氯化钾间歇冷却结晶生长规律及粒度控制实验研究

doi:10.11962/1006-4990.2018-0512

无机盐工业 ›› 2019, Vol. 51 ›› Issue (8): 33-36.doi: 10.11962/1006-4990.2018-0512

氯化钾间歇冷却结晶生长规律及粒度控制实验研究

李志强,杨立斌(),沙作良,王彦飞,朱亮,赵晓昱

天津科技大学化工与材料学院,天津市海洋资源与化学重点实验室,天津市海洋化工工程技术中心,天津 300457

收稿日期:2019-02-13 出版日期:2019-08-10 发布日期:2020-06-15
通讯作者: 杨立斌
作者简介:李志强(1991— ),男,硕士,研究专业方向为工业结晶。
基金资助:
青海科技厅科技支撑计划重大项目(2015-GX-109A);教育部科研创新团队培育计划([2013]373);天津市高等学校创新团队培养计划(TD12-5004)

Experimental research on growth and crystal size control of potassium chloride in batch cooling crystallization

Li Zhiqiang,Yang Libin(),Sha Zuoliang,Wang Yanfei,Zhu Liang,Zhao Xiaoyu

College of Chemical Engineering and Materials Science,Tianjin University of Science and Technology,Tianjin Key Laboratory of Marine Resources and Chemistry,Tianjin Marine Chemical Engineering Technology Center,Tianjin 300457,China

Received:2019-02-13 Online:2019-08-10 Published:2020-06-15
Contact: Yang Libin

摘要/Abstract

摘要：

采用聚焦光束反射测量技术（FBRM）考察了氯化钾（KCl）间歇冷却结晶过程中晶体成核和生长规律,重点研究了降温速率对KCl水溶液冷却时产生过饱和度的影响,以及添加晶种的相关条件（如晶种粒径和添加量等因素）与KCl晶体产品粒度的关系。同时,采用直接冷却刺激起晶产生“晶种”,并控制其生长达到控制晶体产品粒度的目的。结果表明,在添加晶种条件下,程序降温过程产生的低过饱和度不易引起爆发成核,且晶种的添加量决定着晶体产品的平均粒度与理想生长模型的偏差。另外,降温速率是冷却刺激起晶产生“晶种”粒径的关键因素。

关键词: 氯化钾晶种, 晶体生长, 程序降温, 粒度控制

Abstract:

The crystal nucleation and growth of potassium chloride（KCl） in the batch cooling were investigated by focused beam reflectometry（FBRM）.The effects of cooling rate on the supersaturation of KCl aqueous solution during cooling,and the relationship between the relevant conditions of seed addition（such as the seed particle size and the addition dosage） and the particle size of the KCl crystal product were studied.Meanwhile,"seed" was produced by crystallization stimulated by direct cooling and was controlled its growth to achieve the purpose of controlling the crystal product size.Results showed that the low supersaturation generated in the programmed cooling process was not easy to cause explosive nucleation under the condition of adding seed,and the addition dosage of seed determined the deviation of the average particle size of the crystal product from the ideal growth model.In addition,the cooling rate was a key factor in determining the particle size of the“seed” obtained by cooling-stimulated crystallization.

Key words: potassium chloride seed, crystal growth, programmed cooling, particle size control

中图分类号:

TQ131.13

李志强,杨立斌,沙作良,王彦飞,朱亮,赵晓昱. 氯化钾间歇冷却结晶生长规律及粒度控制实验研究[J]. 无机盐工业, 2019, 51(8): 33-36.

Li Zhiqiang,Yang Libin,Sha Zuoliang,Wang Yanfei,Zhu Liang,Zhao Xiaoyu. Experimental research on growth and crystal size control of potassium chloride in batch cooling crystallization[J]. Inorganic Chemicals Industry, 2019, 51(8): 33-36.

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参考文献 12

[1]	Tseng Y T, Ward J D . Critical seed loading from nucleation kinetics[J]. Aiche Journal, 2014,60(5):1645-1653.
[2]	Nývlt J . Seeding and its effect on size of product crystals in a batch crystallizer[J]. Collect.Czech.Chem.Commum., 1976,41(2):342-349.
[3]	赵瑞祥, 安永峰 . 添加晶种对氟硅酸钠结晶的影响[J]. 无机盐工业, 2009,41(12):46-48.
[4]	Seki H, Ye S . Robust optimal temperature swing operations for size control of seeded batch cooling crystallization[J]. Chemical Engineering Science, 2015,133:16-23.
[5]	Simone E, Zhang W, Nagy Z K . Application of process analytical technology-based feedback control strategies to improve purity and size distribution in biopharmaceutical crystallization[J]. Crystal Growth & Design, 2015,15(6):2908-2919.
[6]	JagadeshD, Kubota N, Yokota M , et al. Seeding effect on batch cry-stallization of potassium sulfate under natural cooling mode and asimple design method of crystallizer[J]. Journal of Chemical Engineering of Japan, 1999,32(4):514-520. doi: 10.1252/jcej.32.514
[7]	Doki N, Kubota N, Yokota M , et al. Determination of critical seed loading ratio for the production of crystals of uni-modal size distrbu-tion in batch cooling crystallization of potassium alum[J]. Journal of Chemical Engineering of Japan, 2002,35(7):670-676.
[8]	Jagadesh D, Kubota N, Yokota M , et al. Large and mono-sized product crystals from natural cooling mode batch crystallizer[J]. Jo-urnal of Chemical Engineering of Japan, 1996,29(5):865-873.
[9]	杨静, 陈明洋, 许史杰 , 等. 无机盐晶体形貌调控研究进展[J], 无机盐工业, 2018,50(8):11-15.
[10]	丁绪淮, 谈遒 . 工业结晶[M]. 北京: 化学工业出版社, 1985: 74.
[11]	Mohameed H Abu -Jdayil A B, Khateeb M A . Effect of cooling rate on unseeded batch crystallization of KCl[J]. Chemical Engineering & Processing Process Intensification, 2002,41(4):297-302.
[12]	Garside J . Industrial crystallization from solution[J]. Chemical Engineering Science, 1985,40(1):3-26. doi: 10.1016/0009-2509(85)85043-0

L_s/μm	m_s/g
123.7	0.18	0.31	0.43	0.62	1.54	2.81	4.08
215.2	0.77	0.99	1.30	1.77	2.51	3.06	3.77
324.7	0.40	0.82	1.47	2.86	3.67	5.10	8.16

降温方式	临界晶种浓度C_c/（g·g^-1）
降温方式	123.7 μm	215.2 μm	324.7 μm
程序降温	0.021 2	0.048 4	0.080 0
自然降温	0.021 2	0.063 8	0.140 0

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氯化钾间歇冷却结晶生长规律及粒度控制实验研究

Experimental research on growth and crystal size control of potassium chloride in batch cooling crystallization

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Experimental research on growth and crystal size control of potassium chloride in batch cooling crystallization

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