Gas separation: processes – Solid sorption – Inorganic gas or liquid particle sorbed
Patent
1992-09-29
1993-12-21
Spitzer, Robert
Gas separation: processes
Solid sorption
Inorganic gas or liquid particle sorbed
95115, 95126, 96130, 96133, 96146, B01D 5304
Patent
active
052717623
ABSTRACT:
Adsorbers used to dry air frequently contain 4A or 13X molecular sieve zeolites, which are intermittently reactivated by thermal regeneration. When the air pressure in a thermally regenerated adsorber is increased, such as during start-up, after adsorbent reloading, after apparatus repair, maintenance or inspection, or after repressurization following thermal regeneration, 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 adsorber 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 and air drying processes using adsorbent compositions that do not adsorb nitrogen preferentially to oxygen. Thermally regenerated air driers and drying processes using such adsorbent compositions prevent the problems associated with transient oxygen enrichment.
REFERENCES:
patent: 2944627 (1960-07-01), Skarstrom
patent: 3224167 (1965-12-01), Jones
patent: 3448561 (1969-06-01), Seibert et al.
patent: 3531916 (1970-10-01), Kulperger et al.
patent: 3691251 (1972-09-01), Bauer
patent: 3691728 (1972-09-01), Vautrain et al.
patent: 3756961 (1973-09-01), Francis et al.
patent: 3981698 (1976-09-01), Leppard
patent: 3982912 (1976-09-01), Yatsurugi et al.
patent: 4094652 (1978-06-01), Lowther
patent: 4101296 (1978-07-01), Lowther
patent: 4137054 (1979-01-01), Miyake 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: 4484933 (1984-11-01), Cohen
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: 4846852 (1989-07-01), Schweitzer et al.
patent: 4971606 (1990-11-01), Sircar et al.
patent: 5147419 (1992-09-01), Schoofs et al.
Schoofs Gregory R.
Schoofs Richard J.
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