Utilizing Solid Reactant Or Catalyst To Remove Or Modify Sulfur Or Sulfur Containing Component Patents (Class 423/244.01)
  • Patent number: 10596607
    Abstract: A composition useful for removing energetic compounds from contaminated environments. The composition includes a supported reactant including an adsorbent with high affinity for energetic compounds. Further, the composition includes a first bioremediation material comprising at least one organism capable of degrading an energetic compound and a polymeric substance fueling the first bioremediation material during the degrading of the energetic compound. Additionally, the composition includes a second bioremediation material breaking the polymeric substance into smaller molecules over a degradation time period to provide the fueling of the first bioremediation material in a time-release manner.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: March 24, 2020
    Assignee: REMEDIATION PRODUCTS, INC.
    Inventor: Scott Noland
  • Patent number: 10434458
    Abstract: Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing an input feed stream through two swing adsorption systems as a purge stream to remove contaminants, such as water, from the respective adsorbent bed units. The wet purge product stream is passed to a solvent based gas treating system, which forms a wet hydrocarbon rich stream and a wet acid gas stream. Then, the wet hydrocarbon rich stream and the wet acid gas stream are passed through one of the respective swing adsorption systems to remove some of the moisture from the respective wet streams.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: October 8, 2019
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Robert D. Denton, Ananda K. Nagavarapu, Bruce T. Kelley, Robert A. Johnson, Bennett D. Marshall
  • Patent number: 10131557
    Abstract: There is described a process for treatment of a fluid comprising an oxidizable contaminant. The process comprises the step of contacting the wastewater with a combination of: (i) a sulfide, (ii) a complex of Fe(III) and a chelating agent, and (iii) an oxidant. It has been discovered that of treatment of a fluid containing an oxidizable contaminant employing iron(III)-chelates as the Fenton catalyst may be significantly improved by including a sulfide in the reaction scheme. As described herein, by employing sulfide ion, the present inventors have been able to: (i) increase the rate of iron recycling from minutes or hours to a few seconds, and (ii) destroy benzene in an oil and gas refinery (OGR) wastewater in less than one minute. It is believed that these findings in OGR wastewater can be extended to other fluids containing other oxidizable contaminants.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: November 20, 2018
    Assignee: TROJAN TECHNOLOGIES
    Inventors: Ali Safarzdeh-Amiri, John R. Walton, Michael Fagan
  • Patent number: 9981889
    Abstract: Methods for scavenging carbon disulfide (“CS2”) from hydrocarbon streams using treatment compositions comprising at least one CS2 scavenger and at least one phase transfer catalyst therein. The CS2 scavenger may comprise at least one polyamine with the general formula: H2N—(R1—NH)x—R2—(NH—R3)y—NH2 wherein R1, R2, R3 may be the same or different H, aryl or C1-C4 alkyl; and x and y may be integers from 0 to 10. A hydrocarbon product with a reduced concentration of CS2 therein.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: May 29, 2018
    Assignee: General Electric Company
    Inventors: Flavio Weissheimer, John Link
  • Patent number: 9656206
    Abstract: A combined desulfuration, denitration, and demercuration apparatus and method using a semi-dry process in a circulating fluidized bed. The apparatus comprises a flue (2) and a circulating fluidized bed reaction column (8) connected in sequence, the flue (2) being connected to a bottom inlet of the circulating fluidized bed reaction column (8). The flue (2) is further connected to an ozone generation apparatus (1). The ozone distributor (1) feeds ozone in the flue (2) and sends oxidized flue gas into the circulating fluidized bed reaction column (8), so that the SO2, high-valence NOx, and Hg2+ contained in the flue gas are removed through reactions with a Ca-based absorbent under the effect of atomized water in the reaction column (8).
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: May 23, 2017
    Assignees: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES, BEIJING ZSTC ENVIRONMENTAL ENGINEERING CO., LTD.
