Tapered Pressure Swing Adsorption Columns for Simultaneous Air Purification and Solvent Vapor Recovery

1998 ◽  
Vol 37 (7) ◽  
pp. 2783-2791 ◽  
Author(s):  
James A. Ritter ◽  
Yujun Liu
Keyword(s):  
Pressure Swing Adsorption ◽  
Air Purification ◽  
Solvent Vapor ◽  
Pressure Swing

Breakthrough Studies of Methyl Salicylate and DMMP Mixed in Methyl Salicylate with Pressure Swing Adsorption Composed of 13X Molecular Sieves

2016 ◽  
Vol 1 (2) ◽  
pp. 155
Author(s):  
G Swetha ◽  
T Gopi ◽  
S Chandra Shekar ◽  
C Ramakrishna ◽  
Bijendra Saini
Keyword(s):  
Flow Rate ◽  
Molecular Sieves ◽  
Methyl Salicylate ◽  
Pressure Swing Adsorption ◽  
Test Procedure ◽  
Chemical Warfare Agents ◽  
Textural Properties ◽  
Air Purification ◽  
Warfare Agents ◽  
Pressure Swing

A test procedure for pressure swing adsorption (PSA) was established and elucidated for the air purification using methyl salicylate (MeS) and 5% (v/v) dimethyl methyl phosphonate (DMMP) in MeS containing air stream as feed. The effect of feed flow rate was studied by varying the flow from 5 lpm to 20 lpm, for both the molecules at 25 oC and 4 kg/cm2. The results revealed that the flow rate had a significant influence on the breakthrough time. A method was developed for the determination of feed, purge, and dry air composition, by the solvent extraction method using the XAD-2 and the average concentrations reported. The 13X molecular sieves were characterised for its structural and textural properties such as BET- SA, XRD, and FT-IR. The temperature programmed desorption of DMMP and MeS on 13X clearly demonstrated that it was easily regenerated at ~320 °C after prolonged field operation of PSA. The PSA results obtained with PSA composed molecular sieves appeared to give promising technology for air purification and specifically to the chemical warfare agents simulants.

Pressure swing adsorption cycles for improved solvent vapor enrichment

AIChE Journal ◽  
2000 ◽  
Vol 46 (3) ◽  
pp. 540-551 ◽  
Author(s):  
Yujun Liu ◽  
James A. Ritter ◽  
Bal K. Kaul
Keyword(s):  
Pressure Swing Adsorption ◽  
Solvent Vapor ◽  
Pressure Swing
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