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| Number | Title | Issue Date |
| 7393381 | Removing siloxanes from a gas stream using a mineral based adsorption media A plurality of different layers of filter media are used to remove siloxanes from a gas stream. Based on an analysis of the specific gas stream to be filtered, a filter media having an average pore size enabling the preferential removal of a specific class of contam... | 07/01/2008 |
| 7316732 | Air treatment filter and related method An activated carbon filter that treats a gas stream having a varying relative humidity, the gas stream contaminated with at least one of formaldehyde, an acid gas and an alkaline gas. The filter includes a plurality of activated carbon granules mixed together in a c... | 01/08/2008 |
| 7264648 | Removing siloxanes from a gas using a segmented filtration system customized to the gas composition A plurality of different layers of filter media are used to remove siloxanes from a gas stream. Based on an analysis of the specific gas stream to be filtered, a filter media having an average pore size enabling the preferential removal of a specific class of contam... | 09/04/2007 |
| 7238223 | Acoustical stimulation of vapor diffusion system and method An apparatus for removing constituents from a fluid stream is provided. The apparatus includes a duct, a collection device, a sorbent injector, and an acoustic generator. The duct has a fluid passageway to receive a fluid stream having constituents. The collection d... | 07/03/2007 |
| 7214254 | Method of removing mercury from mercury contaminated materials A method of reducing mercury levels in a mercury contaminated material using microwave energy. The method comprises the steps of (a) placing the mercury contaminated material in a microwave reactor; (b) providing a stream of gas in the microwave reactor, the stream ... | 05/08/2007 |
| 7160360 | Purification of hydride gases Purification material for removing a contaminant from an impure hydride gas comprising an adsorbent comprising a reduced metal oxide on a porous support and a desiccant. The porous support may be selected from the group consisting of activated carbon, alumina, silic... | 01/09/2007 |
| 7150779 | Modulated acoustic agglomeration system and method An acoustic agglomerator for agglomerating constituents in a fluid is provided. The acoustic agglomerator includes an area containing a fluid having constituents and an acoustic generator operable to generate a modulated acoustic field to enhance agglomeration of th... | 12/19/2006 |
| 7141091 | Method and apparatus for removing particulate and vapor phase contaminants from a gas stream The present invention provides methods for removing particulate and a vapor phase contaminant from a gas stream including, in one embodiment, directing a gas stream comprising fly ash and a vapor phase contaminant into a particulate collection device, wherein the pa... | 11/28/2006 |
| 7101417 | Activated carbon for odor control and method for making same An activated carbon/metal oxide filter element is disclosed. The filter element may be prepared by blending an activated carbon, a metal oxide, and a binder to form a filter media mixture, shaping the filter media mixture into a filter body. The filter body may be c... | 09/05/2006 |
| 7022162 | Use of a material and a method for retaining polyhalogenated compounds It is the object of the invention to provide a material for retaining polyhalogenated compounds, the material avoiding the drawbacks of activated carbon and polyolefins. The object is accomplished by the use of a material for retaining polyhalogenated compounds, hav... | 04/04/2006 |
| 6964695 | Method and equipment for removing volatile compounds from air A regenerable adsorber for removing VOCs from gas streams consists of a porous monolithic carbon which can be regenerated by heating by passing an electric current through it. ... | 11/15/2005 |
| 6960243 | Production of drinking water from air A method and apparatus for the extraction of water from a gas stream, such as atmospheric air. The method includes contacting the gas stream with a porous adsorbent material having a surface modifying agent adsorbed on the surface of a porous support. The surface mo... | 11/01/2005 |