    Inventors: Tingyu Zhu, Wenqing Xu, Meng Ye, Ruizhuang Zhao
  • Patent number: 9580340
    Abstract: Certain exemplary embodiments can provide a system, machine, device, manufacture, circuit, composition, and/or user interface adapted for and/or resulting from, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise and/or relate to, in a treatment zone, reacting an oxygen-comprising gas, one or more selected ferric/ferrous chelates, one or more selected nitrates and/or nitrites, and/or anaerobic wastewater.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: February 28, 2017
    Assignee: Biosystems Consulting, Inc.
    Inventor: Henry Wilmore Cox, Jr.
  • Patent number: 9399590
    Abstract: Certain exemplary embodiments can provide a system, machine, device, manufacture, circuit, composition, and/or user interface adapted for and/or resulting from, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise and/or relate to, in a treatment zone, reacting an oxygen-comprising gas, one or more selected ferric/ferrous chelates, one or more selected nitrates and/or nitrites, and/or anaerobic wastewater.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: July 26, 2016
    Assignee: Biosystems Consulting, Inc.
    Inventor: Henry Wilmore Cox, Jr.
  • Patent number: 9393518
    Abstract: HCl and sulfur oxides are reduced by treating combustion gases with an aqueous copper compound referred to as copper-based chloride remediator (CBCR). The process is preferably implemented by identifying locations within a combustor for feeding the CBCR, determining the physical form and injection parameters for the CBCR and injecting the CBCR under conditions effective to reduce HCl and/or sulfur oxides. Effective temperatures for introducing the CBCRs can be from about 250° to 900° F. for HCl and up to about 2200° F. for sulfur oxides. Preferred CBCRs include copper and an ammonia moiety. One composition is copper diammonium diacetate, empirical formula of C2H7CuNO2. CBCR compositions are not sorbents and chemically convert HCl from a gaseous to a solid form.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: July 19, 2016
    Assignee: FUEL TECH, INC.
    Inventors: Christopher R. Smyrniotis, Kent W. Schulz, Emelito P. Rivera, Ian Saratovsky, Vasudeo S. Gavaskar
  • Patent number: 9393547
    Abstract: The present invention discloses an adsorbent material having the following formula: CuwZnxFeyAlz(OH)2(A)(y+z)/2·mH2O, wherein w+x+y+z=1; and 0.20?w?0.60; 0.20?x?0.60; 0.05?y?0.25; 0.05?z?0.25; 0.20?(y+z)?0.33; and 0.50?m?0.80; a process for producing the adsorbent material and its use for removing sulfur-containing matter from gaseous streams.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: July 19, 2016
    Assignee: King Saud University
    Inventors: Mohammed A. Othman, Waleed M. Zahid, Ahmed E. Abasaeed
  • Patent number: 9034527
    Abstract: One embodiment of the present invention is a unique fuel cell system. Another embodiment is a unique desulfurization system. Yet another embodiment is a method of operating a fuel cell system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for fuel cell systems and desulfurization systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: May 19, 2015
    Assignee: LG Fuel Cell Systems Inc.
    Inventor: John R. Budge
  • Patent number: 9028590
    Abstract: A process for the reduction of carbon dioxide and carbonyl sulfide from various types of gas emitting sources containing carbon dioxide and/or gas or liquid emitting sources containing carbonyl sulfide, using ion exchange resin.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 12, 2015
    Assignees: LANXESS Deutschland GmbH, LANXESS Sybron Chemicals, Inc.
    Inventors: Anthony P. Tirio, Rudolf Wagner
  • 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: 8992868
    Abstract: Dry processes, apparatus, compositions and systems are provided for reducing emissions of mercury and optionally sulfur oxides and/or HCl. In an embodiment the copper-based mercury remediation composition comprises a copper ammonium complex having an empirical formula of C2H7CuNO2 or any of the other materials described, which include compositions defined by the formula Cu(NH3)x(lower carboxylate)y, wherein the lower carboxylate is selected from the group consisting of formate, acetate and propionate, x is an integer from 0 to 4, y is an integer from 0 to 2, and x+y is equal to or greater than 1. Sulfur oxides and/or HCl can be additionally reduced by introduction of dolomite hydrate sorbent, and additional mercury remediation chemicals as manganese oxides can be employed. The treated gas stream is treated with a particulate removal device.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: March 31, 2015
    Assignee: Fuel Tech, Inc.
