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| Number | Title | Issue Date |
| 7431900 | Hydrogen peroxide vapor system with replaceable desiccant cartridge A hydrogen peroxide vapor generation unit (10) receives hydrogen peroxide and water solution at an interface (20) and interconnects with an air dryer (14) by way of nipples (72, 92). In one embodiment, the dryer includes a clamping assemb... | 10/07/2008 |
| 7204867 | High pressure gas processing configurations and methods Contemplated plants comprise an acid gas removal unit that receives a compressed gas from an injection gas compressor, wherein acid gas is removed from the compressed gas in the acid gas removal unit at a pressure approximately above pipeline pressure. ... | 04/17/2007 |
| 7135058 | Polluted air treatment method and system A system for removing at least one pollutant from an air stream exhaust, the system including a plurality of enclosures through which the air stream exhaust is directed to cool the air stream exhaust, a plurality of barriers within each respective enclosure to imped... | 11/14/2006 |
| 7097691 | Method for producing pigment nano-particles Method for producing pigment nano-particles may include vaporizing a pigment precursor material; drawing the vaporized pigment precursor material into a precipitation conduit; contacting the vapor in the precipitation conduit with a collection fluid at a first locat... | 08/29/2006 |
| 6869466 | Cucurbiturils and method for binding gases and volatiles using cucurbiturils In accordance with the invention, there is provided a method of binding a gas or volatile compound in a cucurbituril, by contacting the gas or volatile compound with the cucurbituril to form a cucurbituril-gas/volatile complex. There is also provided a method of sep... | 03/22/2005 |
| 6797035 | Oxidizing additives for control of particulate emissions The present invention discloses a process for removing undesired particles from a gas stream including the steps of contacting an additive containing nitrate and/or nitrite anions with the gas stream; collecting the undesired particles and additive on a collection s... | 09/28/2004 |
| 6726747 | Methods and apparatuses for treatment of syngas and related gases An improved methane wash cycle is disclosed wherein a reduced amount of methane wash is required, thereby allowing for savings in energy costs in operation of the cycle and capital costs in constructing the cycle. Further embodiments allow for an energy recovery and... | 04/27/2004 |
| 6625977 | Method and a system for removing particulates and toxic substances from an exhaust of an engine that use hydrocarbons as a fuel A method and a system for treating an internal combustion engine exhaust gas using a hydrocarbons as fuel. The internal combustion engine exhaust gas contains particulates and toxic substances. Such particulates and toxic substances being liquid and gaseo... | 09/30/2003 |
| 6572680 | Carbon dioxide gas separation using organic-vapor-resistant membranes A process for separating carbon dioxide from a multicomponent gas mixture containing carbon dioxide and a hydrocarbon, such as natural gas or associated gas, using gas-separation membranes selective for carbon dioxide over the hydrocarbon. The membranes u... | 06/03/2003 |
| 6391093 | Welding filtration system A weld chamber has an air intake and an exhaust or evacuating ductwork for evacuating gases and other particles from the welding chamber. The evacuating ductwork is connected to a vacuum source to remove gases and by products from the weld chamber during ... | 05/21/2002 |
| 6336958 | Method for purifying gas loaded with dust A Method for purifying gas loaded with dust particles of various sizes, which method includes the following steps: (a) the gas loaded with dust particles is subjected to wet gas scrubbing at or above the dew point, during which operation any acid gaseous compo... | 01/08/2002 |
| 6306248 | Method for transforming diverse pulp and paper products into a homogenous cellulosic feedstock A method for treating diverse pulp and paper products to produce a homogenous cellulosic feedstock comprises the steps of feeding diverse pulp and paper products into a vessel, introducing steam into the vessel while agitating the products, purging the ga... | 10/23/2001 |
| 6284022 | Method for removing contaminants from a gas stream The invention relates to methods for removing gaseous contaminants and aerosols from a vapor-saturated gas stream, in which method a gas stream containing a) at least one gaseous contaminant which is soluble in a scrubbing liquid, with or without salt for... | 09/04/2001 |
| 6248156 | Particulate capture system and method of use A particulate capture system has an air circulating chamber that separates a first portion of particulates trapped within an air stream. The particulate capture system also has a water injection chamber that separates a second portion of particulates trap... | 06/19/2001 |
| 6197094 | Device for improving the quality of indoor air A device for improving the quality of indoor air comprising a casing (2) with an air inlet (3) and an air outlet (5), a member (7) arranged to cause air in a room, in which the casing is placed, to flow in through the inlet and inside the casing to the ou... | 03/06/2001 |
| 6197091 | Ozone purification process An ozone-oxygen gas stream produced by passing oxygen into an ozone generator is introduced into a membrane separation unit containing an ozone-permeable membrane. Ozone-enriched gas passes through the membrane and is recovered or it contacts a liquid or ... | 03/06/2001 |
| 6190629 | Organic acid scrubber and methods A scrubber assembly for removal of water soluble and/or alkaline gases from an exhaust stream uses a scrubber mixture contained within at least one scrubber vessel. Preferably the scrubber mixture include a liquid phase including an aqueous acid solution,... | 02/20/2001 |
| 6174349 | Continuous effluent gas scrubber system and method A method and apparatus is provided which continuously filters scrubbed gases prior to emission to the atmosphere. In particular, the method and apparatus can continuously scrub the effluent stream from a chemical vapor deposition process, such as the proc... | 01/16/2001 |
| 6139603 | Process for recovering oxygen Method for recovering oxygen from a medium containing O2 using polynitrogenated compounds that have five coordinating functions which are capable of binding a metal atom, particularly a cobalt atom. In the recovery method, oxygen is first absor... | 10/31/2000 |
| 6015477 | Point-of-use ammonia purification for electronic component manufacture Highly purified ammonia for use in processes for the production of high-precision electronic components is prepared on-site by drawing ammonia vapor from a liquid ammonia reservoir, passing the vapor through a filter capable of filtering out particles of ... | 01/18/2000 |
