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7628844 |
Filtration media for the removal of mercury from flue gas emissions
Filtration materials comprising heat-treated metal-doped precipitated silica or silica gel materials with sulfur-containing functional silane surface treatments are provided. Such materials exhibit...
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7615101 |
High energy dissociation for mercury control systems
An apparatus and method for controlling mercury emissions in the gas stream from a fuel fired system includes a chamber for creating dissociated halogen to be supplied to the gas stream, with or...
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7600479 |
Mercury reduction system and method in combustion flue gas using staging
A method to reduce mercury in gas emissions from the combustion of coal is disclosed. Mercury emissions can be reduced by staging combustion process and/or reducing boiler excess oxygen. Fly ash...
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7585353 |
Method for reducing heavy metals in flue gases
A method for reducing heavy metals, in particular in mercury, present in flue gases, includes the step of bringing the flue gases into contact with a particular class of sorbent material in the dry...
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7578869 |
Methods of manufacturing bentonite pollution control sorbents
Methods of manufacturing bentonite sorbents for removal of pollutants including mercury from gas streams, such as a flue gas stream from coal-fired utility plants are disclosed. The methods include...
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7572421 |
Mercury sorbents and methods of manufacture and use
Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. The methods...
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7556672 |
Regenerative process for removal of mercury and other heavy metals from gases containing H2 and/or CO
A method for removal of mercury from a gaseous stream containing the mercury, hydrogen and/or CO, and hydrogen sulfide and/or carbonyl sulfide in which a dispersed Cu-containing sorbent is...
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7544339 |
Method and apparatus for removing mercury from combustion exhaust gas
A method for reducing mercury emissions in combustion flue gas is provided. The method includes combusting coal such that a flue gas flow is created. The flue gas flow includes at least mercury and...
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7524471 |
Mercury emission control for coal-fired boilers
One embodiment of the present invention relates to a process for treating a flue gas stream ( 22 ) from a coal-fired boiler to reduce the amount of mercury contained therein. The process includes...
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7524472 |
Mercury removal from coal emissions using montmorillonite clay
Disclosed herein are methods, apparatus, and compositions for removing mercury gas from coal combustion emissions and the like. Disclosed herein is a gettering composition comprising an activated...
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7497172 |
Method to decrease emissions of nitrogen oxides and mercury through in-situ gasification of carbon/water slurries
In a method for removing NO x from the flue gas using a coal water slurry, other carbon containing fuel and water, or unburned carbon existing in the furnace itself due to continuing combustion,...
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7494632 |
Mercury sorbent delivery system for flue gas
The invention presents a device for the removal of elemental mercury from flue gas streams utilizing a layer of activated carbon particles contained within the filter fabric of a filter bag for use...
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7479263 |
Method for scavenging mercury
Disclosed herein is a method for removing mercury from a gas stream comprising contacting the gas stream with a getter composition comprising bromine, bromochloride, sulphur bromide, sulphur...
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7435286 |
Sorbents for the oxidation and removal of mercury
A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive...
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7419601 |
Nanomesh article and method of using the same for purifying fluids
Disclosed herein are articles for removing contaminants from a fluid, such as a liquid or gas, the article comprising carbon nanotubes, which comprise at least one molecule or cluster attached...
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7361209 |
Apparatus and process for preparing sorbents for mercury control at the point of use
A system for treating a contaminated gas stream is provided that includes a comminution device 204 operable to effect size reduction of a plurality of sorbent particles and form a plurality of...
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7314507 |
Apparatus and method for removing mercury vapor from a gas stream
A metallic filter effectively removes mercury vapor from gas streams. The filter captures the mercury which then can be released and collected as product. The metallic filter is a copper mesh...
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7300481 |
Method and device for cleaning filters for dust-laden waste gases
The invention relates to a method for cleaning filters for dust-laden waste gases, including several filter elements ( 2 ) which are arranged vertically in a filter housing ( 1 ) and which have an...
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7267710 |
Method of and apparatus for regenerating adsorbent
An apparatus for regenerating an adsorbent includes an electrolytic cell filled with an electrolyte and an electrode unit that includes a first electrode made from the adsorbent in which a...
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7249564 |
Method and apparatus for utilization of partially gasified coal for mercury removal
A method for capturing mercury in a flue gas formed by solid fuel combustion including: combusting coal, wherein mercury released during combustion is entrained in flue gas generated by the...
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7238223 |
Acoustical stimulation of vapor diffusion system and method
An apparatus for removing constituents from a fluid stream is provided. The apparatus includes a duct, a collection device, a sorbent injector, and an acoustic generator. The duct has a fluid...
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7141091 |
Method and apparatus for removing particulate and vapor phase contaminants from a gas stream
The present invention provides methods for removing particulate and a vapor phase contaminant from a gas stream including, in one embodiment, directing a gas stream comprising fly ash and a vapor...
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7048781 |
Chemically-impregnated silicate agents for mercury control
The present invention is directed to a contaminant removal agent comprising a polyvalent metal sulfide on the surface of an inert substrate. The substrate can be a layered silicate, such as...
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7048779 |
Method of removing mercury from exhaust gases of coal fired power plants and associated apparatus
A method of removing mercury from a coal fired power plant exhaust gas includes passing the exhaust gas through a bulk particle filter to remove coarse particles, introducing powdered activated...
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7033419 |
Method for high temperature mercury capture from gas streams
A process to facilitate mercury extraction from high temperature flue/fuel gas via the use of metal sorbents which capture mercury at ambient and high temperatures. The spent sorbents can be...
