Mercury Sorbed Patents (Class 95/134)
  • Patent number: 9908084
    Abstract: A process for removing heavy metals from process fluids includes passing a heavy-metal-containing process fluid, including a reductant selected from hydrogen and carbon monoxide, at an inlet temperature ?125° C. over a sorbent including (i) 4-75% by weight of one or more sulphided copper compounds selected from sulphided basic copper carbonate, sulphided copper hydroxide, sulphided copper oxide or mixtures of these, (ii) optionally a support material, and (iii) a binder and the binder content of the sorbent is in the range 5-30% by weight, wherein essentially all of the sulphided copper is in the form of CuS and the total metal sulphide content of the sorbent, other than copper sulphide, is ?5% wt.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: March 6, 2018
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Andrew Fish, Andrea Lara Foster, Matthew David Gwydion Lunn, Rachel Mansfield
  • Patent number: 9682383
    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: Grant
    Filed: October 7, 2011
    Date of Patent: June 20, 2017
    Assignee: Nalco Company
    Inventors: Nicholas S. Ergang, Bruce A. Keiser, Richard Mimna
  • Patent number: 9550148
    Abstract: The method of capturing gaseous heavy metals disclosed herein includes exposing a stream of vapor including the gaseous heavy metals to a reactor bed of carbon (C) and aluminum (Al) in the form of pellets and granules. The gaseous heavy metals include mercury (Hg), mercury oxide (HgxOy), and other heavy metals in ionized or oxidized form.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: January 24, 2017
    Assignee: Paragon Waste Solutions, LLC
    Inventors: George Clampitt, Fortunato Villamagna
  • Patent number: 9539538
    Abstract: A multi-functional composition of matter that is useful for injection into a flue gas stream to rapidly and efficiently remove mercury from the flue gas stream. The multi-functional composition of matter may include a fixed carbon sorbent and minerals, halogens in the form of halide salts, as well as other physical and chemical properties to enhance (1) the oxidation reaction kinetics for the oxidation of mercury species and (2) the mass diffusion kinetics of the mercury species.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: January 10, 2017
    Assignee: ADA Carbon Solutions, LLC
    Inventors: Joseph M. Wong, Robert B. Huston, Christopher Vizcaino, Frederick S. Cannon
  • Patent number: 9468886
    Abstract: A promoted carbon and/or non-carbon base sorbent are described that are highly effective for the removal of mercury from flue gas streams. The promoted sorbent comprises a carbon and/or non-carbon base sorbent that has reacted with and contains forms of halogen and halides. Optional components may be added to increase and/or preserve reactivity and mercury capacity. These may be added directly with the base sorbent, or in-flight within a gas stream (air, flue gas, etc.), to enhance base sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The promoted sorbent can be regenerated and reused. Base sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active base sorbent into the mercury contaminated gas stream are described.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: October 18, 2016
    Assignee: Energy & Environmental Research Center Foundation
    Inventors: Edwin S. Olson, Michael J. Holmes, John H. Pavlish
  • Patent number: 9291557
    Abstract: A mercury detection system that includes a flow cell having a mercury sensor, a light source and a light detector is provided. The mercury sensor includes a transparent substrate and a submonolayer of mercury absorbing nanoparticles, e.g., gold nanoparticles, on a surface of the substrate. Methods of determining whether mercury is present in a sample using the mercury sensors are also provided. The subject mercury detection systems and methods find use in a variety of different applications, including mercury detecting applications.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: March 22, 2016
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jay James, Donald Lucas, Jeffrey Scott Crosby, Catherine P. Koshland
  • Patent number: 9101907
    Abstract: Compositions, and processes utilizing such compositions, are provided for reducing mercury emissions from combustion gases. Such compositions comprise a wood-derived or coconut shell-derived activated carbon and/or a bromide-containing inorganic salt such as an ammonium bromide or calcium bromide salt.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: August 11, 2015
    Assignee: Albemarle Corporation
    Inventors: Christopher J. Nalepa, Qunhui Zhou
  • Patent number: 9097420
    Abstract: Methods of treating mercury contaminated gas comprising: introducing a hydrogen halide selected from HBr and HI into a mercury contaminated gas stream containing a quantity of particulate matter at an introduction rate sufficient to create a concentration of at least 0.1 ppmvd; wherein greater than 50% of all particulate matter in the mercury contaminated gas stream is a native particulate matter; contacting a quantity of active bromine with the native particulate matter; creating a doped particulate matter; coating a filtration media with the doped particulate matter and passing a portion of the mercury contaminated gas stream through the doped particulate matter on the filtration media and other related methods are disclosed herein.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: August 4, 2015
    Assignee: SHAW ENVIRONMENTAL & INFRASTRUCTURE, INC.
