| N-甲基吡咯烷酮法萃取精馏分离C_4馏分中1,3-丁二烯的模拟 |
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| 引用本文： | 陈雅萍,梁泽生,徐伟,田云峰.N-甲基吡咯烷酮法萃取精馏分离C_4馏分中1,3-丁二烯的模拟[J].石油化工,2008,37(3):253. |
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| 作者姓名： | 陈雅萍 梁泽生 徐伟 田云峰 |
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| 作者单位： | 中国石油化工股份有限公司,北京化工研究院,北京,100013 |
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| 摘 要： | 采用NRTL方程和UNIFAC模型计算N-甲基吡咯烷酮(NMP)-C4物系的汽液平衡数据,由实验数据回归得到NRTL方程的二元交互作用参数。采用AspenPlus流程模拟软件对NMP法萃取精馏分离C4馏分中1,3-丁二烯的萃取精馏塔进行模拟,模拟结果与实验结果的相对误差小于10%,表明萃取精馏塔的数学模型可靠。考察了回流比、溶剂比(溶剂NMP与进料C4的质量比)、理论板数等因素对分离1,3-丁二烯的影响。模拟结果表明,萃取精馏塔的最佳工艺条件为:理论板数70～80块,原料进料位置为第48～52块理论板,溶剂比12,回流比0.5～1.0,溶剂进料温度40～50℃,塔顶采出量0.150～0.155kg/h。
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| 关 键 词： | 碳四馏分 1 3-丁二烯 N-甲基吡咯烷酮 汽液平衡 萃取精馏 模拟 Aspen Plus软件 |
Simulation of Separating 1,3-Butadiene from C_4 Fraction by Extractive Distillation with N-Methylpyrrolidone |
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| Chen Yaping,Liang Zesheng,Xu Wei,Tian Yunfeng.Simulation of Separating 1,3-Butadiene from C_4 Fraction by Extractive Distillation with N-Methylpyrrolidone[J].Petrochemical Technology,2008,37(3):253. |
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| Authors: | Chen Yaping Liang Zesheng Xu Wei Tian Yunfeng |
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| Affiliation: | Chen Yaping,Liang Zesheng,Xu Wei,Tian Yunfeng(Beijing Research Institute of Chemical Industry,SINOPEC,Beijing 100013,China) |
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| Abstract: | The vapor-liquid equilibrium model of extractive distillation with N-methylpyrrolidone(NMP)as extractant for separating 1,3-butadiene from C4 fraction were set up by using NRTL equation and UNIFAC group model.With regard to the model and experimental data,process of separation of C4fraction with NMP was optimized by Aspen Plus process simulating software.The optimization results were compared with experiment data,the error is within 10%.The model is considered to be reliable.Effects of column trays,reflux r... |
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| Keywords: | C4 fraction 1 3-butadiene N-methylpyrrolidone vapor-liquid equilibrium extractive distillation simulation Aspen Plus software |
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