| 6953494 | Sorbents and methods for the removal of mercury from combustion gases A method for removing mercury and mercury-containing compounds from a combustion gas in an exhaust gas system has the steps of providing a mercury sorbent; injecting the mercury sorbent into a stream of the mercury-containing combustion gas for a sufficient time to ... | 10/11/2005 |
| 6932956 | Production of sulphur and activated carbon A petroleum coke-based combined De-SOx and De-NOx process is described comprising use of four key units, namely, a flue gas concentrator (FC), a carbothermal reducer (CR), an elemental sulphur condenser (SC) and an oxidizer for reduced sulphur and nitrogen species (... | 08/23/2005 |
| 6843831 | Process for the purification of flue gas A process for the purification of flue gas, comprising the step of contacting flue gas with a carbonaceous material comprising a solid carbonaceous residue of synthetic rutile production from titaniferous ores. ... | 01/18/2005 |
| 6764755 | Channelized 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 |
| 6761753 | Methods using filters employing both acidic polymers and physical-adsorption media A filter includes at least two different adsorptive media. First, chemisorptive media, which is porous and includes an acidic functional group, is used to remove molecular bases, including ammonia, organic amines, imides and aminoalcohols, from the atmosphere used i... | 07/13/2004 |
| 6743278 | Gas 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... | 06/01/2004 |
| 6716271 | Apparatus and method for inhibiting decomposition of germane A germane storage and dispensing system, in which germane gas is sorptively retained on an activated carbon sorbent medium in a vessel containing adsorbed and free germane gas. The activated carbon sorbent medium is deflagration-resistant in relation to the germane ... | 04/06/2004 |
| 6709482 | Method for reducing trace impurities from a reactive fluid using preconditioned ultra-low emission carbon material Trace impurities such as organic compounds and carbon monoxide in reactive fluids such as ammonia, hydrogen chloride, hydrogen bromide, and chlorine are reduced to sub-ppb levels using gas purifying systems that contain a preconditioned ultra-low emission (P-ULE) ca... | 03/23/2004 |
| 6702875 | Carbon fiber filters for air filtration Described are filters containing free-activated carbon fibers or activated carbon fibers in the form of a composite used for filtering a variety of contaminants, including pathogens, from air. These filters can provide effective and efficient removal of c... | 03/09/2004 |
| 6669760 | Separation of C2F6 from CF4 by adsorption on activated carbon This invention relates to an improvement in a process for removing C2 F6 as an impurity from a CF4 containing gas, preferably CF4 produced by the reaction of F2 with carbon. The improvement in the pro... | 12/30/2003 |
| 6660064 | Activated carbon as sole absorbent in rapid cycle hydrogen PSA A pressure swing adsorption process for recovering a product gas from a feed gas, includes: supplying a pressure swing adsorption apparatus including an adsorbent composition containing activated carbon as a major ingredient, wherein the adsorbent composi... | 12/09/2003 |
| 6645902 | Adsorbent having capability of decomposing organic halogen compounds and method for producing the same An adsorbent and process for producing an absorbent capable of decomposing an organic halogen compound, is provided. The adsorbent can adsorb organic halogen compounds contained in waste gases and can assuredly decompose them without synthesizing them. A ... | 11/11/2003 |
| 6613126 | Method 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 |
| 6558454 | Method for removal of vapor phase contaminants from a gas stream by in-situ activation of carbon-based sorbents A process for removing vapor phase contaminants from a gas stream includes the step of adding a raw carbonaceous starting material into a gas stream having an activation temperature sufficient to convert the raw carbonaceous starting material into an acti... | 05/06/2003 |
| 6537347 | Method for deciding on the timing of replacing a chemical filter, filter life detection sensor, chemical filter unit, and semiconductor manufacturing apparatus A chemical filter unit 10 is made of a chemical filter 12 and a filter life detection sensor 1. The filter life detection sensor 1 is provided with an adsorption state detection sensor 3 and a reference sensor 4 to which a flow of air is blocked. The sens... | 03/25/2003 |