    Inventors: Randall P. Moore, Kevin Jackson, Stephen Baloga, Bobby I. T. Chen, Berani A. C. Halley, John Edel
  • Publication number: 20150135953
    Abstract: The present invention relates in general to a method of producing activated carbon. Dregs are removed from a pulp mill green liquor clarifier and washed with an acid to produce an activated carbon. The activated carbon slurry can be used to remove mercury from a waste gas stream.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 21, 2015
    Applicant: S&S Lime, Inc.
    Inventors: John C. Stuever, Susan C. Stuever
  • Patent number: 9028248
    Abstract: The invention relates to a process and a plant for producing cement clinker, which has a furnace system and has essentially the following process steps:—raw material is preheated in a preheater by means of hot offgases from the furnace system,—dust is removed from the hot offgas downstream of the preheater in a preliminary dust removal apparatus to a residual dust concentration of max. 20 g/standard m3,—the offgas which has been subjected to preliminary dust removal is purified in a selective catalytic flue gas purification plant (selective catalytic reduction, SCR),—at least part of the offgas purified in the flue gas purification plant is conveyed in a bypass around a raw material milling plant to a cooling device and cooled there to temperatures of max. 140° C.,—before the residual dust in the offgas is precipitated in a process filter and—at least part of the residual dust precipitated in the process filter is discharged for removal of mercury.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: May 12, 2015
    Assignee: ELEX CemCat AG
    Inventor: Franz-Josef Zurhove
  • Publication number: 20150114225
    Abstract: A flue gas is cleaned by feeding same to a filtering separator. The filtering separator is accommodated in a housing, and the housing has a pre-filter side ahead of the filtering separator and a clean side following the filtering separator in the flue gas flow direction. A filter element has an adsorbent formed of dust-free spheroidal charcoal on the clean side of the housing. The flue gas flows through the adsorbent in the filter element. Harmful substances from the group including mercury and/or dioxin and/or furan and/or further heavy metals are thereby removed from the flue gas.
    Type: Application
    Filed: January 5, 2015
    Publication date: April 30, 2015
    Inventors: JUERGEN WALLER, RAINER BERTLING
  • Patent number: 9006508
    Abstract: A method of removing mercury and/or sulfur from a fluid stream comprising contacting the fluid stream with a sorbent comprising a core and a porous shell formed to include a plurality of pores extending therethrough and communicating with the core. The core comprises a copper compound selected from the group consisting of a basic copper oxysalt, a copper oxide, and a copper sulfide.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: April 14, 2015
    Assignee: UOP LLC
    Inventors: Vladislav Ivanov Kanazirev, Dante A. Simonetti, Peter Rumfola, III
  • Patent number: 8974578
    Abstract: Porous polymeric networks and composite materials comprising metal nanoparticles distributed in the polymeric networks are provided. Also provided are methods for using the polymeric networks and the composite materials in liquid- and vapor-phase waste remediation applications. The porous polymeric networks, are highly porous, three-dimensional structures characterized by high surface areas. The polymeric networks comprise polymers polymerized from aldehydes and phenolic molecules.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: March 10, 2015
    Assignee: Northwestern University
    Inventors: Mercouri G. Kanatzidis, Alexandros Katsoulidis
  • Patent number: 8961654
    Abstract: This invention provides methods for reducing emissions of mercury from a cement plant comprising at least a kiln (6), a particulate collection device (10), collected particulates, an exhaust gas stream (8b), a heater, and a mercury scrubber, wherein the heater and mercury scrubber are upstream from the kiln. The methods comprise directing the collected particulates through the heater, to form volatilized mercury species from the collected particulates; directing the collected particulates from the heater downstream toward the kiln; and directing the volatilized mercury species to the mercury scrubber. The exhaust gas stream (8c) exits the particulate collection device and is not directed into the heater. Optional steps include injecting a mercury sorbent at one or more points between the kiln and the particulate collection device.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: February 24, 2015
    Assignee: Albemarle Corporation
    Inventors: Xin Liu, Jon E. Miller, Zhong Tang, Qunhui Zhou, Yinzhi Zhang, Kara M. Thalls
  • Patent number: 8951487
    Abstract: The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: February 10, 2015
    Assignee: ADA-ES, Inc.
