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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...
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6638488 |
Method and apparatus for removing organic hazardous substances using selected solvents
Method and apparatus for isolating, decomposing, and fixing the organic hazardous substances in a stable manner using chemical techniques and isolating and decomposing the organic hazardous...
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6632368 |
Process for removing fluorides from fluids
A new method for removing HF and related organic fluorides from fluid streams in which the fluoride species exist as impurities and, in particular, from hydrocarbon fluid streams containing no more...
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6630421 |
Reactive agent and process for decomposing fluorine compounds and use thereof
A reactive agent for decomposing fluorine compounds comprising alumina and an alkaline earth metal compound; a process for decomposing fluorine compounds, comprising contacting the reactive agent...
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6602480 |
Method for treating waste gas containing fluorochemical
A method for decomposing a fluorine-containing compound by contacting an exhaust gas 1 containing a fluorine-containing compound, such as C 2 F 6 , with aluminum oxide 3 , such as γ-alumina,...
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6589494 |
Process for eliminating halogen-containing compounds contained in a gas or liquid using an adsorbent composition based on at least one metallic element
The present invention provides a process for eliminating halogen-containing compounds contained in a gas or a liquid, characterized in that the gas or liquid is brought into contact with a...
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6589495 |
Process for reducing the levels of halogenated hydrocarbons
Catalyst body for breaking down halogenated hydrocarbons, in particular dioxins and/or furans, having an active material which comprises titanium dioxide, carbon and at least one active component...
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6570049 |
Incineration system for refuse-derived fuels, coal and petroleum coke, or chlorinated hydrocarbons
Incineration systems, particularly those using municipal garbage and waste, refuse-derived fuels, coal and petroleum coke, and/or chlorinated hydrocarbons are operated without the release of toxic...
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6565820 |
Low temperature oxidation using support molten salt catalysts
Molten salt reactions are performed by supporting the molten salt on a particulate support and forming a fluidized bed of the supported salt particles. The method is particularly suitable for...
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6558641 |
Absorbents
Shaped absorbent units suitable for use as chloride absorbents comprising a calcined intimate mixture of an alkali or alkaline earth, zinc and aluminium components having an alkali or alkaline...
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6558642 |
Method of adsorbing metals and organic compounds from vaporous streams
A method and adsorption powder useful for the removal of mercury and other metals, as well as furans, dioxins and other organic compounds from high temperature and high moisture gaseous streams....
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6551566 |
Hydrodehalogenation process using a catalyst containing nickel
A gas stream containing at least about 90% (vol.) hydrogen and at least one halogen-containing compound is contacted with a nickel hydrogenation catalyst. When the gas stream contacts the...
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6514471 |
Removing fluorine from semiconductor processing exhaust gas
Fluorine is removed from exhaust gas coming from a cleaning, etching or CVD operation in semiconductor fabrication by passing the gas through a fixed bed of activated alumina having a high total...
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6511641 |
Method for abatement of gaseous pollutants
An apparatus and method are provided for treating pollutants in a gaseous stream. The apparatus comprises tubular inlets for mixing a gas stream with other oxidative and inert gases for mixture...
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6509511 |
Process for the conversion of perfluoroalkanes, a catalyst for use therein and a method for its preparation
A process for the decomposition of perfluoroalkanes comprises contacting a gaseous stream comprising the perfluoroalkanes with a catalyst comprising alumina. The alumina is prepared from one or...
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6508994 |
Method and apparatus for cleaning flue gases
A method and an apparatus for cleaning flue gases with particulate slaked lime are described. In the method, burnt lime is dry-slaked with water to a moisture content of at least 5% by weight, and...
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6506352 |
Method for removing substances from gases
The present invention concerns a method and an apparatus for removing substances from gases discharged from gas phase reactors. In particular, the invention provides a method for removing...
