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  • ISSN 1006-3080
  • CN 31-1691/TQ

微通道中萃取法分离提取溴素

王丹 赵方 于建国 陈杭

王丹, 赵方, 于建国, 陈杭. 微通道中萃取法分离提取溴素[J]. 华东理工大学学报(自然科学版). doi: 10.14135/j.cnki.1006-3080.20210617003
引用本文: 王丹, 赵方, 于建国, 陈杭. 微通道中萃取法分离提取溴素[J]. 华东理工大学学报(自然科学版). doi: 10.14135/j.cnki.1006-3080.20210617003
WANG Dan, ZHAO Fang, YU Jianguo, CHEN Hang. Recovery of Bromine by Extraction Method in Microchannels[J]. Journal of East China University of Science and Technology. doi: 10.14135/j.cnki.1006-3080.20210617003
Citation: WANG Dan, ZHAO Fang, YU Jianguo, CHEN Hang. Recovery of Bromine by Extraction Method in Microchannels[J]. Journal of East China University of Science and Technology. doi: 10.14135/j.cnki.1006-3080.20210617003

微通道中萃取法分离提取溴素

doi: 10.14135/j.cnki.1006-3080.20210617003
基金项目: 国家重点基础研究发展计划(2018YFC0604800)
详细信息
    作者简介:

    王丹:王 丹(1993年),女,河北石家庄人,硕士生,主要研究方向:分离工程。E-mail:sevendawson@163.com

    通讯作者:

    赵 方, E-mail:Fzhaol@ecust.edu.cn

    于建国,E-mail:jgyu@ecust.edu.cn

  • 中图分类号: TQ03.39

Recovery of Bromine by Extraction Method in Microchannels

  • 摘要: 中南半岛岩盐矿提钾后老卤中溴离子含量达2000~3000 mg/L,是极具价值的制溴原料。有效利用岩盐矿伴生溴资源有利于提高岩盐矿资源综合利用价值,缓解我国溴资源短缺现状,对经济、社会及环境都有重要意义。本文以含溴模拟老卤为原料,基于微化工技术,搭建了毛细管式微通道装置,开展微萃取法分离溴素的研究。以量子化学计算与实验相结合筛选萃取剂,综合萃取率以及溴素损失率,选定正十二烷作为萃取剂。利用正交试验方法确定微萃取过程最佳工艺条件,在温度25 ºC,油水相比1,三通内孔直径0.25 mm,传质管内径0.5 mm,油水总流量0.1 mL/min,和停留时间70 s的情况下,可实现78.70%的溴素萃取率。

     

  • 图  1  微通道萃取装置图

    Figure  1.  Diagram of the microchannel extraction device

    1-Injection pump; 2-T-shaped three-way; 3-Digital display constant temperature water bath; 4-Collection device

    图  2  不同温度下微萃取过程溴素萃取率与停留时间关系图

    Figure  2.  Relationship between the extraction ratio of bromine and residence time under different temperatures in the microextraction process

    图  3  不同温度下微萃取过程溴素损失率与停留时间关系图

    Figure  3.  Relationship between the loss ratio of elemental bromine and residence time under different temperatures in the microextraction process

    表  1  含溴模拟卤水组成

    Table  1.   Composition of simulated brine

    Materialsw/%
    MgCl227
    NaCl+KCl2~3
    Br20.24
    NaBr0.06
    下载: 导出CSV

    表  2  量子化学计算得到的溴素在溶剂中的溶解自由能

    Table  2.   Solvation free energy of bromine in various solvents obtained by quantum chemical calculations

    Solvent$ {G}_{B4}^{\mathrm{\Theta }} $/(kJ/mol)$ {G}_{B3}^{\mathrm{\Theta }} $/(kJ/mol)$ {\mathrm{\Delta }G}_{B}^{\mathrm{\Theta }} $/(kJ/mol)
    Water−13504347.81−13504352.46−4.64
    Butyl acetate−13504347.78−13504363.48−15.69
    1-bromooctane−13504347.78−13504363.57−15.79
    Bromododecane−13504347.78−13504364.23−16.45
    1-bromoheptane−13504347.80−13504360.09−12.29
    Heptane−13504347.81−13504364.07−16.26
    N-dodecane−13504347.81−13504363.51−15.70
    Sulfonated kerosene−13504347.79−13504364.30−16.50
    下载: 导出CSV

    表  3  萃取剂筛选

    Table  3.   Screening of extractant

    Solvent$ {\mathit{E}}_{\mathit{w}} $/%$ {\mathit{E}}_{\mathit{o}} $/%$ {\mathit{Q}}_{\mathit{B}\mathit{r}} $/%Flash point/ºCPrice(t/CNY)
    Hexane87.8478.539.31−23ºC以下11000
    Heptane87.9278.819.11−4.08100
    Octane86.9778.208.7715.66300
    Nonane87.8279.628.2030.015000
    N-dodecane86.4475.9210.5273.928000
    Bromododecane93.3869.7023.6811030000
    Bromoheptane94.1382.3411.796040000
    Benzyl propionate91.1872.6018.58160
    Sulfonated kerosene92.222.7789.438000
    下载: 导出CSV

