表面活性剂对光卤石中氯化钾结晶介稳区和诱导期的影响
收稿日期: 2020-01-14
网络出版日期: 2020-06-12
基金资助
重点研发与转化计划-科技合作专项(基金号:2018-HZ-818)
Effect of surfactants on metastable zone and induction period of KCl crystals in carnallite
Received date: 2020-01-14
Online published: 2020-06-12
利用在线监测系统测定了光卤石中氯化钾的溶解度,并采用Van′t Hoff方程对其溶解度数据进行拟合。探讨了不同类型的表面活性剂及其含量对光卤石中氯化钾结晶介稳区宽度的影响以及在不同过饱和度下表面活性剂对诱导期的影响,并结合诱导期数据计算了固-液界面张力γ值。结果表明:Van′t Hoff方程能够对氯化钾溶解度很好地拟合;3种不同类型的表面活性剂都使介稳区宽度变宽;加入阴、阳离子表面活性剂,随着其含量的增大介稳区变宽,而加入非离子表面活性剂,其含量对介稳区宽度的影响不大。在恒定温度下,随着过饱和度增大,结晶诱导期时间变短,而加入表面活性剂使诱导期时间变长。
张莉媛 , 王刚 , 齐美玲 , 解玉龙 . 表面活性剂对光卤石中氯化钾结晶介稳区和诱导期的影响[J]. 无机盐工业, 2020 , 52(6) : 46 -49 . DOI: 10.11962/1006-4990.2019-0473
The solubility of potassium chloride in carnallite was measured by on-line monitoring system,and the solubility data was fitted by Van′t Hoff equation.The effects of different surfactants and contents on the metastable zone width of potassium chloride in carnallite,and the effects of surfactants on the induction period under different supersaturation were investigated respectively.The solid-liquid interfacial tension γ value was calculated by combining the induction period data.The results showed that the Van′t Hoff equation can fit well to the solubility of potassium chloride.Three surfactants broadened the width of the metastable zone.When the content of anionic and cationic surfactants was increased,the metastable zone width was also broadened.However,the content of non-ionic surfactant had little effect on the metastable zone width.At constant tempera-ture,with the increase of supersaturation,the induction period of crystallization became shorter.However,the addition of sur-factant made the induction period longer.
[1] | 赵玉峰, 李文善 . 光卤石的分解母液中氯化镁含量对结晶器生产中氯化钾粒度的影响探究[J].化工管理, 2016(33):57. |
[2] | 韩冰, 唐娜, 沙作良 , 等. 光卤石分解制氯化钾结晶机理研究[J]. 盐业与化工, 2008,37(2):13-16. |
[3] | 杨红梅 . 生产氯化钾的几种工艺分析[J]. 海湖盐与化工, 2004,33(2):4-7. |
[4] | 周玲, 沙作良, 唐娜 , 等. 光卤石分解制取氯化钾结晶过程的研究[J]. 盐业与化工, 2009,38(4):13-18. |
[5] | 保英莲, 张志强 . 光卤石分解制取KCl结晶过饱和度影响的研究[J]. 盐业与化工, 2014,43(9):15-18. |
[6] | 刘欣玉, 孙杰, 罗义芬 , 等. ADN的溶解度、结晶介稳区及诱导期的测定[J]. 含能材料, 2019,27(9):766-772. |
[7] | 段潇潇, 李军, 任永胜 , 等. 磷酸二氢钠结晶介稳区宽度的研究[J]. 磷肥与复肥, 2010,25(4):23-24. |
[8] | 陆杰, 王静康 . 反应结晶过程研究(Ⅱ)——二次过程及机理分析[J]. 化学工业与工程, 1999,16(1):58-61. |
[9] | Barrett P, Glennon B . Characterizing the metastable zone width and solubility curve using Lasentec FBRM and PVM[J]. Chemical En-gineering Research & Design, 2002,80(7):799-805. |
[10] | 邹艳爽 . 光卤石热分解制备氯化钾技术研究[D]. 天津:天津科技大学, 2015. |
[11] | 韩冰, 王学魁, 沙作良 , 等. KCl-MgCl2-H2O体系中氯化钾溶解度的预测[J]. 盐业与化工, 2009,38(4):4-7. |
[12] | 王建成 . 溶析结晶法分离水溶液中KCl的温度效应研究[J]. 山东轻工业学院学报:自然科学版, 1992,6(4):36-40. |
[13] | Zhu L, Wang L Y, Li X C , et al. Experimental determination and correlation of the solubility of 4-hydroxy-2,5-dimethyl-3(2H)-furanone(DMHF) in six different solvents[J]. Journal of Chemical Thermodynamics, 2015,91:369-377. |
[14] | Yang Y . Solubility determination and thermodynamic modelling of allisartan isoproxil in different binary solvent mixtures from T=(278.15 to 313.15) K and mixing properties of solutions[J]. Journal of Chemical Thermodynamics, 2016,103:432-445. |
[15] | 李军, 王燕, 张凌之 . 表面活性剂对氟硅酸钠(钾)在磷酸介质中结晶介稳区宽度的影响[J]. 四川大学学报:工程科学版, 2002,34(3):53-56. |
[16] | 杨宗璐, 鲍慈光 . 表面活性剂对结晶过程影响的研究进展[J].云南化工, 1994(3):25-29. |
[17] | Lenka M, Sarkar D . Determination of metastable zone width,induc-tion period and primary nucleation kinetics for cooling crystalliza-tion of l-asparaginenohydrate[J]. Journal of Crystal Growth, 2014,408(1):85-90. |
[18] | ?′Ciardhá C T . Estimation of the nucleation kinetics for the anti-solvent crystallisation of paracetamol in methanol/water solut-ions[J]. Journal of Crystal Growth, 2011,328(1):50-57. |
[19] | Sangwal K . Novel approach to analyze metastable aone width deter-mined by the polythermal method:Physical interpretation of vari-ous parameters[J]. Crystal Growth & Design, 2009,9(2):942-950. |
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