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6436868 |
Composite catalyst composition for inhibiting generation of dioxin
The present invention relates to a process for treating a dioxin-containing exhaust gas which can inhibit the generation of dioxin occurring either in the course of cooling of the exhaust gas...
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6432374 |
Solid chloride absorbent
The invention has an object to provide a solid chloride absorbent which can efficiently absorb inorganic chlorides such as hydrogen chloride flowing out from a process in which a heavy naphtha and...
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6426443 |
Catalytic process for the decomposition of perfluoroalkanes
A process and composition for transforming perfluoroalkanes in the presence of an oxidizing agent and water at temperatures between about 400 to 1,000° C. Aluminum oxide is the primary agent for...
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6416724 |
Method for cleaning of combustion gas containing impurities
A method is provided for cleaning a combustion exhaust gas containing impurities, such as sulfur oxides and hydrochloric acid, with an additive, such as calcium hydroxide, in a reactor. The...
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6416726 |
Method for decomposing nitrogen fluoride or sulfur fluoride and decomposing reagent used therefor
A method for decomposing nitrogen fluoride or sulfur fluoride, comprising contacting gaseous nitrogen fluoride or sulfur fluoride with a solid reagent comprising elemental carbon, one or more of...
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6403047 |
Treatment of gas mixtures
A method for treating a gas stream containing one or more perfluoro-organic compounds to remove the perfluoro-organic compound(s) therefrom, which comprises bringing the gas stream in to contact...
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6379638 |
Method for removing harmful components from a gaseous mixture
Compounds having the formula A 2 B 3 O 6±d wherein A is an alkaline-earth metal, an alkaline metal, a lanthanide, or a solid solution thereof, B is a transition metal, an element of group III, or...
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6375912 |
Electrochemical abatement of perfluorinated compounds
The invention provides an improved point-of-use PFC/HFC abatement process involving an electrochemical route to abatement. PFCs/HFCs are treated with a relatively strong chemical reducing agent,...
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6375911 |
Method and device for treating exhaust gas
A process and an apparatus for treating an exhaust gas, in which a raw gas and high-boiling intermediate products contained in the exhaust gas let out from a CVD system employing a...
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6352676 |
Abatement of F2 using small particle fluidized bed
A process for destroying fluorine in a gas containing such fluorine by contacting the gas with a fluidized bed of metal particles capable of reacting with such fluorine wherein the metal particles...
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6338312 |
Integrated ion implant scrubber system
An ion implantation process system, including an ion implanter apparatus for carrying out an ion implantation process. A supply of source gas for the ion implantation process is arranged to flow to...
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6309618 |
Method for treating exhaust gas containing fluorine-containing interhalogen compound, and treating agent and treating apparatus
A treating method comprising contacting a fluorine-containing interhalogen compound first with a treating agent for the fluorine component and then with a treating agent for the halogen component,...
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6294709 |
Process for decomposing fluorocarbons reagent and apparatus used therefor
Fluorocarbons including perfluorocarbons and hydrofluorocarbons are highly efficiently decomposed by contacting a gaseous fluorocarbon with a reagent comprising carbon and an alkaline earth metal...
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6290921 |
Method and apparatus for binding pollutants in flue gas
A method of binding pollutants, such as sulfur dioxide, hydrochloric acid and/or hydrofluoric acid, in flue gas in one or more combustion plants. The method includes the steps of (a) combusting...
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6284211 |
Exhaust gas cleaner and method for removing nitrogen oxides
Nitrogen oxides are removed from an exhaust gas containing nitrogen oxides and oxygen in a proportion larger than its stoichiometric proportion relative to unburned components in the exhaust gas,...
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6277342 |
Storage and safe delivery of hazardous specialty gases by acid/base reactions with ionic polymers
A method for delivering a gas having a proton affinity of less than 866 kJ/mol is disclosed. A support including at least one polymer sufficiently acidic to protonate the gas is contacted with the...
