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| Number | Title | Issue Date |
| 7744678 | Powdered lime composition, method of preparing same and use thereof Powdered lime composition having a BET specific surface area that is equal to or greater than 25 m2/g and a BJH total pore volume obtained from nitrogen desorption that is equal to or greater than 0.1 cm3/g, and furthermore comprising an alkali... | 06/29/2010 |
| 7387662 | Method and device for separating gaseous pollutants from hot process gases by absorption and a mixer for moistening particulate dust In a method of separating gaseous pollutants from hot process gases, the process gases are passed through a contact reactor (22), in which an absorbent material in a moistened state is introduced to convert the gaseous pollutants into separable dust. The dust... | 06/17/2008 |
| 7261874 | Gas phase electrolyzer process for producing hydrogen The invention provides a method for a sulfur based hydrogen production cycle wherein the sulfur products are maintained in a gaseous state throughout the cycle. The cycle includes a decomposition of a gaseous phase sulfur trioxide to sulfur dioxide and water in a de... | 08/28/2007 |
| 7241430 | Activated carbon for odor control and method for making same An activated carbon-metal oxide matrix is disclosed. The activated carbon-metal oxide matrix may be obtained by a method including the steps of: preoxidizing a carbon material, grinding the preoxidized carbon material; mixing the ground preoxidized material with a m... | 07/10/2007 |
| 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 |
| 7153345 | Sulfur oxide adsorbents and emissions control High capacity sulfur oxide absorbents utilizing manganese-based octahedral molecular sieve (Mn—OMS) materials are disclosed. An emissions reduction system for a combustion exhaust includes a scrubber 24 containing these high capacity sulfur oxide absorbents... | 12/26/2006 |
| 7141093 | Hydrated lime kiln dust recirculation method for gas scrubbing A method of scrubbing a gas stream with re-circulated kiln dust when the kiln dust is hydrated to form a sorbent. The sorbent is re-circulated with un-reacted flue gas stream for scrubbing. ... | 11/28/2006 |
| 7101416 | Method for purification of lens gases used in photolithography and metrology A method and composition for the removal of contaminants in a gas stream used in the contamination sensitive processes of photolithography and metrology are described. The synergistic effect of a combination of an electropositive metal component, a high silica zeoli... | 09/05/2006 |
| 7063732 | High-capacity sulfur adsorbent bed and gas desulfurization method A fuel processing system and method for processing fuel for a fuel cell having a first adsorbent bed for adsorption of high molecular weight organic sulfur-containing compounds and inorganic sulfur-containing compounds, and a second adsorbent bed for adsorption of l... | 06/20/2006 |
| 7014831 | Purification of sulfuryl fluoride Sulfuryl fluoride, which is useful as a fumigant, may be contaminated with sulfur dioxide and possibly other impurities such as sulfuryl chloride, depending on the way it is produced. According to the invention, sulfur dioxide and, if applicable, sulfuryl chloride f... | 03/21/2006 |
| 6962616 | Preparation of adsorbents from organic fertilizer and mineral oil and their application for removal of acidic gases from sulfur containing wet gas streams A method of making an adsorbent which includes: a) thermally drying dewatered sewage sludge to form granulated organic fertilizer; b) treating the fertilizer with mineral oil; and c) pyrolyzing the treated fertilizer at temperatures between about 600° C. and about ... | 11/08/2005 |
| 6911064 | Method and apparatus for the preparation of clean gases A method and apparatus for preventing contamination of a substrate or a substrate surface, and particularly relates to prevention of contamination of raw materials, semi-finished products, base materials of products and substrate surface in a high-tech industry such... | 06/28/2005 |
| 6858192 | Activated carbon for odor control and method for making same An activated carbon-metal oxide matrix is disclosed. The activated carbon-metal oxide matrix may by obtained by a method including the steps of: preoxidizing a carbon material, grinding the preoxidized carbon material; mixing the ground preoxidized material with a m... | 02/22/2005 |
