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Adsorption

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19-05-2020

Experimental study of a rotary valve multi-bed rapid cycle pressure swing adsorption process based medical oxygen concentrator

Authors: Xianqiang Zhu, Xiaowei Wang

Published in: Adsorption | Issue 8/2020

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Abstract

Rapid cycle pressure swing adsorption (RCPSA) characterized by short cycle time permits adsorbents to be used more frequently and increases process productivity. A rotary valve multi-bed RCPSA process is proposed to improve the performance of miniature oxygen concentrator. The RCPSA air separation system is highly integrated by four adsorbent beds and a rotary valve. The effects of process parameters on the performance of the RCPSA system were conducted by experiments. Results showed that the system could produce 1 L min⁻¹ of ~ 92% O₂ with ~ 30% of oxygen recovery and ~ 78 kg·TPD⁻¹ of bed size factor (BSF) from compressed air at low adsorption and desorption pressure ratio (~ 250:101 kPa). The minimum BSF with ~ 5 s optimal cycle time is a sharp decline with increasing of pressure ratio. However, a reversed trend between BSF and unit power at different pressure ratios is prominently emerged.

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Title: Experimental study of a rotary valve multi-bed rapid cycle pressure swing adsorption process based medical oxygen concentrator
Authors: Xianqiang Zhu
Xiaowei Wang
Publication date: 19-05-2020
Publisher: Springer US
Published in: Adsorption / Issue 8/2020
Print ISSN: 0929-5607
Electronic ISSN: 1572-8757
DOI: https://doi.org/10.1007/s10450-020-00240-5

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