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8182775 |
Dry-scrubbing media compositions and methods of production and use
Dry-scrubbing media compositions, methods of preparing same, and methods of use are provided. The compositions contain activated alumina and potassium carbonate. Optionally, activated carbon and...
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8007688 |
Process for decontaminating syngas
Disclosed herein is an apparatus and methods for decontaminating syngas generated in a fluidized-bed gasifier wherein metal contaminants, inter alia, alkali metals, halogens, particulates, and...
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7976808 |
Method for removing halogen series gas and agent for removing halogen series gas
To provide an agent for removing a halogen series gas and a method for removing a halogen series gas which is excellent in a removing ability of removing the present halogen series gas in a low...
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7972582 |
Method and apparatus for treating exhaust gas
An apparatus for treating an exhaust gas that includes a pre-treatment section that removes a powdery component, a water-soluble component or a hydrolytic component from the exhaust gas. The...
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7971540 |
Control of combustion system emissions
A process for capturing undesirable combustion products produced in a high temperature combustion system. Very finely sized particles of alkaline earth carbonates or hydroxides, with or without...
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7955578 |
Method and apparatus for treating gas containing flourine-containing compounds
To provide a method and apparatus for treating a waste gas containing fluorine-containing compounds, according to which PFCs can be decomposed efficiently even at low temperature, and moreover...
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7931737 |
Systems and methods for restricting scale in gas scrubbers and related components
Systems, methods and apparatus for restricting scale build-up in gas scrubbers and piping are disclosed. The scrubbers and/or pipes may have a coating disposed on internal surfaces thereof. The...
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7883568 |
Separation of light gases from halogens
A process is provided for separating one or more light gases from bromine or chlorine using one or more physical separations and contact with a chemical scrubber to recover additional halogen. In...
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7842125 |
Process for refining nitrogen trifluoride gas using alkali earth metal exchanged zeolite
Disclosed herein are a process for the refinement of nitrogen trifluoride gas and an adsorbent used therein. A nitrogen trifluoride (NF3) gas including carbon tetrafluoride (CF4) as an impurity is...
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7824637 |
Apparatus for treating a gas stream
Apparatus for treating a gas stream comprises a plurality of cylindrical proton conducting membranes. The gas stream is conveyed through the bore of each cylindrical membrane, and a...
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7799300 |
Method and apparatus 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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7790130 |
Wide mesoporous alumina composites having trimodal pore structure
Wide mesoporous alumina composites are produced by an “in situ reaction” route comprising agglomeration of an alumina powder that is capable of rehydration together with a second reactive pow...
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7790129 |
Set of processes for removing impurities from a silcon production facility
Two low cost processes for removing boron, phosphorus, carbon and titanium during the process of converting metallurgical grade silicon to electronic grade silicon are described. A first process...
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7790126 |
Method for purifying waste gases of a glass melting process, particularly for glasses for LCD display
The invention is directed to a method for cleaning exhaust gases of a glass melting process. The raw material for production of the glass is charged to the glass furnace and molten glass is removed...
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7776302 |
Fluorine extraction systems and associated processes
Fluorine extraction systems and associated processes are described herein. In one embodiment, a fluorine extraction process can include loading a mixture containing a uranium fluoride (UxFy, where...
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7758837 |
Scavengers for removal of acid gases from fluid streams
A composite sorbent is formed which is the reaction product of a solid alkali metal carbonate, rehydratable alumina and water or an aqueous solution of a metal salt. The reaction between the...
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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...
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7731924 |
Group of at least two gas-flow reactors supplied with chemical neutralization and/or sorption agent
A group of at least two gas-flow reactors (21, 22, 2′2, . . . , 2n, 2′n) preferably with an ascending gas flow (3), are supplied in parallel with gas and with a chemical neutralization and/or sor...
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7708964 |
Oil shale derived pollutant control materials and methods and apparatuses for producing and utilizing the same
Pollution control substances may be formed from the combustion of oil shale, which may produce a kerogen-based pyrolysis gas and shale sorbent, each of which may be used to reduce, absorb, or...
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7691351 |
Method for treatment of a gas stream containing silicon tetrafluoride and hydrogen chloride
The present invention is directed to a method for treatment of a gas stream comprising silicon tetrafluoride and hydrogen chloride. For example, the present invention is directed to a method for...
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7666379 |
Process and apparatus for removing Bronsted acid impurities in binary halides
A process and apparatus is provided for the purification of binary halide fluid. The process and apparatus purifies the binary halide fluid by selectively removing Bronsted acid impurities and/or...
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7666374 |
Method for cleaning exhaust gases produced by a sintering process for ores and/or other metal-containing materials in metal production
The invention relates to a process for cleaning exhaust gases produced by a sintering process of metal-containing waste. The sintering exhaust gas includes one or more harmful substances which are...
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7637986 |
Process for refining nitrogen trifluoride gas using alkali earth metal exchanged and impregnated zeolite
Disclosed herein are a process for the refinement of nitrogen trifluoride gas and an adsorbent therefor. A nitrogen trifluoride (NF3) gas including carbon tetrafluoride (CF4) as an impurity is...
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7611564 |
Recovery of n-propyl bromide emissions
A process for recovery of n-propyl bromide solvent includes mixing a solvent laden vapor stream with an additive and reclaiming the solvent using a carbon adsorption system. A carbon adsorption...
