An air separation module includes a plurality of fibers located within a casing. A fiber membrane defines an exterior of each of the plurality of fibers. The fiber membrane also forms an interior passage along a length of each of the plurality of fibers. The fiber membrane is configured to permeate a gas through the fiber membrane. At least one perforated canister is placed between the plurality of fibers. The at least one perforated canister is configured to collect a permeated gas from the plurality of fibers.

A portable oxygen generating system is provided that comprises a reaction chamber, a feed system for providing and controlling hydrogen peroxide solution to the reaction chamber, and a cooling/condensing system for cooling the hot oxygen and water vapor leaving the reactor and condensing and removing water. The portable chemical oxygen generation system produces humidified, breathable oxygen, that is substantially free of hydrogen peroxide and other contaminants, at a controlled flow and temperature over an extended period of time.

An air separation module includes a plurality of fibers located within a casing. A fiber membrane defines an exterior of each of the plurality of fibers. The fiber membrane also forms an interior passage along a length of each of the plurality of fibers. The fiber membrane is configured to permeate a gas through the fiber membrane. At least one perforated canister is placed between the plurality of fibers. The at least one perforated canister is configured to collect a permeated gas from the plurality of fibers.

A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of an amorphous perfluorinated dioxolane and a fluorovinyl monomer. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon AF, Hyflon AD, and Cytop.

An air separation module includes a plurality of fibers located within a casing. A fiber membrane defines an exterior of each of the plurality of fibers. The fiber membrane also forms an interior passage along a length of each of the plurality of fibers. The fiber membrane is configured to permeate a gas through the fiber membrane. At least one perforated canister is placed between the plurality of fibers. The at least one perforated canister is configured to collect a permeated gas from the plurality of fibers.

A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of an amorphous perfluorinated dioxolane and a fluorovinyl monomer. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers such as Teflon AF, Hlyflon AD, and Cytop.

The present invention relates a process and apparatus that recovers a helium rich stream from a mixed gas having low concentrations of helium therein. More specifically, the invention relates to an integrated process and apparatus for treating a mixed feed gas from an operating process that produces a fluid product from natural gas containing helium, such as processes that produce ammonia, methanol, or liquid hydrocarbons.

The invention relates to a catalytic activation layer for use in oxygen-permeable membranes, which can comprise at least one porous structure formed by interconnected ceramic oxide particles that conduct oxygen ions and electronic carriers, where the surface of said particles that is exposed to the pores is covered with nanoparticles made from a catalyst, the composition of which corresponds to the following formula:

A.sub.1-x-yB.sub.xC.sub.yO.sub.R where: A can be selected from Ti, Zr, Hf, lanthanide metals and combinations thereof; B and C are metals selected from Al, Ga, Y, Se, B, Nb, Ta, V, Mo, W, Re, Mn, Sn, Pr, Sm, Tb, Yb, Lu and combinations of same; and A must always be different from B. 0.01 <x<0.5; 0<y<0.3.

Disclosed is an asymmetric gas separation membrane made of a soluble aromatic polyimide having a specific repeating unit, the soluble aromatic polyimide including: as a tetracarboxylic acid component, a biphenyl structure and a phenyl structure; as a diamine component, a 3,3-diaminodiphenyl sulphone and a diaminodibenzothiophene, a diaminodibenzothiophene=5,5-dioxide, a diaminothioxanthene-10,10-dione, or a diaminothioxanthene-9,10,10-trione. Disclosed is a method for selectively separating and recovering a specific gas species from a mixed gas composed of a plurality of gas species using the asymmetric gas separation membrane, a method for selectively separating and recovering a nitrogen-rich gas from air using the asymmetric gas separation membrane, and a method for selectively separating carbon dioxide gas from a mixed gas containing carbon dioxide and methane and recovering methane-rich gas using the asymmetric gas separation membrane.

A method of recycling helium from a waste gas generated in a semiconductor process includes forming a first treatment gas by treating helium-containing waste gas emitted from a semiconductor process facility by using a scrubber module, transporting the first treatment gas to a purification facility, forming a first helium gas with a first purity by fractionating the first treatment gas in the purification facility, forming a second helium gas with a second purity by treating the first helium gas by using a back-end purification module in the purification facility, and providing the second helium gas to the semiconductor process facility.