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7618558 Process for cleaning gases from gasification units  
A process for cleaning gases from a gasification unit comprising the steps of: gasifying a fuel to raw synthesis gas comprising carbon monoxide and steam in a gasification reactor in the...
7569199 Method to remove sulfur or sulfur-containing species from a source  
High surface area iron oxides that can be ferroxane-derived iron oxides are described, as well as methods of using the same to remove at least a portion of one or more sulfur-containing species...
7563424 Method for removing sulfur compounds from fluids using compressed metal oxide composition particles  
The present invention relates to a compressed metal oxide composition particle comprised of metal oxide and an organic binder, with the binder preferably being a water insoluble cellulose...
7510692 Hydride gas purification for the semiconductor industry  
A method for hydride gas purification uses materials having at least one lanthanide metal or lanthanide metal oxide. The method reduces contaminants to less than 100 parts per billion (ppb),...
7481985 Method of removing impurities from a gas  
The present invention provides for a method and apparatus for purifying carbon dioxide. Sulfur species are efficiently and effectively removed from the carbon dioxide by a series of steps which...
7427357 Process and apparatus for anaerobic treatment of sulfur compound-containing wastewater  
An object of the present invention is to provide a process for a high-performance upflow anaerobic sludge treatment (methane fermentation treatment) targeting an organic wastewater containing an...
7427385 Systems and processes for reducing the sulfur content of hydrocarbon streams  
Systems and processes for removing a first sulfur compound from a hydrocarbon stream. The systems and process utilize at least one reaction vessel incorporating a hydrolysis catalyst suitable for...
7374737 Use of a tiO2 composition as catalyst for hydrolyzing COS and/or HCN  
The invention concerns the use of a composition based on TiO 2 as a catalyst for hydrolyzing COS and/or HCN in a gas mixture, said composition comprising at least 1% by weight of at least one...
7357905 Process for eliminating sulfur-containing compounds by direct oxidation  
The invention relates to a process for direct oxidation into sulfur and/or into sulfate of sulfur-containing compounds that are contained in an amount that is less than 10% by volume in a gas, in...
7354560 Process for the production of hydrogen  
Process for the removal of organic and/or inorganic sulfur from an ammonia stream by passing said stream through a fixed bed of sulfur absorbent in a sulfur absorber and withdrawing a sulfur-free...
7323151 Process for the selective removal of sulphur compounds from synthesis gas  
A process for the selective removal of sulphur compounds from synthesis gas being rich in carbon monoxide and containing hydrogen, carbon monoxide and containing hydrogen, carbon dioxide and steam...
7250483 Inhibition of catalytically active impurities in polycarbonate by the melt transesterification process  
An improvement to the melt transesterification process for the preparation of polycarbonate is disclosed. The improvement entails adding to the process between its medium viscosity reactor and a...
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...
7067093 Attrition resistant, zinc titanate-containing, reduced sulfur sorbents and methods of use thereof  
Reduced sulfur gas species (e.g., H 2 S, COS and CS 2 ) are removed from a gas stream by compositions wherein a zinc titanate ingredient is associated with a metal oxide-aluminate phase material in...
7033566 Photocatalyst and use thereof for decomposing chemical substance  
A photocatalyst including a metal oxide semiconductor represented by the formula: In 1−x M x AO 4
6951635 Zinc oxide-based sorbents and processes for preparing and using same  
Zinc oxide-based sorbents, and processes for preparing and using them are provided, wherein the sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The...
6942842 Process for the desulfurization of CO gas  
The present invention provides a process for the preparation of carbon monoxide gas (CO gas) that is free of sulfur compounds to the greatest possible extent and a process to use that gas in...
6905592 Process for the desulphurization of feed streams  
The invention relates to: a process for the desulphurization of feed streams comprising: supplying a hot process stream to a lead catalyst bed ( 8 ) comprising a first sulphur-removing catalyst and...
6887445 Process for sulfur scavenging  
In ridding fluids, including hydrocarbon fluids, both gaseous and liquid, of sulfur compounds including hydrogen sulfide, oxides of sulfur, and thiols, the present invention uses a small quantity...
6800259 Methods to control H2S and arsine emissions  
Methods to control hydrogen sulfide and/or arsine emissions are described. The method involves adding at least one copper compound (such as a copper(II) compound) to the material, such as material...
6743405 Low temperature sorbents for removal of sulfur compounds from fluid feed streams  
A sorbent material is provided comprising a material reactive with sulfur, a binder unreactive with sulfur and an inert material, wherein the sorbent absorbs the sulfur at temperatures between 30...
6726852 Method of manufacturing synthesis gas  
A method of manufacturing a synthesis gas containing hydrogen and carbon monoxide comprises steps of removing only hydrogen sulfide from a natural gas containing hydrogen sulfide and carbon dioxide...
6684627 Method of purifying exhaust gas from internal combustion engine  
The present invention is a method of solidifying sulfur component being the cause of “SOx poisoning” by use of a sulfur solidifier. The solidifier includes a metal element having a function of...
6610264 Process and system for desulfurizing a gas stream  
A process and system is disclosed for removing sulfur from tail-gas emitted from a Claus sulfur recovery process. First, the tail-gas is oxidized so as to convert sulfur therein to sulfur oxides....
6607704 Sulfur tolerant lean NOx trap  
An integrated lean NO x trap. The integrated lean NO x trap includes a lean NO x trap containing a composite metal oxide mixture consisting essentially of about 80-100 wt % stoichiometric spinel...
6588205 Exhaust gas purifying apparatus  
An exhaust gas purifying apparatus is provided which includes a three way catalyst provided in an exhaust pipe of an internal combustion engine; and a NOx adsorption/reduction catalyst provided in...
