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FAQ of molecular sieve for PSA oxygen generator
What is Pressure Swing Adsorption (PSA) Technology?
PSA is one of several technologies currently in use for separating oxygen from air.
How long does the molecular sieve last?
The molecular sieve life is based on the feed air quality. If the feed air quality always meets recommended standards, the sieve can last indefinitely (10 years or more!) If the molecular sieve ever became contaminated by oil, dirt or water can it be cleaned or replaced? If the molecular sieve is contaminated by oil it will have to be replaced. Water contamination, based on degree, does not necessarily mean that the sieve will need to be replaced. Dirt is a rare cause of sieve replacement, but other contaminates like ammonia can cause sieve failure. Consult factory for specific air contamination that may be present at the generator site.
Can the oxygen generator be operated with contaminated sieve, and what are the consequences?
A PSA oxygen generator may still operate after it has been contaminated, but a reduction in oxygen purity and flow should be expected. This may be critical in many applications, such as hospitals where the oxygen is being inhaled.
Is it easy to replace the molecular sieve and how much does it cost?
All oxygen generators are designed so that the sieve can be changed in the field. The cost of the sieve change depends on the generator model and size.
Is all zeolite molecular sieve the same?
Not all zeolite based sieves are the same, and can vary even by brands made in different locations.
Do you need a desiccant dryer for the air prep or can I use a standard refrigeration dryer?
A desiccant dryer is not required for air preparation, in most cases a refrigerated dryer is sufficient.
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