Solid Component Patents (Class 423/215.5)
  • Patent number: 8496895
    Abstract: Disclosed are an exhaust gas treating apparatus and a treating method for a carbon dioxide capture process, in which harmful substances remaining in the exhaust gas discharged from the conventional flue-gas desulfurization process are additionally removed for efficient performance of the carbon dioxide capture process. According to the exhaust gas treating apparatus for a carbon dioxide capture process, it has the effects of minimizing the installation space of desulfurization equipment and reducing the process cost. In addition, by keeping the contaminants contained in the gas introduced in the carbon dioxide capture equipment below a proper level, absorption performance can be improved as degradation of the absorbent used in the carbon dioxide capture process is prevented. After all, it has an advantage of preventing the pollution by the exhaust gas discharged into the atmosphere.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: July 30, 2013
    Assignee: Korea Institute of Energy Research
    Inventors: Hyung-Keun Lee, Won-Kil Choi, Hang-Dae Jo, Chang-Keun Yi, Sung-Ho Jo, Young-Cheol Park
  • Patent number: 8480984
    Abstract: A selective catalytic reduction system and method for reducing nitrogen oxide (NOx) emissions comprising a boiler producing flue gas emissions, a particulate control device receiving flue gas emissions from the boiler, a selective catalytic reduction unit (SCR) receiving flue gas emissions from the particulate control device and reducing nitrogen oxide (NOx) emissions, and a heat exchanger located downstream of the selective catalytic reduction unit (SCR) for removing heat from the flue gas for preheating at least one of boiler feed water and combustion air for the boiler.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: July 9, 2013
    Assignee: 2E Environmental, LLC
    Inventor: Robert Ellery
  • Patent number: 8444942
    Abstract: The present invention provides for process for inhibiting the levels of nitrogen oxides in process gas streams from sulfuric acid regeneration and sulfuric acid production plants. Partial oxidation of the nitrogen oxides is achieved by feeding a sub stoichiometric amount of ozone as to nitrogen oxides to the process gas stream.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: May 21, 2013
    Assignee: Linde Aktiengesellschaft
    Inventor: Naresh Suchak
  • Patent number: 8394347
    Abstract: An exhaust gas conversion system includes an oxide catalyst, a filter, a selective catalytic reduction catalyst and an ammonia supplying device. The filter has a honeycomb structural body including a honeycomb unit. The selective catalytic reduction catalyst has a honeycomb structural body including a honeycomb unit. The oxide catalyst, the filter and the selective catalytic reduction catalyst are sequentially arranged in a direction in which an exhaust gas flows. A ratio of an area of a cross section of the selective catalytic reduction catalyst perpendicular to a longitudinal direction of the selective catalytic reduction catalyst with respect to an area of a cross section of the filter perpendicular to a longitudinal direction of the filter is approximately 0.55 or more and approximately 0.90 or less. The area of the cross section of the filter is approximately 300 cm2 or more and approximately 1000 cm2 or less.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 12, 2013
    Assignee: Ibiden Co., Ltd.
    Inventors: Masafumi Kunieda, Shigeaki Goto
  • Patent number: 8388918
    Abstract: Methods are provided for physically removing all the carbon dioxide from the combustion products of solid, liquid, and gaseous fossil fuels. The combustors operate without excess air to maximize the carbon dioxide at the exhaust, which is compressed with the nitrogen and mixed with pressurized water to dissolve the carbon dioxide in a chamber from which the nitrogen gas is removed. The solution is drained into a second lower pressure chamber from which the carbon dioxide re-evolves as a gas, which is then pressurized for sequestration in limestone formations as calcium bicarbonate. The water is recycled to repeat the separation process, and depressurization of the two gases recovers most of the compression energy.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: March 5, 2013
    Inventor: Bert Zauderer
  • Patent number: 8388920
    Abstract: A method and apparatus for producing ammonia suitable for use as a reductant in a selective catalytic reduction (SCR), a selective non-catalytic reduction (SNCR), or a flue gas conditioning system is provided. A method for treating combustion exhaust gas with ammonia is provided that includes the electrolytic hydrolysis of urea under mild conditions. The electrolysis apparatus includes an electrolytic cell, which may be operatively coupled to an exhaust gas treatment system to provide an apparatus for reducing nitrogen oxides (NOx) and/or particulate in exhaust gases.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: March 5, 2013
    Assignee: Ohio University
    Inventor: Gerardine G. Botte
  • Publication number: 20130045149
    Abstract: Disclosed are oxalate sorbent compositions, methods for their manufacture, and methods for removing mercury species from waste streams employing oxalate sorbent compositions.
