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Class 95/95 - Including reduction of pressure


Subclass of Class 95 - Gas separation: processes
Definition: Process in which pressure over a mass of solid sorbent is
No. of patents: 91
Last issue date: 05/08/2012


1      
NumberTitleIssue Date
8172924Method of separating and storing volatile gases
A method of using a crystallographic framework of sterically bulky calixarene molecules to selectively separate and/or store volatile gas components. Sterically bulky calix[4]arenes or their derivatives form a crystalline lattice that has relatively large lattice vo...
05/08/2012
8152901Gas adsorbing device, vacuum heat insulator making use of gas adsorbing device and process for producing vacuum heat insulator
A jacket material into which a gas adsorbing device and core material are inserted is decompressed in a vacuum chamber, the opening is sealed, and then the jacket material is exposed to the atmosphere. In the atmospheric pressure, a pressure of about 1 atm which is ...
04/10/2012
8012241Method and apparatus for condensing ozone gas
The present invention provides a method and an apparatus for condensing ozone arranged so as to efficiently take out the ozone gas of a predetermined concentration, although its construction is simple. The method for condensing the ozone gas comprises acting ozone-o...
09/06/2011
7666252Method of purifying large quantity of exhaust gas containing dilute volatile hydrocarbons
A method of purifying an exhaust gas by way of an adsorption unit (adsorption columns 7a, 7b) including an adsorbent layer paced with precoated mesoporous active carbon capable of alternately switched operations of adsorption and desorpti...
02/23/2010
7608133Lithium-exchanged faujasites for carbon dioxide removal
A process for removal of carbon dioxide from air using lithium-exchanged X-zeolites at low carbon dioxide partial pressures is provided. The process is particularly useful in applications where fresh air is not available and exhaled air needs to be recycled. An appa...
10/27/2009
7594955Process for recovering rare gases using gas-recovering container
A process for recovering rare gases using a gas-recovering container and, more particularly, a process of recovering a rare gas in a rare gas-containing exhaust gas discharged from an equipment using said rare gas, and introducing the recovered rare gas-containing e...
09/29/2009
7468096Apparatus for producing oxygen and method for controlling the same
The present invention concerns the apparatus for producing oxygen, comprising: a first zeolite bed connected to an external air pressurizing device and a depressurizing device for increasing or decreasing an internal pressure thereof; a second zeolite bed connected ...
12/23/2008
7416569Fuel gas production apparatus and method of starting operation of fuel gas production apparatus
A PSA mechanism has adsorption towers. Cleaning valves and off gas valves are connected to the adsorption towers. Valve positions of at least either the cleaning valves or the off gas valves are determined based on an operation suspension period of the PSA mechanism...
08/26/2008
7381242Treatment of hydrogen/hydrocarbon mixtures on adsorbents regenerated at high pressure
A method of PSA gas separation for a gas mixture containing hydrogen and hydrocarbon impurities. The gas mixture is put in contact with silica gel and activated carbon so as to adsorb the impurities in the gas mixture. Hydrogen rich and waste gas flows are produced....
06/03/2008
7357902Process for the removal of oxygen from olefin-containing process streams
Process for the removal of oxygen from a gas mixture comprising oxygen, at least one olefin, hydrogen, carbon monoxide and optionally at least one alkyne, the ratio of oxygen:hydrogen in the gas mixture being 1 part by volume of oxygen to at least 5 parts by volume ...
04/15/2008
7326269NBC filtration unit providing unfiltered and filtered air paths
A filtration unit for use with an environmental control unit (ECU), usually a portable ECU, which includes at least two air flow paths wherein at least one of the air flow paths allows for use of air which has not passed through a nuclear, biological, and chemical (...
02/05/2008
7305842Environmental control system and method for an aircraft
An environmental control system for an aircraft having an air pump that is powered by bleed air from an engine of the aircraft. Although the air pump is powered by engine bleed air, the air pump draws ambient fresh air from outside the aircraft, compresses the fresh...
12/11/2007
7288200System for injecting a by-pass fluid in a separation method in a simulated moving bed
Device and process for separating at least one compound from a mixture in a simulated moving bed, comprising: an enclosure comprising several absorbent beds, two adsorbent beds being separated by a fluid distribution and extraction...
