Simulation of Pressure Swing Adsorption for Oxygen Concentrator Using LiX Zeolite

Applied Mechanics and Materials Pub Date : 2024-01-09 DOI:10.4028/p-w8r00m

Nisa Aina Fauziah, Teguh Kurniawan, Anton Irawan

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Abstract

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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使用 LiX 沸石对氧气浓缩器进行变压吸附模拟

健康、工业、航空航天和能源等各个领域都需要氧气。使用沸石 A 和 X 的变压吸附法通常用于氧气分离过程。沸石 LiX 尤其被广泛应用于从空气中提纯氧气的系统，以满足医疗需求，直到纯度达到 90%以上。本研究采用变压吸附法对使用沸石 LiX 从空气中分离氧气进行了模拟研究。该模拟使用 2 个床/4 个步骤的 Skarstrom 循环，一般包括床增压、吸附、减压和解吸。研究了几个变量，如压力、循环时间和温度的影响，以确定产品的纯度水平。模拟结果表明，氧气浓度的增加会导致操作压力和总循环时间的增加，从而获得最大效果。同时，压力过大会降低吸附剂的效率。最高氧气浓度可达 99%。但是，温度变化没有明显变化。总的来说，压力在氧气净化中起着最重要的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Applied Mechanics and Materials

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