Back to results
US 7,077,891 B2Granted
Adsorbent sheet material for parallel passage contactors
AssigneeAir Products and Chemicals, Inc.
InventorsStephen Mosheim Jaffe, Cristian Ion Contescu
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAir Products and Chemicals, Inc.
InventorsStephen Mosheim Jaffe, Cristian Ion Contescu
Estimating the term…
An adsorbent material fabricated into a reinforcement-free, self-supported coherent thin sheet and configured for use as a parallel passage contactor element in adsorption/separation applications with gases and liquids is disclosed. The adsorbent sheet material is obtained by enmeshing fine adsorbent particulates in a polymer binder. Particulates include but are not limited to carbon particles, inorganic oxides particles, or ceramic particles, or synthetic polymer resin particles. The adsorbent sheet advantageously contains a large volume percentage of active adsorbent particles. The parallel passage contactor device fabricated from the adsorbent sheet material is characterized by minimal mass transfer resistance and better separation efficiency expressed as height equivalent to a theoretical plate, while it maintains most of the adsorptive properties of the starting particulates, and can be used in gas separation applications with short adsorption cycles, such as rapid pressure swing adsorption, rotary concentrators, rapid electric swing adsorption.
A pressure swing adsorption apparatus comprising a parallel passage contactor comprising an adsorbent material comprising adsorbent particulates and a polymer binder, fabricated into a reinforcement-free, self-supported, flexible, coherent sheet, wherein the adsorbent particulates consist of particles from a first group, either alone or admixed with particles from a second group, said particles from the first group include carbon nanoparticles, inorganic oxides nanoparticles, and ceramic nanoparticles and have particle sizes in the range from 10 to 200 nm, and said adsorbent particulates differ from said polymer binder.
A pressure swing adsorption parallel passage contactor comprising an adsorbent material comprising adsorbent particulates and a polymer binder, fabricated into a reinforcement-free, self-supported, flexible, coherent sheet, wherein said sheet is spiral wound or layered with gaps between adjacent sheets to allow the flow of gas parallel to the sheet surface where an impermeable casing surrounds the contactor and provides connections for gas inlet and outlet.
A parallel passage contactor comprising an adsorbent material comprising adsorbent particulates and a polymer binder, fabricated on a substrate by tape casting or printing to form a sheet, where the substrate thickness is less than 60 microns.
Dependencies are inferred from the claim text.