10/30/2007
7217184Electrical generator fluid-flow-coolant filtration method
A ventilating and particle-filtering airflow methodology for managing the flow of air to the electrical sliding-contact zone of an on-board aircraft (vehicle) electrical generator. Conduit structure collects intaken air during aircraft (vehicle) engine operation, fi...
05/15/2007
7191592Diesel engine exhaust system
Apparatus and a method for controlling gas flow into a combustion engine exhaust gas filter e.g., to control filter temperatures during filter regeneration, comprising providing a fluidic exhaust stream diverter proximate to and centrally of the inlet face of the fi...
03/20/2007
7160368System and method for gettering gas-phase contaminants within a sealed enclosure
A getter and method for making is provided for removing unwanted impurities from the main body of a sealed hermetic enclosure or package containing one or more devices or objects that have sensitivity to contact with the impurity. The getter may be formulated from g...
01/09/2007
7153104Method for introducing and activating a getter in a vacuum vessel and getter unit
To prevent partial saturation of a getter by contact with absorbable atmospheric gases when the getter is introduced into a vacuum vessel, a method for introducing and activating the getter and a getter unit includes introducing the getter into the vacuum vessel pac...
12/26/2006
7148392Separation of 1-butene from Cfeed streams
In a process for selectively separating 1-butene from a C4 feed stream comprising at least 1-butene, cis-2-butene and trans-2-butene, the feed stream is passed through a first bed of an adsorbent comprising a crystalline microporous material to form a sub...
12/12/2006
7135059Portable gas fractionalization system
A portable gas fractionalization apparatus that provides oxygen rich air to patients is provided. The apparatus is compact, lightweight, and low-noise. The components are assembled in a housing that is divided into two compartments. One compartment is maintained at ...
11/14/2006
7081153Gas generating system and method for inerting aircraft fuel tanks
The present invention provides a system and method for generation of nitrogen enriched air for inerting aircraft fuel tanks. One embodiment of the present invention includes a duct assembly; a primary heat exchanger; a gas generating system heat exchanger; a first t...
07/25/2006
7052525Vehicle integrated protective system
A protective system having an upstream detection subsystem to detect a contaminant in an airflow and to provide a contaminant signal, an upstream detection subsystem, a filtration subsystem to filter the contaminant from the airflow, a valve adapted to allow selecti...
05/30/2006
7048785Adsorbents for low vapor pressure fluid storage and delivery
A fluid storage and delivery system utilizing a porous metal matrix that comprises at least one Group VIIIB metal therein. In one embodiment, the porous metal matrix forms a solid-phase metal adsorbent medium, with an average pore diameter of from about 0.5 nm to ab...
05/23/2006
7022160Method of purifying gaseous nitrogen trifluoride
The present invention relates to a method of purifying gaseous nitrogen trifluoride from CF4 as impurity. The method comprises selective adsorption of nitrogen trifluoride by dehydrated erionite at a temperature of from −30 to 30° C., displaceme...
04/04/2006
7021296Method and system of evaporative emission control using activated carbon fibers
An evaporative emission control system for a vehicle comprises a scrubber containing an activated carbon fiber material selected to adsorb butane and/or pentane isomer vapors in low concentrations in air passing through the scrubber and to desorb the adsorbed butane...
04/04/2006
7013916Sub-atmospheric gas delivery method and apparatus
An apparatus for containing and delivering hazardous gases at sub-atmospheric pressure from a pressurized container is provided which includes a valve body in sealed communication with an outlet orifice of the pressurized container. The outlet orifice of the pressur...
03/21/2006
7008464Dehydration of wet gas utilizing intimate contact with a recirculating deliquescent brine
A system for removing moisture from a wet gas stream including a vessel having a contact area containing deliquescing salts that produces brine as water is absorbed, the brine flowing to a collection area in the bottom of the vessel. A venturi positioned in a wet ga...
