液固萃取塔中尼龙6中己内酰胺的外部传质系数

doi:10.12034/j.issn.1009-606X.217261

过程工程学报 ›› 2018, Vol. 18 ›› Issue (1): 75-81.DOI: 10.12034/j.issn.1009-606X.217261

液固萃取塔中尼龙6中己内酰胺的外部传质系数

秦春曦¹，奚桢浩^1,2，赵玲^1,2*

1. 华东理工大学化学工程联合国家重点实验室，上海 200237；2. 华东理工大学过程系统工程教育部工程研究中心，上海 200237

收稿日期:2017-06-22 修回日期:2017-08-28 出版日期:2018-02-22 发布日期:2018-01-29
通讯作者: 赵玲 zhaoling@ecust.edu.cn
基金资助:
国家重点研发计划;中央高校基本科研业务费重点科研基地创新基金

External Mass Transfer Coefficient of Caprolactam in Nylon 6 in Liquid-Solid Extraction Tower

Chunxi QIN¹, Zhenhao XI^1,2, Ling ZHAO^1,2*

1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 2. Engineering Research Center of Process System Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2017-06-22 Revised:2017-08-28 Online:2018-02-22 Published:2018-01-29
Contact: ZHAO Ling zhaoling@ecust.edu.cn

摘要/Abstract

摘要： 采用固定床半间歇萃取装置在工业生产温度与流速下研究了尼龙6颗粒中己内酰胺(CL)的液固传质过程，基于萃取过程中CL浓度在颗粒中呈现抛物线分布的假设，建立了液固传质过程的外部传质系数模型. 结果表明，温度65~95℃和液相流速0.27~2.71 mm/s时，提高温度与流速均能显著加快CL的液固萃取. 外部传质系数模型适用于描述无因次时间大于0.15的实验数据. 将CL外部传质系数进行无因次量纲化，建立了舍伍德数(Sh)、施密特数(Sc)和雷诺数(Re)间的相互关系，可用于预测尼龙6工业萃取塔中的CL外部传质系数.

关键词: 液固萃取, 传质系数, 尼龙6, 己内酰胺, 雷诺数

Abstract: The liquid?solid extraction process of caprolactam (CL) in nylon 6 particles was investigated by packed bed semi-continuous experiments under the conditions of industrial interest. Based on the assumption that the CL concentration profile inside particles conformed to parabolic profile during the extraction, the external mass transfer coefficient model was developed. The results showed that in the range of temperature 65~95℃ and liquid velocity 0.27~2.71 mm/s, the liquid?solid extraction process of CL could be significantly accelerated by the increase of either temperature or liquid velocity. The external mass transfer coefficient model was adapted to reproduce the experimental data under the dimensionless time larger than 0.15. Through normalizing the external mass transfer coefficients, a correlation of Sh, Sc and Re, which could be used to predict the CL external mass transfer coefficient in the industrial extraction tower, was acquired.

Key words: liquid-solid extraction, mass transfer coefficient, nylon 6, caprolactam, Reynolds number

秦春曦奚桢浩赵玲. 液固萃取塔中尼龙6中己内酰胺的外部传质系数[J]. 过程工程学报, 2018, 18(1): 75-81.

Chunxi QIN Zhenhao XI Ling ZHAO. External Mass Transfer Coefficient of Caprolactam in Nylon 6 in Liquid-Solid Extraction Tower[J]. Chin. J. Process Eng., 2018, 18(1): 75-81.