| 6521021 | Thief process for the removal of mercury from flue gas A system and method for removing mercury from the flue gas of a coal-fired power plant is described. Mercury removal is by adsorption onto a thermally activated sorbent produced in-situ at the power plant. To obtain the thermally activated sorbent, a lanc... | 02/18/2003 |
| 6497750 | Pressure swing adsorption process A pressure swing adsorption process for the separation of nitrogen from a mixture of same with methane, utilizing two separate PSA stages, one containing a nitrogen selective adsorbent and the second containing a methane-selective adsorbent. In the proces... | 12/24/2002 |
| 6451094 | Apparatus and method for removal of vapor phase contaminants from a gas stream by in-situ activation of carbon-based sorbents A process for removing vapor phase contaminants from a gas stream includes the step of adding a raw carbonaceous starting material into a gas stream having an activation temperature sufficient to convert the raw carbonaceous starting material into an acti... | 09/17/2002 |
| 6444012 | Selective removal of nitrogen from natural gas by pressure swing adsorption A pressure swing adsorption process for the separation of nitrogen from natural gas utilizes two separate pressure swing adsorption stages, the first containing a hydrocarbon-selective adsorbent and the second containing a nitrogen-selective adsorbent. In... | 09/03/2002 |
| 6425939 | Process for the production of hydrogen using a carbonated adsorbent with selected dubinin parameters A process for the purification of a gaseous hydrogen flow containing one or more gaseous impurities from the group consisting of carbon monoxide, water vapor, nitrogen, H2 S, chlorine, C1 -C3 light alcohols, ammonia, carbo... | 07/30/2002 |
| 6425941 | Oxidation resistant granular activated carbon The present invention is directed to an activated carbon composition that is resistant to oxidation and the activated carbon bed fires that can result from uncontrolled oxidation of the activated carbon bed. The activated carbon composition of the present... | 07/30/2002 |
| 6406519 | Gas cabinet assembly comprising sorbent-based gas storage and delivery system A gas supply system including a gas cabinet defining an enclosure including therein a gas dispensing manifold and one or more adsorbent-based gas storage and dispensing vessels mounted in the enclosure and joined in gas flow communication with the gas dis... | 06/18/2002 |
| 6402813 | Process for purifying a gas by adsorption of the impurities on several active carbons The gas stream containing one or more gaseous impurities from the group formed by carbon dioxide, water vapor, H2 S, alcohols, SO2 and C1 -C8 saturated or unsaturated, linear, branched or cyclic hydrocarbons is ... | 06/11/2002 |
| 6325841 | Purifying agent and purification method for halogen-containing exhaust gas A cleaning agent and a cleaning process for efficiently removing noxious halogen-based gases such as fluorine, chlorine, boron trifluoride, boron trichloride and tungsten hexafluoride from exhaust gases from semiconductor fabrication processes. The cleani... | 12/04/2001 |
| 6322613 | Process for the recovery of mercury from a gaseous mixture Adsorption of mercury on activated carbons derived from scrap tires enables the removal and recovery of mercury from combustion/incineration flue gas, with concurrent control of SO2 and NOx.... | 11/27/2001 |
| 6322614 | Device for high-purity filtering and disinfecting breathing air The present invention refers to a device for high-purity filtering and disinfecting breathing air. The device includes a fine-dust filter and fan arranged on a housing. An elongate air flow tube is also arranged on the housing and is oriented to receive a... | 11/27/2001 |
| 6309449 | Gas accumulator A gas accumulator for storing pressurized gases, in particular gaseous fuels such as hydrogen or the like, which gas accumulator has a sealed vessel which is provided with a valve-actuated feed line and outlet line for the pressurized gas and with a solid... | 10/30/2001 |
| 6277179 | Agglomerates based on active charcoal, their process of preparation and their use as adsorption agents Agglomerates based on active charcoal and on binder exhibit a good resistance to disintegration in a liquid medium as well as an excellent resistance to crushing and an excellent thermostability up to 350° C. They are prepared by mixing active charcoal p... | 08/21/2001 |
