Absorption process for producing oxygen and nitrogen and solution therefor
- Wilmington, DE
- Palo Alto, CA
Process for the separation and purification of oxygen and nitrogen is disclosed which utilizes solutions of oxygen carriers to selectively absorb oxygen from a gaseous stream, leaving nitrogen as a byproduct. In the process, an oxygen carrier capable of reversibly binding molecular oxygen is dissolved in a solvent solution, which absorbs oxygen from an oxygen-containing gaseous feed stream such as atmospheric air and desorbs oxygen to a gaseous product stream. The feed stream is maintained at a sufficiently high oxygen pressure to keep the oxygen carrier in its oxygenated form during absorption, while the product stream is maintained at a sufficiently low oxygen pressure to keep the carrier in its deoxygenated form during desorption. In an alternate mode of operation, the carrier solution is maintained at a sufficiently low temperature and high oxygen pressure to keep the oxygen carrier in its oxygenated form during absorption, and at a sufficiently high temperature to keep the carrier in its deoxygenated form during desorption. Under such conditions, exceptionally high oxygen concentrations on the order of 95% to 99% are obtained, as well as a long carrier lifetime in excess of 3 months, making the process commercially feasible.
- Research Organization:
- Bend Research, Inc., OR (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC06-79ER10337
- Assignee:
- Bend Research, Inc. (Bend, OR)
- Patent Number(s):
- RE33,352
- OSTI ID:
- 875291
- Country of Publication:
- United States
- Language:
- English
Similar Records
Absorption process for producing oxygen and nitrogen and solution therefor
Absorption process for producing oxygen and nitrogen and solution therefor
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
95
99
ABSORPTION
ADSORBENTS
AIR
DESORPTION
MATERIALS RECOVERY
NITROGEN
OXYGEN
PURIFICATION
SEPARATION PROCESSES
SERVICE LIFE
absorb
absorb oxygen
absorbs
absorption
absorption process
air
alternate
alternate mode
atmospheric
atmospheric air
binding
binding molecular
byproduct
capable
carrier
carrier capable
carrier lifetime
carrier solution
carriers
commercially
commercially feasible
concentrations
conditions
containing gas
containing gaseous
deoxygenated
deoxygenated form
desorbs
desorption
disclosed
dissolved
exceptionally
excess
feasible
feed
feed stream
form
gaseous
gaseous feed
gaseous product
gaseous stream
leaving
leaving nitrogen
lifetime
maintained
mode
molecular
molecular oxygen
months
nitrogen
obtained
operation
oxygen
oxygen carrier
oxygen carriers
oxygen concentration
oxygen concentrations
oxygen pressure
oxygen-containing
oxygen-containing gas
oxygen-containing gaseous
oxygenated
oxygenated form
pressure
process
process commercially
producing
producing oxygen
product
product stream
purification
reversibly
reversibly binding
selectively
selectively absorb
separation
solution
solutions
solvent
solvent solution
sorption process
stream
sufficiently
temperature
utilizes
utilizes solutions