Numerical Simulation of Oxygen Generation Characteristics of Ω-Shaped Step Radial Flow Pressure Swing Adsorbent Bed

被引：0
|
作者：
Feng M.-J. [1 ]
Xu F.-S. [1 ]
Zhou S.-L. [1 ]
机构：
[1] School of Metallurgy, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2020年 / 41卷 / 04期
关键词：
Adsorption bed; O[!sub]2[!/sub] concentration; Pressure swing adsorption; PSA oxygen production; Radial flow;
D O I：
10.12068/j.issn.1005-3026.2020.04.011
中图分类号：
学科分类号：
摘要：
In order to improve the performance of PSA oxygen production equipment, an Ω-shaped step radial flow adsorption bed was designed. Using Fluent 16. 0 software, the change rule of the flow field, concentration field, oxygen production characteristics and bed penetration time of the adsorption bed were studied by numerical simulations, which were further compared with those in the traditional Π radial flow adsorption bed. The results showed that the penetration time of the Ω-shaped step radial flow adsorption bed is significantly longer than that of the Π-shaped one under the same conditions and the flow unevenness area is greatly reduced. Moreover, for the Ω-shaped bed, the O2 molar fraction of the production gas can reach 91.8%, which is only 87.1% for the Π-shaped one. There is a great difference in the shape of the high molar fraction O2 zone in the two types of adsorption beds during adsorption stage. The high molar fraction O2 zone moves forward in a near cup shape in the Ω-shaped bed, while it becomes a long cone shape in the Π-shaped one. © 2020, Editorial Department of Journal of Northeastern University. All right reserved.
引用
收藏
页码：516 / 520
页数：4
相关论文
共 12 条
  • [1] Zhu X.-Q., Liu Y.-S., Yang X., Et al., Progress of modified adsorbent and pressure swing adsorption for oxygen production in China, Chemical Industry and Engineering Progress, 34, 1, pp. 19-25, (2015)
  • [2] Ebrahimi A., Meratizaman M., Reyhani H.A., Et al., Energetic, exergetic and economic assessment of oxygen production from two columns cryogenic air separation unit, Energy, 90, 2, pp. 1298-1316, (2015)
  • [3] Zheng X.G., Liu Y.S., Liu W.H., Two-dimensional modeling of the transport phenomena in the adsorber during pressure swing adsorption process, Industrial & Engineering Chemistry Research, 49, 22, pp. 11814-11824, (2010)
  • [4] Kwapinski W., Salem K., Mewes D., Et al., Thermal and flow effects during adsorption in conventional, diluted and annular packed beds, Chemical Engineering Science, 65, 14, pp. 4250-4260, (2010)
  • [5] Chai S.W., Kothare M.V., Sircar S., Rapid pressure swing adsorption for reduction of bed size factor of a medical oxygen concentrator, Industrial & Engineering Chemistry Research, 50, 14, pp. 8703-8710, (2011)
  • [6] Yaghoobpour E., Ahmadpour A., Farhadian N., Et al., Molecular dynamics simulation of carbon molecular sieve preparation for air separation, Korean Journal of Chemical Engineering, 32, 3, pp. 494-500, (2015)
  • [7] Beeyani A.K., Singh K., Vyas R.K., Et al., Parametric studies and simulation of PSA process for oxygen production from air, Polish Journal of Chemical Technology, 12, 2, pp. 18-28, (2010)
  • [8] Li Y., Si H.Q., Wang B., Et al., Optimization design research of air flow distribution in vertical radial flow adsorbers, Korean Journal of Chemical Engineering, 35, 4, pp. 835-846, (2018)
  • [9] Dai Z.S., Yu M., Rui D.Z., Et al., Investigation on a vertical radial flow adsorber designed by a novel parallel connection method, Chinese Journal of Chemical Engineering, 26, 3, pp. 484-493, (2018)
  • [10] Moran A., Talu O., Role of pressure drop on rapid pressure swing adsorption performance, Industrial & Engineering Chemistry Research, 56, 19, pp. 5715-5723, (2017)
12