Accession Number:

ADA142889

Title:

Adsorption Equilibria and Performance of a Pressure Swing Adsorption Air Separation Unit

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH

Personal Author(s):

Report Date:

1984-01-01

Pagination or Media Count:

322.0

Abstract:

Current pressure swing adsorption PSA air separation units operating on short cycle times suffer a reduction in product oxygen concentration when subjected to lower ambient temperatures i.e., less than -10 C. This work investigates this problem based on analysis of adsorption equilibria, column breakthrough studies, and actual PSA system data. Pure and multicomponent data for nitrogen, oxygen, and air on molecular sieve 5A were collected at 24, -40, and -70 C up to pressures of 4.3 atmospheres absolute. Using a statistical thermodynamic model pure component data were adequately predicted over the entire temperature range 24 to -70 C. The multicomponent data were predicted at 24 C by a statistical thermodynamic model and ideal adsorbed solution theory. At the lower temperatures the gas mixture behaved nonideally.

Subject Categories:

  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE