350 kt/a合成氨配套39×10^(3)m^(3)/h空分的优化选择

Optimal Selection of 39×10^(3)m^(3)/h Air Separation for 350 kt/a Synthetic Ammonia System

结合自身项目的需求,综合考虑安全与效益,探讨了350 kt/a合成氨配套的39×10^(3)m^(3)/h空分装置的优化选择,通过对内压缩和外压缩、液氮加压气化和氮气加压、液体膨胀机和高压液空节流阀等流程配置的对比分析,选择了内压缩、液氮加压气化、配置液体膨胀机的流程,可实现产氧39×10^(3)m^(3)/h、产氮45×10^(3)m^(3)/h,同时副产液氧、液氮、液氩等产品,主要能源消耗3.4 MPa驱动蒸汽耗量小于120 t/h。

The optimal selection of 39×10^(3)m^(3)/h air separation plant for 350 kt/a synthetic ammonia system is discussed in combination with the requirements of its own project and considering safety and benefit comprehensively. Through the comparative analysis of the process configuration of internal compression and external compression, liquid nitrogen pressurized gasification and nitrogen pressure, liquid expander and high pressure liquid-air throttle valve, the process of internal compression, liquid nitrogen pressurized gasification and configuration of liquid expander are selected. The oxygen production of 39×10^(3)m^(3)/h and nitrogen production of 45×10^(3)m^(3)/h can be realized, and the by-product of liquid oxygen, liquid nitrogen and liquid argon can be produced. Main energy consumption 3.4 MPa drive steam consumption is less than 120 t/h.