6383464 Method for reducing sulfur-oxide emissions from an asphalt air-blowing process  
A method for substantially reducing sulfur-oxide emissions from an asphalt air-blowing process involves adding an emission-reducing additive to the asphalt prior to air-blowing, or early in the...
6350422 Sorbent compositions  
A process for removing hydrogen sulfide from a fluid stream by contacting a hydrogen sulfide-containing stream with a sorbent composition wherein said sorbent composition is produced by mixing at...
6297189 Sulfide catalysts for reducing SO2 to elemental sulfur  
A highly efficient sulfide catalyst for reducing sulfur dioxide to elemental sulfur, which maximizes the selectivity of elemental sulfur over byproducts and has a high conversion efficiency....
6281164 SOx additive systems based upon use of multiple particle species  
The useful life of SO x additives having a SO 2 ➝SO 3 oxidation catalyst component and a SO 3 absorption component can be extended by employing each of these components as separate and...
6251348 Process for increasing the reactivity of sulfur compound scavenging agents  
A process is provided for removing sulfur compounds, such as hydrogen sulfide, sulfur oxides and thiols, out of fluids, such as natural gas or natural gas liquids, by contacting the fluid with a...
6224840 γ-Al2O3 sorbent impregnated with alkali salt and CuO  
The present invention relates to a γ-Al 2 O 3 sorbent impregnated with alkali salt and CuO, which has a superior SO 2 sorption capacity and a high regeneration conversion rate. A γ-Al 2 O 3 ...
6221277 Composition for removing sulfur compounds from fluids  
The present invention relates to an activated metal oxide and methods for removing sulfur compounds from fluids, whereby the activated metal oxide includes an amount of metal oxide and an amount of...
6126911 Metal oxide product suitable for use in dehydrated gas  
The present invention relates to the use of metal oxide particles held on carrier particles and moistened with a hygroscopic moistening agent, preferably glycol, with the moistened metal oxide...
6103208 Adsorbent for ethylene, method for adsorbing and removing ethylene and method for purifying an exhaust gas  
A method for purifying an exhaust gas by contacting the exhaust gas with an exhaust gas-purifying catalyst comprising a nitrogen oxide-removing catalyst and an adsorbent for ethylene comprising a...
6099819 Catalysts for the selective oxidation of hydrogen sulfide to sulfur  
This invention provides catalysts for the oxidation of hydrogen sulfide. In particular, the invention provides catalysts for the partial oxidation of hydrogen sulfide to elemental sulfur and water....
6096278 Process and device for treating gas flows  
Process for purifying a gas flow with respect to at least one of the impurities capable of being oxidized and/or reduced which it contains, in which the gas flow is subjected to at least the...
6083473 Selective oxidation catalyst, preparation and use thereof  
A catalyst for selective oxidation of sulfur-containing compounds comprising a metal of Group VIIIA which forms an active metal oxide supported on a support comprising a laminar phyllosilicate,...
6074984 SO.sub.x Additive systems based upon use of multiple particle species  
The useful life of SO X additives having a SO 2 ➝SO 3 oxidation catalyst component and a SO 3 absorption component can be extended by employing each of these components as separate and...
6048821 SO.sub.x additive systems based upon use of multiple particle species  
The useful life of SO X additives having a SO 2 ➝SO 3 oxidation catalyst component and a SO 3 absorption component can be extended by employing each of these components as separate and...
6042798 Method of desulfurization of hydrocarbons  
A method for the desulfurization of hydrocarbons by desulfurizing unsaturated hydrocarbons or hydrocarbon materials containing unsaturated hydrocarbons, in the presence or absence of hydrogen,...
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...
5853684 Catalytic removal of sulfur dioxide from flue gas  
The present invention provides novel catalysts for the simultaneous removal of SO 2 and NO x from flue gases. The catalysts may be supported or unsupported, pretreated or untreated, but allow the...
5785938 Process using recyclable sorbents for the removal of sox from flue gases and other gas streams  
A process for removing and then capturing noxious sulfur oxides from gas streams, particularly from the flue gases of coal-burning power plants, using Ni-containing heated layered double hydroxide...
5780000 Use of Z-Sorb process as catalytic incinerator for tail gas from sulfur plants  
An apparatus and process for removing and incinerating sulfur from tail gas being emitted from a Claus Recovery Sulfur Unit (SRU) or a Tail Gas Clean-up Unit (TGCU) is provided. The gas is...
5776331 Process to remove sulfur using zinc containing sorbent subjected to steam treatment  
A sorbent composition is provided comprising: (a) a zinc component; (b) a colloidal oxide component; and (c) a metal oxide component. This sorbent composition can be subjected to a steaming...
5753198 Hot coal gas desulfurization  
A method of fuel gas desulfurization comprises the steps of introducing fuel, such as coal, into a gasifier, heating the fuel in the gasifier to a temperature so as to form a gaseous fuel mixture...
5700439 Method of removing hydrogen sulfide from hot gas mixtures  
Coated sulfur sorbent particles have been found to resist agglomeration when used in industrial processes generating sulfur vapors at elevated temperatures, even in the presence of hydrogen...
5674463 Process for the purification of carbon dioxide  
Sulfur compounds are removed from gaseous carbon dioxide by contacting the carbon dioxide with water vapor in the presence of a carbonyl sulfide hydrolysis catalyst, thereby converting carbonyl...
5547649 Hydrogen sulfide conversion with nanophase titania  
A process for disassociating H 2 S in a gaseous feed using an improved catalytic material in which the feed is contacted at a temperature of at least about 275° C. with a catalyst of rutile...
Matches 1 - 50 out of 122 1 2 3 >