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7597744 |
Use of molecular sieves for the removal of HFC-23 from fluorocarbon products
Use of molecular sieves to reduce the amount of trifluoromethane (HFC-23) present in a mixture of HFC-23 with other materials, particularly from mixtures containing HFC-23 and trifluoroiodomethane...
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7595033 |
Regeneration of nt-scr catalysts
A process and device for purifying flue gases in refuse incineration plants during regeneration of a catalyst which serves for reducing nitrogen oxides, by, in a first step, removing acidic...
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7556787 |
Method and apparatus for treating exhaust gases containing fluorine-containing compounds
A method for treating exhaust gases containing fluorine-containing compounds which comprises the steps of bringing an exhaust gas containing fluorine-containing compounds into contact with a metal...
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7524470 |
Reduced liquid discharge in wet flue gas desulfurization
One aspect of the invention relates to a method for removing contaminants from a flue gas stream (22). The method includes: removing fly ash from a flue gas stream (22) utilizing a particle...
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7514052 |
Method for removal of mercury emissions from coal combustion
A method to reduce emissions in flue gas due to combustion of coal in a combustion unit including the steps of: combusting coal in a primary combustion zone of the combustion unit; releasing...
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7514053 |
Method for removing sulfur dioxide, mercury, and nitrogen oxides from a gas stream
Methods for scrubbing gas streams to remove acid gases including sulfur dioxide, mercury-containing substances, and/or nitrogen oxides from the gas stream. The gas stream is contacted with a...
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7470413 |
Fluorine removal by ion exchange
A method for removing fluorine gas from a selected environment comprises contacting the fluorine gas with water to generate a solution of hydrofluoric acid and contacting the solution of...
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7431904 |
Catalyst support material, catalysts prepared therefrom and process for the treatment of a flue gas
The present invention relates to a catalyst support material and catalysts made therefrom having improved resistance towards erosion. The catalyst support contains at least 20% by weight of TiO2...
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7384615 |
Method oil shale pollutant sorption/NOx reburning multi-pollutant control
A method of decreasing pollutants produced in a combustion process. The method comprises combusting coal in a combustion chamber to produce at least one pollutant selected from the group consisting...
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7377959 |
Process and apparatus for decomposition treatment of volatile chlorinated organic compound
A large amount of a medium containing a volatile chlorinated organic compound (VOC) with a low concentration is passed through an adsorber filled with an adsorbent which adsorb and desorb the VOC...
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7347980 |
Process for treating fluorine compound-containing gas
A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and...
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7326279 |
Method for removing harmful substance in vent gas
A method for removing harmful substances in a vent gas containing a halogen or halogen compound gas remaining in the pipeline of a cylinder cabinet, which comprises contacting the vent gas with a...
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7306775 |
Method for removing halogen series gas
A method for removing a halogen series gas, which comprises contacting a gas containing a halogen series gas forming at least one kind selected from the group consisting of HF, HCl, HBr and HI by...
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H002198 |
Multi-stage pyrolysis systems for treating chlorine contaminated wastes
A method of decontaminating solids contaminated with chlorinated hydrocarbons includes a first step of heating the contaminated solids at a temperature high enough to volatize chlorine contaminates...
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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...
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7056483 |
Method for converting halogens and organic compounds to inorganic substances
A bed of calcium oxide and/or barium oxide in particulate form is continuously moved through a contact reaction zone such that it enters into countercurrent reaction with the feedstock and the...
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7052663 |
Combustion catalysts and processes for removing organic compounds
A process for removing an organic compound or compounds which is/are a chlorinated hydrocarbon or hydrocarbon by catalytic combustion, the process including the step of contacting the organic...
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7041264 |
Process for purifying octafluoropropane
A process for purifying octafluoropropane according to the present invention includes the step of contacting a crude octafluoropropane containing impurities with an impurity decomposing agent under...
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7022296 |
Method for treating flue gas
A multiple-field precipitator, flue-gas treating device, in accordance with the principles of the invention, includes a first section having a dual-function, sensible-cooling heat...
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7014824 |
Method for purifying process waste gases
The present invention relates to a method for purifying process waste gases by introducing them into a waste gas purification system that includes a reaction chamber and by post-treating the...
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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...
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6921519 |
Decomposition of fluorine containing compounds
A process for the decomposition and removal of one or more fluorine containing compounds from a first gaseous mixture comprising the one or more fluorine containing compounds and water vapour,...
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6905664 |
Method for removal of PCDD and PCDF from combustion gases
A method for the removal of micro-pollutants, in particular PCDD and PCDF, from the combustion gases resulting from the incineration of chlorinated organic wastes (ICG), the gases containing acidic...
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6896866 |
Method for purification of tungsten hexafluoride
A method for purifying tungsten hexafluoride of high purity, capable of producing tungsten hexafluoride of higher purity than that of the related art, readily and at a low cost. A method for...
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6888040 |
Method and apparatus for abatement of reaction products from a vacuum processing chamber
An exemplary method and apparatus for abating reaction products from a vacuum processing chamber includes a reaction chamber in fluid communication with the vacuum processing chamber, a coil...
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6884401 |
Method for removing volatile components from a high viscosity liquid by using rotation pack bed
A high viscosity liquid is fed into a rotation pack bed at a position with a distance far enough from a rotation axis, creating a centrifugal force exerted on the high viscosity liquid overwhelming...
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