Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1984-05-24
1985-10-01
Spitzer, Robert H.
Gas separation
Means within gas stream for conducting concentrate to collector
55 75, B01D 5304
Patent
active
045443785
ABSTRACT:
The invention relates to a process for adsorption of nitrogen from nitrogen-containing gases using faujasite-containing compositions in which the original hydrogen or monovalent forms are ion exchanged to their polyvalent form and then dehydrated in such a manner as to result in a preponderence of its polyvalent ions in a dehydrated/dehydroxylated state while maintaining substantially the same zeolite content. The resulting compositions, whose cations contained in the faujasitic portion are substantially in their dehydrated/dehydroxylated state, have been found to have surprisingly high selectivities and capacities for the separation of air into nitrogen and oxygen.
REFERENCES:
patent: 2882244 (1959-04-01), Milton
patent: 3140932 (1964-07-01), McKee
patent: 3140933 (1964-07-01), McKee
patent: 3313091 (1967-04-01), Berlin
patent: 3375065 (1968-03-01), McDaniel et al.
patent: 3375206 (1968-03-01), Shaw
patent: 3449265 (1969-06-01), Gladrow et al.
patent: 3513108 (1970-05-01), Kerr
patent: 3597169 (1971-08-01), Savage
patent: 3647682 (1972-03-01), Robo et al.
patent: 4259299 (1981-03-01), Hagiwara et al.
patent: 4420419 (1983-12-01), Ogawa et al.
P. K. Basv et al., Molecular Sieve for Oxygen Enrichment of Air, Jul. 1982, vol. 1, pp. 35-40.
C. W. Roberts, Molecular Sieves for Industrial Separation and Adsorption Applications, Special Pub. #33, Chem. Soc. '80.
D. Atkinson & G. Curthoys-Journal of Chemical Education-"The Determination of Heat of Adsorption by Gas-Sold Chromatography", pp. 564-566.
A. U. Kiselev & Y. I. Yashin-"Gas-Adsorption Chromatography", 1969, pp. 120-125.
Chem. Soc. Faraday Transl., 1981-"Heats and Entropies of Adsorption of Saturated Hydrocarbon by Zeolites X and Y", by D. Atkinson & G. Curthoys, pp. 897-907.
Journal of Colloid and Interface Science, vol. 28, No. 2, 1968-R. J. Neddenreip-"Sodium Cation Adsorption Sites in Zeolite Types X and Y", pp. 293-304.
Z. Chem., vol. 15, No. 1, 1975, pp. 36-37-Translation-"Separating Ability of Zeolitic Molecular Sieves Toward Nitrogen/Oxygen Mixtures", E. Wolfe et al.
J. B. Uytterhoeven et al.-"Studies of the Hydrogen Held by Solids XVI Infrared Spectroscopy of X-and Y-Type Zeolites Containing Univalent and Divalent Cations", pp. 425-434.
Izi Akad, Nauk Gruz, SSR, Ser. Kim., vol. 1, No. 4, pp. 399-402, 1975-T. G. Andronikashuili et al., "Chromatographic Separation of a Mixture of Oxygen and Nitrogen on Cation-Modified Synthetic Mordenites-"Translation.
Special Pub. No. 33-The Properties and Applications of Zeolites-pp. 92-102.
The Journal of Physical Chemistry-vol. 72, No. 4, 1968-"X-Ray Evidence for Residual Water in Calcined Divalent Cation Faujasite-Type Zeolites", pp. 1400-1401, D. H. Olsen.
Res. Bull., vol. 3, pp. 633-642-J. M. Bennett et al.-1968-"Positions of Cations and Molecules in Zeolites with the Faujasite-Type Framework".
J. W. Ward-A Spectroscopic Study of the Surface of Zeolite Y-vol. 72, No. 12-1968-"II Infrared Spectra of Structural Hydroxyl Groups and Adsorbed Water on Alkali, Alkaline Earth, and Rare Earth Ion-Exchange Zeolites"-pp. 4211-4223.
Journal of Catalysis 10, pp. 34-46-1968-J. W. Ward-"The Nature of Active Sites on Zeolites III. The Alkali and Alkaline Earth Ion-Exchangen Forms".
Canadian Journal of Chemistry, vol. 42-1964-H. W. Habgood-"Adsorptive and Gas Chromatographic Properties of Various Cationic Forms of Zeolite X'"-pp. 2340-2350.
"Adsorption By Dehydrated Zeolite Crystals", Chapter 8, pp. 593-724, D. W. Breck.
Earth Science and Astronomy-pp. 215-220-H. Minato et al.-"Adsorpton of CO.sub.2 and N.sub.2 Gases on Some Natural Zeolites and Their Ion-Exchanged Forms"-H. Minato et al.
A.I.Ch. E. Journal-A. L. Myers et al., pp. 121-127-"Thermodynamics of Mixed-Gas Adsorption".
Chemistry and Industry-1967-p. 829-K. S. W. Sing-"Assessment of Microporosity".
Journal of Colloid and Interface Science 21, pp. 405-414-1966-J. H. de Boer et al., "Thet-Curve of Multimolecular N.sub.2 -Adsorption".
Vol. II-Preparation and Examination of Practical Catalysts-pp. 7-13-"Experimental Methods in Catalytic Research", A. P. Bolton.
R. M. Barrer & W. I. Stuart, "Ion Exchange and the Thermodynamics of Intracrystalline Sorption", Jun. 21, 1958, pp. 464-483, I. Energetics of Occlusion of Argon and Nitrogen by Faujasite-Type-Crystals.
Donald Peterson, "Influence of Presorbed Water on the Sorption of Nitrogen by Zeolites at Ambient Temperatures", Zeolites, 1981, vol. 1, Jul., pp. 105-112.
J. A. Rabo, C. L. Angell, P H. Kasai & Verner Schomaker-"Studies of Cations in Zeolites": Adsorption of Carbon Monoxide; Formation of Ni Ions and Na.sup.3+ Centres, Union Carbide Research Institute, N.Y., pp. 328-349.
Coe Charles G.
Kuznicki Steven M.
Air Products and Chemicals Inc.
Dannells, Jr. Richard A.
Innis E. Eugene
Simmons James C.
Spitzer Robert H.
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