    Type: Application
    Filed: August 15, 2011
    Publication date: February 21, 2013
    Inventor: Seth Adrian Miller
  • Patent number: 8372363
    Abstract: A method for removing mercury in a combustion exhaust gas includes injecting ammonia or urea as a reducing agent into a combustion exhaust gas containing nitrogen oxides, sulfur dioxide, metallic mercury, and hydrogen halides, and then introducing the combustion exhaust gas to a denitration apparatus filled with a denitration catalyst to cause a denitration reaction and oxidize the metallic mercury to produce mercury halide; and introducing the combustion exhaust gas through an air preheater and an electric dust collector to a wet desulfurization apparatus, thereby removing sulfur dioxides and the mercury halide, wherein the ammonia concentration of the combustion exhaust gas at an exit of the denitration apparatus is maintained at 5 ppm or higher, and the mercury halide is adsorbed or precipitated onto combustion ash and collected by the electric dust collector to discharge the mercury halide out of a system.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: February 12, 2013
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Yasuyoshi Kato, Keiichiro Kai, Seiji Ikemoto
  • Patent number: 8367025
    Abstract: The disclosure provides methods and systems for sequestering and/or reducing carbon dioxide present in an industrial effluent fluid stream containing carbon dioxide. A scrubbing material comprising a first component, a second component (distinct from the first component), and preferably water, is contacted with the effluent fluid stream. The first component comprises a source of calcium oxide and a source of alkali metal ions. The second component comprises a slag having one or more reactive silicate compounds. Methods of reducing carbon dioxide from exhaust generated by combustion sources, lime and/or cement kilns, iron and/or steel furnaces, and the like are provided. Carbon dioxide emission abatement systems are also disclosed. Methods of recycling industrial byproducts are further provided.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: February 5, 2013
    Assignee: C-Quest Technologies LLC
    Inventor: Douglas C. Comrie
  • Patent number: 8349282
    Abstract: A method for the treatment of fly ash obtained from an incineration process of a waste incineration plant, in particular for municipal solid waste, whereby fly ash is separated from the incineration process. Furthermore, a method for the operation of a waste incineration plant, in particular for municipal solid waste or the like. The process for the treatment of fly ash is further characterized in that metals and/or metal containing compounds, in particular heavy metals and/or heavy metal containing compounds, are separated from the fly ash, which is separated from the combustion process and preferably non-fractioned, in a separation step and subsequently the fly ash reduced by the metals and/or metal containing compounds is, preferably dosed, mixed with or added to the waste to be incinerated so that the mineral parts of the fly ash, reduced by its metals and/or metal containing compounds, are returned to the combustion process.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: January 8, 2013
    Assignee: Green Conversion Systems, LLC
    Inventor: Heiner Zwahr
  • Patent number: 8349283
    Abstract: A metal recovery apparatus recovers metal components from an exhaust gas exhausted from a processing chamber in which a thin film is formed on the surface of a target substrate by using a source gas formed of an organic metal compound serving as a source, and scrubs the exhaust gas. The metal recovery apparatus 66 includes a trap unit having an adsorption member for attaching thereon metal components included in the source gas by heating the exhaust gas and thus thermally decomposing an unreacted source gas included in the exhaust gas; and the scrubbing unit including a catalyzer for oxidizing and thus scrubbing harmful gas components included in the exhaust gas that has flowed through the trap unit.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: January 8, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Masamichi Hara, Atsushi Gomi, Tatsuo Hatano
  • Patent number: 8329125
    Abstract: Recirculation of treated flue gas either independently or as a substitute for ambient air at specific points of ingress in a flue gas treatment system is provided to stabilize approach temperature and related parameters such as reagent consumption and pollution admission rate preventing both the accumulation of particulate matter and excessive corrosion associated with ambient air ingress. This recirculation provides a desired turbulence within remote regions of the flue gas treatment system to reduce the amount of particulate matter that may otherwise settle and accumulate in the absorber vessel or other areas of the system thereby causing particulate matter to be conveyed to the particulate removal device.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: December 11, 2012
    Assignee: Primex Process Specialists, Inc.