    Inventors: Michael D. Durham, Sharon Sjostrom, Kenneth E. Baldrey
  • Patent number: 8926734
    Abstract: An exemplary embodiment of the present invention provides an induced-draft injection system comprising an injection line in fluid communication with a duct under negative pressure, a particulate storage containing particulate, and a feeder receiving the particulate from the particulate storage and feeding the particulate to the injection line. The negative pressure in the duct supports the transportation of at least a portion of the particulate through the injection line and into the duct. Inside the duct, a binding portion of the particulate is bound to a portion of mercury in a flue gas passing through the duct, thus enabling a portion of the mercury to be filtered out of the flue gas.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: January 6, 2015
    Assignee: The Southern Company
    Inventor: Luke Reagan
  • Patent number: 8906140
    Abstract: A filtration module is provided that includes a filter member and a spacing member disposed in detached, contact engagement along a length of each member, such length extending about a longitudinal axis of a filtration module to define a concentric and detached plurality of filtration layers, and an interleaved, concentric and detached plurality of spacing layers, respectively. One or both of the plurality of spacing layers and plurality of filtration layers may provide a radially-inward directed force. The spacing member may be elastically deformed in the filtration module to apply a radially-inward directed force and a radially-outward directed force, wherein the filtration and spacing layers are retained in substantial fixed spatial relation. A retaining member may be located to engage an external side surface of the filtration module. A filtration module may be constructed by winding the filter member and spacing member about a longitudinal axis of the module.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: December 9, 2014
    Assignee: W.L. Gore & Associates, Inc.
    Inventors: Steve Stark, Richard Gebert, John Knotts, John Pasmore
  • Patent number: 8876952
    Abstract: A method of removing mercury from a fluid stream comprising contacting the fluid stream with a sorbent comprising cupric sulfide. The cupric sulfide is formed from direct sulfidation of copper carbonate, without thermal decomposition of the copper carbonate to an oxide, at a temperature less than about 150° C.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: November 4, 2014
    Assignee: UOP LLC
    Inventors: Dante A. Simonetti, Vladislav I. Kanazirev, Thomas J. Traynor
  • Patent number: 8876958
    Abstract: A process for removing mercury from a gas or liquid phase, wherein the gas or liquid phase containing mercury is placed in contact with a composition comprising a precipitated metal sulfide. The precipitated metal sulfide may be made by the process of combining a metal source, sulfide source, and modifier to form the precipitated metal sulfide. The metal source may comprise iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, silver, or gold salts. The metal salt may be selected from metal nitrate, metal sulfate, metal phosphate, metal acetate, metal carbonate, metal hydroxide, metal ammonium carbonate, and metal hydroxycarbonate. The sulfide source is selected from hydrogen sulfide (H2S), carbonyl sulfide (COS), salts of sulfide (S2?), salts of hydrosulfide (HS?), and salts of polysulfide (Sn2?). The modifier may be selected from alumina, silica, aluminosilicate, clay, zeolites, carbon, cement, titania, zirconia.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: November 4, 2014
    Assignee: Clariant Corporation
    Inventors: Wayne Turbeville, Greg Korynta, Todd Cole, Jeffery L. Braden
  • Patent number: 8871007
    Abstract: This invention provides a method for reducing mercury emissions from a cement plant comprising at least a particulate collection device and a preheater tower comprised of one or more preheater cyclones. The method comprises injecting pulverized coal into at least one preheater cyclone of said cement plant.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 28, 2014
    Assignee: Albemarle Corporation
    Inventors: Xin Liu, Jon E. Miller
  • Patent number: 8871006
    Abstract: The invention relates to a solid mineral composition of heavy metals, in particular mercury, in flue gas, to a method for preparing such a solid mineral compound and to the use thereof for reducing heavy metals, in particular mercury, in flue gas, by placing the flue gas in contact with the solid mineral composition.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: October 28, 2014
    Assignee: S. A. Lhoist Recherche et Developpement
    Inventors: Alain Brasseur, Jean-Paul Pirard, Alain Laudet
