变压精馏分离正庚烷-异丁醇工艺设计

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英文篇名：Design of Pressure-swing Distillation for Separation of N-heptane and Isobutanol 作者：杨靖 ; 张喜 ; 丁梦楠 ; 唐早早 ; 吴港 ; 郭尚 英文作者：YANG Jing;ZHANG Xi;DING Meng-nan;TANG Zao-zao;WU Gang;GUO Shang;School of Material and Chemical Engineering,Chuzhou University; 关键词：正庚烷 ; 异丁醇 ; 变压精馏 ; 模拟 英文关键词：n-heptane;;isobutanol;;pressure-swing distillation;;simulation 中文刊名：蚌埠学院学报 英文刊名：Journal of Bengbu University 机构：滁州学院材料与化学工程学院; 出版日期：2019-04-20 出版单位：蚌埠学院学报 年：2019 期：02 基金：安徽省高校省级质量工程项目(2015JXTD040);; 校级规划项目(2016GH14);; 大学生创新创业项目(2017CXXl057) 语种：中文; 页：49-52 页数：4 CN：34-1321/Z ISSN：2095-297X 分类号：TQ028.31;TQ221.17

摘要

针对分离正庚烷-异丁醇二元共沸体系,建立了变压精馏分离工艺。选用NRTL模型,对加压塔和常压塔的理论塔板数、进料板位置、回流比等主要参数进行了优化,确定了最佳工艺参数:加压塔操作压力500. 0 kPa,回流比4. 1,理论塔板数65,第6块理论板为进料板;常压塔操作压力101. 3 k Pa,回流比1. 3,理论塔板数9,第5块理论板为进料板。该条件下正庚烷、异丁醇产品质量分数均达到了99. 9%,再沸器总热负荷最低。
        For the separation of n-heptane-isobutanol binary azeotropic system,a process of pressurized column and atmospheric column was established. With the NRTL model,the main parameters such as the number of theoretical stage,the feed stage,and the reflux ratio of the pressurized and atmospheric column were optimized. The best process parameters were as follows: for pressurized column,the pressure was500. 0 kPa,the reflux ratio was 4. 1,the theoretical stage number was 65 and the feed stage was 6; for atmospheric column,the pressure was 101. 3 kPa,the reflux ratio was 1. 3,the theoretical stage number was9 and the feed stage was 5. Under this condition,the mass fraction of both n-heptane and isobutanol products was 99. 9%,and the reboiler total heat duty reached the lowest value.

引文

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