富氧深冷空分工艺在铜冶炼中的应用

Application of Oxygen-enriched Cryogenic Air Separation in Copper Smelting

某铜冶炼企业采用一台下塔一台辅塔的双下塔富氧深冷空分工艺制备浓度85%的富氧。本文分析了该工艺的流程,将其与变压吸附工艺、常规纯氧空分工艺进行对比,并就该工艺运行中存在的问题提出优化措施。通过工艺对比可知,富氧深冷空分工艺不存在变压吸附产量逐年衰减的问题,比常规纯氧空分工艺节能15%~20%,具有氧气回收率高、投资成本和能耗低、操作和维护简单、运行稳定等优点,且经过不断优化,将显示更大的优势。

A copper smelting enterprise used a double lower tower oxygen-enriched cryogenic air separation process with one lower tower and one auxiliary tower to prepare oxygen with a concentration of 85%.This paper analyzed the process,compared it with pressure swing adsorption process and conventional pure oxygen air separation process,and put forward optimization measures for the problems existing in the operation of the process.Through the process comparison,it can be seen that there was no problem of pressure swing adsorption production declining year by year in the oxygen-enriched cryogenic air separation process.Compared with the conventional pure oxygen air separation process,it can save energy by 15%~20%.It had the advantages of high oxygen recovery rate,low investment cost and energy consumption,simple operation and maintenance,and stable operation.After continuous optimization,it would show greater advantages.