  • Patent number: 8845786
    Abstract: The present invention relates to a method for purifying a gas stream including CO2, elemental mercury (Hg0) and nitrogen oxides (NOx).
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: September 30, 2014
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Alain Briglia, Christian Monereau
  • Publication number: 20140260976
    Abstract: An integrated device for removal of both liquid-containing droplets and pollutants from a gas stream includes a plurality of passageways and a plurality of exposed surface portions, different ones of the surface portions disposed along different ones of the plurality of passageways. The plurality of passageways include an inlet and an outlet for the flow of a gas stream therethrough, wherein each passageway includes at least one segment configured to perturb the flow of at least a portion of the gas stream between the inlet and the outlet. Such gas perturbation enhances gas stream contact with the exposed surfaces. Portions of the exposed surfaces comprise a sorbent-polymer-composite material adapted for adsorption of elemental and oxidized mercury vapor. The exposed surfaces are disposed to enhance the removal of liquid-containing droplets and elemental and oxidized mercury vapor.
    Type: Application
    Filed: February 25, 2014
    Publication date: September 18, 2014
    Applicant: W. L. Gore & Associates, Inc.
    Inventors: Stephen K. Stark, Wai Sing Poon, Richard E. Gebert
  • Patent number: 8834606
    Abstract: A flue gas adsorbent and method for making an adsorbent for mercury capture are disclosed. The adsorbent comprises an admixture of an adsorptive material and an additive that have been physically combined thereby eliminating the need for traditional impregnation. A method for removing mercury from a flue gas stream is also disclosed.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 16, 2014
    Assignee: Calgon Carbon Corporation
    Inventor: Nicholas R. Pollack
  • Patent number: 8828731
    Abstract: A method for facilitating removal of mercury from a primary fluid stream of interest which is contaminated with organically-bound, elemental, and ionic mercury species. The stream is analyzed to establish the relative content of the organically-bound, elemental, and ionic mercury species present therein by forming a diverted side stream from the primary stream, and passing the side stream successively through three in series filter stages, the first captures organically bound mercury, the second captures elemental mercury, and the third captures ionic mercury. The side stream flow through the filter stages is continued for a predetermined period, and upon conclusion of the period the quantity of mercury collected at each of the filtration stages is determined. This data is then utilized to determine the capacity of the three different filtration stages required to reduce the mercury content in the mam stream to a desired level.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: September 9, 2014
    Assignee: MyCelx Technologies Corporation
    Inventor: Hal Alper
  • Patent number: 8821819
    Abstract: 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 forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: September 2, 2014
    Assignee: Energy & Environmental Research Center Foundation
    Inventors: Edwin S. Olson, Michael J. Holmes, John Henry Pavlish
  • Patent number: 8808434
    Abstract: A method of removing mercury from a process gas by means of a sorbent and a filter (10) involves applying said sorbent to at least one filtering surface (12) of the filter (10). A first parameter, which is indicative of the amount of mercury that needs to be removed in said filter (10), and a second parameter, which is indicative of the amount of material that has been collected on said filtering surface (12), are measured. A measured value of said first parameter is compared to a mercury set point. When said measured value of said first parameter is higher than said mercury set point, the cleaning of said filtering surface (12) is delayed, compared to the point in time suggested by a measured value of said second parameter.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 19, 2014
    Assignee: ALSTOM Technology Ltd
    Inventor: Lief A. V. Lindau
  • Patent number: 8795414
    Abstract: A process and system for feeding solids and carrier gases through the wall of a duct or chamber through which a gas stream flows to the flowing gas stream from a feed source exterior of the duct or chamber.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: August 5, 2014
    Assignee: Albemarle Corporation
    Inventor: Xin Liu
  • Patent number: 8747676