    Inventor: Stewart Nicholson
  • Patent number: 8329127
    Abstract: A catalyst comprising: (a) a first layer comprising an oxidizing catalyst having an effective PGM loading such that oxidation of hydrocarbons generates sufficient heat to regenerate soot, wherein said effective amount of PGM is greater than about 10 g/ft3; and (b) a second layer adjacent to said first layer and comprising a reducing catalyst to selectively reduce NOx.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: December 11, 2012
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Julian Peter Cox
  • Patent number: 8302388
    Abstract: After adjusting an exhaust gas temperature at an exit of a heat recovery unit (11) of an exhaust gas treating apparatus to not more than a dew point temperature of sulfur trioxide (SO3), a heavy metal adsorbent is supplied from a heavy metal adsorbent supply unit (16) disposed in an exhaust gas at an entrance of a precipitator (4) or an intermediate position within the precipitator (4), and the exhaust gas containing the heavy metal adsorbent is supplied into the precipitator (4). Preferably at this stage, the heavy metal adsorbent is supplied into the exhaust gas at the entrance of the precipitator (4) 0.1 seconds after the exhaust gas temperature at the exit of the heat recovery unit (11) has been adjusted to not more than the dew point temperature of SO3.
    Type: Grant
    Filed: December 24, 2007
    Date of Patent: November 6, 2012
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Kazuki Kobayashi, Hirofumi Kikkawa, Hiroshi Ishizaka, Hiroshi Takezaki, Hiroyuki Nosaka
  • Patent number: 8303849
    Abstract: A method of HCN removal from syngas including treating a hot syngas stream for conversion to chemical products by removing various components from the hot syngas stream by: passing the hot syngas stream to a scrubber; adding aldehyde to a circulating scrubber water; capturing ammonia and HCN in the circulating scrubber water and condensing water from the hot syngas stream into the circulating scrubber water; withdrawing a scrubber waste water effluent from the scrubber comprising absorbed ammonia, ammonium, and absorbed HCN, and glycol nitriles, formed from the reaction of the aldehydes with HCN, from the scrubber; withdrawing a treated syngas stream effluent from the scrubber having a reduced concentration of ammonia and HCN; and, passing at least a portion of the scrubber waste water effluent stream to a biological treatment zone for the removal of ammonia, absorbed HCN, and glycol nitriles.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: November 6, 2012
    Assignee: Coskata, Inc.
    Inventor: Robert Hickey
  • Publication number: 20120263634
    Abstract: A process of treating a gas stream containing at least one mercury compound or species, the process comprising: applying a composition into said gas stream ahead of a particulate matter collection device, wherein said composition contains a compound having the following formula (SiO2)x(OH)yMzSaF, wherein (i) SiO2 is an optional component; (ii) M comprises at least one of the following : boron, magnesium, aluminum, calcium, titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, palladium, silver, cadmium, tin, platinum, gold, and bismuth; (iii) S comprises a sulfur-based species selected from at least one of the following: sulfide salts, dithiocarbamates, polymer-based dithiocarbamates, and polysulfide salts; (iii) F is an optional component and comprises at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane.
    Type: Application
    Filed: October 7, 2011
    Publication date: October 18, 2012
    Inventors: Nicholas S. Ergang, Bruce A. Keiser, Richard Mimna
  • Patent number: 8240132
    Abstract: This catalyst system simultaneously removes ammonia and enhances net NO, conversion by placing an NH3-SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3-SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap—enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3-SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: August 14, 2012
    Assignee: Ford Global Technologies, Inc.
    Inventors: Haren S. Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
  • Publication number: 20120171092
    Abstract: A hot trap for removing a reactive constituent gas from a gas stream via chemical reaction and/or thermal disassociation includes a trap chamber with a heater assembly and a trap medium in its core inner portion and annular pre-heating and counterflow heating ducts in its outer and intermediate portions surrounding the core inner portion for heating an inflowing gas stream and conservation of heat energy in the trap as well as to maintain lower temperatures on external surfaces.
