experimental study on oxygen concentrator with wide product flow rate range individual CORD-Papers-2021-10-25 (Version 1)

Title: Experimental study on oxygen concentrator with wide product flow rate range: individual parametric effect and process improvement strategy
Abstract: Improvement on oxygen (O2) concentrator using pressure swing adsorption (PSA) technology according to variable product demands is of great significance, which, for instance, provides the key step for success in practical O2 therapy for COVID-19 patients who need to be delivered with a wide product flow rate range (115 standard liter per minute (SLPM)) of medical O2 (purity >82%). This work studied the individual effects of major PSA process parameters on O2 production performance at the product flow rate of 3.4619.88 SLPM (0.643.68 SLPM per kilogram of adsorbent (SLPM/kg)), based on a self-designed two-bed PSA unit with a modified Skarstom cycle using Li-LSX zeolite adsorbents. The improvement strategies were accordingly proposed based upon influential mechanisms of each parameter: 1) at lower product flow rates (2.00 SLPM/kg), increasing the purge flow rate and decreasing the adsorption pressure to suppress excess O2 adsorption, and decreasing the feed flow rate to ensure low energy consumption;2) at higher product flow rates (2.00 SLPM/kg), decreasing the purge flow rate and increasing the adsorption pressure to eliminate N2 breakthrough and O2-rich product waste, and appropriately increasing the feed flow rate to enhance cost-effectiveness. An improved set of parameters rendered O2 purity (95.6774.86%), recovery (11.2849.05%), productivity (0.472.04 mmol/kg/s) increased by up to 3.5220.08%, 0.3620.47%, 6.8219.61%, and energy consumption (4.070.95 kWh/kgO2) decreased by up to 10.5618.10%, in comparison to two conventional sets, respectively. The results are beneficial for developing intellectualized and flexibly-controlled O2 concentrators for practical applications. 2021 Elsevier B.V.
Published: 2021
Journal: Separation and Purification Technology
Author Name: Zhang, Q
Author link: https://covid19-data.nist.gov/pid/rest/local/author/zhang_q
Author Name: Liu, Y
Author link: https://covid19-data.nist.gov/pid/rest/local/author/liu_y
Author Name: Li, Z
Author link: https://covid19-data.nist.gov/pid/rest/local/author/li_z
Author Name: Xiao, P
Author link: https://covid19-data.nist.gov/pid/rest/local/author/xiao_p
Author Name: Liu, W
Author link: https://covid19-data.nist.gov/pid/rest/local/author/liu_w
Author Name: Yang, X
Author link: https://covid19-data.nist.gov/pid/rest/local/author/yang_x
Author Name: Fu, Y
Author link: https://covid19-data.nist.gov/pid/rest/local/author/fu_y
Author Name: Zhao, C
Author link: https://covid19-data.nist.gov/pid/rest/local/author/zhao_c
Author Name: Yang, R T
Author link: https://covid19-data.nist.gov/pid/rest/local/author/yang_r_t
Author Name: Webley, P A
Author link: https://covid19-data.nist.gov/pid/rest/local/author/webley_p_a
license: unk
license_url: [unknown license]
source_x: WHO
source_x_url: https://www.who.int/
who_covidence_id: #covidwho-1275710
has_full_text: FALSE
G_ID: experimental_study_on_oxygen_concentrator_with_wide_product_flow_rate_range_individual
S2 ID: 236244479