    Abstract: A support impregnated with selenium and capable of effectively removing a heavy metal from a process stream that is at an ambient temperature or is at an elevated temperature.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: June 10, 2014
    Assignee: Phillips 66 Company
    Inventors: Mark A. Hughes, Roland Schmidt, John M. Hays
  • Publication number: 20140155260
    Abstract: A process for removing mercury from a gas or liquid phase, wherein the gas or liquid phase containing mercury is placed in contact with a composition comprising a precipitated metal sulfide. The precipitated metal sulfide may be made by the process of combining a metal source, sulfide source, and modifier to form the precipitated metal sulfide. The metal source may comprise iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, silver, or gold salts. The metal salt may be selected from metal nitrate, metal sulfate, metal phosphate, metal acetate, metal carbonate, metal hydroxide, metal ammonium carbonate, and metal hydroxycarbonate. The sulfide source is selected from hydrogen sulfide (H2S), carbonyl sulfide (COS), salts of sulfide (S2-), salts of hydrosulfide (HS—), and salts of polysulfide (Sn2-).
    Type: Application
    Filed: December 3, 2012
    Publication date: June 5, 2014
    Applicant: SUD-CHEMIE INC.
    Inventors: Wayne Turbeville, Greg Korynta, Todd Cole, Jeffery L. Braden
  • Patent number: 8735319
    Abstract: Metal sorbent compositions for removing a metal contaminant from a fluid, such as removal of mercury from a coal-fired flue gas stream, and methods for making and using the same are provided. The subject metal sorbent compositions comprise an effective amount of an aqueous dispersion of microfine elemental sulfur particles on an adsorbent substrate, and optionally, a metal capture enhancing agent such as a halogen source and/or an oxidizing agent in an amount providing a metal capture enhancing effect on the metal sorbent composition. The subject metal sorbent compositions are prepared by drying an aqueous dispersion of microfine elemental sulfur particles on an adsorbent substrate, such as on a substrate of microfine particles of a refractory material and the like. Also provided are kits for use in preparing the subject compositions, and compositions produced by the methods. The subject compositions, kits and systems find use in a variety of different applications.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: May 27, 2014
    Assignees: St. Cloud Mining Company, Via Consulting, LLC
    Inventors: Francis A Via, William Ahrens, Daniel T Eyde
  • Patent number: 8728974
    Abstract: 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. Embodiments include brominated sorbent substrate particles having a carbon content of less than about 10%. Other embodiments include one or more oxidatively active halides of a nonoxidative metal dispersed on sorbent substrate particles mixed with activated carbon in an amount up to 30% by weight.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: May 20, 2014
    Assignee: BASF Corporation
    Inventors: Xiaolin David Yang, Pascaline Harrison Tran, Lawrence Shore
  • Patent number: 8728207
    Abstract: In the method according to the invention for separating mercury from waste gases of a cement production process, the mercury is sorbed on a sorbent, the sorbent is subsequently discharged from the process and supplied to a discharge reactor which is operated with a carrier gas. The sorbent is heated there to temperatures of more than 250° C. so that the mercury is discharged from the sorbent and changed into the gas phase, the gas of the discharge reactor that has accumulated mercury subsequently having the dust removed from it in a preliminary dust removal device, and only a part-flow of the gas which has been enriched and had the dust removed from it in this manner being drawn off at high temperatures and cleaned in a subsequent sorption stage, whilst the remaining part-flow is brought to the temperature required for the discharge of the mercury in the discharge reactor in a heat transfer system and is again supplied as a carrier gas to the discharge reactor.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: May 20, 2014
    Inventors: Dietmar Schulz, Ludger Brentrup, Karl Menzel, Reinhard Beilmann, Detlev Kupper, Mark Terry
  • Patent number: 8690991
    Abstract: Synthesis of a support material impregnated with silver sulfide provides a sorbent composition. Generating the silver sulfide relies on reaction of sulfur dioxide and one of hydrogen gas and hydrogen sulfide in presence of the support material following silver loading of the support material. Contacting a fluid stream with the sorbent composition removes heavy metal from the fluid stream.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 8, 2014
    Assignee: Phillips 66 Company
    Inventors: Roland Schmidt, Mark A. Hughes, John Michael Hays, Robert William Morton, Jon M. Nelson