| 5961695 | Method for treating silane-containing gas A silane-containing gas is treated by contacting it with a liquid containing silanes or disilanes which are higher boiling than the silanes in the silane-containing gas, thereby easily removing or reducing the amount of silanes in the gas and enabling the... | 10/05/1999 |
| 5858065 | 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 providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the ... | 01/12/1999 |
| 5846450 | Vapor absorbent compositions comprising potassium formate An absorbent for use in absorption refrigeration systems, air conditioning systems, heat pumps or dehumidifiers comprising a solution of potassium formate. The absorbent is relatively non-toxic and relatively non-corrosive towards metals. The absorbent is... | 12/08/1998 |
| 5743944 | Fluid clathrate system for continuous removal of heavy noble gases from mixtures of lighter gases An apparatus and method for separation of heavy noble gas in a gas volume. An apparatus and method have been devised which includes a reservoir containing an oil exhibiting a clathrate effect for heavy noble gases with a reservoir input port and the reser... | 04/28/1998 |
| 5676736 | Process for introducing a filling gas into an enclosure and installation for employing same The process for introducing a filling gas into an enclosure initially containing a holding gas includes a step of introducing the filling gas into the enclosure as well as a step of extracting a specific gas initially contained in the filling gas or the h... | 10/14/1997 |
| 5656151 | Intermittent water washing to remove salts A process for determining if intermittent water injection is the best way to remove deposits such as salts from refinery process streams. A water vapor pressure, P1, at stream conditions and a water vapor pressure, Ps, at saturation conditions in the stre... | 08/12/1997 |
| 5656152 | Water washing to remove salts A continuous water washing process for removing salts from refinery process streams is disclosed. The salt and salt precursor content of a process stream is determined, and iterative calculations made to ensure an aqueous phase forms downstream of the wat... | 08/12/1997 |
| 5624577 | Disposal of oil spill cleanup collections Oil and water continuously collected during an oil spill skimming operation s initially heated for flow through a separator wherein water is separated and discharged into the sea to reduce the water content of a heated oil and water solution fed to a combu... | 04/29/1997 |
| 5588986 | Mass or energy transfer process using fluidized bed A method for the design and performance of a process such as scrubbing, stripping, heat transfer from one stream to another, and removal of particulate constituents from a gas stream. The method includes using given values for various system parameters an... | 12/31/1996 |
| 5582807 | Method and apparatus for removing particulate and gaseous pollutants from a gas stream An apparatus and method for removing particulate and gaseous pollutants from flue gas. The flue gas enters a presaturation section and is treated with a coarse spray of solution recovered from the system. The saturated gas enters a primary contacting sect... | 12/10/1996 |
| 5551972 | Absorption process without external solvent An absorption process for separating a feed gas stream having components with a spectrum of volatilities including volatile (light) components, intermediate volatility components, and least volatile (heavy) components. The disclosed process includes the s... | 09/03/1996 |
| 5538535 | Membrane process for treatment of chlorine-containing gas streams A membrane process for separating chlorine from chlorine-containing gas streams is disclosed. The process employs a permselective membrane that is selective to chlorine and is stable in the long-term presence of chlorine. The process can be used to treat ... | 07/23/1996 |
| 5534157 | Polyether polyamino methylene phosphonates for high pH scale control A method for inhibiting the formation, deposition, and adherency of scale-forming salts, including calcium sulfite, in process waters. The method is particularly suited for use in pulp mill lime kiln flue gas scrubber systems and multi-effect evaporators.... | 07/09/1996 |
| 5478449 | Method and apparatus for processing waste gas Disclosed is an improved waste gas processing method and apparatus using reduced water to contact waste gas, thereby removing noxious substances therefrom or turning it into nontoxic gas. Also, inactivation of acid effect is advantageously caused, and hen... | 12/26/1995 |
| 5462583 | Absorption process without external solvent An absorption process for separating a feed gas stream having components with a spectrum of volatilities including volatile (light) components, intermediate volatility components, and least volatile (heavy) components. The disclosed process includes the s... | 10/31/1995 |
| 5387277 | Process for the recovery of an acid gas from a gaseous stream containing acid gas A process for removing a water-soluble acid gas from a gaseous stream containing normally gaseous hydrocarbon compounds, hydrogen and the acid gas to produce an aqueous solution containing the dissolved acid gas and having a very low level of normally gas... | 02/07/1995 |
| 5096469 | Adsorptive gas separator with inertial energy exchange Pressure swing adsorption separation of a gas mixture is performed in first and second working spaces, with each working space having a flow path contacting adsorbent beds and variable displacement chambers. The volumes of the first and second working spa... | 03/17/1992 |
| 5064450 | Gas absorber method and apparatus A gas absorber for removing at least one gaseous component from a flowing gas stream by contacting the gas stream with a lean liquid stream to absorb at least a portion of the gaseous component to produce a rich liquid stream comprising the gaseous compon... | 11/12/1991 |
| 4917716 | Process for purifying a gaseous mixture A process is disclosed for the purification of a gaseous mixture, for example, consisting essentially of hydrogen and containing impurities, e.g., carbon monoxide, methane and argon. The gaseous mixture is scrubbed with liquid nitrogen in a scrubbing colu... | 04/17/1990 |
| 4902309 | Improved method for the ignition and combustion of particulates in diesel exhaust gases Apparatus and process for removing particulates from a flow of exhaust gas exhausted from a diesel engine and trapped in a filter including a compressor which produces dry compressed air and transports it into at least one oxygen saturation container prov... | 02/20/1990 |
