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Removal of CO from process gas with Sn–activated carbon in pressure swing adsorption
Author(s) -
Iyuke Sunny E,
Mohamad Abu B,
Daud Wan R W,
Kadhum Amir A H,
Fisal Zahedi,
Shariff Azmi M
Publication year - 2000
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/1097-4660(200009)75:9<803::aid-jctb283>3.0.co;2-g
Subject(s) - pressure swing adsorption , activated carbon , adsorption , carbon fibers , chemistry , materials science , chemical engineering , organic chemistry , composite material , composite number , engineering
A pressure swing adsorption (PSA) system using activated carbon impregnated with SnCl 2 ·2H 2 O and pure activated carbon was used to remove CO from a model H 2 /CO mixture representing the steam reformer process gas. On comparing PSA results for both carbons, the CO adsorptive capacity of impregnated carbon was found to be superior to that of the pure carbon. This was confirmed by the fact that the concentration of CO, initially at 1000 ppm, was successfully reduced to 4.02% and 1.04% of its initial concentration by the pure and the impregnated activated carbons respectively in the PSA system. The species in the impregnated carbon responsible for the improved gas phase CO adsorption was found to be SnO 2 . Simulation results at a cyclic time of 600 s in the PSA operating at 10 atmospheres gave a product recovery and purity of 99.99% and 57.48%, respectively. At 6 atmospheres, the product recovery and purity were 92.17% and 77.12%, respectively. © 2000 Society of Chemical Industry