Aspen Plus在模拟分离乙腈-水过程中的应用
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摘要
采用加压-常压双塔精馏分离工艺,对乙腈-水的共沸物进行分离。借助Aspen Plus软件,用Wilson活度系数方程为物性计算方法,以满足乙腈产品纯度分别达到99.5%。以再沸器总热负荷为指标,对理论板数、回流比以及进料位置进行优化,所得最佳工艺参数为:加压塔理论板数为12,回流比为0.7,进料位置为6;常压塔理论板数为11,回流比为0.3,进料位置为7。
A pressure-swing distillation was used to separate of acetonitrile and water. With the aid of the Aspen Plus software Wilson activity coefficient equation was selected as the property calculation method to ensure the separation purity of acetonitrile( 0. 995). In order to achieve the minimum of total reboiler duty,the theoretical plate number,reflux ratio and feed position was optimized. The results showed that : For the pressurized tower,the theoretical plate number is 12,reflux ratio is 0. 7,feed position is 6; for the atmospheric tower,the theoretical plate number is 11,reflux radio is 0. 3,and the feed position is 7.
A pressure-swing distillation was used to separate of acetonitrile and water. With the aid of the Aspen Plus software Wilson activity coefficient equation was selected as the property calculation method to ensure the separation purity of acetonitrile( 0. 995). In order to achieve the minimum of total reboiler duty,the theoretical plate number,reflux ratio and feed position was optimized. The results showed that : For the pressurized tower,the theoretical plate number is 12,reflux ratio is 0. 7,feed position is 6; for the atmospheric tower,the theoretical plate number is 11,reflux radio is 0. 3,and the feed position is 7.
引文
[1]张婧,周振瀛.乙腈的综合利用[J].精细石油化工,1996(4):47-49.
[2]魏奇业,杨树林,魏毓良.乙腈精制过程优化研究[J].化工自动化及仪表,2011,38(9):1104-1106.
[3]卢英俊,孙小方,潘海天.乙腈生产及精制工艺研究进展[J].科技通报,2014(3):12-18.
[4]李雅丽.丙烯腈副产乙腈的开发利用[J].石油化工,1998,27(5):367-373.
[5]杨君豪.乙腈的利用[J].江苏化工,1993,21(4):1-4.
[6]马文婢,孙建杰,魏洪普,等.萃取法分离乙腈-乙酸乙酯和水混合物的研究[J].应用化工,2010,38(5):781-782.
[7]何姚吉.乙腈-水共沸物分离的模拟与实验研究[D].天津:天津大学,2018.
[8]俞国栋.复杂间歇精馏的研究进展[J].辽宁化工,2013,42(4):352-354.
[9]贾绍义,柴成敬.化工传质分离过程[M].北京:化学工业出版社,2011.
[10]邓修,吴俊生.化工分离工程[M].北京:科学出版社,2000.
[11]Donis I R,Esquijarosa J A,Gebaud V,et al.Separation of nhexane-ethyl acetate mixtures by azeotropic batch distillation with heterogeneous entrainers[J].Chemical Engineering and Procssing,2005,44(1):131-137.
[12]Munoz R,Monton J B,Burguet M C,et al.Separation of isobutyl alcohol and isobutyl acetate by extractive distillation and pressure-swing distillation:Simulation and optimization[J].Separation and Purification Technology,2006,50(2):157-158.
[13]Modla G,Lang P.Feasibility of new pressure swing batch distillation methods[J].Chemical Engineering Science,2008,63(11):2856-2874.
[14]Lei Zhigang,Zhou Rongqi,Duan Zhanting.Application of scaled particle theory in vextractive distillation with salt[J].Fluid Phase Equilibria,2002,200(1):187-201.
[15]Kiminori S,Kazunori S,Takashi N.Separation of ethanol-ethyl acetate mixture by pervaporation at 100-300℃through Na Y zeolite membrane for industrial purpose[J].Microporous and Mesoporous Materials,2008,115(1):170-175.
[16]余美琼,杨金杯,郑志功,等.变压精馏和萃取精馏分离乙腈和水工艺模拟及优化[J].中南大学学报,2014,45(9):2966-2971.
[17]韩世军.丙烯腈-乙腈-水三元体系汽液平衡的研究[J].化工学报,1980,31(3):241-243.
[2]魏奇业,杨树林,魏毓良.乙腈精制过程优化研究[J].化工自动化及仪表,2011,38(9):1104-1106.
[3]卢英俊,孙小方,潘海天.乙腈生产及精制工艺研究进展[J].科技通报,2014(3):12-18.
[4]李雅丽.丙烯腈副产乙腈的开发利用[J].石油化工,1998,27(5):367-373.
[5]杨君豪.乙腈的利用[J].江苏化工,1993,21(4):1-4.
[6]马文婢,孙建杰,魏洪普,等.萃取法分离乙腈-乙酸乙酯和水混合物的研究[J].应用化工,2010,38(5):781-782.
[7]何姚吉.乙腈-水共沸物分离的模拟与实验研究[D].天津:天津大学,2018.
[8]俞国栋.复杂间歇精馏的研究进展[J].辽宁化工,2013,42(4):352-354.
[9]贾绍义,柴成敬.化工传质分离过程[M].北京:化学工业出版社,2011.
[10]邓修,吴俊生.化工分离工程[M].北京:科学出版社,2000.
[11]Donis I R,Esquijarosa J A,Gebaud V,et al.Separation of nhexane-ethyl acetate mixtures by azeotropic batch distillation with heterogeneous entrainers[J].Chemical Engineering and Procssing,2005,44(1):131-137.
[12]Munoz R,Monton J B,Burguet M C,et al.Separation of isobutyl alcohol and isobutyl acetate by extractive distillation and pressure-swing distillation:Simulation and optimization[J].Separation and Purification Technology,2006,50(2):157-158.
[13]Modla G,Lang P.Feasibility of new pressure swing batch distillation methods[J].Chemical Engineering Science,2008,63(11):2856-2874.
[14]Lei Zhigang,Zhou Rongqi,Duan Zhanting.Application of scaled particle theory in vextractive distillation with salt[J].Fluid Phase Equilibria,2002,200(1):187-201.
[15]Kiminori S,Kazunori S,Takashi N.Separation of ethanol-ethyl acetate mixture by pervaporation at 100-300℃through Na Y zeolite membrane for industrial purpose[J].Microporous and Mesoporous Materials,2008,115(1):170-175.
[16]余美琼,杨金杯,郑志功,等.变压精馏和萃取精馏分离乙腈和水工艺模拟及优化[J].中南大学学报,2014,45(9):2966-2971.
[17]韩世军.丙烯腈-乙腈-水三元体系汽液平衡的研究[J].化工学报,1980,31(3):241-243.