提高单塔返流制氮设备氮气提取率的探讨  

Approach to improve the nitrogen extraction ratio of single-tower return flow nitrogen generating equipment

作　　者：扈丽杰 周大荣 陈熙静 

机构地区：[1]上海启元空分技术发展有限公司

出　　处：《深冷技术》2011年第7期29-32,共4页

摘　　要：结合单塔返流制氮设备的3种流程,分析精馏塔压力、理论塔板数和富氧液空的过冷度对氮气提取率的影响;指出通过合理地设置液空过冷器和充分利用旁通富氧气,来提高单塔返流制氮设备的氮气提取率。Here, in combination with three processes of single-tower return flow nitrogen generating equipment the impact of rectification tower pressure, theoretical plate number, and supercooling degree of oxygen-rich liquefied air on nitrogen extraction ratio is analyzed, and the method to improve nitrogen extraction ratio of single-tower return flow nitrogen generating equipment through rational fixing of liquefied air supercooler and full utilization of by-passed oxygen-rich air.

关 键 词：制氮设备 单塔返流流程 精馏塔压力 理论塔板数 液空过冷器 氮气提取率 

分 类 号：TB657.7[一般工业技术—制冷工程]