    Inventors: Christopher R. Smyrniotis, Kent W. Schulz, Emelito P. Rivera, Mingming Fang, Ian Saratovsky
  • Patent number: 8961912
    Abstract: Methods for reducing the acidic gas content of effluent gas streams are disclosed. The methods generally involve reducing the acidic gas content of combustion gases passing through a duct by injecting hydrated lime or pulverized quicklime into the duct by use of a shrouded injector which reduces the incidence of occlusion of the injector.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: February 24, 2015
    Assignee: Mississippi Lime Company
    Inventors: William S. Allebach, Gerald K. Bequette, Randy J. Griffard
  • Patent number: 8951491
    Abstract: The preparation of nano-oxide coated adsorbent, which is useful for treatment of toxic gases, by coating of composite materials containing hydrotalcite over ceramic monolithic substrates. Oxides and salts of metals are reacted in a known manner to prepare hydrotalcites or mixed metal layered hydroxides such as Mg—Al, Ca—Al, Zn—Al, Zn—Cr type possessing positive layer charge, from which a stable gel is prepared by adding swellable clay, e.g., montmorillonite etc. in different hydrotalcite:clay ratio in an aqueous medium and homogenizing the same with high speed homogenizer and ultrasonicator in a high intensity ultrasonic processor. The gel is dip-coated over cordierite/mulite honey-comb monolithic supports. The dip-coated monoliths are dried and calcined to develop the alumino-silicate supported nano-oxide coats over honey-comb ceramic substrates for carrying out adsorption of H2S and SO2 gas in a He flow in various flow rates at 400 to 1000° C. temperature in a cylindrical quartz tube.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: February 10, 2015
    Assignee: Council of Scientific & Industrial Research
    Inventors: Mridusmita Mishra, Rajib Lochan Goswamee
  • Publication number: 20140370578
    Abstract: A process of removing SO2 from a flue gas with a trickling filter using modified ceramsite packing is described. The biological flue gas desulfurization process includes: feeding the flue gas containing sulfur dioxide through the column bottom into the biomembrane trickling filter at certain temperature, contacting with the modified ceramsite biomembrane packing and purifying, which purified flue gas is discharged via the column top; and spraying the nutrient fluid rich in high concentration of the desulfurization strain through the top to the modified ceramsite biomembrane packing, thereby the sulfur-bearing pollution source in the flue gas is degraded, so as to discharge a purified flue gas satisfying the environmental requirements.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 18, 2014
    Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF NANJING CHEMICAL INDUSTRIAL GROUP
    Inventors: Aixiang HAO, Songbai Mao, Jing Kong
  • Patent number: 8906333
    Abstract: An air quality control system (AQCS) useful for treating flue gas, such as flue gas produced by a fossil fuel fired boiler, is described. In addition to flue gas treatment, the AQCS provides for air preheater flue gas outlet flue gas temperature reduction and air preheater corrosion prevention while reducing capital costs, increasing reliability and increasing operating flexibility with regard to fuel selection.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: December 9, 2014
    Assignee: ALSTOM Technology Ltd
    Inventor: Per-Erik Albert Appelo
  • Patent number: 8899011
    Abstract: Methods of one or more embodiments include delivering hydrogen sulphide-containing exhaust gases to a current generation device where the gases are burnt, preferably with air being supplied. The energy released during combustion is employed at least partially for current generation. One or more embodiments also include an apparatus for current generation in which supplied hydrogen sulphide-containing exhaust gases are burnt, preferably with air being supplied.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: December 2, 2014
    Assignee: Knauf Gips KG
    Inventor: Rolf Hueller
  • Patent number: 8889089
    Abstract: A process for a reduction in the amount of sulphur compounds, hydrogen cyanide, formic acid and formic acid derivatives in synthesis gas comprising these compounds, the process comprising contacting the synthesis gas with a sulphur absorbent comprising material and thereafter with a catalyst comprising one or more metals selected from the group consisting of silver, gold, copper, palladium, platinum and their mixtures and supported on a carrier comprising at least one of the oxides of scandium, yttrium, lanthanum, cerium, titanium, zirconium, aluminum, zinc, chromium and molybdenum.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: November 18, 2014
    Assignee: Haldor Topsoe A/S
    Inventors: Kim Aasberg-Petersen, Ib Dybkjaer, Poul Erik Højlund Nielsen
