精馏塔变径段布局方式研究
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摘要
对于塔径较大的塔,通常需要采用变径的方式来改善塔内速度和压力的分布,采用fluent软件对四种变径段布局方式下精馏塔内的流场分布进行了数值模拟,计算结果表明:总体而言,对于气液两相接触的精馏塔,变径段采用大端朝下的布局方式比大端朝上的布局方式,在减少壁流效应以及压力变化均匀性方面要好。
For the tower with larger diameter,it is usually necessary to improve the velocity and pressure distribution in the tower by changing the diameter. The flow field distribution in the distillation column with four different sizes is simulated by using fluent software. The results show that,in general,for the distillation column with gas-liquid two-phase contact,the layout of the sizing section with large end-down is more square than that with large end-up. It is better in reducing wall flow effect and uniformity of pressure change.
For the tower with larger diameter,it is usually necessary to improve the velocity and pressure distribution in the tower by changing the diameter. The flow field distribution in the distillation column with four different sizes is simulated by using fluent software. The results show that,in general,for the distillation column with gas-liquid two-phase contact,the layout of the sizing section with large end-down is more square than that with large end-up. It is better in reducing wall flow effect and uniformity of pressure change.
引文
[1]韩联国,杜刚,杜军峰.填料塔技术的现状与发展趋势[J].中氮肥,2009,32(6):32-34.
[2]晏莱,周三平.现代填料塔技术发展现状与展望[J].化工装备技术,2007,28(3):29-34.
[3]王树楹.现代填料塔技术指南[M].北京:中国石化出版社,1998:33-82.
[4] Cao Y,Hu J,Jia H,et al.Comparison of pressureswing distillation and extractive distillation with varieddiameter column in economics and dynamic control[J].Journal of Process Control,2017(49):9-25.
[5]徐松浩.乙酸丙酯生产过程中醇水分离精馏塔:201320459769.0[P].2014-02-26.
[2]晏莱,周三平.现代填料塔技术发展现状与展望[J].化工装备技术,2007,28(3):29-34.
[3]王树楹.现代填料塔技术指南[M].北京:中国石化出版社,1998:33-82.
[4] Cao Y,Hu J,Jia H,et al.Comparison of pressureswing distillation and extractive distillation with varieddiameter column in economics and dynamic control[J].Journal of Process Control,2017(49):9-25.
[5]徐松浩.乙酸丙酯生产过程中醇水分离精馏塔:201320459769.0[P].2014-02-26.