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[1]罗 影,龙秉文,钱子隆,等.降温模式对磷酸一铵结晶动力学的影响[J].武汉工程大学学报,2016,38(3):213-217.[doi:10. 3969/j. issn. 1674?2869. 2016. 03. 002]
 LUO Ying,LONG Bingwen,QIAN Zilong,et al.Effect of Cooling Mode on the Growth Kinetics of Mono-Ammonium Phosphate[J].Journal of Wuhan Institute of Technology,2016,38(3):213-217.[doi:10. 3969/j. issn. 1674?2869. 2016. 03. 002]
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降温模式对磷酸一铵结晶动力学的影响(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
38
期数:
2016年3期
页码:
213-217
栏目:
化学与化学工程
出版日期:
2016-06-22

文章信息/Info

Title:
Effect of Cooling Mode on the Growth Kinetics of Mono-Ammonium Phosphate
作者:
罗 影12龙秉文12钱子隆12范益堃12柯文昌12丁一刚12*
1. 武汉工程大学化工与制药学院,湖北 武汉 430074;2. 绿色化工过程教育部重点实验室(武汉工程大学),湖北 武汉 430074
Author(s):
LUO Ying12 LONG Bingwen12 QIAN Zilong 12 FAN Yikun12 KE Wenchang12DING Yigang12*
1. School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430074, China; 2. Key Laboratory of Green Chemical Process (Wuhan Institute of Technology) , Ministry of Education,Wuhan 430074, China
关键词:
磷酸一铵结晶降温模式结晶动力学
Keywords:
mono-ammonium phosphate crystallization cooling mode crystal kinetics
分类号:
TQ126.39
DOI:
10. 3969/j. issn. 1674?2869. 2016. 03. 002
文献标志码:
A
摘要:
冷却结晶是磷酸一铵生产过程中重要的分离提纯步骤. 研究了线性降温、自然降温、先恒温再降温以及阶梯降温四种不同降温模式下磷酸一铵的结晶过程,建立了描述该过程的模型,并通过测定结晶过程的浓度衰减数得到了四种模式下的磷酸一铵的生长动力学参数. 结果表明,不同降温模式下的磷酸一铵的生长级数都为1,但是质量沉积常数受降温模式影响较大,其中自然降温下质量沉积常数的值最大. 所得晶体的粒径分布结果也表明线性降温模式下磷酸一铵晶体的平均粒径最大.
Abstract:
Cooling crystallization is an important separation and purification process in the production of mono-ammonium phosphate (MAP). The crystallization of MAP under four modes of linear, natural, isothermal and stepping cooling was studied and the model of the process was established. The decline of concentration of MAP in the crystallization process was measured and the growth kinetic parameters of the four cooling modes were estimated. The results show that the growth order of MAP in four cooling modes is 1, while the value of mass deposit constant is significantly affected by the cooling modes, which is the biggest under the nature cooling mode. The analysis of the particle size distribution of MAP products indicates that the average diameter of MAP crystal is the biggest under the linear cooling mode.

参考文献/References:

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更新日期/Last Update: 2016-06-23