Pressure Swing Adsorption technology

Air Products and Chemicals, Inc. has been selected to supply a hydrocarbon and nitrogen recovery system for a new polyethylene manufacturing plant in Baytown, TX. The plant will be owned by Chevron Phillips Chemical Company and Solvay Polymers, Inc. The recovery system uses partial condensation in conjunction with Air Products pressure swing adsorption technology to recover hydrocarbons in the polyolefin plants, and recycle nitrogen with a purity of greater than 99%55. 

Pressure Swing Adsorption Technology for Hydrogen Production... 

Sircar, S. Pressure swing adsorption technology. In Adsorption Science and Technology (eds. A.E. Rodrigues, D.M. Levan, D. Tondeur). Dordrecht, The Netherlands Kluwer Academic Publishers, p. 285, 1989. 

S. Sircar, Pressure Swing Adsorption Technology in "Adsorption Science and Technology, NATO ASI Series E," A. E. Rodrigues et al, Ed., Kluwer Academic Publishers, The Netherlands (1989). 

In other cases, the make-up gas contains only H2 and N2 maybe with minor traces of inerts like CH4, Ar, rare gases etc. (Inerts free loop layout). In these cases the synthesis gas is normally generated in front-ends based on coal gasification or with final clean-up of the synthesis gas based on cold box or PSA (Pressure Swing Adsorption) technologies. 

PRESSURE SWING ADSORPTION TECHNOLOGY FOR HYDROGEN PURIFICATION - A STATUS REVIEW... 

Sircar, S, Golden, T. C, Pressure Swing Adsorption Technology for H2 Production , Chapter 12 in Hydrogen Production Technologies , Liu, K, Song, C, Vein, S (eds), Wiley Inter-science Publication, in press (2006). Private communication with Questair, Inc., Canada Sircar, S, Hanley, B. F, Adsorption 1, 313 (1995). 

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