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6962617 |
Method of removing mercury from exhaust gases
Efficient removal of mercury from the exhaust gases of an industrial process or combustion process can be achieved using an adsorbent that can be regenerated by a simple and efficient method. The...
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6953494 |
Sorbents and methods for the removal of mercury from combustion gases
A method for removing mercury and mercury-containing compounds from a combustion gas in an exhaust gas system has the steps of providing a mercury sorbent; injecting the mercury sorbent into a...
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6843831 |
Process for the purification of flue gas
A process for the purification of flue gas, comprising the step of contacting flue gas with a carbonaceous material comprising a solid carbonaceous residue of synthetic rutile production from...
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6818043 |
Vapor-phase contaminant removal by injection of fine sorbent slurries
A method for efficiently removing vapor-phase contaminants from gas streams is described. A powdered adsorbent such as activated carbon is ground into a fine powder by wet grinding to form a...
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6770119 |
Mercury removal method and system
The present invention provides a mercury removal method which can effectively remove very small amounts of mercury components present in a gas during wet gas purification such as coal or heavy oil...
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6736883 |
Particulate separation system for mercury analysis
A particulate separation system for accurate measurement of vapor-phase mercury in a flue gas stream uses an inertial gas sampling filter in which the skin temperature of the filter element is...
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6712878 |
Method and apparatus for renewable mercury sorption
A method of removing trace contaminants, such as mercury, from a flue gas by passing the gas over a sorbent structure on which is coated a renewable layer of sorbent. The sorbent structure can be a...
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6638347 |
Carbon-based adsorption powder containing cupric chloride
A carbon-based, adsorption powder containing an effective amount of cupric chloride suitable for removing mercury from a high temperature, high moisture gas stream, wherein the effective amount of...
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6595147 |
Method for adsorbing contaminants from flue gas
A method and apparatus for controlling or removing mercury, mercury compounds and high molecular weight organics, if present, from a resource recovery exhaust stream by separately adding a...
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6589318 |
Adsorption powder for removing mercury from high temperature, high moisture gas streams
An adsorption powder for removing mercury and other metals, dioxins, furans and other organic compounds from metal- and organic compound-comtaminated soil and method therefor. The adsorption powder...
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6582497 |
Adsorption power for removing mercury from high temperature high moisture gas streams
There is disclosed an adsorption powder effective for capturing mercury from a high temperature, high moisture gas stream comprising: about 1-97% carbon; about 1-97% of alkaline material; about...
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6558454 |
Method for removal of vapor phase contaminants from a gas stream by in-situ activation of carbon-based sorbents
A process for removing vapor phase contaminants from a gas stream includes the step of adding a raw carbonaceous starting material into a gas stream having an activation temperature sufficient to...
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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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6533842 |
Adsorption powder for removing mercury from high temperature, high moisture gas streams
There is disclosed an adsorption powder effective for capturing mercury from a high temperature, high moisture gas stream comprising: about 1-97% carbon; about 1-97% calcium hydroxide; about 1-97%...
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6524371 |
Process for adsorption of mercury from gaseous streams
A process for removing mercury and organic compounds from gaseous stream using an adsorption powder, characterized as containing a carbon-based powder and an effective amount of cupric chloride,...
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6521021 |
Thief process for the removal of mercury from flue gas
A system and method for removing mercury from the flue gas of a coal-fired power plant is described. Mercury removal is by adsorption onto a thermally activated sorbent produced in-situ at the...
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6451094 |
Apparatus and method for removal of vapor phase contaminants from a gas stream by in-situ activation of carbon-based sorbents
A process for removing vapor phase contaminants from a gas stream includes the step of adding a raw carbonaceous starting material into a gas stream having an activation temperature sufficient to...
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6439138 |
Char for contaminant removal in resource recovery unit
A method and apparatus for controlling or removing mercury, mercury compounds and high molecular weight organics, if present, from a waste incineration apparatus exhaust stream by separately adding...
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6322613 |
Process for the recovery of mercury from a gaseous mixture
Adsorption of mercury on activated carbons derived from scrap tires enables the removal and recovery of mercury from combustion/incineration flue gas, with concurrent control of SO 2 and NO x .
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6258334 |
Mercury removal catalyst and method of making and using same
An activated carbon catalyst having sulfur dispersed homogeneously thereon, the sulfur being chemically bonded to the activated carbon. A method of making the catalyst involves forming an intimate...
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6221241 |
Process for removal of sulphur together with other contaminants from fluids
A process for the purification of a fluid stream containing a sulphur contaminant, such as hydrogen sulphide, and mercury, phosphine, stibine, and/or arsenic compounds as a second contaminant...
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6136072 |
Apparatus and method for the removal of contaminants in gases
An apparatus and method are described for removing vapor phase contaminants from a gas stream by placing a porous element having a sorbent material into ductwork through which the gas stream...
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6103205 |
Simultaneous mercury, SO.sub.2, and NO.sub.x control by adsorption on activated carbon
Regenerative adsorption of mercury on activated carbons derived from scrap tires enables the removal and recovery of mercury from combustion/incineration flue gas, with concurrent control of SO 2 ...
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6027551 |
Control of mercury emissions using unburned carbon from combustion by-products
Mercury emission from a flue gas such as that generated by a coal fired power plant is controlled by injecting into the flue gas unburned carbon purified from ash such as fly ash or wood ash. The...
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6007706 |
Removal of sulphur together with other contaminants from fluids
A process for the purification of a fluid stream containing a sulphur contaminant, such as hydrogen sulphide, and mercury, phosphine, stibine, and/or arsenic compounds as a second contaminant...
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