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Pressure swing adsorption: A theoretical study of diffusion‐induced separations
Author(s) -
Shin HeungSoo,
Knaebel K. S.
Publication year - 1987
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690330413
Subject(s) - pressure swing adsorption , zeolite , diffusion , adsorption , vacuum swing adsorption , context (archaeology) , chemistry , swing , air separation , thermodynamics , diffusion process , nitrogen , analytical chemistry (journal) , chromatography , chemical engineering , organic chemistry , engineering , catalysis , innovation diffusion , physics , mechanical engineering , paleontology , knowledge management , biology , oxygen , computer science
This report examines gas separation by a pressure swing adsorption (PSA) process that exploits differences in intraparticle rates of diffusion, rather than differences in adsorption isotherms. Film and intraparticle diffusion resistances are taken into account, but only the latter is examined closely. Each step of a four‐step cycle is incorporated, and concentration profiles within the particles and along the column axis are predicted. Several critical PSA operating conditions, including step times, velocities, and pressures are studied in the context of separation of nitrogen from air with zeolite 4A.