导　　师： 刘丽艳;张萍

学科专业： 081701

授予学位： 硕士

作　　者： ;

机构地区： 天津大学

摘　　要： 针对某化工厂50万吨高硫煤制甲醇项目配套空分装置流程进行分析研究，从空气分离的精馏原理着手，介绍现代大型化工企业对制氧的要求以及现代空分应采用的分离方法，空分在现代煤化工生产中的作用和意义。综述现代大型低温空分流程装置的生产现状及概况，对该套空分的整体工艺流程进行详细分析，具体介绍了空冷塔、水冷塔、板翅式换热器、精馏塔、粗氩塔、精氩塔等主要设备的运行情况及模拟参数设置。采用流程模拟软件PRO//II，选择PR方程作为热力学研究方法对所研究物系进行了分析对该空分项目精馏塔上下塔、两个粗氩塔以及精氩塔的物料流股的流向、温度、压力、成分等参数流程进行了深入的模拟研究。流程模拟结果与生产数据进行比对，发现各产品的纯度均达到或超过了生产要求。在流程模拟基础上进行系统节能设计，并对该厂空分装置中平时操作中的问题进行总结，并提出改进意见，实现空分系统整体节能降耗。 In a chemical factory of500000tons of coal to methanol projects supportingapparatus for air separation process is analyzed, from the air separation by distillationprinciple to proceed, introduction to modern large enterprises of chemical oxygendemand of modern air separation and the separation method, air separation in moderncoal chemical production in the role and significance of. Review of modern large lowtemperature air separation process for production present situation, on the set of airseparation of the whole process in detail, introduces the cooling tower, cooling tower,plate-fin heat exchanger, distillation column, a crude argon column, refining argontower and other major equipment performance and simulation parameters setting. Theprocess simulation software PRO//II, select the PR equation as the study method ofsystem analysis was carried out on the air separation project distillation tower, twocrude argon column and refining argon tower material stream flow, temperature,pressure, composition and other parameters of process undertook thorough simulationstudy. Process simulation and production data are compared, found that the purity ofthe product have reached or exceeded the requirements of production. In the processsimulation system based on the energy saving design, and the factory in air separationunit normal operation problems are reviewed, and proposed the improvement opinion,realize the overall energy saving in air separation system.

关 键 词： 空分 低温流程 精馏 方程 热力学模型 节能

领　　域： [化学工程]