[1]祝显强,孙媛,孙宪航.变压吸附制氧过程传质特性数值分析[J].常州大学学报(自然科学版),2024,36(01):60-68.[doi:10.3969/j.issn.2095-0411.2024.01.007]
　ZHU Xianqiang,SUN Yuan,SUN Xianhang.Numerical analysis of mass transfer characteristics during pressure swing adsorption oxygen production process[J].Journal of Changzhou University(Natural Science Edition),2024,36(01):60-68.[doi:10.3969/j.issn.2095-0411.2024.01.007]
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变压吸附制氧过程传质特性数值分析()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第36卷
期数:
2024年01期
页码:
60-68
栏目:
石油与天然气工程
出版日期:
2024-01-28

文章信息/Info

Title:
Numerical analysis of mass transfer characteristics during pressure swing adsorption oxygen production process
文章编号:
2095-0411(2024)01-0060-09
作者:
祝显强; 孙媛; 孙宪航
常州大学 石油与天然气工程学院, 江苏 常州 213164
Author(s):
ZHU Xianqiang;  SUN Yuan;  SUN Xianhang
School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou 213164, China
关键词:
变压吸附;  吸附时间;  浓度波;  制氧过程;  数值模拟
Keywords:
pressure swing adsorption;  adsorption time;  concentration wave;  oxygen production;  numerical simulation
分类号:
TQ 028
DOI:
10.3969/j.issn.2095-0411.2024.01.007
文献标志码:
A
摘要:
研究了变压吸附制氧过程中吸附时间对制氧性能的影响,提出了利用浓度波传递模型分析变压吸附制氧过程传质特性、计算最佳吸附时间的方法。结果表明,吸附过程中吸附床内氮气浓度波形状随着时间和轴向位置而变化,理想传热传质条件下,氮气浓度波传递速度比实际吸附过程浓度波传递速度快,实际过程中由于传质和传热阻力,浓度波传递速度减少26%。基于浓度波传递模型计算的最佳吸附时间与实验值误差在0.5 s以内。
Abstract:
The effect of adsorption time on the performance of pressure swing adsorption(PSA)oxygen production process was experimentally investigated and a concentration wave model was proposed for analyzing the mass transfer characteristics and calculating the optimal adsorption time during the PSA process. The results showed that the shape of N2 loading profile at adsorption step changed with time and axial position, and the propagation velocity of the N2 concentration wave with ideal conditions was greater than the practical propagation velocity. The limited heat and mass transfer resistance slowed down the propagation of the concentration wave during the practical adsorption process, and the reduction degree of the concentration wave velocity was about 26%. The errors between the optimal adsorption time calculated though the concentration wave model and the experimental adsorption time were within 0.5 s.

参考文献/References:

