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7608131 |
Three flow architecture and method for aircraft OBIGGS
An air separation system and method wherein the outlet of a primary air separation module (one or more modules or bundles of fiber membranes) is split into two flow paths, a low flow path and a...
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7604681 |
Three-stage membrane gas separation process
A process for removing carbon dioxide or nitrogen from gas, especially natural gas. The process uses three membrane separation stages without compression between the second and third stages.
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7537641 |
Natural gas treatment process for stimulated well
A process and equipment for treating natural gas produced by a well that has recently been stimulated, and that contains an undesirably high concentration of the fracturing gas used to stimulate...
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7497894 |
Portable air separation/air dehydration system
A portable system for air separation or air dehydration, or both, is carried on a truck or equivalent vehicle. The air separation system includes, at a minimum, a feed compressor and a gas...
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7491258 |
Fuel tank ventilation device
A gas and liquid separation device for use with a fuel tank. The separation device includes a body having at least one passage therethrough in fluid communication with the fuel tank, and a gas and...
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7487631 |
System and method for supplying reductants to an emission treatment system
System and method for supplying reductants to an emission treatment system. The system includes a fuel tank adapted to supply a premixed fuel stream that includes a primary component and a...
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7473302 |
Liquid housing container and liquid supply apparatus
The present invention provides a durable liquid housing container and a durable liquid supply apparatus which use a gas-liquid separation membrane. Thus, a gas-liquid separation membrane ( 2 )...
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7429287 |
High efficiency gas sweetening system and method
Disclosed are a method and system for sweetening a raw natural gas feed stream using a multi-stage membrane separation process, and in embodiments a two-stage membrane separation process. The...
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7390346 |
System and apparatus for producing primary standard gas mixtures
Provided is a novel system and apparatus for producing primary standard gas mixtures. The system includes providing a gas permeation device having a constant diffusion rate into a temperature...
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7374601 |
Air separation system and method with modulated warning flow
An inerting system and method characterized by a primary air separation module configured to communicate with an upstream source of pressurized air at elevated temperature for production of a...
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7371357 |
Process for removal of pollutants
A process for the removal of pollutants from a combustion process and, more particularly, a process for removing pollutants such as carbon dioxide, mercury, sulphur dioxide, nitrogen compounds and...
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7318898 |
Polymeric membrane wafer assembly and method
A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow...
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7316728 |
Method and apparatus for treating fluids
The present invention is directed to an apparatus for combining a component from a fluid composition with a reactive fluid. The apparatus includes a hollow fiber contactor ( 142 ) having a...
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7309385 |
Efficient 3-D nanostructured gas separation membranes
There is provided a high efficient gas separation membrane of two or more layers, which comprises a separating layer of 3-dimensional nanostructure and a supporting layer, wherein the 3-dimensional...
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7303681 |
Dynamic membrane wafer assembly and method
A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow...
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7258725 |
Gas supplying method and system
Gas supplying method and system in which effective component gas in exhaust gas can be separated and purified efficiently to be resupplied regardless of variation in the flow rate or composition of...
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7255725 |
Porous inorganic membrane containing carbon; a process for its preparation; and use thereof
A porous inorganic membrane comprises at least one inorganic phase having separating properties. Said membrane has a carbon content representing 0.05% to 25% by weight with respect to the mass of...
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7179322 |
Oxygen and nitrogen enriched atmospheres in aircraft
A method of supplying oxygen rich air to the passengers and crew on board a passenger aircraft by use of a highly permeable oxygen enrichment unit, wherein the fiber tubes of the hollow fiber...
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7166146 |
Mixed matrix membranes with small pore molecular sieves and methods for making and using the membranes
A mixed matrix membrane is provided which comprises a continuous phase organic polymer and small pore molecular sieves dispersed therein. The molecular sieves have a largest minor crystallographic...
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7108737 |
Method for the purification of corrosive gases
The present invention relates to a novel process for the preparation of high-purity chemicals with an extremely low particle count, such as ammonia gas, hydrogen fluoride and hydrogen chloride,...
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7025804 |
Method for separating hydrocarbon-containing gas mixtures using hydrocarbon-resistant membranes
A method of separating or concentrating hydrocarbon-containing gas mixtures such as hydrogen from hydrocarbons, carbon dioxide from hydrocarbons, nitrogen from hydrocarbons, and hydrocarbons from...
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6997971 |
Cross-linked polybenzimidazole membrane for gas separation
A cross-linked, supported polybenzimidazole membrane for gas separation is prepared by reacting polybenzimidazole (PBI) with the sulfone-containing crosslinking agent...
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6955707 |
Method of recycling fluorine using an adsorption purification process
A method and apparatus is disclosed for producing fluorine by providing a contained fluorine precursor source located proximate to or remotely from an adsorbent bed, optionally in a replaceable...
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6921428 |
Device and method for separating and collecting halide gas
A halide gas separating and collecting device for separating and collecting halide gas from mixed gas containing the halide gas, wherein at least first and second stage separating membrane modules...
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6887300 |
Cyclic membrane separation process
A cyclic process for controlling environmental emissions of volatile organic compounds (VOC) from vapor recovery in storage and dispensing operations of liquids maintains a vacuum in the storage...
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6840982 |
Storage device utilizing a differentially permeable membrane to control gaseous content
A storage device for the preservation of oxidizable materials is provided. The storage device includes a storage chamber enclosing a storage space where oxidizable materials may be placed and a...
