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7138007 |
Gas separation using molecular sieve SSZ-73
The present invention relates to new crystalline, essentially all silicon oxide molecular sieve SSZ-73 prepared using a 3-ethyl-1,3,8,8-tetramethyl-3-azoniabicyclo[3.2.1]octane cation as a...
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7138006 |
Mixed matrix membranes with low silica-to-alumina ratio 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 alumina containing molecular sieves dispersed therein. The molecular sieves have a...
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7118612 |
Oxygen separation method utilizing an oxygen transport membrane reactor
A method of separating oxygen from an oxygen containing stream in which compressed and heated oxygen is introduced into cathode side of an oxygen transport membrane reactor. Oxygen is permeated...
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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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7074255 |
Noble metal gas barriers
A method for separating gases within a barrier, and a metallic barrier separating the gases is provided for use in solid oxide fuel cells, or SOFC. A network of pores can vent steam formed within...
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7074256 |
Phosphazene membranes for gas separations
A polyphosphazene having a glass transition temperature (“T g ”) of approximately −20° C. or less. The polyphosphazene has at least one pendant group attached to a backbone of the...
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7070694 |
Purification of fluid compounds utilizing a distillation - membrane separation process
Apparatus and processes are disclosed for economical separation of fluid mixtures. Broadly, apparatus of the invention is an integrated fractional distillation and perm-selective membrane...
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7048778 |
Apparatus and method for separating gases
An apparatus and method to separate a mixture of gases, such as carbon dioxide and methane, by a ceramic membrane having a ceramic support and a silica layer. The invention can efficiently separate...
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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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7018445 |
Polyimide blends for gas separation membranes
The present invention provides a selectively gas permeable membrane that has a superior combination of permeability and selectivity. The membrane composition includes a Type 1 copolyimide uniformly...
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7014681 |
Flexible and porous membranes and adsorbents, and method for the production thereof
The invention relates to a method for producing flexible and porous adsorbents based on oxidic and/or non-oxidic ceramic material containing carbon. The inventive method is characterized by the...
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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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6955762 |
Method of cleaning membranes
The present invention relates a method for cleaning polymeric microfiltration membranes and membrane units, and to compositions useful in such methods. The compositions include at least one soluble...
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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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6923846 |
Method of preparing composite gas separation membranes from perfluoropolymers
A method for fabricating a composite membrane includes coating a substrate, such as, for example, an asymmetrical porous hollow fiber substrate, with a solution which includes a perfluorinated...
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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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6913696 |
Separation of components of organic liquids
A pervaporation process for separating organic liquid mixtures of components having differing polarities, uses an ion exchange membrane which comprises a polymerized alkene including pendant groups...
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6896717 |
Gas separation using coated membranes
A membrane-based process for separating mixtures of target gases if the gas mixture also contains C 3+ hydrocarbon vapors. The process uses gas-separation membranes having a base membrane and a...
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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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6872315 |
Pump for low flow rates
The present invention concerns a method of producing flow rates of a transport liquid of about 1 to 1000 nl/min. The method provides a pump having a housing defining a space and including a channel...
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6830691 |
Processes using solid perm-selective membranes in multiple groups for simultaneous recovery of specified products from a fluid mixture
Economical processes of the present invention are for separation of fluid mixtures to recover desired products using apparatus comprising a plurality of membrane modules disposed in a first product...
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6828037 |
Hydrogen-permeable structure and method for manufacture thereof or repair thereof
The invention provides a hydrogen permeable structure, which can effectively prevent peeling-off of a hydrogen permeable film and hence has higher durability, and a method of manufacturing the...
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6818333 |
Thin zeolite membrane, its preparation and its use in separation
Described is a supported zeolite membrane that consists of a zeolite/substrate composite layer that exhibits, in the n-butane/isobutane separation, a permeance of n-butane of at least 6.10 −7 ...
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6818133 |
Semipermeable membranes
The invention relates to semipermeable membranes comprising organically modified silicic-acid polycondensates, to a process for preparing them and to their use in gas exchange and in separation...
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6790258 |
Method for removing condensable aluminum chloride vapor from aluminum etch effluent
A method and apparatus for trapping AlCl 3 from an aluminum etch effluent includes a housing containing disposable trapping medium with a first trapping stage and a second trapping media...
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6776819 |
Gas supplying apparatus and method of testing the same for clogs
A gas supplying apparatus of a system for fabricating semiconductor devices is tested for clogs. The gas supplying apparatus includes a carrier gas supplying device for supplying at least one...
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6767527 |
Method for recovering CO2
A method for recovering substantially all carbon dioxide generated in a combustion process where the method comprises the following steps: a) a sweep gas is used to pick up oxygen on the permeate...
