The 810-ton ethylene oxide reactor, the heaviest piece of equipment in the Yulin High-End Chemicals and New Materials project, has been hoisted into place
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The heaviest tower vessel for the Yueneng high-end chemicals and new materials project was hoisted into place. On December 23, good news came again from the construction site of the 1 million tons per year high-end chemicals and new materials project operated by Shaanxi Yueneng Fine Chemicals Materials Co., Ltd.: the heaviest large-scale tower vessel in this project, namely the ethylene oxide reactor, was successfully hoisted into position with precision in just one attempt. It not only set a new record for the heaviest equipment to be lifted, but also marked a breakthrough in the project’s development, marking the full transition from civil construction to equipment installation and thus pressing the ‘accelerator’ on the overall progress of the project. As the core equipment of the ethylene oxide plant, the ethylene oxide reactor has a diameter of 6.1 meters and a height of 22.4 meters; its net weight is 759 tons, while the total weight when lifted is 810 tons. This device is a large-scale tubular fixed-bed reactor with a sophisticated internal structure; it contains approximately 8,400 reaction tubes. It enables precise control of the reaction temperature, thereby ensuring efficient use of the catalyst and significantly improving the yield of ethylene oxide as well as the selectivity of the product. It is key to the safe, stable, and efficient operation of ethylene oxide production facilities. Faced with multiple challenges such as excessive equipment weight, large size, limited space, and the cold winter climate, the ethylene oxide project team and the lifting crew maintained a work style characterized by rigor, meticulousness, and practicality, carrying out thorough planning and scientific arrangements. The construction contractor, China National Chemical Engineering Corporation Sixth Construction Co., Ltd., employed a \"double-crane lifting\" technique for the installation process. A 1,600-ton crawler crane was used as the main lifting crane, while a 650-ton crawler crane assisted in guiding the equipment. Through a series of high-precision, highly coordinated standardized operations such as turning the equipment over, positioning it upright, adjusting its angle, lifting it with the main crane, and rotating and translating it in mid-air, the reactor was successfully installed in place in one go. The entire process was safe and under control, with smooth transitions between different stages of work.
The Yueneng 1 million tons per year high-end chemicals and new materials project is located in the Yushen Industrial Zone, covers an area of 1,500 mu, and has a total estimated investment of 10.315 billion yuan. The construction scope mainly includes a 400,000-ton/year DMTA plant, a 200,000-ton/year ethylene oxide plant, a 200,000-ton/year polyether superplasticizer monomer plant, a 100,000-ton/year propylene oxide plant, a 260,000-ton/year hydrogen peroxide plant, an 80,000-ton/year acrylic acid plant, a 120,000-ton/year butyl acrylate plant, a 400,000-ton/year acrylate emulsion plant, a 400,000-ton/year polycarboxylate superplasticizer plant, as well as supporting utility and auxiliary facilities. Once the project is completed and put into operation, it will be able to generate annual revenue of around 8 billion yuan, and produce nearly 10 types of chemical products.
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