    Type: Application
    Filed: December 31, 2010
    Publication date: July 5, 2012
    Applicant: MKS Instruments, Inc.
    Inventors: Jeffrey D. Kiernan, Matthew C. Grout, Kevin Grout
  • Patent number: 8211393
    Abstract: An exhaust system for a vehicular positive ignition internal combustion engine comprises a filter for filtering particulate matter from exhaust gas emitted from the engine, which filter comprising a porous substrate having inlet and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a three-way catalyst washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, which is less than the first mean pore size, and a three-way catalyst washcoat disposed on a separate substrate monolith located upstream of the filter, wherein a mass of three-way catalyst washcoat on the upstream substrate monolith is ?75% of the total mass of three-way catalyst washcoat in the exhaust system.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: July 3, 2012
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Louise Clare Arnold, Robert James Brisley, Neil Robert Collins, David Robert Greenwell, Christopher Gough Morgan
  • Patent number: 8211389
    Abstract: Uses for a composition comprising a polymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals are disclosed. These polymers have many uses in various mediums, including wastewater systems.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: July 3, 2012
    Assignee: Nalco Company
    Inventors: Paul J. Zinn, Jitendra T. Shah, William J. Andrews
  • Patent number: 8211391
    Abstract: A selective catalytic reduction system and method for reducing nitrogen oxide (NOx) emissions comprising a boiler producing flue gas emissions, a particulate control device receiving flue gas emissions from the boiler, a selective catalytic reduction unit (SCR) receiving flue gas emissions from the particulate control device and reducing nitrogen oxide (NOx) emissions, and a heat exchanger located downstream of the selective catalytic reduction unit (SCR) for removing heat from the flue gas for preheating at least one of boiler feed water and combustion air for the boiler.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: July 3, 2012
    Assignee: 2E Environmental, LLC
    Inventor: Robert Ellery
  • Patent number: 8192706
    Abstract: A method for purifying waste gases of an at least partially burnt solid fuel to reduce pollutants such as SOx and/or HCl and NOx. The waste gas flows into a moving bed reactor from below through a lower and upper layer of an adsorption and/or absorption agent already polluted with NOx, SOx and/or HCl. SOx and/or HCl components are adsorbed from the waste gas into the NOx loaded adsorption and/or absorption agent. Thereafter, the waste gas is mixed with an ammonium-containing compound and flows through an upper horizontal gas inflow and bulk material removal tray of the moving bed reactor into the upper layer of the adsorption and/or absorption agent already polluted with NOx and small quantities of SOx and/or HCl. During the throughflow of the upper layer, NOx components are adsorbed from the waste gas onto the adsorption/absorption agent.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: June 5, 2012
    Inventor: Horst Grochowski
  • Patent number: 8192529
    Abstract: An air quality control system (AQCS) (4) useful for processing a gas stream (DG), such as a flue gas stream emitted from a fossil fuel fired boiler (2), combustion process or the like, for at least partial removal of acidic and like contaminants. The air quality control system (4) includes a plurality of integrated components (12) equipped with both a dry scrubber system (8) and a fabric filter (10). The air quality control system (4) such as described possesses increased “turn down” capabilities thus increasing the efficiency thereof.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: June 5, 2012
    Inventors: Lawrence H. Gatton, Jr., Alan W. Ferguson, Per H. F. Landmer
  • Patent number: 8182776
    Abstract: An integrated process for operating a fossil fuel fired power plant including: producing hydrogen gas and an aqueous solution of hydrogen peroxide via a process including: dissociating hydrogen gas and oxygen gas from water; pressurizing the hydrogen gas and the oxygen gas; and mixing, under pressure, the oxygen gas and at least about a stoichiometric portion of the hydrogen gas with an aqueous solution of a catalyst and a promoter to form the aqueous solution of hydrogen peroxide; supplying a remainder of the hydrogen gas to at least one of (a) a storage means, (b) a boiler detonation cleaning system of the fossil fuel fired power plant, and (c) an electrical generator of the fossil fuel fired power plant; and injecting the aqueous solution of hydrogen peroxide into an air pollution control system of the fossil fuel fired power plant.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: May 22, 2012
    Assignee: Electric Power Research Institute, Inc.