| 6824589 | Materials and methods for the purification of inert, nonreactive, and reactive gases Regenerable gas purifier materials are provided capable of reducing the level of contaminants such as oxygen and water in an inert, nonreactive or reactive gas stream to parts-per-billion levels or sub-parts-per-billion levels. The purifier materials of this inventi... | 11/30/2004 |
| 6773490 | Sulfur trioxide delivery system A process for reversible sorption of sulfur trioxide onto a sorbent comprising a) contacting from about 15% to 100% sulfur trioxide with the sorbent under anhydrous conditions at a temperature of from about 35° C. to about 150° C. thereby sorbing the sulfur trioxi... | 08/10/2004 |
| 6743271 | Air filter for gasoline and diesel engines An air filter for gasoline and diesel engines that drastically improves the burning efficiency of gasoline and diesel engines is provided. The air filter includes a, replaceable filtering member made of natural fibres or synthetic fibres inside an outer box. The nat... | 06/01/2004 |
| 6733570 | Method and apparatus for the preparation of clean gases A method and apparatus for preventing contamination of a substrate or a substrate surface, and particularly relates to prevention of contamination of raw materials, semi-finished products, base materials of products and substrate surface in a high-tech industry such... | 05/11/2004 |
| 6602324 | Sulfur control in ion-conducting membrane systems A method for controlling the sulfur dioxide partial pressure in a pressurized, heated, oxygen-containing gas mixture which is contacted with an ion-conducting metallic oxide membrane which permeates oxygen ions. The sulfur dioxide partial pressure in the ... | 08/05/2003 |
| 6576044 | Process for the purification of nitric oxide A gas mixture comprised of nitric oxide and one or more impurities selected from nitrous oxide, nitrogen dioxide, nitrous acid, sulfur dioxide, carbonyl sulfide, water vapor and carbon dioxide is purified by pressure swing adsorption or temperature swing ... | 06/10/2003 |
| 6464757 | Filter for chemical oxygen generators The filter contains about 1-15% lithium hydroxide and about 85-99% hopcalite material, having a particle size of approximately 20 to 100 mesh, and can be used in combination with a chemical oxygen generator for removing chlorine gas and carbon monoxide.... | 10/15/2002 |
| 6402819 | Fresh air filter The present invention relates to a fresh air filter that comprises a highly air-permissive two- or three-dimensional support made of a cross-linked polymeric foam which includes pores of large dimensions. The support comprises joining portions which are c... | 06/11/2002 |
| 6391090 | Method for purification of lens gases used in photolithography A method and composition for the removal of contaminants in a gas stream used in the contamination sensitive processes of photolithography and metrology are described. The synergistic effect of a combination of an electropositive metal component, a high s... | 05/21/2002 |
| 6340381 | Method and apparatus for the preparation of clean gases A method and apparatus for preventing contamination of a substrate or a substrate surface, and particularly relates to prevention of contamination of raw materials, semi-finished products, base materials of products and substrate surface in a high-tech in... | 01/22/2002 |
| 6296689 | Filter for chemical oxygen generators The filer contains about 1-15% lithium hydroxide and about 85-99% hopcalite material, having a particle size approximately 20 to 100 mesh, and can be used in combination with a chemical oxygen generator for removing chlorine gas and carbon monoxide.... | 10/02/2001 |
| 6221241 | Process for removal of sulphur together with other contaminants from fluids A process for the purification of a fluid stream containing a sulphur contaminant, such as hydrogen sulphide, and mercury, phosphine, stibine, and/or arsenic compounds as a second contaminant wherein said fluid stream is passed through a bed of a particul... | 04/24/2001 |
| 6210466 | Very large-scale pressure swing adsorption processes According to the present invention, a process is provided which overcomes historical limitations to the capacity of PSA units for a wide variety of gas separations. Capacities in excess of about 110 thousand normal cubic meters per hour (100 million stand... | 04/03/2001 |
| 6203598 | Flue gas treating process and system This invention relates to a flue gas treating process including a heat recovery step for recovering heat from flue gas by means of a heat exchanger (4) and thereby cooling the flue gas, and a subsequent absorption step for bringing the flue gas into gas-l... | 03/20/2001 |
