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7625537 |
Integrated dry and wet flue gas cleaning process and system
A process and system for removing sulfur oxide, other gases, and particulate from a flue gas. The process includes treating flue gas with a slurry formed from water, an alkaline reagent, and the...
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7617934 |
Alkyl iodide storage container and method for purification of alkyl iodide
A storage container for alkyl iodide comprising a stabilizing material for an alkyl iodide being disposed inside the container so as to contact an alkyl iodide liquid and an alkyl iodide gas is...
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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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7541011 |
Phase transitional absorption method
The present invention is directed to an improved method and system for separating and purifying gas using gas-liquid absorption. According to this invention, the method is carried out in an...
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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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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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7501104 |
Apparatus and method for treating discharge gas
A discharge gas treatment apparatus and method which lower treatment cost and which attain efficient removal of mercury contained in a discharge gas are provided. The discharge gas treatment...
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7498009 |
Controlled spectrum ultraviolet radiation pollution control process
A method for reducing or substantially eliminating oxides of nitrogen from an effluent gas stream, that includes providing a source of ultraviolet radiation with a precise wavelength, adding...
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7488461 |
Exhaust gas treatment system and exhaust gas treatment method
An exhaust gas treatment system is provided that can sufficiently remove pollutants such as SO 3 contained in combustion exhaust gas at low cost. In the exhaust gas treatment system for removing...
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7476374 |
Catalytic destruction of halogenated hydrocarbons
The destruction of chlorinated hydrocarbons, such as carbon tetrachloride, over lanthanide-based solid catalysts in the presence of steam has been investigated between 200 and 350° C. Ln 2 O 3 /AL...
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7438876 |
Multi-stage heat absorbing reactor and process for SCR of NOx and for oxidation of elemental mercury
A selective catalytic reduction apparatus has at least first and last catalyst layers in series for reducing nitrogen oxides in a flue gas, at least one interstage heat exchanger located after the...
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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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7381387 |
Mercury reduction system and method in combustion flue gas using coal blending
A method to reduce mercury in gas emissions from the combustion of low rank coal in a combustion system including: combusting coal having a low chlorine content in the combustion system, wherein...
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7371357 |
Process for removal of pollutants
A process for the removal of pollutants from a combustion process and, more particularly, a process for removing pollutants such as carbon dioxide, mercury, sulphur dioxide, nitrogen compounds and...
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7323152 |
Catalyst or sorbent beds
A fixed bed containing a particulate catalyst or sorbent material ( 10 ) subject to operation at high temperature having a shaped boundary member ( 16 ) inclined to the direction of fluid flow...
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7323583 |
Catalysts for the production of methylchlorosilanes using zinc oxide promoters
The present invention provides a catalyst that may be used to facilitate the formation of dimethylchlorosilanes. A catalyst in which copper oxide and zinc oxide are in intimate contact and form...
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7303735 |
Process for the removal of contaminants from gas streams
The present invention provides for a method and apparatus for removing contaminants from a gas stream such as a flue gas stream from an industrial process. The process utilizes a prescrubber to...
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7261868 |
Process and apparatus for the decomposition of fluorine compounds
Fluorine compounds such as C 2 F 6 , CF 4 , CHF 3 , SF 6 and NF 3 , are made to contact with a fluorine compound decomposition catalyst and a catalyst for the decomposition of at least one of CO,...
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7255842 |
Multi-component removal in flue gas by aqua ammonia
A new method for the removal of environmental compounds from gaseous streams, in particular, flue gas streams. The new method involves first oxidizing some or all of the acid anhydrides contained...
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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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7220396 |
Processes for treating halogen-containing gases
There are disclosed various processes, apparatuses and systems for treating a halogen-containing gas such as F 2 that involve generating a plasma in order to reduce chemically the...
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7156027 |
Method for producing soil, soil-processing unit, method for processing and unit for processing
An object to be treated such as soil, burned fly ashes, or the like containing organic halides is introduced to a hermetically sealable thermal decomposition furnace 310 and heated under reduced...
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7157064 |
Method for treatment of flue gas cleaning products
The invention relates to a method of treating a halogen containing solid or semi solid waste material from a flue gas cleaning process, wherein the amount of alkaline compounds is sufficient to...
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7138096 |
Method for decomposition oxidation of gaseous pollutants
An apparatus is 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 and flame...
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7128890 |
Purification of hydrochloric acid obtained as by-product in the synthesis of methanesulfonic acid
Process for purifying the hydrochloric acid obtained as by-product in the synthesis of MSA, characterized in that the gaseous flow of hydrogen chloride evacuated from the top of the synthesis...
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7060235 |
Method for processing perfluorocompounds exhaust
This invention provides a method for processing perfluorocompounds exhaust, that employs thermal energy produced by the reactions occurred in a plasma reactor to convert liquid water into steam....