    Inventor: Bruce Edward Scherer
  • Patent number: 8182567
    Abstract: The invention relates to a method and a device for the coarse separation of solid particles from solid-laden gases. The invention further relates to a method for treating particulate feed materials by means of treatment gases in a reactor, particularly in a fluidization zone at an increased temperature. Due to a blind hole-like line extension, it is possible to separate solid particles from a solid-laden gas.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: May 22, 2012
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Georg Aichinger, Harald Bauernfeind, Johann Wurm
  • Patent number: 8173087
    Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline direct injection (GDI) engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate trap are provided. An exemplary particulate trap is a soot filter. Additional treatment components can be added downstream of the particulate trap, including NOx traps and SCR catalysts. The TWC catalyst can be coated on both the inlet side and the outlet side of the particulate trap. Alternatively, an oxidation catalyst can be deposited on a particulate trap. Methods of making and using the same are also provided.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: May 8, 2012
    Assignee: BASF Corporation
    Inventors: Junmei Wei, Knut Wassermann, Yeujin Li
  • Patent number: 8168148
    Abstract: A flue-gas purification system includes a flue-gas cycling system, a reactor, an absorbent adding system having at least a catalytic absorbent, wherein the catalytic absorbent is being gasified for reacting with the flue-gas in the reactor in a homogenous gas-gas phase reacting manner. Therefore, the purification system has fast reaction rate between the pollutants of the flue-gas and the catalytic absorbent, which is preferably ammonia, to efficiently remove pollutants, so as to effectively purify the flue-gas.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: May 1, 2012
    Inventors: Baoquan Zhang, Xiaoqing Zhang
  • Publication number: 20120100054
    Abstract: The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.
    Type: Application
    Filed: October 25, 2011
    Publication date: April 26, 2012
    Applicant: ADA-ES, INC.
    Inventors: Michael D. Durham, Sharon Sjostrom, Kenneth E. Baldrey
  • Patent number: 8142747
    Abstract: A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, a particulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: March 27, 2012
    Inventors: Anders Andreasson, Guy Richard Chandler, Claus Friedrich Goersmann, James Patrick Warren, Georg Huethwohl
  • Patent number: 8142744
    Abstract: An air pollution control system includes an emission treatment system configured to receive flue gas, to reduce at least one pollutant therefrom, and to output emission treated flue gas. A first air heater in fluid communication with the emission treatment system includes a heat exchanger for heating forced air introduced thereto above a base temperature and thereby cooling emission treated flue gas from the emission treatment system to a stack discharge temperature. A second air heater in fluid communication with the first air heater to receive heated forced air therefrom includes a heat exchanger for heating forced air introduced thereto to a preheat temperature for combustion in a boiler and thereby cooling flue gas introduced from a boiler to the second air heater to an emission treatment temperature. The second air heater is in fluid communication with the emission treatment system to introduce cooled flue gas thereto.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: March 27, 2012
    Assignee: Babcock Power Environmental Inc.
    Inventors: Richard F. Abrams, Mark R. Lewis, Jeffrey Penterson
  • Patent number: 8110164
    Abstract: A flue-gas purification system includes a flue-gas cycling system, a reactor, an absorbent adding system having at least a catalytic absorbent, wherein the catalytic absorbent is being gasified for reacting with the flue-gas in the reactor in a homogenous gas-gas phase reacting manner. Therefore, the purification system has fast reaction rate between the pollutants of the flue-gas and the catalytic absorbent, which is preferably ammonia, to efficiently remove pollutants, so as to effectively purify the flue-gas.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: February 7, 2012
    Inventors: Baoquan Zhang, Xiaoqing Zhang
  • Publication number: 20120024194
    Abstract: Methods, processes, and systems for reducing the solubility of toxic constituents found in coal combustion residues are provided. In one embodiment, methods for adding chemical reagents to the coal combustion process that changes the chemical composition of the coal combustion residues and convert the form of a toxic constituents to one with lower aqueous solubility is provided. In some embodiments compounds containing toxic constituents are converted to compounds that are less soluble in aqueous solvents. In various embodiments, the chemical reactions are aided by the ambient heat at various zones within the coal combustion system. In some embodiments, precursor reagents are added to the coal combustion system and converted to reagents to aid in interacting with toxic constituents or compounds. In various embodiments, the reagent or reagent precursor is added before, during, or after the coal combustion zone.
