通过对氨气提法尿素生产工艺的分析和模拟计算 ,对提出的 2套改造方案进行系统比较 ,确定了最佳改造工艺 ,节省了投资 ,简化了操作 ,使规整填料塔的技术优势得到更大的发挥。 Through the analysis and simulation calculation of urea production process of ammonia extraction, the two sets of reform schemes proposed are systematically compared to determine the best conversion process, save investment, simplify operation and make the technical advantages of structured packing tower more Great play.