Disadvantages Analysis&Working Principle of Traditional twin Towers





Working Principle



Generally speaking, we will choose activated alumina oxide or molecular sieve as adsorbent according to different structure of adsorption compressed air dryer.Adsorption dryer using advanced chemical technology and water absorption characteristics of adsorbent,saturated water molecules of compressed air adsorbed in the adsorbent during working pressure, and then restore adsorbent via depressurization ,heating and drying airflow purge. the compressed air drying dew point of up to below -40 ℃ after drying compressed air through the adsorption - regeneration cycle.



Static adsorption capacity of adsorbent for water at different temperatures


T/℃ /Adsorbent 25 50 75 100 125 150 250

molecular sieve 22% 21% 18% 15% 9% 6% 3.5%

alumina oxide 10% 6% 2.5% 2% <1% 0



Weakness of the traditional twin towers:

1.pressure dew point is unstable

2.high energy consumption

3.maintenance trouble



Defects of the traditional twin towers:


1. Distribution of airflow fluid is unbalanced, there is adsorption dead angle, adsorbent utilization is low;


2. In order to avoid powdering phenomenon, generally choosing active alumina oxide as adsorbent, which may cause adsorption efficiency is low, filling is not easy to achieve uniform, tight, leave no dead angle leading to current short-circuit;


3. “tunnel effect”to promote the absorbent powder invalid;


4.Low Utilization rate of Adsorbent,big filling amount and big renewable airflow;


5.Weak instantaneous resolution, which need a lot of renewable gas blowing;



6.Huge Pressure loss, high energy consumption;


7.Dust easily blocked pipe of filters and mufflers ;


8.Dust will bring impacts of back-end gas equipment;



9.Performance decrease or invalid after replacement,it’s difficult to fill adsorbent when second replacement



Biteman unit modular desiccant dryer and high precision filter---which is not only completely solve the water, oil, dust in the compressed air and other issues to provide technical support, and also greatly reduce energy consumption much than traditional purification equipment . Heat-free models need to 5% renewable gas consumption, micro-heat models only 2% the re-gas consumption, greatly reducing the energy consumption and production costs.


Original Article from Biteman


Http://www.bitemantech.com

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