China Shaangu Nitric Acid Steam-to-Electric Project Fully Operational

Recently, the energy-saving retrofit project for the No. 2 nitric acid unit (a four-in-one unit) of a customer in Northwest China, undertaken by Shaangu, successfully started up on its first attempt and officially commenced operation. This marks the successful completion and full operation of two customized energy-saving retrofit projects for the customer's nitric acid units.

Previously, the Shaangu team had successfully completed the "Steam-to-Electricity" conversion project for the No. 1 nitric acid unit (a four-in-one unit) amidst the harsh winter winds and snow, achieving a successful trial run and early commissioning. This project not only overcame numerous technical challenges with unexpectedly high efficiency but also achieved a dual leap in unit energy efficiency and operational stability through closed-loop safety management throughout the entire process and efficient collaborative operations across the entire chain, injecting strong momentum into the customer's high-quality development in the new year.

Building on the success of the No. 1 project, the Shaangu team set its sights on the goal of officially launching the same process technology retrofit for the No. 2 nitric acid unit. Faced with challenging local construction conditions and tight deadlines, the Shaanxi Blower team meticulously managed the entire process from construction to commissioning, ensuring the project's safe and high-quality progress. After more than 30 days and nights of continuous effort, they successfully completed the entire process of equipment modification, installation, and commissioning, ultimately achieving a successful start-up and smooth commissioning of the project on the first attempt.

The modified Unit #2 completely eliminated its dependence on external high-pressure steam, achieving energy self-balancing in the production system. Excess steam generated during production can be entirely exported to further optimize regional energy allocation, realizing the cascade utilization and value-added conversion of energy. Simultaneously, the unit's operational stability and process control precision were further improved, the equipment structure was effectively simplified, and daily maintenance intensity and safety risks were significantly reduced. After the modifications to Units #1 and #2, annual energy and maintenance costs are saved by approximately 8 million yuan, truly achieving long-term benefits from a single modification, adding a powerful new wing to the user's "energy saving, carbon reduction, quality improvement, and efficiency enhancement."