  • Patent number: 8679234
    Abstract: An object of the present invention is to provide a heavy metal removing apparatus which can efficiently remove the heavy metal contained in the dust produced by burning of the raw material containing the heavy metal, and a cement production system comprising the heavy metal removing apparatus. The heavy metal removing apparatus 10 comprises a cyclone separator 11 which separates exhaust gas containing the heavy metal from a part of the dust heated to a temperature equal to or more than a temperature at which the heavy metal can volatilize, a bag filter 13 which is connected to the subsequent stage of the cyclone separator 11 and separates the exhaust gas containing the heavy metal from the remainder of the dust, and a heavy metal removal tower 14 which is connected to the subsequent stage of the bag filter and removes the heavy metal from the exhaust gas.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: March 25, 2014
    Assignee: Taiheiyo Cement Corporation
    Inventors: Kazuhiko Soma, Takahiro Kawano, Tokuhiko Shirasaka, Hidenori Isoda, Osamu Yamaguchi
  • Patent number: 8668765
    Abstract: A drying system includes a desiccant wheel that dries incoming air. The dried air is heated using a heating element to promote drying of an article within the drying system. A portion of the heated air is diverted to a secondary air path that leads away from the drum holding the article. The diverted portion is used to regenerate an area of the desiccant wheel. A secondary heating element is used to promote regeneration and located in the secondary air path.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: March 11, 2014
    Assignee: Protege Enterprises
    Inventors: Charles Robert Dewald, III, Thomas L. Cristello
  • Patent number: 8664154
    Abstract: The present disclosure relates to methods of making and using activated carbon-containing coated substrates, and products made therefrom.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: March 4, 2014
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Andrew Fleitz Husted, James Robert Lim
  • Patent number: 8663586
    Abstract: A method and system for high performance mercury capture from solid fuel combustion flue gas is provided. The method includes injecting pulverized activated carbon into a mercury capture system with at least a first and a second fabric filter, collecting the pulverized activated carbon captured in the second fabric filter, and injecting the collected pulverized activated carbon from the second fabric filter upstream of the first fabric filter for reuse to capture mercury from the process gas.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: March 4, 2014
    Assignee: ALSTOM Technology Ltd
    Inventor: Dennis James Laslo
  • Patent number: 8652235
    Abstract: A promoted carbon and/or non-carbon base sorbent are described that are highly effective for the removal of mercury from flue gas streams. The promoted sorbent comprises a carbon and/or non-carbon base sorbent that has reacted with and contains forms of halogen and halides. Optional components may be added to increase and/or preserve reactivity and mercury capacity. These may be added directly with the base sorbent, or in-flight within a gas stream (air, flue gas, etc.), to enhance base sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The promoted sorbent can be regenerated and reused. Base sorbent treatment and preparation methods are also described. Methods for in-flight preparation, introduction, and control of the active base sorbent into the mercury contaminated gas stream are described.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: February 18, 2014
    Assignee: Energy & Environmental Research Center Foundation
    Inventors: Edwin S. Olson, Michael J. Holmes, John H. Pavlish
  • Patent number: 8647411
    Abstract: A method of removing mercury from a process gas by means of a sorbent and a filter (10) involves applying said sorbent to at least one filtering surface (12) of the filter (10). A first parameter, which is indicative of the amount of mercury that needs to be removed in said filter (10), and a second parameter, which is indicative of the amount of material that has been collected on said filtering surface (12), are measured. A measured value of said first parameter is compared to a mercury set point. When said measured value of said first parameter is higher than said mercury set point, the cleaning of said filtering surface (12) is delayed, compared to the point in time suggested by a measured value of said second parameter.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: February 11, 2014
    Assignee: ALSTOM Technology Ltd
    Inventor: Leif A. V. Lindau
  • Publication number: 20140011034