  • Patent number: 8877152
    Abstract: Methods and systems for the removal of SO2 from waste combustion flue gas are described herein. One such system for removing SO2 from waste combustion flue gas containing SO2 uses a semi-dry desulfurization system for contacting the flue gas with a solvent moistened absorption material. Thereafter, a recirculated water quench is used for contacting the flue gas with recirculated water at a relatively low pH, followed by a condenser used for contacting the flue gas with a water spray. Additionally, a NaOH supply for supplying NaOH to the condenser and an oxidizing catalyst supply for supplying an oxidizing catalyst to the condenser, are likewise used to produce cleaned flue gas for release to the atmosphere.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: November 4, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Daniel Per Niklas Persson, Mati Maripuu, Marja Swahn
  • Patent number: 8734747
    Abstract: A method for treating exhaust gas is provided, which includes measuring SO3 concentration in the exhaust gas which contains at least SO2 and SO3 by using an SO3 gas analyzer; injecting fine particles into the exhaust gas after the step of measuring; cooling the exhaust gas after the step of injection, by recovering heat from the exhaust gas; collecting fly ash from the cooled exhaust gas; and removing at least SO2 from the exhaust gas after the step of collecting by absorbing the SO2 with an absorbing solution. In addition, an apparatus for treating exhaust gas is provided, which includes an SO3 gas analyzer; a fine particles injector; a heat exchanger; an electrostatic precipitator; an absorption tower; and a fine particle feed controller.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: May 27, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Satoru Sugita
  • Patent number: 8728425
    Abstract: A method for performing an energy efficient desulphurization and decarbonization of a flue gas comprising sulphur oxides and carbon dioxide includes (a) starting a reaction between an electropositive metal and the sulphur oxides and the carbon dioxide of said flue gas; (b) reducing the sulphur oxides and the carbon dioxide of said flue gas simultaneously in an exothermic reaction with an electropositive metal and thereby generating reduced gaseous carbon products and solid reaction products while cooling; (c) extracting the solid reaction products of the reducing step (a) in a solvent to generate a first suspension comprising suspended carbon containing reaction products and sulphur containing reaction products; (d) oxidizing the first suspension obtained in step (b) to generate a second suspension comprising suspended carbon containing reaction products and oxidized sulphur containing reaction products; and (e) separating the oxidized sulphur containing reaction products from the suspended carbon containing
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: May 20, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Günter Schmid, Dan Taroata, Manfred Baldauf, Elena Arvanitis, Frank Walachowicz
  • Patent number: 8715600
    Abstract: A circulating dry scrubber flue gas desulfurization system is disclosed. Hydrated lime is injected into the flue gas upstream of the CDS vessel. The flue gas then passes through a baghouse, where solids are captured. At least a portion of the solids are recycled. The recycle path runs from the baghouse to a splitter, where the solids are divided between the injection points. No distribution box is needed, which permits lowering the height and/or restructuring the location of many components of the system, reducing costs as well as improving or maintaining removal of combustion byproducts from the flue gas.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: May 6, 2014
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventor: Jeb W Gayheart
  • Patent number: 8703084
    Abstract: A method and apparatus for eliminating COS and/or CS2 from a hydrocarbon-containing feed stream, and further eliminating H2S from such feed stream or converting all sulfur species in such feed stream to H2S and SO2 to allow for easy subsequent conversion of such H2S and SO2 to elemental sulfur in a Claus reaction. The method comprises: (i) injecting water so that the feed stream contains greater than 10 vol % (water equivalent); (ii) passing the feed stream through catalyst means which hydrogenates COS and/or CS2 to H2S; (iii) injecting O2 so that the stoichiometric ratio of O2 to H2S is at least 0.5:1.0; (iv) passing the stream though a reaction zone having oxidation catalyst means which oxidizes H2S to elemental sulfur or SO2 (depending on the amount of oxygen and water added); where the temperature of the reaction zone is above the elemental sulfur dew point.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: April 22, 2014
    Assignee: Archon Technologies Ltd.
