考虑热力学目标的进料分流预热精馏塔分析优化

doi:10.16085/j.issn.1000-6613.2017.05.008

化工进展 ›› 2017, Vol. 36 ›› Issue (05): 1612-1618.DOI: 10.16085/j.issn.1000-6613.2017.05.008

考虑热力学目标的进料分流预热精馏塔分析优化

刘雪刚¹, 何畅¹, 张民康¹, 何昌春¹, 雷杨², 张冰剑¹, 陈清林¹

1. 中山大学化学工程与技术学院/广东省石化过程节能工程技术研究中心, 广东广州 510275;
2. 武汉科技大学化学工程与技术学院, 湖北武汉 430081

收稿日期:2016-09-09 修回日期:2016-09-28 出版日期:2017-05-05 发布日期:2017-05-05
通讯作者: 陈清林,教授,博士生导师。
作者简介:刘雪刚(1985-),男,博士研究生。
基金资助:
国家自然科学基金项目（21276288）

Analysis and optimization of distillation columns with feed splitting and preheating by considering a thermodynamic target

LIU Xuegang¹, HE Chang¹, ZHANG Minkang¹, HE Changchun¹, LEI Yang², ZHANG Bingjian¹, CHEN Qinglin¹

1. School of Chemical Engineering and Technology/Guangdong Engineering Center for Petrochemical Energy Conservation, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China;
2. School of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China

Received:2016-09-09 Revised:2016-09-28 Online:2017-05-05 Published:2017-05-05

摘要/Abstract

摘要： 系统地提出了一种进料分流预热精馏塔的节能优化与水力学校核优化方案。基于热力学工具固定精馏线-提馏线，可定量计算精馏塔获得100%理想预热效率（精馏塔再沸器负荷的减小量与进料预热量之比）时的操作参数，并利用气液分布曲线来确定效率最低的塔板；同时，基于C++和MATLAB中的GUIDE，进一步开发了具有可视化窗口的水力学验算软件，对效率最低的塔板进行水力学分析。以石油化工行业中稳定塔（简化为正丁烷-正己烷塔）为例，热力学研究结果表明，当预热量、分流率及进料位置分别设为1000MJ/h、0.7与9/20时，稳定塔可获得100%的理想预热效率；水力学核算发现，适当设置塔板结构可保证精馏塔在正常操作下实现节能的目的。本研究对实际精馏塔节能改造具有一定的指导意义。

关键词: 热力学, 固定精馏-提馏线, 石油, 水力学核算, 优化

Abstract: The work systematically addresses an optimization approach of the energy-saving and hydraulic checking for distillation columns with feed splitting and preheating. To maximize the feed preheating efficiency (ratio of the reboiler duty reduction to the feed preheating duty),the key influencing parameters (e.g. amount of preheating,splitting fraction and feed locations) were adjusted by using invariant rectifying-stripping curves. Then,vapor-liquid distributing curve was employed to identify the tray with the lowest tray efficiency. Additionally,with the help of C++ programing and GUIDE tool in MATLAB,a professional hydraulic software,namely SYSU-DISTILL,with visualization window was developed. This software was used to analyze hydraulics of any tray with the lowest tray efficiency. A stabilization tower (it was assumed as an n-butane-n-hexane column) from the petroleum and chemical industry was used as an illustrative example. The thermodynamics results showed that an ideal feed preheating efficiency (100%) of this column can be reached when amount of preheating,splitting fraction and feed locations were 1000MJ/h,0.7 and 9/20,respectively. Meanwhile, the appropriate setting tray structure can achieve the goal of energy saving under guaranteeing normal operation of the distillation column from hydraulic checking. This work provided an insight into analysis and guidance in determining the optimal schemes for energy saving of actual distillation columns.

Key words: thermodynamics, invariant rectifying-stripping, petroleum, hydraulics checking, optimization

中图分类号:

TQ028.3

刘雪刚, 何畅, 张民康, 何昌春, 雷杨, 张冰剑, 陈清林. 考虑热力学目标的进料分流预热精馏塔分析优化[J]. 化工进展, 2017, 36(05): 1612-1618.

