Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1990-07-19
1992-09-15
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 28, 55 75, 55179, 55208, 55389, B01D 5304
Patent
active
051474190
ABSTRACT:
Adsorbers used to dry air frequently contain 4A or 13X molecular sieve zeolites, which are intermittently reactivated by thermal regeneration, When a thermally regenerated adsorber is repressurized, nitrogen adsorbs preferentially relative to oxygen in activated 4A and 13X molecular sieve zeolites. This produces an oxygen-enriched, high pressure gas within the adsorber vessel which emerges immediately after the absorber is brought on line. The oxygen-enriched, high pressure gas can cause fires, explosions, and other deleterious effects in and downstream of such adsorber vessels. This invention provides thermally regenerated air driers, adsorbent chambers and air drying processes using adsorbent compositions that do not adsorb nitrogen preferantially to oxygen. Thermally regenerated air driers, adsorbers and drying processes using such adsorbent compositions prevent the problems associated with transient oxygen enrichment.
REFERENCES:
patent: 2882243 (1959-04-01), Milton
patent: 2944627 (1960-07-01), Skarstrom
patent: 3691251 (1972-09-01), Bauer
patent: 3981698 (1976-09-01), Leppard
patent: 3982912 (1976-09-01), Vatsurugi et al.
patent: 4273621 (1981-06-01), Fornoff
patent: 4373935 (1983-02-01), Ausikaitis et al.
patent: 4405343 (1983-09-01), Othmer
patent: 4407662 (1983-10-01), Ginder
patent: 4469665 (1984-09-01), Pinto
patent: 4487614 (1984-12-01), Yon
patent: 4636225 (1987-01-01), Klein et al.
patent: 4663052 (1987-05-01), Sherman et al.
patent: 4726818 (1988-02-01), Yeung et al.
patent: 4971606 (1990-11-01), Sircar et al.
D. W. Breck & J. V. Smith, "Molecular Sines", Scientific American, vol. 200, No. 1 (Jan. 1959), pp. 85-94.
J. M. Kuchta et al., "Flammability And Autoignition of Hydrocarbon Fuels Under Static And Dynamic Conditions", U.S. Bur. Mines Rep. Invest., 5992 (1962).
M. G. Zabetakis et al., "Autoignition of Lubricants At Elevated Pressures", U.S. Bur. Mines Rep. Invest., 6112 (1962).
F. T. Bodurtha, "Industrial Explosion Prevention and Protection", McGraw-Hill, New York (1980), pp. 25-29.
C. S. McCoy & F. J. Hanly, "Fire-Resistant Lubricants for Refinery Air Compressors", paper presented at the National Fuels and Lubricants Meeting of the National Petroleum Refiners Association, (Sep. 11-12, 1975), Houston, Tex.
Schoofs Gregory R.
Schoofs Richard J.
LandOfFree
Apparatus and method for air drying with reduced oxygen enrichme does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for air drying with reduced oxygen enrichme, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for air drying with reduced oxygen enrichme will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-733485