    Type: Application
    Filed: July 29, 2011
    Publication date: February 2, 2012
    Applicant: Headwaters Resources, Inc.
    Inventor: Rafic Minkara
  • Patent number: 8105560
    Abstract: A system for treating a gas stream containing nitrogen oxides (NOx) and particulates flowing in the system comprises means for injecting a source of ammonia (NH3) or urea (CO(NH2)2) into a flowing exhaust gas upstream of a precious metal-free particulate trap, a selective catalytic reduction catalyst disposed downstream of the particulate trap and a source of ammonia or urea.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: January 31, 2012
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Paul Richard Phillips, Gudmund Smedler, Martyn Vincent Twigg
  • Patent number: 8105558
    Abstract: The disclosure provides methods and systems for sequestering and/or reducing carbon dioxide present in an industrial effluent fluid stream containing carbon dioxide. A scrubbing material comprising a first component, a second component (distinct from the first component), and preferably water, is contacted with the effluent fluid stream. The first component comprises a source of calcium oxide and a source of alkali metal ions. The second component comprises a slag having one or more reactive silicate compounds. Methods of reducing carbon dioxide from exhaust generated by combustion sources, lime and/or cement kilns, iron and/or steel furnaces, and the like are provided. Carbon dioxide emission abatement systems are also disclosed. Methods of recycling industrial byproducts are further provided.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: January 31, 2012
    Assignee: C-Quest Technologies, LLC
    Inventor: Douglas C. Comrie
  • Patent number: 8092768
    Abstract: Apparatus and methods for collection and removal of particulate matter, including fine particulate matter, from a gas stream, comprising a unique combination of high collection efficiency and ultralow pressure drop across the filter. The apparatus and method utilize simultaneous electrostatic precipitation and membrane filtration of a particular pore size, wherein electrostatic collection and filtration occur on the same surface.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: January 10, 2012
    Assignee: Energy & Environmental Research Center Foundation
    Inventors: Stanley J. Miller, Ye Zhuang, Jay C. Almlie
  • Patent number: 8088348
    Abstract: An air pollution control system for a coal combustion boiler includes: a NOx removing apparatus that reduces nitrogen oxide contained in flue gas emitted from this coal combustion boiler, an air pre-heater that recovers heat in the gas, a precipitator 15 that reduces particulates from the gas, a liquid-gas contact type desulfurizer that removes sulfur oxide by way of a limestone-gypsum method and reduces mercury oxide in the gas, a stack that releases the gas after SOx removal to the exterior, and a solid-liquid separator that extracts limestone-gypsum containing slurry from the desulfurizer to the exterior and performs a solid-liquid separation, where water separated in the solid-liquid separator is removed, and concentrated slurry is sent back to the bottom of the desulfurizer to make the gypsum concentration of slurry equal to or higher than 10 percent in the desulfurizer.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: January 3, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Nobuyuki Ukai, Shintaro Honjo, Susumu Okino
  • Patent number: 8071060
    Abstract: A flue gas control system of a coal combustion boiler comprises an HCl atomizer that sprays hydrogen chloride to flue gas from a coal combustion boiler that uses coal as a fuel; NOx removing apparatus that removes nitrogen oxides by ammonia denitration by adding ammonia to the flue gas after spraying hydrogen chloride and oxidizes mercury; an air preheater that recovers heat in the gas after removal of nitrogen oxides; a precipitator that removes particulates in the gas; an activated carbon atomizer that sprays activated carbon into the gas after particulate collection; a bag filter that collects activated carbon having adsorbed mercury; a desulfurizer that removes sulfur oxides in the flue gas after removal of activated carbon; a stack that discharges the gas which has undergone desulfurization to outside; and an ORP meter that measures an oxidation reduction potential for feeding air to a slurry absorbent in the desulfurizer.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: December 6, 2011
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Nobuyuki Ukai, Shintaro Honjo, Susumu Okino
  • Patent number: 8057768