| 6174510 | Multi-pass cocurrent flow sulfuric acid tower process A process for the absorbing of a hot, dry gas stream of sulfur trioxide (SO3) in a stream of strong sulfuric acid. The process includes the steps of passing the hot, dry gas stream of SO3 into a sulfuric acid absorption tower above a... | 01/16/2001 |
| 6114273 | Method for sox removal by catalytic carbon An improved process is provided for the removal of sulfur oxides from gas or vapor media containing oxygen and H2 O by contacting the media with a catalytically-active carbonaceous char. The improvement is provided by the use of a catalytically... | 09/05/2000 |
| 6104855 | Terminal assembly for a multiple fiber optic cable A terminal assembly for an optic cable equipped with terminal connectors is provided with a housing having a small through-hole and a large through-hole. A plug for keeping optical fibers within the housing to prevent the optical fibers from getting entan... | 08/15/2000 |
| 6071329 | Filter for chemical oxygen generators The filter contains about 1-5% lithium hydroxide and about 85-99% hopcalite material, having a particle size of approximately 20 to 100 mesh, and can be used in combination with a chemical oxygen generator for removing chlorine gas and carbon monoxide.... | 06/06/2000 |
| 6007706 | Removal of sulphur together with other contaminants from fluids A process for the purification of a fluid stream containing a sulphur contaminant, such as hydrogen sulphide, and mercury, phosphine, stibine, and/or arsenic compounds as a second contaminant wherein said fluid stream is passed through a bed of a particul... | 12/28/1999 |
| 6001152 | Flue gas conditioning for the removal of particulates, hazardous substances, NOx, and SOx The present invention provides compositions including a salt selected from the group consisting essentially of sodium nitrate, sodium nitrite, ammonium nitrate, lithium nitrate, barium nitrate, cerium nitrate, and mixtures thereof, as flue gas conditionin... | 12/14/1999 |
| 5944874 | Solid electrolyte ionic conductor systems for the production of high purity nitrogen A process for separating a feed gas stream containing elemental oxygen and nitrogen to produce a purified nitrogen gas stream by removing oxygen from the feed gas stream using an ion transport membrane to produce a retentate gas stream and a permeate gas ... | 08/31/1999 |
| 5928496 | Hydrotalcite sulfer oxide sorption Hydrotalcite-like materials are stable in the crystalline oxide structure and essentially reversible in anion exchange. A novel process of sulfur oxide sorption is provided utilizing these hydrotalcite materials as contact solids. Large crystalline sheet ... | 07/27/1999 |
| 5922105 | Method and apparatus for the preparation of clean gases A method and apparatus for preventing contamination of a substrate or a substrate surface, and particularly relates to prevention of contamination of raw materials, semi-finished products, base materials of products and substrate surface in a high-tech in... | 07/13/1999 |
| 5906429 | Optical illumination device An optical illumination device reflects and condenses light from a mercury-arc lamp by a light reflecting and condensing member and then reflects and deflects the light, thereafter the reflected and deflected light is transferred to a relay-lens system th... | 05/25/1999 |
| 5858068 | Purification of carbon dioxide Industrial grade carbon dioxide may contain unacceptable amounts of sulfur-containing materials, oxygen, and organic materials particularly detrimental to food-related uses of CO2. These can be effectively removed by a bed of silver-exchanged f... | 01/12/1999 |
| 5733515 | Purification of air in enclosed spaces The present invention discloses an improved method for filtration of air within enclosed spaces. Improvement is achieved by the use of a high-temperature carbonaceous char that is catalytically active for the removal of certain undesirable constituents fr... | 03/31/1998 |
| 5730781 | Regeneration process and plant for absorbents used for processing combustion products in thermal boilers According to the invention, regeneration is performed by filtering and by regenerating simultaneously the used absorbent; two stages are carried out for the regeneration: one, which is a rough stage, is performed in the presence of a regeneration gas; the... | 03/24/1998 |
