The initial lifting of the ammonia synthesis tower, a key piece of equipment in the Baling Hengyi technical upgrade project, was completed successfully

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The ammonia synthesis tower, the key equipment for the Baling Hengyi technical upgrade project, was successfully lifted in one attempt. Author/Source: Sinochem Ninth Construction Co., Ltd. Date: November 23, 2021. Clicks: 18. On November 22, the ammonia synthesis tower, the core equipment for the Baling Hengyi technical upgrade project, was lifted successfully in a single attempt. The ammonia synthesis tower to be lifted this time is of vertical structure, with a diameter of 2.4m and a height of 25m. It consists of a hanging base and the tower body itself, which weigh 21t and 311t respectively, and its installation elevation is 9m. The construction site for the 400,000-ton/year caprolactam capacity expansion project at Zhejiang Baling Hengyi is located in the Linjiang area of the Dajiangdong Industrial Cluster in Hangzhou, with a total investment of 2,478.85 million yuan. Construction content and scale: This project adds a production capacity of 200,000 tons per year for caprolactam; it is a renovation and expansion project. The project is constructed in two phases. The first phase utilizes the existing benzene hydrogenation process based on the cyclohexane method, the ammonium oxime formation process, two-stage rearrangement, and multi-stage purification processes. By adding some key production equipment to the existing facilities for oximes, caprolactam, coal-derived hydrogen, etc., the technical upgrades necessary to increase the capacity to 300,000 tons per year of caprolactam are carried out ； The second phase of the project utilizes a new cyclohexene-based benzene hydrogenation process as well as Sinopec’s latest gas-phase rearrangement technology. New production lines for the cyclohexene-based process, for ammonia oximation, and for gas-phase rearrangement to produce caprolactam are established, along with additional auxiliary facilities to support these operations, thereby enabling an expansion of caprolactam production capacity to 400,000 tons per year.