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7060234 |
Process and apparatus for abatement of by products generated from deposition processes and cleaning of deposition chambers
Method and apparatus for abating F 2 from byproducts generated during cleaning of a processing chamber. F 2 abatement is efficiently performed by directly injecting H 2 in line with a foreline...
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7056487 |
Gas cleaning system and method
A gas cleaning system for removing at least a portion of contaminants, such as halides, sulfur, particulates, mercury, and others, from a synthesis gas (syngas). The gas cleaning system may include...
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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
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7022298 |
Exhaust apparatus for process apparatus and method of removing impurity gas
An exhaust apparatus for a process apparatus which processes an object using a process gas includes an exhaust pipe to be connected to an exhaust port of the process apparatus, and a trap mechanism...
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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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7005117 |
Method for removing harmful components in an exhaust gas
A method of removing harmful components of a perfluorocarbon gas or a perfluorocompound including the step of mixing at least one of a hydrocarbon gas and NH 3 gas with an exhaust gas containing a...
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6969500 |
Method for separating titanium tetrachloride
The invention relates to a method for separating titanium tetrachloride and the hydrolyzed reaction products of titanium tetrachloride from the exhaust gases generated during the chlorination of...
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6960552 |
Decompositionally treating agent and decompositionally treating method for fluorocarbons
There are disclosed a decompositionally treating agent for fluorocarbons which comprises an aluminum compound and a lanthanoid compound as effective ingredients; a decompositionally treating agent...
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6953557 |
Process and apparatus for treating semiconductor production exhaust gases
A process and an apparatus for treating exhaust gases, comprising an aeration stirring tank ( 5 ) employing an aqueous alkaline liquid, and, as a posterior stage, a gas-liquid contact device ( 7 )...
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6924408 |
Method for reducing polychlorinated dibenzodioxins and -furans in exhaust gas
In a method for reducing the content of polychlorinated dibenzodioxins and -furans in the exhaust gas of chemical high temperature processes handling process materials, amides or organic oxides are...
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6905663 |
Apparatus and process for the abatement of semiconductor manufacturing effluents containing fluorine gas
Apparatus and process for the abatement of fluorine and fluorine-containing compounds from gases containing same, such as effluent gas streams from semiconductor manufacturing operations, wherein a...
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6890508 |
Preparation of largely HBr-free HCI gas and largely HBr-free aqueous HCI solution
The present invention relates to a process for preparing largely HBr-free HCl gas and largely HBr-free aqueous HCl solution, which comprises the following steps:
a) providing HBr-containing HCl...
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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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6884402 |
Catalyst for purification of exhaust gases, production process therefor, and process for purification of exhaust gases
The present invention provides: a catalyst for purification of exhaust gases which catalyst is excellent as a denitrification catalyst which has still more excellent ability to remove nitrogen...
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6869579 |
Process for treating exhaust gas
A process for treating and recovering CVD exhaust gas is provided, which can reduce periodical maintenance by converting the raw gas employed and the intermediate products contained in the CVD...
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6858194 |
Method for reducing elementary halogen in a gaseous effluent
Disclosed are a method for reducing the elementary halogen contained in a gaseous effluent from a combustion furnace by bringing the effluent into contact with hydrazine, and a device or an...
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6855302 |
Method for emission control of dioxin and/or furan waste gas pollutants in a cement clinker production line
In order to provide a comparatively simple and cost-effective method for cement clinker production lines where especially raw materials and/or fuel/secondary fuel containing chlorine compounds and...
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6815573 |
Method of decomposing halogenated hydrocarbon gas
A method and an apparatus for decomposing halogenated hydrocarbon gas economically and stably without relying on any special treatment and without generating dioxins. A catalyst to decompose...
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6770254 |
Purification of group IVb metal halides
This invention relates to an improved process for removing trace levels of Group IVb contaminants from a Group IVb metal tetrahalide of and particularly to a process for removing zirconium...
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6764670 |
Removal of thiothionylfluoride from sulfur tetrafluoride
A process for removing thiothionylfluoride from a composition containing sulfur tetrafluoride and thiothionylfluoride includes contacting the composition with a high surface area material, such as...
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6759564 |
Hydrate-based decontamination of toxic gases
Areas in which toxic material has been released, particularly in gaseous form but also in liquid form, are decontaminated by forming gas hydrate of the toxic agent. Smaller-molecule toxic agents...
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6759565 |
Method for decomposing chlorine-containing organic compound contained in exhaust gas and catalyst for use in the method
The invention is to provide (1) a method for decomposing chlorine containing organic compounds (DXNs) contained in an exhaust gas in which method a high decomposition ratio of the DXNs can be...
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