参考文献

[1] Funai V I, Melo D N C, Lima N M N, et, al.Estimation of Kinetic Parameters and Mathematic Validation for Nylon 6 Process[J].Computer Aided Chemical Engineering, 2012, 30(4):1148-1152
[2] Seavey K, Liu Y A.Step-Growth Polymerization Process Modeling and Product Design [M]. New Jersey: John Wiley & Sons, 2009: 463-465.
[3] Kerkhof P J A M.Countercurrent Plug Flow Mass Exchange with Internal Particle Diffusion[J].Chemical Engineering Science, 2007, 62(7):2040-2067
[4] Wenmakers P W A M, Schaaf J V D, Kuster B F M, et al.Liquid-Solid Mass Transfer for Concurrent Gas-Liquid Upflow Through Solid Foam Packings[J].AIChE Journal,, 2010, 56(11):2923-2933
[5] Silva W P D, Precker J W, Silva C M D P S, et al.Determination of Effective Diffusivity and Convective Mass Transfer Coefficient for Cylindrical Solids Via Analytical Solution and Inverse Method: Application to the drying of rough rice[J].Journal of Food Engineering, 2010, 98(3):302-308
[6] Gaglione A.Multiscale Modeling of an Industrial Nylon-6 Leacher [D]. Virginia: Virginia Polytechnic Institute and State University. 2007: 30-31.
[7] 吕文军, 王朝生, 闫鸿敏, 等.PA6 切片萃取动力学研究[J].合成纤维工业, 2007, 30(5):29-31
[8] 邢玉林.尼龙 6 生产中环状二聚体的控制策略 [D]. 上海: 华东理工大学. 2014: 44.
[9] Silem A, Gunter H, Einfeldt J, et, al.The Occurrence of Mass Transport Processes during the Leaching of Amygdalin from Bitter Apricot Kernels: Detoxification and Flavour Improvement[J].International Journal of Food Science and Technology, 2006, 41(2):201-213
[10] Do D D, Rice R G.Validity of the Parabolic Profile Assumption in Adsorption Studies[J].AIChE Journal, 1986, 32(1):149-154
[11] Goto M, Smith J, Mccoy B J.Parabolic Profile Approximation (Linear Driving-Force Model) for Chemical Reactions[J].Chemical Engineering Science, 1990, 45(2):443-448
[12] Liaw C, Wang J S P, Greenkorn R A, et al.Kinetics of Fixed‐Bed Adsorption: A New Solution[J].AIChE Journal, 1979, 25(2):376-381
[13] Crank J.The Mathematics of Diffusion [M]. England: Oxford university press. 1979: 70-80.
[14] Seguin D, Montillet A, Brunjail D, et al.Liquid-Solid Mass Transfer in Packed Beds of Variously Shaped Particles at Low Reynolds Numbers: Experiments and Model[J].Chemical Engineering Journal & the Biochemical Engineering Journal, 1996, 63(1):1-9
[15] Zaki M, Nirdosh I, Sedahmed G H, et al.Liquid/Solid Mass Transfer in Fixed Beds[J].Chemical Engineering & Technology, 2004, 27(4):414-416

液固萃取塔中尼龙6中己内酰胺的外部传质系数

External Mass Transfer Coefficient of Caprolactam in Nylon 6 in Liquid-Solid Extraction Tower

PDF

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

[1]	孙国斌向晓东. 硅类物质在铁水脱磷过程中的影响特征[J]. 过程工程学报, 2021, 21(8): 944-950.
[2]	杨宏刚王楠王怡姚蕾采晓帆 . 高雷诺数下变截面分流歧管面积比对流体分配性能的影响[J]. 过程工程学报, 2021, 21(5): 550-557.
[3]	邢雷蒋明虎赵立新谯意韩国鑫. 水平圆管内油水两相旋流分隔性能分析与评价[J]. 过程工程学报, 2021, 21(5): 558-566.
[4]	孙丽张楠刘新华范怡平. 边界条件对颗粒–流体对流传热的影响[J]. 过程工程学报, 2019, 19(6): 1075-1084.
[5]	耿康生李育敏陆佳冬刘鹏真汪军计建炳. 化学吸收法测定新型复合转子旋转床气液有效比表面积及液相传质系数[J]. 过程工程学报, 2018, 18(4): 704-709.
[6]	高亚洁袁志国刘有智刘慧军杜杰梁鹏飞. 分层填料错流超重力装置传质性能 [J]. , 2017, 17(1): 47-51.
[7]	董梅英祁贵生刘有智郭强宋彬王探. 错流旋转填料床传质特性影响因素的实验研究[J]. 过程工程学报, 2015, 15(6): 929-934.
[8]	谷德银刘有智祁贵生张芳芳陈小艳. 新型旋转填料床的气相传质特性[J]. , 2015, 15(1): 35-39.
[9]	罗洋盛宇星曹宏斌. 碳酸钠溶液吸收H2S气体的传质性能及数学模型分析[J]. , 2013, 13(6): 931-938.
[10]	高蓬辉纪绍斌张东海刘彦麟周国庆. 强制气流作用下溶液蒸发过程的传质规律[J]. , 2013, 13(6): 915-920.
[11]	李昱喆齐祥明刘天中陈昱. 带波纹隔板的平板式光生物反应器流动特性[J]. , 2010, 10(5): 849-855.
[12]	张晓鸥宋茂谦王长海 Jan-Christer Janson 顾铭. 疏水相互作用与亲水相互作用组合色谱纯化缩宫素[J]. , 2010, 10(3): 598-602.
[13]	都荣礼黄雄斌王昕陈智胜. 侧伸式气液搅拌槽内的搅拌功率与传质性能[J]. , 2008, 8(4): 709-713.
[14]	张强殷德宏樊栓狮王金渠. 聚乙烯己内酰胺的制备与表征[J]. , 2008, 8(3): 540-544.
[15]	谷奎庆;黄海;李红星;刘辉;李建伟;李成岳. 三相连续环流反应器中氧的液相传质过程[J]. , 2007, 7(5): 847-852.