洛阳石化空分装置扩能改造项目研究.pdfVIP

摘要 本文综述了空气分离的基本方法以及国内外空分行业的发展现状，介绍了洛阳石化 KDN-1000 型空分项目改造的目的，设计原则、原理及有关设备的设计计算、设备的选型 和工艺管道流量设计计算等；论述了KDN-1000 型空分项目改造施工过程中的关键点。 利用PRO/II 模拟软件对改造后的精馏塔进行模拟计算，通过改变进气量，得出下一步 改造需要改动的设备，提出自己的看法。 对制氮设备的副产品—富氧空气的回收利用进行研究，提出了两种回收方案，并对锅 炉助燃、污水处理以及克劳斯法硫回收工艺的应用进行分析，说明石化企业空分装置富氧 空气回收利用是切实可行的，投资不多但效益可观。 3 该改造项目建成投产两年来，实际氮气产量达到1600m /h ，氮气纯度达到99.999% 以 上，达到了设计目标，说明本次改造是成功的。整个项目总体投资150 余万元，半年可收 回投资成本，效益良好。 关键词：空分设备 技术改造 效益分析 富氧空气 回收利用 3 ABSTRACT In this paper, the basic methods of air separation and the development status of air separation industry in domestic and overseas are described. The reconstruction purpose, principles of design, design calculation, type selection and the design calculation of process pipe, of KDN-1000 Air separation anti-seismic in Sinopec Luoyang Company are introduced. The key points of the air separation project (model KDN-1000) modification and construction is discussed. After simulation calculation on the rectifying tower by using PRO/II simulation software, through altering the intake mass, the next technical reform machine is come to a conclusion, and the own opinion is raised. By researching recovery and utilization the oxygen-enriched air, which is the secondary product of nitrogen production plant, two recycling methods are put forward. Boiler assistant-burning, sewage disposal, and the application of Claus Sulphur recovery technique are analysed. It is explicated that oxygen-enriched air recovery and utilization in air separation unit of petrochemical enterprises is practical, less investment cost, but considerable beneficial result.