The internal components of the ammonia synthesis tower for Fujian Shenyuan Polyamide integration project were successfully hoisted into place

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The internal components of the ammonia synthesis tower for Fujian Shenyuan’s polyamide integrated production project were successfully installed. Author/Source: Sinochem Third Construction; Date: 2021-08-12; Clicks: 22. On August 6, the inner cylinder of the ammonia synthesis tower for the second phase of Fujian Shenyuan New Materials Co., Ltd.’s 400,000 tons per year polyamide integrated production project was successfully installed. This is yet another milestone in the completion of this project, marking the successful finish of all large-scale lifting operations involved in it. The ammonia synthesis tower is the core equipment of the entire ammonia synthesis project. Its internal components utilize patented technology from the Swiss company Casali; the inner cylinder is 21.5 meters long, 2.26 meters in diameter, and has a net weight of 43.6 tons. The lifting height is 28m; the lifting is carried out using a 260t crawler crane as the main lift device, with an 80t truck crane used for assisting. The entire installation process is extremely complex, ranging from unpacking and inspecting the internal components, rust removal and cleaning inside the tower, to leveling the internal components of the tower and adjusting the gaps. All the personnel involved in the project worked together to overcome various challenges, such as limited space and difficulties in positioning the crawler crane. They carried out continuous measurements and calculations, with engineers from the Swiss company Casali providing video guidance throughout the process. After more than 6 hours of relentless effort, the internal components of the ammonia synthesis tower were finally successfully lifted into place. The construction of the second phase of Fujian Shenyuan New Materials Co., Ltd.’s 400,000 tons per year polyamide integrated production project is highly challenging, with various professional subcontractors withdrawing due to different reasons. The restructured Second Jian’an Engineering Company faced challenges head-on, organized its efforts carefully, and demonstrated a spirit of not fearing hardship and being willing to take responsibility, making significant contributions to the smooth progress of the project. The second phase of Fujian Shenyuan New Materials Co., Ltd.’s 400,000 tons per year polyamide integrated production project is located in the Kemeng Economic and Technological Development Zone in Lianjiang County, Fujian. With a total investment of 3 billion yuan, the project aims to build facilities capable of producing 75,000 standard cubic meters per hour of high-purity hydrogen gas, as well as 300,000 tons per year of liquid ammonia. It includes various processing units such as coal gasification, air separation, low-temperature methanol washing, liquid nitrogen washing, and ammonia synthesis, along with supporting utility systems and auxiliary facilities. Advanced technologies such as the latest space-based coal gasification process and three-bed with two intermediate heat exchange systems for ammonia synthesis are employed in this project. Once the project is operational, it will supply 300,000 tons of liquid ammonia per year, as well as high-purity hydrogen gas at a rate of 75,000 standard cubic meters per hour, to Shenyuan’s Phase II caprolactam plant.