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Gas separation by pressure swing adsorption: A pore‐diffusion model for bulk separation
Author(s) -
Yang R. T.,
Doong S. J.
Publication year - 1985
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.690311109
Subject(s) - pressure swing adsorption , adsorption , diffusion , vacuum swing adsorption , activated carbon , chemistry , swing , chemical engineering , process (computing) , separation process , gas separation , chromatography , air separation , materials science , ambient pressure , analytical chemistry (journal) , thermodynamics , membrane , organic chemistry , mechanical engineering , biochemistry , physics , oxygen , computer science , engineering , operating system
An experimental and theoretical study is performed for bulk separation of gas mixture by pressure swing adsorption, a process widely used commercially for gas purification. By cycling the pressure of a bed of activated carbon between 3 and up to 500 psig (0.021 to 3.445 MPa), at the ambient temperature, a 50/50 H 2 /CH 4 mixture is separated into two products with well over 90% purity and recovery at high throughputs. All process characteristics can be predicted by a pore‐diffusion model. A fundamental understanding of the function of each step in the cyclic process is given.