    Inventors: Conrad Ayasse, Ahmed M. Shahin, Alan Ayasse
  • Patent number: 8703081
    Abstract: Sorbent compositions containing halogen and calcium are added to coal to mitigate the release of sulfur and/or other harmful elements, including mercury, into the environment during combustion of coal containing natural levels of mercury.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: April 22, 2014
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Patent number: 8696792
    Abstract: A fluidized reactor system for removing impurities from a gas and an associated process are provided. The system includes a fluidized absorber for contacting a feed gas with a sorbent stream to reduce the impurity content of the feed gas; a fluidized solids regenerator for contacting an impurity loaded sorbent stream with a regeneration gas to reduce the impurity content of the sorbent stream; a first non-mechanical gas seal forming solids transfer device adapted to receive an impurity loaded sorbent stream from the absorber and transport the impurity loaded sorbent stream to the regenerator at a controllable flow rate in response to an aeration gas; and a second non-mechanical gas seal forming solids transfer device adapted to receive a sorbent stream of reduced impurity content from the regenerator and transfer the sorbent stream of reduced impurity content to the absorber without changing the flow rate of the sorbent stream.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: April 15, 2014
    Assignee: Research Triangle Institute
    Inventors: Gunnar Henningsen, Teddy Merrill Knowlton, John George Findlay, Jerry Neal Schlather, Brian S. Turk
  • Patent number: 8685353
    Abstract: Provided are improved exhaust gas cleaning systems and methods for treating exhaust gas from a combustion source that include a hydrogen generation system, a regenerable sulfur oxides trap, and a regenerable nitrogen storage reduction (NSR) catalyst trap. The improved exhaust gas cleaning systems and methods allow for the sulfur released from the sulfur trap to pass through the nitrogen oxide trap with no or little poisoning of NOx storage and reduction sites, which significantly improves NSR catalyst trap lifetime and performance to meet future emissions standards. The disclosed exhaust gas cleaning systems are suitable for use in internal combustion engines (e.g., diesel, gasoline, CNG) which operate with lean air/fuel ratios over most of the operating period.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: April 1, 2014
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: El-Mekki El-Malki, Walter Weissman, Paul James Polini
  • Patent number: 8668894
    Abstract: The present invention relates to a method for processing a sulfur-containing gas and a hydrogenation catalyst used therefor. The method comprises introducing the sulfur-containing gas into the tail gas hydrogenation unit of a sulfur recovery device, processing it with the hydrogenation catalyst of the present invention, and absorbing the hydrogenated tail gas with a solvent. The hydrogenation catalyst comprises from 0.5 to 3 wt. % of an active component nickel oxide, from 1 to 4 wt. % of an active component cobalt oxide, from 8 to 20 wt. % of an active component molybdenum oxide or tungsten oxide, from 1 to 5 wt. % of a deoxidation auxiliary agent, from 10 to 40 wt. % of TiO2, the balance being ?-Al2O3, based on the weight of the catalyst.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: March 11, 2014
    Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, Sinopec
    Inventors: Aihua Liu, Yiling Zhang, Xingzhong Xu, Jianli Liu, Weidong Tao, Jinshan Xu
  • Patent number: 8658555
    Abstract: Compositions and methods useful for removing toxic industrial compounds from air are disclosed, wherein said composition comprises a mixture of hydrous metal oxide and graphite oxide. In a most preferred embodiment the composition comprises a mixture of zirconium hydroxide and graphene oxide.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: February 25, 2014
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Teresa J. Bandosz, Mykola Seredych, Gregory W. Peterson, Christopher J. Karwacki
  • Publication number: 20140030178
    Abstract: The disclosure provides an improved means of controlling mercury emissions from coal-fired boiler applications. Specifically, the disclosure comprises a static mixing device placed in the flue gas stream. The static mixing device can enhance dispersion of injected sorbents in the flue gas, resulting in improved mercury capture at a lower sorbent injection rate.
