|
Match
|
Document |
Document Title |
|
|
7622093 |
Method for zonal injection of chemicals into a furnace convective pass to reduce pollutants from flue gases
Zonal injection of varying compositions of chemicals, particularly an ammonia-based reagent and hydrocarbon, through injection lances arranged in a grid formation to define planar zones in a...
|
|
|
7622091 |
Methods and systems for reducing NOx emissions in industrial combustion systems
A method for operating a combustion system to facilitate reducing emissions from the system is provided. The method includes supplying an aqueous selective reducing agent from an aqueous selective...
|
|
|
7618604 |
Method and apparatus for removing gaseous mercury in flue gas
An object of the present invention is to provide a method for removing gaseous mercury in flue gas that make it possible to remove mercury in flue gas extremely satisfactorily while handling is...
|
|
|
7611623 |
Separation method using an ITQ-29 zeolite material
The invention relates to a method of separating the components of a mixture. The inventive method is characterised in that it comprises the following steps: (a) the bringing into contact of the...
|
|
|
7591985 |
Method for purifying germanium hydrides
In one aspect, the crude gas is contacted with a cold caustic solution to reduce levels of carbon dioxide and water. The partially purified gas is chilled in direct-contact with a hydrogen...
|
|
|
7588440 |
Carrier air heating system for SCR
A heat exchanger is provided in an air duct between an air heater and a windbox of a combustion means such as a boiler. Dilution air is carried to the heat exchanger from a dilution air fan in a...
|
|
|
7582271 |
Emission control system
Methods and apparatus utilizing hydrogen peroxide are useful to reduce SOx and mercury (or other heavy metal) emissions from combustion flue gas streams. The methods and apparatus may further be...
|
|
|
7572637 |
Method for controlling exhaust emission control device
Urea water is added to a catalyst in an exhaust pipe for purification. A first-order lag response model corresponding to the exhaust temperature upstream of the catalyst estimates catalyst...
|
|
|
7569200 |
Method for reducing nitrogen oxide emissions
The present invention relates to a method for reducing nitrogen oxide emissions in combustion. Fuel is combusted in a first zone, whereby nitrogen oxides are generated. Supplementary fuel is fed in...
|
|
|
7566431 |
Method for the treatment of combustion flue gas
A method for the removal of nitrogen oxides contained in combustion flue gas through treatment with gaseous ammonia, in which the gaseous ammonia is generated in situ by hydrolysis reaction of an...
|
|
|
7553463 |
Technical and economic optimization of combustion, nitrogen oxides, sulfur dioxide, mercury, carbon dioxide, coal ash and slag and coal slurry use in coal fired furnaces/boilers
Methods by which new or used boilers or furnaces ranging from small industrial to the largest utility units that are designed for coal or oil or natural gas or shredded waste or shredded biomass...
|
|
|
7550123 |
Method and apparatus for use of reacted hydrogen peroxide compounds in industrial process waters
Methods and apparatuses are described for contacting an oxidizing solution such as an aqueous hydrogen peroxide composition of hydrogen peroxide and at least one additive that catalyzes the...
|
|
|
7544328 |
Structure for reducing agent container
A canopy is removably secured to the container body, is respectively fitted with: a base of a water level indicator for detecting a remaining amount of liquid reducing agent; a base of a...
|
|
|
7537743 |
Method for in-furnace regulation of SO3 in catalytic NOx reducing systems
A method of controlling SO 3 flue gas concentration in a combustion process utilizing a SCR using a sulfurous fuel, the method steps including: providing a combustion system with low NOx burners...
|
|
|
7521031 |
Method and apparatus for treating exhaust gas
A method for treating exhaust gas includes: adsorbing target components in the exhaust gas with an adsorbent ( 5 ); introducing a nitrogen gas with an oxygen concentration of 10 vol % or less and a...
|
|
|
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...
|
|
|
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...
|
|
|
7494634 |
Reduction of nitrogen oxides using multiple split streams
Systems and methods of removing at least nitrogen oxides from an exhaust fluid generally include dividing a flow of an exhaust fluid comprising a concentration of nitric oxide into three types of...
|
|
|
7485276 |
Method for the removal of Nox and N2O from the tail gas in nitric acid production
A process is described for reducing the NO x concentration and N 2 O concentration from the residual gas from nitric acid production. The process encompasses the passing of the residual gas...
|
|
|
7481987 |
Method of removing sulfur trioxide from a flue gas stream
A method is provided for reducing the fouling during the removal of sulfur trioxide from a flue gas stream by maintaining the reagent (i. e. sodium sesquicarbonate) in contact with the flue gas for...
|
|
|
7481986 |
Method and system for injection of a solution into a gas stream
A method and a system for injection of a solution of a compound into a gas at elevated temperature. The method includes the steps of injecting the solution into an injection channel being provided...
|
|
|
7476372 |
Flue gas scrubbing process utilizing biosolids
A method for reducing acid gases in a flue gas, the method comprising reacting biosolids comprising a scrubbing agent with a flue gas comprising an acid gas, thereby reducing the amount of acid gas...
|
|
|
7470412 |
Reduction of CO and NOx in regenerator flue gas
A hot oxygen stream is fed into a catalyst regenerator flue gas stream that contains carbon monoxide to remove carbon monoxide. NOx precursors such as NH 3 and HCN are converted into N 2 and if...
|
|
|
7459134 |
Method of decarbonating a combustion fume with extraction of the solvent contained in the purified fume
The combustion fume flowing in through line 1 is decarbonated by contacting with a solvent in column C 2 . The solvent laden with carbon dioxide is regenerated in zone R. The purified fume...
