同阴离子双盐体系分离过程图解法综合

doi:10.11949/j.issn.0438-1157.20161095

摘要/Abstract

摘要：

氯化钾是我国化肥生产的重要原料，包含氯化钾的无机盐体系的分离过程综合研究具有重要理论意义和应用价值。以NaCl-KCl-H₂O体系为例，提出了一种同阴离子双盐体系分离过程的综合方法。该方法是通过分析同阴离子双盐体系的固液平衡关系，在温度的影响和同离子效应的基础上建立的。其利用图解法直接从相图中寻找可行的分离工艺流程，设计过程简便易行。分别给出NaCl-KCl-H₂O体系的两个和MgCl₂-KCl-H₂O体系的一个过程综合案例，并给出了相应的工艺流程。

关键词: 分离, 综合, 图解法, 相平衡, 同离子效应, 设计

Abstract:

KCl is the important raw material for fertilizer production in China. The separation process synthesis for the salt-water systems with KCl has important theoretical significance and practical application value. With the example of NaCl-KCl-H₂O system, this study has presented a synthesis method for the separation process synthesis of the disalt system with the same anionic. Based on the temperature affect and common-ion effect, this method was built by analyzing the solid-liquid equilibrium. The illustration method were used to determine the separation process form the phase diagram, the design process was very simple and practical. Two synthesis case of NaCl-KCl-H₂O system and one of MgCl₂-KCl-H₂O system were given in the paper, respectively, and the corresponding technological processes were also given.

Key words: separation, synthesis, illustration method, phase equilibrium, common-ion effect, design

中图分类号:

TQ028.3

陈侠, 徐显朕, 伍联营, 胡仰栋. 同阴离子双盐体系分离过程图解法综合[J]. 化工学报, 2017, 68(4): 1452-1458.

CHEN Xia, XU Xianzhen, WU Lianying, HU Yangdong. Separation process synthesis by illustration method for disalt system with the same anionic[J]. CIESC Journal, 2017, 68(4): 1452-1458.