    Type: Application
    Filed: July 25, 2013
    Publication date: January 30, 2014
    Applicant: ADA-ES, Inc.
    Inventor: Cameron E. Martin
  • Patent number: 8609926
    Abstract: Certain exemplary embodiments can provide a system, machine, device, manufacture, circuit, composition, and/or user interface adapted for and/or resulting from, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise and/or relate to, in a treatment zone, reacting an oxygen-comprising gas, one or more selected ferric/ferrous chelates, one or more selected nitrates and/or nitrites, and/or anaerobic wastewater.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: December 17, 2013
    Inventor: Henry Wilmore Cox, Jr.
  • Publication number: 20130302235
    Abstract: A sulfur dioxide reducing composition for reducing the headspace concentration of sulfur dioxide in fruit packages includes a sulfur dioxide absorber having pores sized to retain sulfur dioxide therein and a clinching absorber on the sulfur dioxide absorber with which the sulfur dioxide reacts irreversibly with the sulfur dioxide.
    Type: Application
    Filed: March 14, 2013
    Publication date: November 14, 2013
    Inventors: George E. McKedy, Thomas H. Powers
  • Publication number: 20130294992
    Abstract: An air quality control system (AQCS) useful for processing a gas stream, such as a flue gas stream emitted from a fossil fuel fired boiler, for at least partial removal of acidic and like pollutants therefrom. The air quality control system includes a CDS reactor useful using a reducing agent slurry.
    Type: Application
    Filed: March 27, 2013
    Publication date: November 7, 2013
    Applicant: ALSTOM Technology Ltd
    Inventor: Mark Albert Fiedler
  • Patent number: 8568679
    Abstract: Disclosed is a process for the removal of sulfur from a fuel gas stream that additionally contains carbon dioxide and a light olefin as well as an organic sulfur compound. The process includes hydrotreating the fuel gas stream followed by a catalytic reduction of the resulting hydrotreated fuel gas to remove the carbonyl sulfide contained therein that is yielded in the hydrotreating step as a result of the equilibrium reaction of hydrogen disulfide with carbon dioxide to yield carbonyl sulfide and water.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: October 29, 2013
    Assignee: Shell Oil Company
    Inventor: Gary Lee Ripperger
  • Patent number: 8562930
    Abstract: Hazardous process gases are heated to auto ignition temperatures by rods and cylinders in a heating chamber. The heated gases and oxygen mix in a combustion chamber, and the gases ignite and combust. Air is introduced to cool the hot combustion products. Particles are separated from the cooled gases. Pure non hazardous gases and air are exhausted.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: October 22, 2013
    Assignee: Innovative Engineering Solutions, Inc.
    Inventor: Samir S. Shiban
  • Patent number: 8545778
    Abstract: Sorbent compositions containing halogen and calcium are added to coal to mitigate the release of sulfur and/or other harmful elements, including mercury, into the environment during combustion of coal containing natural levels of mercury.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: October 1, 2013
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Patent number: 8545777
    Abstract: The method of making an acid-absorbing biosolid composition provides a method for the use of recycled materials to produce an acid-absorbing composition that may then be recycled as a fertilizer after absorbing the acid. The method includes the steps of: collecting sewage sludge; drying the sewage sludge to remove water therefrom to form dried sludge; adding hydrochloric acid to the dried sludge to form a liquid intermediary product; heating the liquid intermediary product to produce a dried porous biomass; and mixing inorganic waste material with the dried porous biomass to produce the acid-absorbing biosolid composition. Thereafter, the acid-absorbing biosolid composition may be placed in a gas flow to absorb an acidic component therefrom; and then recycled for use as fertilizer following absorption of the acidic component from the gas flow.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: October 1, 2013
    Inventor: Abdullah A. Al-Yateem
  • Patent number: 8535631
    Abstract: A method for the catalytic removal of sulphur dioxide and carbon dioxide from waste gases in a reactor charged with an activated carbon catalyst, includes saturating the activated carbon with SO2, saturating or partially saturating waste gases with water, introducing the waste gases with water, introducing the exhaust gases into the reactor catal ticall convertin the SO2 into H2SO4 and CO2 into C and O2 and into sulphur-carbon compounds on the same catalyst, washing out the catalyst and discharging the H2SO4 as a liquid and the C as a solid and/or bound to sulphur compounds.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: September 17, 2013
    Assignee: CPPE Carbon Process & Plant Engineering S.A.