    Abstract: A process for conversion of conventional sand granules (or other particulates) to a ‘core-shell’ adsorbent granules in which GO (or GO-f) coating imparts nano structural features on the surface of the sand granules (or other particulates). Such materials are useful in a variety of engineering applications such as water purification, catalysis, capacitors, proppants, casting, and magnetic shielding.
    Type: Application
    Filed: March 18, 2011
    Publication date: January 9, 2014
    Applicants: William Marsh Rice University, NanoHoldings LLC
    Inventors: Mainak Majumder, Wei Gao, Pulickel Madhavapanicker Ajayan, Tharangattu Narayanan, Bhabendra K. Pradhan
  • Patent number: 8623120
    Abstract: An apparatus and a method for recovery of sulfur hexafluoride is provided. Sulfur hexafluoride (SF6) may be separated with high-concentration and improved recovery ratio through a multi-stage separation and recovery processes using a plurality of separation membrane modules, and as well, SF6 gas may be concentrated to maximize the SF6 recovery ratio before the separation and recovery processes through the separation membrane modules. Furthermore, sulfur dioxide (SO2) and moisture included in the SF6 waste gas may be removed effectively so as to extend the service life of the separation membrane modules.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: January 7, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Sang Hyup Lee, Hyun Jung Lee, Joong Kee Lee, Joo Man Woo, Min Woo Lee, Han Byul Kim
  • Patent number: 8609046
    Abstract: A process of treating a gas stream containing mercury and acid gas pollutants is disclosed. The process includes applying a sorbent composition into a gas stream in order to adsorb mercury containing compounds and acid gas pollutants. The sorbent composition includes a compound having the formula (SiO2)x(OH)yMzSaF.B. The combination of basic inorganic solids for the adsorption of acid gases, and metal sulfide-doped silica for the adsorption of mercury provides dual sorbent functionality, along with additional benefits for each individual sorbent: silica for moisture retention on the surface of the basic inorganic particle and adsorption of acid gas, which will improve metal sulfide performance at higher operating temperatures. The use of a hygroscopic solid effectively dries the metal sulfide-doped silica slurry without the use of filtration of drying equipment, providing significant economic benefit for the manufacture of metal sulfide-doped silica material.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: December 17, 2013
    Assignee: Nalco Company
    Inventors: Nicholas S. Ergang, Ian Saratovsky, Tommy Chen
  • Patent number: 8603224
    Abstract: A method for the removal of mercury from a stream of flue gas obtained from the combustion of at least one coal includes the steps of introducing a kaolin- or metakaolin-containing sorbent into the stream of flue gas for removing mercury from the stream of flue gas and contacting the mercury with the kaolin or metakaolin-containing sorbent in the presence of active free silica. Further to the introduction of the kaolin- or metakaolin-containing sorbent into the stream of flue gas, a source of active free silica is introduced so as to increase the active free silica content of the flue gas resulting from the combustion by the introduction of additional free silica. The flue gas has a temperature of at least approximately 900° C., for example >1000° C. at the point where the kaolin or metakaolin-containing sorbent is introduced.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 10, 2013
    Assignee: Voith Patent GmbH
    Inventor: Joseph J. P. Biermann
  • Patent number: 8598073
    Abstract: The present disclosure relates to methods of making and using activated carbon-containing coated substrates, and products made therefrom.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: December 3, 2013
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Andrew Fleitz Husted, James Robert Lim
  • Publication number: 20130291722
    Abstract: A gas purification system for cleaning a carbon dioxide rich flue gas generated in a boiler combusting a fuel in the presence of a gas containing oxygen. The gas purification system includes a compressor for compressing the carbon dioxide rich flue gas, a first gas cooler for cooling the compressed carbon dioxide rich flue gas, a mercury adsorber arranged downstream of the first gas cooler for removing at least a portion of a mercury content of the cooled compressed carbon dioxide rich flue gas, a second gas cooler arranged downstream of the mercury adsorber for further cooling the compressed carbon dioxide rich flue gas, and a gas drier for removing at least a portion of a water content of the further cooled compressed carbon dioxide rich flue gas.