    Abstract: The invention relates to a special device for the purification of diesel exhaust gases, which device comprises, in the flow direction of the exhaust gas, an oxidation catalyst, a diesel particle filter with catalytically active coating, and, downstream of a device for introducing a reducing agent from an external reducing agent source, an SCR catalyst. The oxidation catalyst and the catalytically active coating of the diesel particle filter contain palladium and platinum. The ratio of the noble metals platinum and palladium in the overall system and on the individual components, oxidation catalyst and catalytically coated diesel particle filter, are coordinated with one another in such a way as to obtain firstly an optimum NO/NO2 ratio in the exhaust gas upstream of the downstream SCR catalyst, and secondly optimum heating and HC conversion behaviour during an active particle filter regeneration.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: November 15, 2011
    Assignee: Umicore AG & Co. KG
    Inventors: Wolfgang Schneider, Lothar Mussmann, Gerald Jeske, Michael Schiffer, Marcus Pfeifer
  • Patent number: 8048392
    Abstract: The present invention relates to a method for cleaning off-gas comprising the following steps: 1. Sulphur dioxide is separated from the off-gas by way of at least one first scrubber stage (c) by means of ammonia or ammonium compounds, 2. the off-gas is transferred into a second scrubber stage (d) and 3. in the second scrubber stage the sulphur dioxide not separated in the first scrubber stage (c), is oxidized to sulphuric acid and separated in at least one scrubber (d) and simultaneously, the ammonia released in the first scrubber stage (d) is separated by means of the formed sulphuric acid, whereby ammonium sulphate is formed, 4. the separated stream of the second scrubber stage (d) is transferred into the first scrubber stage (c).
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: November 1, 2011
    Assignees: Karlsruher Institut für Technologie, Göotaverken Miljö AB
    Inventors: Hans Hunsinger, Martin Karlssson, Sven Andersson, Ulf Hägg
  • Patent number: 8043590
    Abstract: A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, a particulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: October 25, 2011
    Assignees: Daimler AG, HJS Emission Technology GmbH & Co., Johnson Matthey PLC
    Inventors: Anders Andreasson, Guy Richard Chandler, Claus Friedrich Goersmann, James Patrick Warren, Georg Huethwohl
  • Publication number: 20110243819
    Abstract: Uses for a composition comprising a polymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals are disclosed. These polymers have many uses in various mediums, including wastewater systems.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 6, 2011
    Inventors: Paul J. Zinn, Jitendra T. Shah, William J. Andrews
  • Publication number: 20110243823
    Abstract: A method and apparatus for producing ammonia suitable for use as a reductant in a selective catalytic reduction (SCR), a selective non-catalytic reduction (SNCR), or a flue gas conditioning system is provided. A method for treating combustion exhaust gas with ammonia is provided that includes the electrolytic hydrolysis of urea under mild conditions. The electrolysis apparatus includes an electrolytic cell, which may be operatively coupled to an exhaust gas treatment system to provide an apparatus for reducing nitrogen oxides (NOx) and/or particulate in exhaust gases.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 6, 2011
    Applicant: OHIO UNIVERSITY
    Inventor: Gerardine G. Botte
  • Publication number: 20110223088
    Abstract: The invention provides various methods for removing gas phase pollutants by calcining limestone or dolomite using flash calcination to produce a high surface area lime or hydrated lime and directly adding the lime or hydrated lime to a gas stream containing gas phase pollutants. In other methods, the production of an activated sorbent, such as activated carbon, is combined with the production of the high surface area lime or hydrated lime and directly added to a gas stream containing gas phase pollutants. The combination of lime or hydrated lime and an activated sorbent enhances the removal of gas phase pollutants such as those from a coal-fired boiler flue gas.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 15, 2011
    Inventors: Ramsay Chang, Yongqi Lu, Massoud Rostam-Abadi
  • Publication number: 20110223083
    Abstract: A flue gas stream processing system includes a fuel reactor for combusting a fuel to generate a flue gas stream including water vapor, carbon monoxide and carbon dioxide. The system includes an oxidation catalyst downstream of the fuel reactor, the oxidation catalyst configured to receive the flue gas stream and oxidize the carbon monoxide to form a carbon dioxide rich flue gas stream, and a processing unit to liquefy carbon dioxide in the carbon dioxide rich flue gas stream and generate an exhaust gas.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 15, 2011
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: Michal T. Bialkowski, Gisbert Wolfgang Kaefer
  • Patent number: 8013205
    Abstract: A method for treating fly ash from incineration plants having at least one combustion chamber includes precipitating fly ash in a dust separator, and treating the fly ash using a gaseous reducing agent at a temperature between 600 and 700° C. so as to selectively convert a metal sulfate into at least one of a sulfide and a metallic form of the metal sulfate.