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6726744 |
Mixed matrix membrane for separation of gases
An improved mixed matrix membrane for the separation of gases comprises polyethylene glycol, silicone rubber and activated carbon on a porous support. The membrane preferably also comprises a...
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6723153 |
Isolation of SF6 from insulating gases in gas-insulated lines
Gas mixtures of SF 6 and N 2 which have been used as an insulating filler gas for underground cables can be separated by use of a membrane separation in order to recover the SF 6 .
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6719824 |
Cyclic membrane separation process
A cyclic process for controlling environmental emissions of volatile organic compounds (VOC) from vapor recovery in storage and dispensing operations of liquids maintains a vacuum in the storage...
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6716270 |
Polyimide amic acid salts and polyimide membranes formed therefrom
The invention relates to preparation and uses of novel polymeric materials, polyimide amic acid salts (PIAAS). The use of these materials for the fabrication of fluid separation membranes is...
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6630105 |
Method and apparatus for the gas phase decontamination of chemical and biological agents
An apparatus and method for decontaminating chemical and biological agents using the reactive properties of both the single atomic oxygen and the hydroxyl radical for the decontamination of...
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6630011 |
Nitrogen removal from natural gas using two types of membranes
A process for treating natural gas or other methane-rich gas to remove excess nitrogen. The invention relies on two-stage membrane separation, using methane-selective membranes for the first stage...
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6605133 |
Process and system for separation and recovery of perfluorocompound gases
Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture...
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6592650 |
Gas separation using organic-vapor-resistant membranes and PSA
A process for separating a gas from a gas mixture containing an organic compound gas or vapor by a hybrid separation combining adsorption with membrane gas separation, using membranes selective for...
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6579341 |
Nitrogen gas separation using organic-vapor-resistant membranes
A process for separating nitrogen from a multicomponent gas mixture containing nitrogen and a hydrocarbon, such as natural gas or associated gas, using gas-separation membranes selective for...
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6572679 |
Gas separation using organic-vapor-resistant membranes in conjunction with organic-vapor-selective membranes
A process for treating a gas mixture containing at least an organic compound gas or vapor and a second gas, such as natural gas, refinery off-gas or air. The process uses two sequential membrane...
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6572678 |
Natural gas separation using nitrogen-selective membranes of modest selectivity
A process for treating natural gas or other methane-rich gas to remove excess nitrogen and optionally excess carbon dioxide, water vapor or hydrogen sulfide. The invention relies on gas separation...
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6565626 |
Natural gas separation using nitrogen-selective membranes
A process for treating natural gas or other methane-rich gas to remove excess nitrogen and carbon dioxide simultaneously. The invention relies on membrane separation using nitrogen/methane and...
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6482251 |
Method and apparatus for separating and recovering perfluoro compound
A PFC separation recovery method to separate and recover PFC by raising the pressure of diluted mixed gas consisting of PFC gas and diluent gas, and subsequently contacting the gas with a membrane...
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6454837 |
Separation of gases containing SF6
Gas mixtures of SF 6 and N 2 , which have been used, for example, as an insulating filler gas for underground cables, for insulating-gas window panes or as a filler gas for car tires and SF 6 /air...
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6454836 |
Method and apparatus for wellbore gas separation
A downhole preferential hydrocarbon gas recovery system and method employ preferentially selective materials to separate the hydrocarbon gas from contaminants. According to one aspect of the...
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6440196 |
Method for purifying and concentrating a gas mixture into a minor constituent, method for detecting this constituent, and installation
A method for purifying a minority constituent and concentrating it in a majority constituent of a gas mixture that also contains one or more other minority constituent(s) employs (i) a selective...
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6425267 |
Two-step process for nitrogen removal from natural gas
A process for treating natural gas or other methane-rich gas to remove excess nitrogen. The invention relies on membrane separation using methane-selective membranes, but does not require the...
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6395067 |
Geometric separation processes involving modified CTS membranes
Porous titanium silicate molecular sieves are produced in the form of a membrane capable of separating fluid molecular mixtures.
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6395066 |
Partially carbonized asymmetric hollow fiber separation membrane, process for its production, and gas separation method
A partially carbonized asymmetric hollow fiber separation membrane which is a hollow fiber separation membrane having an asymmetric structure obtained by partial carbonization of an aromatic...
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6361582 |
Gas separation using C3&plus hydrocarbon-resistant membranes
A process for separating a gas from a gas mixture containing the gas and a C 3+ hydrocarbon vapor, using gas-separation membranes selective for the gas over the C 3+ hydrocarbon vapor. The...
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6348083 |
Process and installation for the recovery and/or purification of the nitrous oxide contained in a waste gas
An installation and a process for the recovery and/or purification of at least one portion of the nitrous oxide (N 2 O) contained in a flow of waste gas containing nitrous oxide and at least one...
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6293996 |
Fuel storage system with vent filter assembly
A fuel storage system is provided including a storage tank, an exhaust port, a filter system, a primary pump, and at least one secondary pump. The storage tank includes a fuel delivery port, a...
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6290750 |
Production plant and process comprising several treatment steps
The plant for producing a product stream includes, mounted in series, several modules adapted to perform successive and distinct elementary treatments. At least two elementary treatment modules...
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6224677 |
Gas recovery unit utilizing dual use of gas
A CVD device A is provided which is equipped with a gas introduction part A3 having an inert gas supply part G1 for supplying a diluting inert gas and a cleaning gas supply path G2 for supplying a...
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