FAQ about carbon molecular sieves and activated carbon
Time:2026-05-09
Q1: Can activated carbon be used for PSA nitrogen production?
A1: Absolutely not allowed. Activated carbon lacks molecular sieving ability and cannot selectively separate oxygen and nitrogen. Loading activated carbon into the PSA nitrogen generator can cause a sharp decrease in nitrogen purity, and the activated carbon powder may damage the pneumatic valve. This is an irreversible risk of equipment damage.
Q2: Can carbon molecular sieves be used for water treatment?
A2: No. Carbon molecular sieves will quickly pulverize and break down when exposed to liquid water, completely losing their adsorption properties. In addition, its cost is much higher than activated carbon, making it completely uneconomical for water treatment.
Q3: What is the service life of carbon molecular sieve? Why do some customers stop using it after 2 years?
A3: The design lifespan of carbon molecular sieves is usually 3-8 years, but the lifespan depends entirely on the intake mass. Common reasons for reducing lifespan include:
*Liquid water/high humidity: causing damage to microporous structure
*Oil mist/hydrocarbons: coking and blocking micropores at high temperatures (irreversible)
*Severe pressure fluctuations: causing particle wear and pulverization
So, configuring efficient oil removers and dryers in the front-end is the key to extending the lifespan of CMS.
Q4: Can carbon molecular sieves be "supplemented"?
A4: Strongly not recommended. Mixing new and old carbon molecular sieves can lead to inconsistent flow channels and adsorption fronts in the bed, severely reducing system efficiency and product purity. The entire bed should be replaced, and both towers should be replaced simultaneously.
Q5: How to determine if carbon molecular sieves need to be replaced?
*Decreased cycle time: In order to maintain purity, the PSA cycle period is continuously shortened
*Decreased gas production: Decreased nitrogen production within the same period of time
*Increased consumption of compressed air: producing the same volume of nitrogen requires more feed gas
Q1: Can activated carbon be used for PSA nitrogen production?
A1: Absolutely not allowed. Activated carbon lacks molecular sieving ability and cannot selectively separate oxygen and nitrogen. Loading activated carbon into the PSA nitrogen generator can cause a sharp decrease in nitrogen purity, and the activated carbon powder may damage the pneumatic valve. This is an irreversible risk of equipment damage.
Q2: Can carbon molecular sieves be used for water treatment?
A2: No. Carbon molecular sieves will quickly pulverize and break down when exposed to liquid water, completely losing their adsorption properties. In addition, its cost is much higher than activated carbon, making it completely uneconomical for water treatment.
Q3: What is the service life of carbon molecular sieve? Why do some customers stop using it after 2 years?
A3: The design lifespan of carbon molecular sieves is usually 3-8 years, but the lifespan depends entirely on the intake mass. Common reasons for reducing lifespan include:
*Liquid water/high humidity: causing damage to microporous structure
*Oil mist/hydrocarbons: coking and blocking micropores at high temperatures (irreversible)
*Severe pressure fluctuations: causing particle wear and pulverization
So, configuring efficient oil removers and dryers in the front-end is the key to extending the lifespan of CMS.
Q4: Can carbon molecular sieves be "supplemented"?
A4: Strongly not recommended. Mixing new and old carbon molecular sieves can lead to inconsistent flow channels and adsorption fronts in the bed, severely reducing system efficiency and product purity. The entire bed should be replaced, and both towers should be replaced simultaneously.
Q5: How to determine if carbon molecular sieves need to be replaced?
*Decreased cycle time: In order to maintain purity, the PSA cycle period is continuously shortened
*Decreased gas production: Decreased nitrogen production within the same period of time
*Increased consumption of compressed air: producing the same volume of nitrogen requires more feed gas