    Type: Grant
    Filed: December 20, 2008
    Date of Patent: September 6, 2011
    Assignee: Karlsruher Institut Fuer Technologies
    Inventor: Renata Cesnovar
  • Patent number: 8012439
    Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: September 6, 2011
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Louise Clare Arnold, Robert James Brisley, David Robert Greenwell, Christopher Gough Morgan
  • Publication number: 20110206585
    Abstract: A metal recovery apparatus recovers metal components from an exhaust gas exhausted from a processing chamber in which a thin film is formed on the surface of a target substrate by using a source gas formed of an organic metal compound serving as a source, and scrubs the exhaust gas. The metal recovery apparatus 66 includes a trap unit having an adsorption member for attaching thereon metal components included in the source gas by heating the exhaust gas and thus thermally decomposing an unreacted source gas included in the exhaust gas; and the scrubbing unit including a catalyzer for oxidizing and thus scrubbing harmful gas components included in the exhaust gas that has flowed through the trap unit.
    Type: Application
    Filed: August 4, 2009
    Publication date: August 25, 2011
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masamichi Hara, Atsushi Gomi, Tatsuo Hatano
  • Patent number: 7998898
    Abstract: A sorbent body adapted for abating toxic elements from a fluid stream, such as a carbon combustion flue gas stream or a syngas stream produced in coal gasification process, and process for making such sorbent. The sorbent body comprises an activated carbon matrix defining a plurality of pores, sulfur and an additive adapted for promoting the abatement of toxic elements from the fluid stream. At least one of the additive is formed into the sorbent body by in-situ forming such as in-situ extrusion. The sorbent is useful for abatement of, e.g., arsenic, cadmium, mercury and selenium from gas streams.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: August 16, 2011
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkarec, Benedict Y Johnson, Peiqiong Q Kuang, Anbo Liu, Youchun Shi
  • Patent number: 7993616
    Abstract: The disclosure provides methods and systems for sequestering and/or reducing sulfur oxides, nitrogen oxides and/or carbon dioxide present in industrial effluent fluid streams. A solid particulate material comprising a slag component, a binder component (distinct from the slag component), and optionally water is formed and then contacted with the effluent fluid stream to reduce at least one of the sulfur oxides, nitrogen oxides, and/or carbon dioxide. The contacting of the effluent stream may occur in a packed bed reactor with the solid dry particulate material. Methods of reducing pollutants from exhaust generated by combustion sources, lime and/or cement kilns, iron and/or steel furnaces, and the like are provided.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: August 9, 2011
    Assignee: C-Quest Technologies LLC
    Inventor: Douglas C. Comrie
  • Patent number: 7976801
    Abstract: A particulate converter for the collection and the incineration of particulate matters from diesel engine exhaust includes an exhaust path extending from the diesel engine through the particulate converter. The particulate converter further includes a housing and at least one candle located in the housing. An electrical incineration system may be electrically connected to a pulsed power supply for incinerating soot collected within the candle. A diesel oxidation catalyst (DOC) may be disposed in the exhaust path to generate sufficient amount of NO2 to assist in incineration. At least one exhaust cooling device may be provided for the control of exhaust temperature. A feedback control system may control exhaust gas temperatures based on pressure drop across the DPC, temperature ahead of the DPC and engine RPM.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: July 12, 2011
    Inventor: Refaat Kammel