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6254846 |
Process for purifying fumes and for manufacturing an aqueous sodium chloride solution
Process for purifying fumes originating from the incineration of household waste and for manufacturing an aqueous sodium chloride solution, according to which the fumes (3) are subjected to a...
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6238636 |
Process and systems for purification of boron trichloride
Processes are disclosed for increasing the condensed phase production of BCl 3 comprising less than about 10 ppm phosgene, less than 10 ppm chlorine, and less than 10 ppm HCl. In one embodiment...
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6238635 |
Catalytic process for the decomposition of organic pollutants
Toxic components in a gaseous effluent containing toxic organic, chlorinated and non-chlorinated compounds are degraded by a process, comprising: contacting the gaseous effluent containing toxic...
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6224843 |
Carbon dioxide purification in ethylene glycol plants
A process is provided for production of substantially pure carbon dioxide from a CO 2 off-gas stream from an ethylene glycol plant. Water is condensed from an off-gas stream which contains...
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6207120 |
Catalytic vent gas treatment system for abatement of volatile chemical emissions
An integrated process for vent gas treatment for the abatement of volatile emissions is disclosed. The vent gas comprises dioxygen, carbon monoxide, hydrocarbons and other organic compounds...
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6180077 |
Process for purification of SiO2 granulate
A process for the purification of SiO 2 granulate is provided, where the SiO 2 granulate is supplied into a reaction zone, heated therein and exposed to a treatment gas which comprises a...
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6171567 |
Process for the purification of a gas containing hydrogen chloride
Solid powdered reactive composition for the purification of a gas containing hydrogen chloride, the said reactive composition comprising more than 98% by weight of sodium bicarbonate and less than...
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6165434 |
Purification of diborane
BF 3 , CO 2 or both are removed from a mixture containing these gases with B 2 H 6 by contacting the mixture with an inorganic hydroxide such as LiOH. B 2 H 6 is synthesized by contacting BF 3...
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6136281 |
Method to control mercury emissions from exhaust gases
The present invention relates to a method to catalyze the oxidation of Hg(0) in a flue gas stream prior to standard emissions control equipment. The oxidized mercury has been found to be more...
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6120747 |
Catalyst for removing organic halogen compounds, preparation method therefor and method for removing organic halogen compounds
The present invention provides a catalyst having excellent capability of removing organic halogen compounds such as dioxins, a method for preparing the catalyst, and a method for removing organic...
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6110436 |
Process for removing ozone-depleting and/or climate-active fluorinated compounds from a gas stream and application of the process
A process is provided for removing fluorinated compounds, such as perfluorinated or partially fluorinated C1 to C4 hydrocarbons, NF 3 and SF 6 , out of a gas by passing this gas through gamma...
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6106790 |
Abatement of NF.sub.3 using small particle fluidized bed
A process for destroying NF 3 in a gas containing NF 3 by contacting the gas with a fluidized bed of metal particles capable of reacting with NF 3 wherein the metal particles have a particle...
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6103212 |
Method for making UHP tungsten hexafluoride
This invention is directed to a method for producing UHP tungsten hexafluoride by introducing an amount of crude tungsten hexafluoride to an evaporating process for separation into an amount of...
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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...
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6090355 |
Method and device for cleaning flue gases from furnaces
A method for scrubbing flue gases of furnaces includes subjecting the flue gases with addition of activated carbon particles to wet scrubbing in a wet scrubbing device. Activated carbon particles...
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6071488 |
Use of metal oxychlorides for removal of hydrogen chloride from mixed gases
A process for producing chlorine comprises the steps of oxidizing hydrogen chloride in the presence of a catalyst in an oxidation reactor, passing the product gas together with the catalyst removed...
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6060033 |
Process for removing HCl from hydrocarbon streams
The invention relates to a process for removing hydrogen halides from hydrocarbon-containing streams. More particularly, the invention relates to a process and an HCl sorbent for the removal of HCl...
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