    表  4  微萃取正交实验因素和水平表

    Table  4.   Orthogonal design factor and level table for microextraction

    FactorA
    /ºC
    B
    /(O/A)
    C
    /mm
    D
    /mm
    Test number12010.751.0
    2351.50.500.8
    35020.250.5
    下载: 导出CSV

    表  5  微萃取正交实验结果

    Table  5.   Microextraction results of orthogonal experimental design

    NumberFactor$ {\mathit{E}}_{\mathit{w}} $
    /%
    $ {\mathit{Q}}_{\mathit{B}\mathit{r}} $
    /%
    A
    /ºC
    B
    /(O/A)
    C
    /mm
    D
    /mm
    1
    2
    3
    2010.751.078.677.25
    201.50.500.886.5737.89
    2020.250.591.2240.38
    43510.500.587.0816.87
    5351.50.251.085.4724.41
    63520.750.888.8541.11
    75010.250.887.5727.64
    8501.50.750.587.6959.20
    95020.501.088.3260.70
    下载: 导出CSV

    表  6  微萃取溴素正交实验结果极差分析

    Table  6.   Range analysis for orthogonal design

    FactorA
    /ºC
    B
    /(O/A)
    C
    /mm
    D
    /mm
    k1
    k2
    k3
    256.46253.32255.21252.46
    261.40259.73261.97262.99
    263.58268.39264.26265.99
    R2.375.023.024.51
    Excellent levelA3B3C3D3
    下载: 导出CSV
  • [1] WANG Q, WU J, ZHAO G, et al. Monitor application of multi-electrochemical sensor in extracting bromine from seawater[J]. Royal Society Open Science, 2019, 6(12): 191138. doi: 10.1098/rsos.191138
    [2] 公方薪, 董勇, 王泽武, 等. 溴资源分布及开发研究概述[J]. 山东化工, 2017, 46(20): 50-52. doi: 10.3969/j.issn.1008-021X.2017.20.022
    [3] 柴子华, 李明明. 我国溴工业生产技术现状与展望[J]. 盐科学与化工, 2018, 47(6): 1-4. doi: 10.3969/j.issn.2096-3408.2018.06.001
    [4] 金婷婷, 裘俊红. 溴离子印迹树脂的制备及性能研究[J]. 浙江水利科技, 2014, 42(03): 40-42+49.
    [5] 张晓, 纪志永, 汪婧, 等. 电氧化法地下卤水提溴探究及条件优化[J]. 化工学报, 2021, 72(04): 2123-2131.
    [6] AOTA A, NONAKA M, HIBARA A. Countercurrent laminar microflow for highly efficient solvent extraction[J]. Angewandte Chemie-International Edition, 2007, 46(6): 878-880. doi: 10.1002/anie.200600122
    [7] REZAEE M, ASSADI Y. Determination of organic compounds in water using dispersive liquid–liquid microextraction[J]. Journal of Chromatography A, 2006, 1116(1-2): 1-9. doi: 10.1016/j.chroma.2006.03.007
    [8] DAREKAR M, SINGH K K, MUKHOPADHYAY S. Solvent extraction in microbore tubes with UNPS–TBP in dodecane system[J]. Separation and Purification Technology, 2014, 128: 96-105. doi: 10.1016/j.seppur.2014.03.002
    [9] HEITLER W, LONDON F. Wechselwirkung neutraler atome und homöopolare bindung nach der quantenmechanik[J]. Zeitschrift für Physik, 1927, 44(6-7): 455-472.
    [10] SHIVAKUMAR D, DENG Y Q, ROUX BENOÎT. Computations of absolute solvation free energies of small molecules using explicit and implicit solvent model[J]. Journal of chemical theory and computation, 2009, 5(4): 919-930. doi: 10.1021/ct800445x
    [11] JUNMING H, ANDREAS K, COOTE M L. Comment on the correct use of continuum solvent models[J]. The journal of physical chemistry. A, 2010, 114(51): 13442-13444. doi: 10.1021/jp107136j
    [12] RAPHAEL F R, ALEKSANDR V M, CHRISTOPHER J C, et al. Use of solution-phase vibrational frequencies in continuum models for the free energy of solvation[J]. Journal of Physical Chemistry B, 2011, 115(49): 14556-14562. doi: 10.1021/jp205508z
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出版历程
  • 收稿日期:  2021-06-17
  • 网络出版日期:  2021-11-16

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