Research on key points and difficulties in the design of medical molecular sieve oxygen generator
ZHOU Qin
Abstract：Aiming at the problem of medical oxygen-enriched air supply,this paper describes three common oxygen-enriched air supply sources:medical liquid oxygen storage tanks,medical molecular sieve oxygen generators,and medical oxygen-enriched air cylinder busbars,and emphatically analyzes the working principle,design process,and main equipment components of medical molecular sieve oxygen generators.Based on the principle of pressure swing adsorption,zeolite molecular sieves are used as adsorbents to separate oxygen-enriched air from air through the processes of pressurized adsorption and depressurized desorption.In the design process,the oxygen-enriched air demand is first calculated according to the number of beds in medical institutions.Then,the corresponding oxygen generator is configured.Finally,the design scheme is completed and factors such as machine room area are considered.The paper provides detailed descriptions of the functions and working requirements of key apparatuses including air compressors,refrigerated dryers,multi-stage filters,molecular sieve adsorption tower(main unit),oxy gen-enriched air tanks,oxy gen-enriched air boosters,oxygen-enriched air purity monitors,oxygen-enriched air flowmeters,intelligent control systems,and backup oxygen sources.It is especially emphasized that low-pressure and fully oil-free scroll compressors should be selected to ensure air cleanliness,and the importance of intelligent control systems to monitor equipment operation.Moreover,the paper presents a specific design flow example.In compliance with relevant national standards,the paper outlines clear requirements for the layout and safety protection of a medical molecular sieve oxygen generation station,including fire resistance ratings,door and window materials,firewall settings,and backup power supplies.In summary,medical molecular sieve oxygen generator plays an important role in solving the problem of oxygen-enriched air supply in medical institutions due to its convenient on-site oxygen production capabilities and suitability for remote areas.It is an ideal oxygen-enriched air supply solution,especially for medical institutions far away from large oxygen-enriched air production units.
Keywords：medical oxygen generatorpressure swing adsorptiondesignanalysis
Publication Date：2024-04-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 43-46 )