Two-Dimensional Modeling of Pressure Swing Adsorption (PSA) Oxygen Generation with Radial-Flow Adsorber

Yang, Xiong; Wang, Haoyu; Chen, Jiangwei; Li, Ziyi; Liu, Yingshu; Zhang, Chuanzhao; Xing, Yi

doi:10.3390/app9061153

Cited by 13 publications

(3 citation statements)

References 32 publications

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“…Governing equations: the equation used in this simulation are from literature by Yang et al [18], Wang et al [16] and Chang et al [10]. The describing the overall PSA operations are followed as below.…”

Section: Ideal Gas Law Is Appliedmentioning

confidence: 99%

Simulation of Pressure Swing Adsorption for Oxygen Concentrator Using LiX Zeolite

Fauziah,

Kurniawan,

Irawan

2024

AMM

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The existence of oxygen is needed in various fields such as health, industry, aerospace, and energy. Pressure swing adsorption method using zeolite A and X is commonly used in the oxygen separation process. Zeolite LiX is widely used especially in oxygen purification systems from air for medical needs until the purity reach >90%. In the present work the simulation studies of oxygen separation from air using zeolite LiX were investigated by pressure swing adsorption method. This simulation uses 2 beds/4 steps Skarstrom cycle which generally consists of bed pressurization, adsorption, depressurization and desorption. Several variables were studied such as the effect of pressure, cycle time, and temperature to determine the level of product purity. The simulation shows that the increase in oxygen concentration is caused by an increase in operating pressure and total cycle time to obtain maximum results. Meanwhile, large pressures can reduce the efficiency of the adsorbent. The maximum oxygen concentration that can be obtained up to 99%. However, the temperature variation has no significant change. In general, pressure plays the most significant role in oxygen purification.

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Section: Ideal Gas Law Is Appliedmentioning

confidence: 99%

Simulation of Pressure Swing Adsorption for Oxygen Concentrator Using LiX Zeolite

Fauziah,

Kurniawan,

Irawan

2024

AMM

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“…Since the gas velocity through the adsorption unit is driven by pressure drop, a possibility to increase the gas velocity is to distribute the adsorbent in a shorter and thicker column [44]. If the column length is decreased by half and the radius of the column is increased by a factor of √ 2 , the gas velocity can be increased from 0.23 m/s to 0.34 m/s.…”

Section: Second Example: Peak Shaving Of Water In Bathroomsmentioning

confidence: 99%

Modelling of adsorption technologies for controlling indoor air quality

Grande

2022

Adsorption

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Technologies for control of indoor air quality are very important to ensure that health and comfort conditions are attained in closed environments. The indoor air quality market is fertile ground for adsorption technologies, both at larger industrial scale and for residential uses. The common strategy to design adsorption technologies considers constant inlet conditions, while for most indoor air control applications, the inlet conditions will change because of the partial removal of the contaminant. This work presents a generic modelling approach, where the adsorption technology is coupled with the indoor environment to be controlled. This approach enables a tailored and more accurate process design and additionally, it can also assist in the physical location of the removal unit and sensors to control its operation. Two different examples of application of this methodology are provided: control of CO2 in tightly closed environments and "peak shaving" of water vapor in bathrooms.

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“…Hamedi et al [17] found a novel radical flow reactor with lower pressure drop, and compared the optimized reactor with an optimized conventional axial flow reactor to ascertain the superiority of the proposed reactor configuration. Yang et al [18] performed a numerical simulation of a PSA oxygen production process based on radial-flow adsorber and found that the centripetal π-flow radial adsorber has the best flow characteristics for the PSA process.…”

Section: Introductionmentioning

confidence: 99%

3-D Modeling of Gas–Solid Two-Phase Flow in a π-Shaped Centripetal Radial Flow Adsorber

Wang

Yang

et al. 2020

Applied Sciences

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Radial flow adsorber (RFA) is widely used in large-scale pressure swing adsorption (PSA) oxygen production system because of high air separation. In this study, a 3-D modeling of gas–solid two-phase flow was established for the π-shaped centripetal RFA (CP-π RFA). The pressure difference, temperature changes, velocity profiles and oxygen distributions were comparatively studied using this model. Part of the results have been compared with the experiments results, which shows this model can give an accurately prediction. The results show that the pressure and velocity in the adsorber change greatly near the outer hole and central hole, but the overall pressure and velocity changes in the bed are stable. The oxygen product purity in the adsorbent filling area performed better on oxygen enrichment after eight cycles. The oxygen product flow rate will affect the oxygen production performance. The laws of the pressure, velocity, temperature and oxygen distributions can provide an important technical reference for CP-π RFA in the PSA for oxygen production.

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Two-Dimensional Modeling of Pressure Swing Adsorption (PSA) Oxygen Generation with Radial-Flow Adsorber

Cited by 13 publications

References 32 publications

Simulation of Pressure Swing Adsorption for Oxygen Concentrator Using LiX Zeolite

Simulation of Pressure Swing Adsorption for Oxygen Concentrator Using LiX Zeolite

Modelling of adsorption technologies for controlling indoor air quality

3-D Modeling of Gas–Solid Two-Phase Flow in a π-Shaped Centripetal Radial Flow Adsorber

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