参考文献 30

[1]	马士珍, 苏宝根, 鲍宗必, 等. 干气中烷烃、烯烃新型分离吸附剂的研究进展[J]. 化工学报, 2014, 65(2):396-405.MA S Z, SU B G, BAO Z B, et al. Advances in new type adsorbent for separating alkene from dry gas[J]. CIESC Journal, 2014, 65(2):396-405.
[2]	董宏光, 王涛, 秦立民, 等. 精馏分离序列综合邻域结构的研究[J]. 华东理工大学学报(自然科学版), 2004, 30(1):29-33.DONG H G, WANG T, QIN L M, et al. Neighborhood structure of distillation separation sequence synthesis[J]. Journal of East China University of Science and Technology(Natural Science Edition), 2004, 30(1):29-33.
[3]	王伟文, 王文建, 李建隆. 多组分精馏序列综合的研究进展[J]. 化工进展, 2011, 30:258-262.WANG W W, WANG W J, LI J L. Progress in synthesis of multi-component distillation sequence[J]. Chemical Industry and Engineering Progress, 2011, 30:258-262.
[4]	荣本光, 利梅, 胡仰栋,等. 分离五组分含复杂精馏塔流程的研究[J]. 化工学报, 1996, 47(4):410-420.RONG B G, LI M, HU Y D, et al. Study on distillation flowsheets with complex columns for separation of five-component mixtures[J]. Journal of Chemical Industry and Engineering(China), 1996, 47(4):410-420.
[5]	金鑫. 反应-分离系统能量集成的研究[D]. 青岛:中国海洋大学, 2010. JIN X. Study on the system energy integration of reaction and separation process[D]. Qingdao:Ocean University of China, 2010.
[6]	安维中, 袁希钢. 用于热集成精馏序列综合的改进模拟退火算法[J]. 化工学报, 2005, 56(3):506-510.AN W Z, YUAN X G. Improved simulated annealing algorithm for synthesis of heat integrated distillation sequences[J]. Journal of Chemical Industry and Engineering(China), 2005, 56(3):506-510.
[7]	董丰莲, 袁希钢, 罗祎青. 热集成复杂精馏系统综合的研究[J]. 化工进展, 2007, 26(2):276-280.DONG F L, YUAN X G, LUO Y Q. Research on heat integrated complex distillation system synthesis[J]. Chemical Industry and Engineering Progress, 2007, 26(2):276-280.
[8]	THOMPSON R W, KING C J. Systematic synthesis of separation schemes[J]. AIChE Journal, 1972, 18(5):941-948.
[9]	NADGIR V M, LIU Y A. Studies in chemical process design and synthesis(Ⅴ):A simple heuristic method for systematic synthesis of initial sequences for multicomponent separations[J]. AIChE Journal, 1983, 27(6):926-934.
[10]	STEPHANOPOULOS G, WESTERBERG A W. Studies in process synthesis(Ⅱ):Evolutionary synthesis of optimal process flowsheets[J]. Chemical Engineering Science, 1976, 31(3):195-204.
[11]	DONG H, QIN L, WANG K, et al. Evolutionary computation for realizing distillation separation sequence optimization synthesis[J]. China Petroleum Processing & Petrochemical Technology, 2005, 4:52-59.
[12]	HENDRY J E, HUGHES R R. Generating separation process flowsheets[J]. Chemical Engineering Progress, 1972, 68(6):71-76.
[13]	ISMAIL S R, PISTIKOPOULOS E N, PAPALEXANDRI K P. Synthesis of reactive and combined reactor/separation systems utilizing a mass/heat exchange transfer module[J]. Chemical Engineering Science, 1999, 54(54):2721-2729.
[14]	李玉刚, 王晓红, 郑世清, 等. 含非清晰塔的精馏系统综合[J]. 化工学报, 2008, 59(2):415-419.LI Y G, WANG X H, ZHENG S Q, et al. Synthesis of distillation system considering no-sharp separation[J]. Journal of Chemical Industry and Engineering(China), 2008, 59(2):415-419.
[15]	安维中, 袁希钢. 基于随机优化的热耦合复杂精馏系统的综合(Ⅰ):模型化方法[J]. 化工学报, 2006, 57(7):1591-1598.AN W Z, YUAN X G. Synthesis of thermally coupled complex distillation system based on stochastic optimization (Ⅰ):Problem formulation[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(7):1591-1598.
[16]	安维中, 袁希钢. 基于随机优化的热耦合复杂精馏系统的综合(Ⅱ):计算举例与分析[J]. 化工学报, 2006, 57(7):1599-1604.AN W Z, YUAN X G. Synthesis of thermally coupled complex distillation system based on stochastic optimization (Ⅱ):Example illustration and analysis[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(7):1599-1604.
[17]	张才菁. 二元精馏图解法求理论板数的几个问题[J]. 化学工程, 1982, 5:76-79.ZHANG C J. The binary distillation graphic method to solve several questions about theoretical plate number[J]. Chemical Engineering(China), 1982, 5:76-79.
[18]	孙笑愚, 李洪, 高鑫, 等. 用于反应精馏过程可行性分析的立体图解法[J]. 现代化工, 2013, 33(9):96-99.SUN X Y, LI H, GAO X, et al. Stereo graphical method for feasibility analysis of reactive distillation[J]. Modern Chemical Industry, 2013, 33(9):96-99.
[19]	李刚. 中国钾盐产业现状及发展机遇与挑战[J]. 无机盐工业, 2012, 44(5):1-3.LI G. Present status opportunities and challenges of potassium salt industry in China[J]. Inorganic Chemicals Industry, 2012, 44(5):1-3.
[20]	黄高强, 亓昭英, 武良, 等. 我国钾肥产业发展形势与建议[J]. 现代化工, 2013, 33(12):1-4.HUANG G Q, QI Z Y, WU L, et al. Development situation and suggestions on potash fertilizer industry in China[J]. Modern Chemical Industry, 2013, 33(12):1-4.
[21]	高文远, 王茹, 周龙琴. 钠型斜发沸石对高钙苦卤中钾离子的吸附研究[J]. 化学研究与应用, 2009, 21(2):239-242.GAO W Y, WANG R, ZHOU L Q. Adsorption behaviors of Na-Y clinoptilolite to K+ from bittern containing high Ca2+[J]. Chemical Research & Application, 2009, 21(2):239-242.
[22]	马文奇, 张卫峰, 王利, 等. 世界化肥发展特点和未来趋势分析[J]. 现代化工, 2008, 28(4):1-8.MA W Q, ZHANG W F, WANG L, et al. Analysis of characteristics and trends of development of chemical fertilizer in the world[J]. Modern Chemical Industry, 2008, 28(4):1-8.
[23]	李萌, 刘正阳, 王建平, 等. 我国钾盐资源现状分析及可持续发展建议[J]. 中国矿业, 2016, 25(9):1-7.LI M, LIU Z Y, WANG J P, et al. Current status and sustainable development of potash resources in China[J]. China Mining Magazine, 2016, 25(9):1-7.
[24]	焦鹏程, 刘成林, 颜辉, 等. 新疆罗布泊盐湖深部钾盐找矿新进展[J]. 地质学报, 2014, 88(6):1011-1024.JIAO P C, LIU C L, YAN H, et al. New progress of potassium prospecting in deep salt lake of Lop Nur region in Xinjiang[J]. Acta Geologica Sinica, 2014, 88(6):1011-1024.
[25]	李长红, 李海民. 盐湖卤水、海水中钾盐的提取方法、研究现状及发展趋势[J]. 盐湖研究, 2010, 18(1):64-69.LI C H, LI H M. Status and trends of extracting potassium from salt lake and sea water[J]. Journal of Salt Lake Research, 2010, 18(1):64-69.
[26]	HOWARD S, SILCOCK L. Solubilities of Inorganic and Organic Compounds[M]. New York:Pergamon Press, 1979:359-370.
[27]	APELBLAT A, KORIN E. Temperature dependence of vapor pressures over saturated aqueous solutions at invariant points of the NaCl + KCl + H2O,NaCl + NaNO3 + H2O, KCl + KBr + H2O, KCl + KI + H2O, KCl + KNO3 + H2O, and KCl + K2SO4 + H2O systems[J]. J. Chem. Eng. Data, 2009, 54(5):1619-1624.
[28]	CLYNNE M A, POTTER R W I, HAAS J L J. Solubility of NaCl in aqueous electrolyte solutions from 10 to 100 degrees C[J]. J. Chem. Eng. Data, 1981, 26(4):396-398.
[29]	LIGHTFOOT W J, PRUTTON C F. Equilibria in saturated salt solutions(Ⅱ):The ternary systems CaCl2-MgCl2-H2O, CaCl2-KCl-H2O and MgCl2-KCl-H2O at 75℃[J]. J. Am. Chem. Soc., 1947, 69(9):2098-2100.
[30]	LIGHTFOOT W J, PRUTTON C F. Equilibria in saturated solutions(Ⅰ):The ternary systems CaCl2-MgCl2-H2O, CaCl2-KCl-H2O, and MgCl2-KCl-H2O at 35℃[J]. J. Am. Chem. Soc., 1946, 68(6):1001-1002.