Completion of the full-process operation of the 400,000 tons/year ammonia synthesis unit in the Lianyungang Alkali Industry relocation and upgrading project

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The entire synthesis ammonia production process for the relocation and upgrading project of Lianyungang Alkali Industry has been completed. May 16, 2025 – At 21:30 on May 14, 2025, the 400,000 tons per year synthesis ammonia plant as part of Lianyungang Alkali Industry’s relocation and upgrading project successfully produced its first batch of qualified liquid ammonia, with an ammonia content of 99.9%; all parameters met the standards for **top-quality products**. At this point, the ammonia synthesis unit of the company’s relocation project has achieved a complete integration of its production processes, and the liquid ammonia produced is being continuously delivered to the downstream caustic soda production units. The project commenced construction in June 2022. At 10:33 a.m. on May 10, 2025, the second gasifier in the ammonia synthesis unit of Lianyungang Alkali Industry Co., Ltd.’s relocation project was fed with material. As a result, the ammonia synthesis unit part of this relocation and upgrade project now has two units in operation and one in standby, thus entering full-scale operation. On April 29, 2025, the first feeding of the Jinhua furnace for the 400,000 tons per year ammonia synthesis unit in the Lianyungang Alkali Industry relocation and upgrading project was successful. At present, all parameters are normal after feeding, indicating that the gasification unit has entered the trial production phase. After that, transformation and purification are carried out in sequence. At 21:30 on May 9, as the hotspot temperature in Bed 1 of the ammonia synthesis tower exceeded 500°C, the catalyst began to heat up and undergo reduction, marking the complete circulation of process gas throughout all sections of the ammonia synthesis plant, from the upstream gasification unit to the downstream synthesis unit. Currently, the second catalyst bed in the synthesis tower has entered the main reduction phase. The relocation, upgrading and transformation project of Lianyungang Alkali Industry Company involves a total investment of 5.828 billion yuan, covers an area of approximately 1,198 mu, and aims to build facilities with an annual production capacity of 1.1 million tons of caustic soda, 400,000 tons of synthetic ammonia, and 1 million tons of vacuum salt, along with the supporting utility and auxiliary systems. Among them, 3 Jinhua furnaces are used for ammonia synthesis, with two in operation and one as a backup. Vaporization pressure: 6.5 MPa. The total gas volume is 110,000 m3/h (CO+H2). Project Overview: The relocation, upgrading, and renovation project of Lianyungang Alkali Industry Co., Ltd. involves the construction of a 1.2 million tons per year soda ash production facility (including an 800,000 tons per year heavy soda ash plant, a 400,000 tons per year light soda ash plant, and a 1.2 million tons per year agricultural ammonium chloride plant), a 400,000 tons per year synthetic ammonia plant (including an air separation unit with a capacity of 43,000 Nm³/hour), a 1 million tons per year vacuum salt production plant, along with the associated utility and auxiliary systems. Designed by China Tianchen Engineering Co., Ltd.