    Inventor: Alain Strickroth
  • Patent number: 8535630
    Abstract: The present invention relates to a method for combined SO2 and CO2 removal from flue gas, which includes removing both CO2 and SO2 in a primary fractionation column and two polishing columns, the method comprising: a) hot flue as pretreatment, including flue gas SO3 removal by dry sorbent injection; b) compressing the treated hot flue gas by a multi-stage compressor; c) separation of CO2, SO2 and non-condensable gases; d) subjecting the CO2 and SO2 to separate polishing columns; and e) combining streams from the primary fractionation column and the two polishing columns for power recovery.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: September 17, 2013
    Assignee: Bechtel Power Corporation
    Inventors: Harvey Wen, Charles L. Kimtantas
  • Publication number: 20130224094
    Abstract: Oxidative and reductive methods are described for the cost-effective destruction of an ammonia-bearing gas stream, potentially containing minor but significant quantities of hydrogen sulfide (H2S), in a conventional Claus sulfur recovery tail gas treating unit, using controlled rates and compositions of combustion gases in order to obtain the temperatures necessary for the desired destruction of unwanted combustibles.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 29, 2013
    Applicant: WORLEYPARSONS GROUP, INC.
    Inventor: WorleyParsons Group, Inc.
  • Patent number: 8518356
    Abstract: A feed gas comprising CO2, H2S and H2 is treated to produce an H2-enriched product and an H2S-lean, CO2 product. The feed gas is separated to provide the H2-enriched product and a stream of sour gas. The stream of sour gas is divided into two parts, one of which is processed in an H2S removal system to form one or more streams of sweetened gas, and the other of which bypasses the H2S removal system, the stream(s) of sweetened gas and the sour gas bypassing the H2S removal system then being recombined to form the H2S-lean, CO2 product gas. The division of the sour gas between being sent to and bypassing the H2S removal system is adjusted responsive to changes in the H2S content of the sour gas, so as to dampen or cancel the effects of said changes on the H2S content of the H2S-lean, CO2 product gas.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: August 27, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Charles Linford Schaffer, Andrew David Wright, Kevin Boyle Fogash, Jeffrey William Kloosterman, Jeffrey Raymond Hufton
  • Patent number: 8518353
    Abstract: Circulating dry scrubbing (CDS) systems and methods utilizes a particle classification unit operation to separate unreacted sorbent (such as lime, limestone, or sodium-based sorbent) such that a reactive fraction of the cut stream may be selectively recovered to a flue gas scrubbing system. This reduces the amount of fresh sorbent that must be supplied for pollutant removal.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: August 27, 2013
    Assignee: Babcock Power Development LLC
    Inventors: James K. Neathery, Angelos Kokkinos, James D. Dougherty, Matthew Quitadamo
  • Patent number: 8506916
    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: July 27, 2012
    Date of Patent: August 13, 2013
    Assignee: C-Quest Technologies LLC
    Inventor: Douglas C. Comrie
  • Patent number: 8501135
    Abstract: A method of reducing sulfur compounds from an incoming gas stream, comprising flowing the gas stream over a hydrolysis catalyst to convert COS and CS2 to H2S and reduce SO2 to elemental sulfur to form an effluent stream; providing an acidic gas removal unit comprising an absorbent; flowing said effluent stream over said absorbent to produce a stream free of acidic gases; applying an acidic-gas desorption mode to said acidic-gas rich absorbent to produce an acidic gas stream; introducing oxygen to said acidic gas-rich stream; providing a direct oxidation vessel containing catalyst suitable for catalyzing the oxidation of the H2S to sulfur wherein the temperature of the vessel is at or above the sulfur dew point at the reaction pressure; and flowing said acidic gas-rich stream over said catalyst to produce a processed stream having a reduced level of sulfur compounds.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: August 6, 2013
    Assignee: Archon Technologies Ltd.