03/07/2006
6997970Oxygen/inert gas generator
A gas generation method and apparatus, capable of use in an aircraft, generates oxygen with at least one On Board Oxygen Generating System (OBOGS) and generates an inert gas with at least one On Board Inert Gas Generating System (OBIGGS) and selectively supplies an ...
02/14/2006
6991671Rectangular parallelepiped fluid storage and dispensing vessel
A fluid storage and dispensing apparatus including a fluid storage and dispensing vessel having a rectangular parallelepiped shape, and an integrated gas cabinet assembly including such fluid storage and dispensing apparatus and/or a point-of-use ventilation gas scr...
01/31/2006
6989044Intermolecularly bound transition element complexes for oxygen-selective adsorption
A process and composition for selectively adsorbing oxygen from a gaseous mixture. The chemisorption is carried out by a porous three-dimensional transition element complex comprised of intermolecularly bound TEC units, said units further comprised of at least one m...
01/24/2006
6960700Adsorbent beds for removal of hydrides from hydrocarbons
A process for removal of trace impurities of hydrides of arsenic, phosphorus, antimony, silicon, and boron and sulfur and oxygenates and compounds containing these impurities from a hydrocarbon stream comprising contacting the hydrocarbon stream with an adsorbent ma...
11/01/2005
6953498Adsorption gas dryer
An adsorption gas dryer has a first drying tower and a second drying tower each having a first port and a second port through which gas can pass into or out of the tower, a first manifold and a second manifold connected respectively to the first and the second ports...
10/11/2005
6939394Gas storage and dispensing system with monolithic carbon adsorbent
A fluid storage and dispensing apparatus, including a fluid storage and dispensing vessel having an interior volume, in which the interior volume contains a physical adsorbent sorptively retaining a fluid thereon and from which the fluid is desorbable for dispensing...
09/06/2005
6932945Adsorbent based gas delivery system with integrated purifier
An adsorbent based gas delivery system is provided which includes a storage and dispensing vessel having a gas outlet conduit and an interior section containing a solid-phase physical sorbent medium having physically sorptive affinity for a gas with the sorbent medi...
08/23/2005
6892473Process for removing water from ammonia
This invention relates to an improvement in a process for removing water from a hydride gas, and particularly ammonia, by contacting the hydride gas with a drying agent under conditions for effecting removal of the water. The improvement for significantly reducing t...
05/17/2005
6806219Exchanged zeolites X, in particular exchanged with lithium, their process of preparation and their use as adsorbents of nitrogen in the separation of the gases of the air
The present invention relates to zeolites X, most of the exchangeable sites of which are occupied by lithium and di- and/or trivalent cations, having an improved thermal stability and an improved crystallinity with respect to zeolites of the prior art with the same ...
10/19/2004
6797038Adsorbents, method for the manufacture thereof and process for the separation of unsaturated hydrocarbons from gas mixture
An adsorbent for selective adsorption of unsaturated hydrocarbons from its mixture with saturated hydrocarbons, carbon dioxide, carbon monoxide, permanent gases or mixture thereof. The adsorbent includes a silver or copper compound in an amount of 1 to 70 wt % and a...
09/28/2004
6764755Channelized sorbent media, and methods of making same
A channelized sorbent material comprises porous sorbent particles characterized by an average pore diameter. Each sorbent particle has at least one interior channel of an average transverse dimension (i.e. transverse diameter) that is at least ten times larger than ...
07/20/2004
6764601Method for granulating powders
The invention relates to a process of coating inorganic particles with organic compositions, and agglomerating, compacting and heating of the coated particles into granules. Coating and compacting the agglomeration may be conducted continuously, and may be used to f...
07/20/2004
6660063Sorbent-based gas storage and delivery system
A capacity increase and/or pressure decrease of gas in a gas storage and dispensing vessel is achieved by use of a physical adsorbent having sorptive affinity for the gas. Such approach enables conventional high pressure gas cylinders to be redeployed wit...
12/09/2003
6613126Method for storing natural gas by adsorption and adsorbing agent for use therein
A method for storing natural gas by adsorption which comprises separating an available natural gas in an infrastructure side (10) into a low carbon number component mainly containing methane and ethane and a high carbon number component mainly containing ...
09/02/2003
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