DMF法萃取精馏分离C5馏分中异戊烷的模拟 毕业论文.doc

1 DMF 法萃取精馏分离 C5 馏分中异戊烷的模拟 Simulation of Separating Ipentane from C5 Fraction by Extractive Distillation with DMF. [ 摘要] 介绍碳五主要馏分的综合利用。设计过程中学习了 PROII 软件相关模块的应用方法; 采用 PROII 软件对 DMF 法萃取精馏分离 C5馏分中异戊烷的萃取精馏塔进行模拟。考察了回流比、溶剂比(溶剂 DMF 与进料 C5的质量比)、理论板数等因素对分离异戊烷的影响。模拟结果表明,萃取精馏塔的最佳工艺条件为:理论板数为 50块,原料进料位置为第30块理论板,溶剂比 ,回流比 3,溶剂进料温度 50℃,溶剂进料位置在 20块左右。塔顶采出量 kg/h。理论板数的选择由实际工程放大或投资资金综合分析。并对优化后的工艺进行了物料守恒和能量守恒的校核。就此对主物料物性进行了简要阐述。确定了流程图并结合有关的数据对工程中节能措施进行了简要分析。关键词碳五馏分; PROII 软件;异戊烷;萃取蒸馏;模拟 Abstract I ntroduced prehensive utilization of the main fraction from C5. Inthe design process Ihave studied PROII software correlation module application method; The extractive distillation with MEK and NMF as extractant for separating i- pentane from C5 fraction were set up, process of separation of C5 fraction with DMF was optimized by PROII process simulating software. The model is considered tobe re of column trays, refluxratio, extractant ratio (mass ratio of DMF to feed C5) on separation were under observation. The optimized process parameters are as follows: the theoretical tray number is 50,feed tray 30th tray, extractant ratio , ref luxratio , feed input temperature 50℃. feed input tray about 20 th tray. and top product out kg/h. The choice of theoretical plate number of the actual works by the amplification prehensive analysis of investment funds. And optimized the process of conservation and energy conservation materials in check. In this connection the main physical properties of materials are briefly described. Had determined the flow chart and the union related data conserved energy the measure tothe project intocarryon the brief analysis. Key Words C5 fraction; PROII software; i so pentane; extractive distillation; 2 目录 1前言........................................................................................................................................... 1 2文献综述.............................................................................