    Inventors: Alan Ayasse, Ahmed M. Shahin, Conrad Ayasse
  • Patent number: 8501128
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: August 6, 2013
    Inventor: Douglas C. Comrie
  • Patent number: 8465712
    Abstract: A method and system for desulfurization comprising first and second metal oxides; a walled enclosure having an inlet and an exhaust for the passage of gas to be treated; the first and second metal oxide being combinable with hydrogen sulfide to produce a reaction comprising a sulfide and water; the first metal oxide forming a first layer and the second metal oxide forming a second layer within the walled surroundings; the first and second layers being positioned so the first layer removes the bulk amount of the hydrogen sulfide from the treated gas prior to passage through the second layer, and the second layer removes substantially all of the remaining hydrogen sulfide from the treated gas; the first metal oxide producing a stoichiometrical capacity in excess of 500 mg sulfur/gram; the second metal oxide reacts with the hydrogen sulfide more favorably but has a stoichometrical capacity which is less than the first reactant; whereby the optimal amount by weight of the first and second metal oxides is achieved
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: June 18, 2013
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Charles Rong, Rongzhong Jiang, Deryn Chu
  • Publication number: 20130129591
    Abstract: The present invention relates to a method for combined SO2 and CO2 removal from flue gas, which includes removing both CO2 and SO2 in a primary fractionation column and two polishing columns, the method comprising: a) hot flue as pretreatment, including flue gas SO3 removal by dry sorbent injection; b) compressing the treated hot flue gas by a multi-stage compressor; c) separation of CO2, SO2 and non-condensable gases; d) subjecting the CO2 and SO2 to separate polishing columns; and e) combining streams from the primary fractionation column and the two polishing columns for power recovery.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 23, 2013
    Applicant: Bechtel Power Corporation
    Inventor: Bechtel Power Corporation
  • Patent number: 8353698
    Abstract: A coaxial injection device for injecting and dispersing reagents into a reactor, including an exterior duct for high-velocity gas injection; an outer-middle injector with at least one nozzle for liquid injection; an inner-middle duct for low-velocity gas injection; and an interior injector with nozzle for liquid injection; wherein, the exterior duct is formed by the internal wall of an insert and the external wall of the outer-middle injector; and is located externally to and circumferentially surrounds all other injectors and ducts; the outer-middle injector is formed by two concentric cylinders with end plate and injector nozzles; the inner-middle duct is formed by interior wall of the outer-middle injector and the exterior wall of the interior injector; the interior injector is formed by a cylinder with an endplate, the endplate having a nozzle; thereby ensuring the mixing and dispersion of the liquids and gases into the reactor to increase reaction homogeneity, reaction efficiency, reactor efficiency and
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: January 15, 2013
    Assignee: Nalco Mobotec, Inc.
    Inventor: Goran Moberg
  • 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: 8323603
    Abstract: A method for producing a substantially desulfurized a hydrocarbon fuel stream at temperatures less than 100° C. The method includes providing a nondesulfurized fuel cell hydrocarbon fuel stream that may include water and passing the fuel stream sequentially through a zeolite Y adsorbent and a selective sulfur adsorbent. The zeolite Y adsorbent may be exchanged with copper ions. The method produces a substantially desulfurized hydrocarbon fuel stream containing less than 50 ppb sulfur.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: December 4, 2012
    Assignee: Sud-Chemie Inc.
    Inventors: Chandra C Ratnasamy, Jon P. Wagner, R. Steve Spivey, Hans-Georg Anfang