复分解法硫酸钾生产工艺中硫酸钾和硫酸铵的三元相图研究 - 201703 - 肥料与健康
复分解法硫酸钾生产工艺中硫酸钾和硫酸铵的三元相图研究
Study of Ternary Phase Diagram of Potassium Sulfate and Ammonium Sulfate in the Process of Potassium Sulfate Production by Double Decomposition Process
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摘要:

为了研究复分解法硫酸钾生产工艺的反应原理,建立了相图测试平台,确定了体系平衡时间,标定了平台测试精度。基于测试平台,测试和绘制了30 ℃和60 ℃下硫酸钾和硫酸铵的三元体系相图,并对饱和液相线进行拟合计算。确定硫酸钾与硫酸铵在相图中不存在三相点和单盐结晶区,而是形成了组分连续的硫酸钾铵固溶体结晶区,从理论上揭示了复分解法硫酸钾生产工艺不能在一步反应过程中生成完全纯净的硫酸钾产品。

关键词:
Abstract:

In order to study the reaction mechanism of production of K2SO4 by double decomposition process, a phase diagram test system is established and its equilibrium time and measuring accuracy are determined. By this system, ternary phase diagram of K2SO4 and (NH4)2SO4 at temperatures of 30 ℃ and 60 ℃ are measured and completed, and saturated liquid phase lines and their fitting calculation are figured out. It is found that K2SO4 and (NH4)2SO4 do not have triple-point and crystalline region of pure salt in their ternary phase diagram, there is only a component-continuous solid solution crystalline region formed. It has revealed theoretically that pure K2SO4 cannot be produced in one-step reaction by double decomposition process.

Keyword:
ckwx 参考文献

1

何红丽 我国硫酸工业的现状及未来发展展望盐湖研究20023617110.3969/j.issn.1008-858X.2002.03.011

何红丽.我国硫酸工业的现状及未来发展展望[J].盐湖研究,2002(3):61-71.

2

蔡文江 国内硫酸钾生产现状及展望化工时刊199551921

蔡文江.国内硫酸钾生产现状及展望[J].化工时刊,1995(5):19-21.

3

陈代伟 郭亚飞 邓天龙 硫酸钾生产工艺研究现状无机盐工业201444710.3969/j.issn.1006-4990.2014.04.002

陈代伟,郭亚飞,邓天龙.硫酸钾生产工艺研究现状[J].无机盐工业,2014(4):4-7.

4

杨荣华 张恭孝 硫酸钾的生产方法研究进展及方向无机盐工业2008981010.3969/j.issn.1006-4990.2008.09.003

杨荣华,张恭孝.硫酸钾的生产方法研究进展及方向[J].无机盐工业,2008(9):8-10.

5

王惠媛 许松林 硫酸钾生产技术现状化肥工业20051293110.3969/j.issn.1006-7779.2005.01.006

王惠媛,许松林.硫酸钾生产技术现状[J].化肥工业,2005(1):29-31.

6

祝延令 赵继善 梁济 氯化钾-硫酸铵复分解法制备硫酸钾新工艺试验研究化肥工业20004222810.3969/j.issn.1006-7779.2000.04.005

祝延令,赵继善,梁济,等.氯化钾-硫酸铵复分解法制备硫酸钾新工艺试验研究[J].化肥工业,2000(4):22-28.

7

祝延令 赵继善 梁济 青岗钾肥厂试车小结化肥工业199753638

祝延令,赵继善,梁济.青岗钾肥厂试车小结[J].化肥工业,1997(5):36-38.

8

刘光启 马连湘 刘杰 化学化工物性数据手册:无机卷北京化学工业出版社2002423

刘光启,马连湘,刘杰.化学化工物性数据手册:无机卷[M].北京:化学工业出版社,2002:423.

9

MULLINJ W Crystallization4th edOxfordButterworth Heinemann2001:501

MULLIN J W. Crystallization[M]. 4th ed. Oxford:Butterworth Heinemann,2001:501.

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