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6755975 |
Separation process using pervaporation and dephlegmation
A process for treating liquids containing organic compounds and water. The process includes a pervaporation step in conjunction with a dephlegmation step to treat at least a portion of the permeate...
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6746513 |
Integrated membrane filter
A gas separation module includes an adsorbent filter medium inside the case that holds the active gas separation membrane. The adsorbent filter is positioned upstream of the membrane and is...
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6740140 |
Hollow fiber membrane system assembly with an internal reflux system
The present invention provides a hollow fiber membrane gas separation assembly having an integral purge control aperture or purge reflux system which is internal to the hollow fiber apparatus. The...
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6730364 |
Preparation of carbon molecular sieve membranes on porous substrate
A method for preparing carbon molecular sieve membrane is invented. A thin carbon-containing film is first deposited on a porous substrate. The thin film is then bombarded by high energy ions for...
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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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6723152 |
Gas separation using membranes formed from blends of perfluorinated polymers
A preferred gas separation membrane made from a blend of a copolymer of 2,2-bis(trifluoromethyl)-4,5-difluoro-1,3-dioxole (BDD) and tetrafluoroethylene (TFE) with a...
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6719825 |
Air drying apparatus and method
Apparatus and methods are disclosed for using membranes to reduce the relative humidity of a compressed air stream. Air dryers employing membranes consist of a permeable membrane capable of...
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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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6706089 |
Disposal unit
The invention relates to a method and apparatus for separating toxic compounds from gaseous mixtures, and more particularly to a method and a portable apparatus for the continuous removal of...
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6706088 |
Method for controlling membrane permeability by microwave and method for producing organic separation membrane
The present invention relates to a method for controlling a permeability of a gas to be separated through an organic separation membrane in a separation process of gasses by an organic separation...
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6660062 |
Chemical modification of polyimides
A process is provided for chemically modifying a dual-layer hollow fibre, wherein the fibre comprises a first layer consisting essentially of a polyimide and a second layer consisting essentially...
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6656361 |
Membrane assisted evaporation process and device for brine concentration
There is disclosed amembrane assisted evaporation process (MAE) for economically and reliably removing water added to brine. The process comprises using low-grade waste heat and air to evaporate...
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6649062 |
Fluid-membrane separation
A process for the separation of mixture components uses a supercritical fluid that is fresh to at least one side of a nonporous membrane after which the fluid is either recycled to the opposite...
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6646177 |
Method for separation of p-xylene
A method for separating p-xylene by separating and recovering only p-xylene from a p-xylene-containing raw material mixture under high-temperature and high-pressure conditions using a zeolite...
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6645276 |
Solid state polymer electrolyte facilitated transport membranes containing surfactants
A facilitated transport membrane with improved permeance and selectivity to alkene-based unsaturated hydrocarbons is provided. The facilitated transport membrane includes a solid state polymer...
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6641643 |
Ceramic deoxygenation hybrid systems for the production of oxygen and nitrogen gases
A gas separation system comprising one or more ceramic membranes is described. The system, particularly, the arrangement of the ceramic membranes and/or other polymeric membranes or PSA systems,...
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6626980 |
Mixed matrix membranes incorporating chabazite type molecular sieves
A device useful for separating the components of gas mixtures includes a selectively gas permeable mixed matrix membrane of a dispersed phase of chabazite type molecular sieve particles uniformly...
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6623714 |
Oxygen separation method using a ceramic membrane unit
A method of separating oxygen using a ceramic membrane unit having one or more ceramic membranes, preferably formed of a mixed conducting ceramic, for instance, a perovskite, capable of conducting...
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6623545 |
Liquid-liquid extraction device and on-line transfer to a gas chromatography apparatus
An extraction device for liquid—liquid extraction of at least one analyte from a sample and on-line transfer of the analyte(s) to a gas chromatography extraction unit, a sample inlet, a sample...
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6605134 |
Method and apparatus for collecting rare gas
There is provided a method and an apparatus for collecting a rare gas, which are capable of effectively collecting the rare gas contained in an exhaust gas exhausted from a rare gas using apparatus...
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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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6602415 |
Polymeric membrane for separation of fluids under elevated temperature and/or pressure conditions
A polymeric composite may be used for forming fluid separation membranes. The fluid separation membranes may go through a separation selectivity maximum as a function of operating conditions (e.g.,...
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6595001 |
Method for utilization of a methane-containing gas
A method of utilizing a methane-containing gas by feeding the methane-containing gas to a gas engine of a gas engine/generator assembly generating electricity comprises the step of passing...
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