Separation process synthesis by illustration method for disalt system with the same anionic

doi:10.11949/j.issn.0438-1157.20161095

Abstract

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

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

CLC Number:

TQ028.3

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.

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.

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