LIU Xuegang, HE Chang, ZHANG Minkang, HE Changchun, LEI Yang, ZHANG Bingjian, CHEN Qinglin. Analysis and optimization of distillation columns with feed splitting and preheating by considering a thermodynamic target[J]. Chemical Industry and Engineering Progress, 2017, 36(05): 1612-1618.

参考文献

[1] DHOLE V R,LINNHOFF B. Distillation column targets[J]. Computers and Chemical Engineering,1993,17(56):549-560.
[2] BANDYOPADHYAY S,MALIK R K,SHENOY U V. Feed preconditioning targets for distillation through invariant rectifying-stripping curves[J]. Industrial & Engineering Chemistry Research,2003,42(26):6851-6861.
[3] 吴升元,魏志强,张冰剑,等. 基于CGCC的分馏塔进料位置[J]. 化工进展,2011,30(s2):111-117. WU S Y,WEI Z Q,ZHANG B J. et al. Study on the feed location of distillation column based on CGCC[J]. Chemical Industry and Engineering Progress,2011,30(s2):111-117.
[4] ALFADALA H E,AHMAD B M,WARSAME A F. A hierarchical approach to optimize LNG fractionation units[J]. Computer Aided Chemical Engineering,2005,20(5):1279-1284.
[5] 刘雪刚,张冰剑,陈清林. 基于分馏塔总组合曲线进料位置与进料状态的同步优化[J]. 清华大学学报(自然科学版),2016,56(7):700-706. LIU X G,ZHANG B J,CHEN Q L. Simultaneous optimization of the feed location and thermodynamic feed conditions for a distillation column based on column grand composite curves[J]. Journal of Tsinghua University(Science and Technology),2016,56(7):700-706.
[6] FILIPE S P,ROGER Z,MEGAN J,et al. Thermodynamic optimization of distillation columns[J]. Chemical Engineering Science,2011,66(13):2920-2934.
[7] WEI Z Q,WU S Y,ZHANG B J,et al. An exergy grand composite curve based procedure for arranging side exchangers on distillation columns[J]. Computer Aided Chemical Engineering,2012,31(2):1592-1596.
[8] NGUYEN N,DEMIREL Y. Retrofit of distillation columns in biodiesel production plants[J]. Energy,2010,35(4):1625-1632.
[9] LEI Y,ZHANG B J,QI X,et al. Study on constraints for heat removal duties of the main fractionator in delayed coking units[J]. Applied Thermal Engineering,2014,71(1):573-580.
[10] CHEN T,ZHANG B J,CHEN Q L. Heat integration of fractionating systems in para-xylene plants based on column optimization[J]. Energy,2014,72(7):311-321.
[11] BANDYOPADHYAY S,MALIK R K,SHENOY U V. Temperature- enthalpy curve for energy targeting of distillation columns[J]. Computers & Chemical Engineering,1998,22(12):1733-1744.
[12] WEI Z Q,WU S Y,ZHANG B J,et al. A modified approach for generating column grand composite curves[J]. Chemical Engineering & Technology,2012,35(10):1817-1824.
[13] BANDYOPADHYAY S,MALIK R K,SHENOY U V. Invariant rectifying-stripping curves for targeting minimum energy and feed location in distillation[J]. Computers & Chemical Engineering,1999,23(8):1109-1124.
[14] BENEDICT M. Multistage separation processes[J]. Transactions American Institute of Chemical Engineering Journal. 1947,43(3):41-50.
[15] SOAVE G S,GAMBA S,PELLEGRINI L A,et al. Feed-splitting technique in cryogenic distillation[J]. Industrial & Engineering Chemistry Research,2006,45(16):5761-5765.
[16] SOAVE G,FELIU J A. Saving energy in distillation towers by feed splitting[J]. Applied Thermal Engineering,2002,22(8):889-896.
[17] MCCABE W L,SMITH J C,HARRIOTT P. Unit operations of chemical engineering[M]. 7th ed. McGraw Hill International Edition,2008:493-510.
[18] BANDYOPADHYAY S,MISHRA M,SHENOY U V. Energy-based targets for multiple-feed distillation columns[J]. AIChE Journal,2004,50(50):1837-1853.
[19] 陆恩锡,张慧娟,陈志奎,等. 催化裂化装置解吸塔工艺条件全面分析[J]. 化学工程,1998(1):29-32. LU E X,ZHANG H J,CHEN Z K,et al. A comprehensive analysis for the process parameters of the stripper of FCC unit[J]. Chemical Engineering,1998(1):29-32.