|
|
|
7455820 |
Process for removing sulfur dioxide and nitrogen oxides from flue gas using chlorine dioxide
Disclosed herein is a process for removing sulfur dioxide (SO 2 ) and nitrogen oxides (NO x ) from flue gas using chlorine dioxide (ClO 2 ). In the process, chlorine dioxide is allowed to react...
|
|
|
7455819 |
Apparatus for simultaneous dry desulfurization/denitrification
It is an high efficiency and low cost apparatus for simultaneous dry desulfurization and denitration ( 10 ), capable of simultaneous oxidation of nitrogen monoxide and sulfur dioxide by chain...
|
|
|
7452517 |
Integrated approach to reduction of mercury emissions
Method for reducing mercury emissions from coal-fired combustion comprising staging of a combustion unit to remove mercury with fly ash from the flue gas, introducing activated carbon to remove...
|
|
|
7449162 |
Device for treatment of exhaust of an internal combustion engine
A method and a device for treatment of the exhaust of an internal combustion engine in which a fluid is used as an auxiliary agent for the treatment; a partial chemical conversion of the auxiliary...
|
|
|
7438878 |
Selective catalytic reduction of N2O
A gas stream containing nitrous oxide and ammonia is contacted with a catalyst composition containing a zeolite. N 2 O is reduced to N 2 and H 2 O at low temperatures in a highly efficient manner....
|
|
|
7435400 |
Optimizing post-combustion nitrogen oxide and sulfur dioxide reductions and improving combustion efficiency in coal fired boilers
A method for increasing the nitrogen oxide emissions by either removing or modifying fuel rich nitrogen oxide (NO x ) reduction processes thereby improving combustion efficiencies especially with...
|
|
|
7431906 |
Selective catalytic reduction
A process for the selective catalytic reduction of nitrogen oxides with ammonia in a lean-mix exhaust gas from a combustion process operated with a first, lean-mix air/fuel mixture, wherein the...
|
|
|
7416716 |
Purification of carbon dioxide
SO 2 and/or NO x are removed from gaseous CO 2 at elevated pressure(s) in the presence of molecular oxygen and water and, when SO 2 is to be removed, NO x , to convert SO 2 to sulfuric acid...
|
|
|
7416582 |
Method and apparatus for NOx and Hg removal
A cyclic process for the removal of NO x from a NO x containing feed gas, and optionally removal mercury vapour and/or sulfur dioxide is provided. A process is also provided by which an iron...
|
|
|
7404940 |
Method for flue-gas reduction of pollutants in combustion processes
Systems and methods for reduction of pollutants in combustion processes using combined rotating opposed fired air (ROFA) and fuel injection sorbents (FSI) for increased chemical reactivity.
|
|
|
7404939 |
Mercury removal sorbent
A sorbent composition comprising a vanadium compound and a TiO 2 support material is disclosed. Methods of making and using the composition to remove heavy metals or heavy metal containing...
|
|
|
7404938 |
Emission control system
Methods and apparatus utilizing hydrogen peroxide are useful to reduce NOx, SOx and mercury (or other heavy metal) emissions from combustion flue gas streams. Continuous concentration of hydrogen...
|
|
|
7384616 |
Waste gas treatment process including removal of mercury
A process for removing contaminants from a waste gas stream comprises treating the waste gas stream to remove at least one of SO 2 and NO x and to obtain a lean stream having a reduced level of...
|
|
|
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...
|
|
|
7374736 |
Method to reduce flue gas NOx
A method of decreasing the concentration of nitrogen oxides in a combustion flue gas in which a nitrogen reducing agent is introduced together with the overfire air to mixes with the products of...
|
|
|
7374735 |
Method for nitrogen oxide reduction in flue gas
A method of decreasing the concentration of nitrogen oxides in a combustion gas flowing through a vessel including the steps of: generating a flue gas in a combustion zone of the vessel, the flue...
|
|
|
7361319 |
Mixed metal oxide sorbents
The present invention is directed to methods for reducing SOx, NOx, and CO emissions from a fluid stream comprising contacting said fluid stream with a compound comprising magnesium and aluminum...
|
|
|
7335014 |
Combustion NOx reduction method
A method of extending the droplet half-life of water droplets in a combustion furnace by increasing the relative humidity in the droplets' environment; thereby reducing the evaporation rate of the...
|
|
|
7332142 |
Method and apparatus for bubble injection of agent into exhaust gas for use with emission abatement device
An apparatus comprises an exhaust system and an injection system. The injection system is configured to vaporize a first liquid portion of an agent into at least one bubble so as to inject a second...
|
|
|
7306774 |
Reactive membrane process for the removal of vapor phase contaminants
Generally, the present invention provides a method and apparatus for removing a vapor phase contaminant from a gas stream, thereby reducing the concentration of the vapor phase contaminant in the...
|
|
|
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...
|
|
|
7282189 |
Production of hydrogen and removal and sequestration of carbon dioxide from coal-fired furnaces and boilers
Methods for reducing and eliminating carbon dioxide from the emissions of solid fuel fired power plants, particularly coal fired power plants, and to sequester the carbon dioxide, typically by...
|
|
|
7276366 |
Biological scrubber odor control system and method
A system and method for the purification and biodeodorizing of a gas are disclosed. The system is highly adaptable and capable of operating in a variety of modes to tailor performance of the system...
|
|
|
7273595 |
Method and apparatus for the production of gaseous ammonia from a urea solution
A safe, economical and predictable process for producing ammonia from a urea solution, preferably where only a small amount of ammonia is required, (i.e. for SCR denitrification for small boilers,...
|
|
|
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...
|
|
|
7247285 |
Reduction of sulfur, nitrogen oxides and volatile trace metals from combustion in furnaces and boilers
A method for reducing the cost of emission control by utilizing a combination of low cost, combustion and post-combustion processes to eliminate emissions of sulfur and nitrogen oxides, and trace...
|