国外二手设备改扩建450t／d稀硝酸装置运行总结

简要介绍了利用国外二手设备改扩建的450t／d稀硝酸装置的工艺特点及流程，详细介绍了该装置在设计、建设、试运行中存在的问题。该装置经过半年多的运行，生产工艺已趋于稳定，为公司增加合成氨产量、调整氨加工产品结构提供了有力保证。

Sum-Up of Operation of 450 t/d Dilute Nitric Acid Plant Transformed from Foreign Second-Hand Equipment

The process features and flowsheet of a 450 t/d dilute nitric acid plant transformed from foreign second-hand equipment are briefly described; and the problems are presented in detail in the design, construction and commissioning of the plant. After running for over half a year, the openration of the plant tends to be stable, thus effectively assuring an increase in ammonia output and adjustment of set-up of production based on ammonia.