Simulation and analysis of oxygen production process by six-bed pressure swing adsorption process

被引：0

作者：

Kong D. ^{[1
]}

Zhang Y. ^{[2
]}

Wu W. ^{[1
]}

Ma J. ^{[2
]}

Song Z. ^{[2
]}

Zhang D. ^{[1
]}

Zhang Y. ^{[2
]}

机构：

[1] School of Chemical Engineering and Technology, Tianjin University, Chemical Engineering Research Center, State Key Laboratory of Chemical Engineering, Tianjin

[2] Institute of Medical Support Technology, Academy of System Engineering, Academy of Military Sciences, Tianjin

来源：

Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 12期

关键词：

13X zeolite; adsorbents; adsorption; numerical simulation; oxygen production; pressure swing adsorption;

D O I：

10.11949/0438-1157.20230978

中图分类号：

学科分类号：

摘要：

A six-bed PSA oxygen production process was designed by using 13X zeolite as adsorbent, which can be used in medium-sized medical oxygen concentrators. The adsorption isotherms of nitrogen and oxygen on 13X zeolite were measured by the static volumetric method. A mathematical model of the pressure swing adsorption process was developed, including the mathematical model of adsorption bed and auxiliary equipment. The process was simulated by using Aspen Adsorption software, and the pressure, temperature and solids concentration distribution within the column were analyzed. The simulations demonstrated that the purity of oxygen is as high as 93% with a recovery rate of 46.85%, and the production capacity is 3.42×10-2 m3·h-1·kg-1 under 6 bar (1 bar=0.1 MPa), 8 s step duration and 6 m3·h-1 product flow rate. Compared with the existing two-bed and four-bed processes, the recovery of this process has been improved. The effects of step duration, adsorption pressure, and product flow rate on oxygen concentration, recovery, and productivity were investigated. Moreover, as the product flow range expands to 4.5 m3·h-1to 7.5 m3·h-1, this process can produce oxygen with a purity of more than 90% and can be applied to scenarios with different oxygen purity requirements. © 2023 Materials China. All rights reserved.

引用

页码：4934 / 4944

页数：10

共 39 条

[1] Kansha Y, Kishimoto A, Nakagawa T, Et al., A novel cryogenic air separation process based on self-heat recuperation, Separation and Purification Technology, 77, 3, pp. 389-396, (2011)
[2] Murali R S, Sankarshana T, Sridhar S., Air separation by polymer-based membrane technology, Separation & Purification Reviews, 42, 2, pp. 130-186, (2013)
[3] Chiang A S T, Chung Y L, Cheng C W, Et al., Experimental study on a four-bed PSA air separation process, AIChE Journal, 40, 12, pp. 1976-1982, (1994)
[4] Ruthven D M., Principles of Adsorption and Adsorption Processes, (1984)
[5] Ackley M W., Medical oxygen concentrators: a review of progress in air separation technology, Adsorption, 25, 8, pp. 1437-1474, (2019)
[6] Chin C, Kamin Z, Bahrun M H V, Et al., The production of industrial-grade oxygen from air by pressure swing adsorption, International Journal of Chemical Engineering, 2023, pp. 1-11, (2023)
[7] Bhat A A, Mang H, Rajkumar S, Et al., On-board oxygen generation using high performance molecular sieve, Defence Life Science Journal, 2, 4, (2017)
[8] Zhang Q L, Liu Y S, Li Z Y, Et al., Experimental study on oxygen concentrator with wide product flow rate range: individual parametric effect and process improvement strategy, Separation and Purification Technology, 274, (2021)
[9] Rao V R, Kothare M V, Sircar S., Novel design and performance of a medical oxygen concentrator using a rapid pressure swing adsorption concept, AIChE Journal, 60, 9, pp. 3330-3335, (2014)
[10] Liu Y S, Zhang Q L, Cao Y Z, Et al., Effect of intermittent purge on O<sub>2</sub> production with rapid pressure swing adsorption technology, Adsorption, 27, 2, pp. 181-189, (2021)

← 1 2 3 4 →