Examination of adsorption behavior in the water vapor mixture state by pressure swing adsorption (PSA) method

Kazuyuki Chihara,*,a Teruhisa Kato,a Katsuhira Kawahara,a Jun Kobayashi,a

Satoshi Nakagawa,b Kuniyasu Ogawac

aApplied Chemistry, Meiji Univ., Kawasaki, Kanagawa 214-8571, Japan

bIKIKEN CO.,LTD., Sayama, Saitama 350-1331, Japan

cMechanical Engineering, Keio Univ., Yokohama, Kanagawa 223-8522, Japan

*Corresponding author email: chihara@isc.meiji.ac.jp

Keyworda: Pressure Swing Adsorption, MRI, Stop & Go simulation
It is said that water vapor has influence of prevention of adsorption, deterioration promotion of adsorbent, etc. in the separation technology and operation in which the adsorption phenomenon was used. However, the elucidation about the example which actually performed verification by the PSA method about water vapor, and the cause directly exerted on adsorption is not carried out. The elucidation of the mechanism from which water vapor prevents adsorption and examination of the dissolution recovery under water vapor mixing were tackled in this research.
Fig. 1 the PSA plant layout drawing which was boiled and was used in the experiment was shown. The gas chromatograph was used for the experiment. Silica gel (CARiACT Q-6) was used as adsorbent. CH2Cl2 and CCl4 which are volatile organic
compounds?and CCl4 water vapor (H2O) were used as adsorbate. The refining gas and
enrichment gas which are discharged from an adsorption tower were measured for every fixed cycle. Moreover, the adsorption distribution in a column was investigated in analyzing the column which terminated the experiment by the definite period of time with MRI equipment.

The stop-go method divides an adsorption packed column into N unit axially and is the simulation that thought about the batch adsorption of each cell. Experiment parameters were made use of Stop & Go simulation. Compared the experimental values and simulation, examined the optimum conditions of the experiment.

Figure.1 PSA device