考虑热力学目标的进料分流预热精馏塔分析优化

Analysis and optimization of distillation columns with feed splitting and preheating by considering a thermodynamic target

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	李梦圆, 郭凡, 李群生. 聚乙烯醇生产中回收工段第三、第四精馏塔的模拟与优化[J]. 化工进展, 2023, 42(S1): 113-123.
[2]	张瑞杰, 刘志林, 王俊文, 张玮, 韩德求, 李婷, 邹雄. 水冷式复叠制冷系统的在线动态模拟与优化[J]. 化工进展, 2023, 42(S1): 124-132.
[3]	王福安. 300kt/a环氧丙烷工艺反应器降耗减排分析[J]. 化工进展, 2023, 42(S1): 213-218.
[4]	王胜岩, 邓帅, 赵睿恺. 变电吸附二氧化碳捕集技术研究进展[J]. 化工进展, 2023, 42(S1): 233-245.
[5]	陈匡胤, 李蕊兰, 童杨, 沈建华. 质子交换膜燃料电池气体扩散层结构与设计研究进展[J]. 化工进展, 2023, 42(S1): 246-259.
[6]	王正坤, 黎四芳. 双子表面活性剂癸炔二醇的绿色合成[J]. 化工进展, 2023, 42(S1): 400-410.
[7]	孙玉玉, 蔡鑫磊, 汤吉海, 黄晶晶, 黄益平, 刘杰. 反应精馏合成甲基丙烯酸甲酯工艺优化及节能[J]. 化工进展, 2023, 42(S1): 56-63.
[8]	李春利, 韩晓光, 刘加朋, 王亚涛, 王晨希, 王洪海, 彭胜. 填料塔液体分布器的研究进展[J]. 化工进展, 2023, 42(9): 4479-4495.
[9]	董佳宇, 王斯民. 超声强化对二甲苯结晶特性及调控机理实验[J]. 化工进展, 2023, 42(9): 4504-4513.
[10]	刘炫麟, 王驿凯, 戴苏洲, 殷勇高. 热泵中氨基甲酸铵分解反应特性及反应器结构优化[J]. 化工进展, 2023, 42(9): 4522-4530.
[11]	王晨, 白浩良, 康雪. 大功率UV-LED散热与纳米TiO₂光催化酸性红26耦合系统性能[J]. 化工进展, 2023, 42(9): 4905-4916.
[12]	李海东, 杨远坤, 郭姝姝, 汪本金, 岳婷婷, 傅开彬, 王哲, 何守琴, 姚俊, 谌书. 炭化与焙烧温度对植物基铁碳微电解材料去除As(Ⅲ)性能的影响[J]. 化工进展, 2023, 42(7): 3652-3663.
[13]	谭利鹏, 申峻, 王玉高, 刘刚, 徐青柏. 煤沥青和石油沥青共混改性的研究进展[J]. 化工进展, 2023, 42(7): 3749-3759.
[14]	李蓝宇, 黄新烨, 王笑楠, 邱彤. 化工科研范式智能化转型的思考与展望[J]. 化工进展, 2023, 42(7): 3325-3330.
[15]	索寒生, 贾梦达, 宋光, 刘东庆. 数字孪生技术助力石化智能工厂[J]. 化工进展, 2023, 42(7): 3365-3373.