into place

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Give praise and encouragement to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Great Progress in Chemical Engineering Equipment】Ongoing updates and summaries available – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** The first set of such equipment produced in China! The first unit of the integrated desulfurization and decarbonization system for the Tarim Phase II CCUS facility was successfully lifted. On August 30, good news came from the green and low-carbon project associated with the 1.2 million tons per year ethylene production facility in Tarim, operated by Dushanbe Petrochemical Company: the first unit of the 2×400,000 tons per year CO₂ capture facility, namely the integrated desulfurization and decarbonization unit (identification number 121—PK—2101), was successfully lifted into place. As the first modular lifting operation for China’s first integrated desulfurization and decarbonization unit based on CCUS (carbon capture, utilization, and storage) technology, CPECC First Construction Company not only overcame the challenge of precisely positioning large modules weighing over 100 tons but also marked a breakthrough in the installation of key equipment for green and low-carbon development, laying a crucial foundation for the subsequent commissioning of the CO2 capture system. It is reported that the desulfurization and decarbonization integrated unit serves as the \"core pre-treatment unit\" for the 2×400,000 tons/year CO₂ capture facilities; it plays a key role in removing sulfides from the flue gases from the ethylene cracking furnaces and in achieving the initial purification of CO₂. A total of 2 such units are planned to be installed (121—PK—2101/121—PK—2201). Each integrated unit is divided into 6 separate modules from bottom to top. The first module needs to be assembled on-site using the equipment itself, while the remaining 5 modules are assembled in a prefabrication facility and then transported to the site using special vehicles for installation. What was lifted this time was the second module of the first integrated unit; this module weighs 170 tons, and with the addition of lifting equipment and reinforcing elements, the total lifting load amounts to 207 tons. It is one of the heaviest modules in the modular construction process of this integrated unit. To ensure the successful lifting of the first prototype weighing over 100 tons, the team developed a specialized plan addressing the challenges of high weight and high precision: Module transportation and positioning preparation: The 170-ton module was transported using multi-axis synchronous control systems; during transportation, a level was used to monitor the module’s levelness in real time (with a deviation of ≤2 mm), thereby preventing deformation of the steel structure due to long-distance transport ； Before lifting, the equipment foundation is re-measured using a total station to ensure that the elevation deviation of the foundation is ≤1 mm and the axis position deviation is ≤3 mm. Marking lines for module alignment on the foundation surface provides a reference for accurate positioning. Crane configuration and process selection: A 550t crawler crane is selected as the main crane; its rated lifting capacity at a lift distance of 35m in overhead lifting mode is 260t, which not only fully covers the 207t lifting load but also meets the safety factor requirements ； To address the characteristics of the module involving \"irregular steel structures + heavy weights\", a double-sling balance beam was designed. A 20-mm-thick nylon pad was installed at the connection point between the balance beam and the module’s lifting lugs to reduce local pressure. On the day of the lifting ceremony, at the command signal, the 550t crawler crane slowly raised the 207t heavy module to the designed height (approximately 22 meters). Throughout the process, the verticality of the module was monitored in real time (with an allowable deviation of ≤1/1000H). As the module approached its intended position, the operator used a walkie-talkie to make fine adjustments to the crane’s angle, eventually placing the module precisely above the first module to be assembled on site. The entire process of \"lifting, raising, aligning, and placing\" was completed in just 1.5 hours. The successful lifting of this first prototype not only verifies the feasibility of the \"pre-fabrication and modular lifting\" process for integrated desulfurization and decarbonization units, but also fills the technical gap in China regarding the construction of modules weighing over 100 tons for such CCUS facilities. As a key element for achieving green and low-carbon operations in Phase II of the ethylene project, the 2×400,000 tons per year CO₂ capture units, once put into use, will be able to capture 800,000 tons of CO₂ annually from the exhaust gases generated by the ethylene cracking furnaces in Phase II. This CO₂ can then be used as raw material for the production of low-carbon products such as urea, thereby helping the project achieve both goals of carbon reduction and resource recycling. Next, the construction team will accelerate the prefabrication, transportation, and lifting of the remaining 5 modules, in order to complete the modular installation of all modules for the 2 integrated desulfurization and decarbonization units as planned.