    Type: Application
    Filed: July 12, 2013
    Publication date: November 7, 2013
    Inventor: Olaf STALLMANN
  • Patent number: 8574349
    Abstract: A method for the removal of mercury from a stream of flue gas obtained from the combustion of at least one coal type having an ASTM D388 coal rank of <3 includes the steps of introducing a kaolin or metakaolin-containing sorbent into the stream of flue gas and contacting the mercury with the kaolin or metakaolin-containing sorbent at a point where both the kaolin or metakaolin-containing sorbent and active free silica are present in the stream. The temperature of the flue gas is at least 900° C. The active free silica content of the flue gas resulting from the combustion of the coal is supplemented by the introduction of added active free silica such that the weight percentage of the total amount of active free silica relative to the weight of kaolin or metakaolin is at least 10%, the weight of any kaolin being expressed as the weight of metakaolin.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: November 5, 2013
    Assignee: Voith Patent GmbH
    Inventor: Joseph J. P. Biermann
  • Patent number: 8568514
    Abstract: Compositions, and processes utilizing such compositions, are provided for reducing mercury emissions from combustion gases. Such compositions comprise a sorbent and a brominated organic compound.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: October 29, 2013
    Assignee: Albemarle Corporation
    Inventor: Christopher J. Nalepa
  • Patent number: 8551216
    Abstract: Systems and methods for treating a fluid with a body are disclosed. Various aspects involve treating a fluid with a porous body. In select embodiments, a body comprises ash particles, and the ash particles used to form the body may be selected based on their providing one or more desired properties for a given treatment. Various bodies provide for the reaction and/or removal of a substance in a fluid, often using a porous body comprised of ash particles. Computer-operable methods for matching a source material to an application are disclosed. Certain aspects feature a porous body comprised of ash particles, the ash particles have a particle size distribution and interparticle connectivity that creates a plurality of pores having a pore size distribution and pore connectivity, and the pore size distribution and pore connectivity are such that a first fluid may substantially penetrate the pores.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: October 8, 2013
    Assignee: Errcive, Inc.
    Inventors: Charles E. Ramberg, Stephen A. Dynan, Jack A. Shindle
  • Patent number: 8545598
    Abstract: A mercury removal system and methods thereof include at least one supply system, at least one cooling system and at least one separation system. The supply system is connected to introduce at least beneficiated fly ash particles into an exhaust stream. The exhaust stream comprises at least one exhaust gas and mercury and at least a portion of the mercury in the exhaust stream adheres to the introduced beneficiated fly ash particles. The cooling system cools the exhaust stream before or after the connection of the supply system to the exhaust stream. The separation system separates from the exhaust stream and outputs at least a portion of the introduced beneficiated fly ash particles with the adhered mercury.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: October 1, 2013
    Assignee: PMI Ash Technologies, LLC
    Inventors: Joseph W. Cochran, S. Frank Kirkconnell, Vincent M. Giampa