[1] ACKLEY M W. Medical oxygen concentrators: a review of progress in air separation technology[J]. Adsorption, 2019, 25(8): 1437-1474.
[2] CHAI S W, KOTHARE M V, SIRCAR S. Rapid pressure swing adsorption for reduction of bed size factor of a medical oxygen concentrator[J]. Industrial & Engineering Chemistry Research, 2011, 50(14): 8703-8710.
[3] ZHU X Q, LIU Y S, YANG X, et al. Study of a novel rapid vacuum pressure swing adsorption process with intermediate gas pressurization for producing oxygen[J]. Adsorption, 2017, 23(1): 175-184.
[4] 祝显强, 刘应书, 曹永正, 等. 高原低气压环境局部弥散供氧特性[J]. 应用基础与工程科学学报, 2016, 24(2): 378-390.
[5] 刘应书, 祝显强, 曹永正, 等. 弥散供氧流动特性及其富氧效果[J]. 工程科学学报, 2015, 37(10): 1370-1375.
[6] ZHU X Q, WANG X W. Experimental study of a rotary valve multi-bed rapid cycle pressure swing adsorption process based medical oxygen concentrator[J]. Adsorption, 2020, 26(8): 1267-1274.
[7] MORAN A, TALU O. Limitations of portable pressure swing adsorption processes for air separation[J]. Industrial & Engineering Chemistry Research, 2018, 57(35): 11981-11987.
[8] MOFARAHI M, TOWFIGHI J, FATHI L. Oxygen separation from air by four-bed pressure swing adsorption[J]. Industrial & Engineering Chemistry Research, 2009, 48(11): 5439-5444.
[9] WU C W, VEMULA R R, KOTHARE M V, et al. Experimental study of a novel rapid pressure-swing adsorption based medical oxygen concentrator: effect of the adsorbent selectivity of N2 over O2[J]. Industrial & Engineering Chemistry Research, 2016, 55(16): 4676-4681.
[10] VEMULA R R, KOTHARE M V, SIRCAR S. Performance of a medical oxygen concentrator using rapid pressure swing adsorption process: effect of feed air pressure[J]. AIChE Journal, 2016, 62(4): 1212-1215.
[11] ZHU X Q, LIU Y S, YANG R T. Effects of operating temperature on the performance of small scale rapid cycle pressure swing adsorption air separation process[J]. Adsorption, 2021, 27(2): 205-212.
[12] ZHENG X G, YAO H, HUANG Y. Orthogonal numerical simulation on multi-factor design for rapid pressure swing adsorption[J]. Adsorption, 2017, 23(5): 685-697.
[13] 田涛, 刘冰, 石梅生, 等. 双塔微型变压吸附制氧机实验和模拟[J]. 化工学报, 2019, 70(3): 969-978.
[14] QADIR S, LI D F, GU Y M, et al. Experimental and numerical analysis on the enhanced separation performance of a medical oxygen concentrator through two-bed rapid pressure swing adsorption[J]. Industrial & Engineering Chemistry Research, 2021, 60(16): 5903-5913.
[15] 祝显强, 刘应书, 杨雄, 等. 中间气两步充压对快速真空变压吸附制氧的影响[J]. 化工学报, 2016, 67(10): 4264-4272.
[16] 祝显强, 刘应书, 杨雄, 等. 吸附及解吸压力对快速变压吸附床内速度及循环性能的影响[J]. 工程科学学报, 2016, 38(7): 993-1001.
[17] LANGMUIR I. The adsorption of gases on plane surfaces of glass, mica and platinum[J]. Journal of the American Chemical Society, 1918, 40(9): 1361-1403.
[18] GLUECKAUF E, COATES J I. Theory of chromatography; the influence of incomplete equilibrium on the front boundary of chromatograms and on the effectiveness of separation[J]. Journal of the Chemical Society, 1947: 1315-1321.
[19] HUANG W C, CHOU C T. Comparison of radial- and axial-flow rapid pressure swing adsorption processes[J]. Industrial & Engineering Chemistry Research, 2003, 42(9): 1998-2006.
[20] CHAI S W, KOTHARE M V, SIRCAR S. Numerical study of nitrogen desorption by rapid oxygen purge for a medical oxygen concentrator[J]. Adsorption, 2012, 18(2): 87-102.
[21] ERGUN S. Fluid flow through packed columns[J]. Chemical Engineering Progress, 1952, 48: 89-94.
[22] RUTHVEN D. Principles of adsorption and adsorption processes[M]. New York: Wiley, 1984.
[23] SIRCAR S. Gibbsian surface excess for gas AdsorptionRevisited[J]. Industrial & Engineering Chemistry Research, 1999, 38(10): 3670-3682.
[24] WAKAO N, KAGUEI S, FUNAZKRI T. Effect of fluid dispersion coefficients on particle-to-fluid heat transfer coefficients in packed beds[J]. Chemical Engineering Science, 1979, 34(3): 325-336.

备注/Memo

备注/Memo:
收稿日期: 2023-06-17。
基金项目: 常州市应用基础研究资助计划(CJ20235015); 常州大学科研启动资助项目(ZMF21020032,ZMF21020388)。
作者简介: 祝显强(1989—), 男, 青海乐都人, 博士, 讲师。E-mail: zhu@cczu.edu.cn
更新日期/Last Update: 1900-01-01