Means Contacting Exhaust Gas With Liquid Patents (Class 110/215)
  • Patent number: 10557378
    Abstract: A system for regulating condensation of a flue gas in a steam generator is provided. The system includes a temperature controller and a flue gas analyzer. The temperature controller is configured to control a temperature of a component of the steam generator, the component being in heating-contact with the flue gas. The flue gas analyzer is configured to communicate with the temperature controller and to obtain a measurement of an amount of an acid-forming compound in the flue gas. The temperature controller adjusts the temperature of the component based at least in part on the measurement such that the temperature of the component is above an acid dew point of the flue gas when the component is in heating-contact with the flue gas.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: February 11, 2020
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Felix Guethe, John Martin Nilsson, Stefano Bernero, Mariah Couzzi Carneiro
  • Patent number: 10537828
    Abstract: A method for preventing fouling of a demister is disclosed. A process fluid is provided into a vessel. A gas is provided to a gas inlet of the vessel. The gas comprises a component that desublimates, crystallizes, solidifies, reacts, or a combination thereof, in the process fluid, forming a first solid. The gas is passed through the process fluid, the component of the gas forming the first solid, resulting in a component-depleted gas. The component-depleted gas is passed out of the process fluid, causing splashing or spurting of the process fluid and the first solid. The diverter section is provided between the demister and the gas inlet, the diverter section comprising a physical obstruction preventing the process fluid and the first solid from splashing or spurting onto the demister. In this manner, fouling of the demister is prevented.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: January 21, 2020
    Assignee: Sustainable Energy Solutions, LLC
    Inventors: Larry Baxter, Andrew Baxter, Kyler Stitt, Aaron Sayre, Stephanie Burt, David Frankman, Nathan Davis
  • Patent number: 10124290
    Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of peracetic acid is disclosed. The peracetic acid is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses peracetic acid in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: November 13, 2018
    Assignee: ECOLAB USA INC.
    Inventors: Nicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
  • Patent number: 9988287
    Abstract: A process produces salt by way of strong brine concentration after sea water desalination by using a two-way circulation method and bromine extraction. The process includes the following steps: A, preparing fresh water and strong brine from sea water in a high-pressure reverse osmosis unit by using a reverse osmosis method, wherein the concentration of the prepared strong brine is 70000 to 80000 PPM; and B, performing fresh and concentrated separation on the strong brine with the concentration of 70000 to 80000 PPM in a two-way circulation manner by using a concentration difference method till the strong brine is crystallized.
    Type: Grant
    Filed: January 4, 2015
    Date of Patent: June 5, 2018
    Assignee: WEIFANG NORTHSEA OASIS SOLAR POWERED TECHNOLOGY CO., LTD.
    Inventor: Panmin Cai
  • Patent number: 9981220
    Abstract: A fossil fuel fired power plant exhaust gas clean-up and recovery system is provided to remove detrimental compounds/elements from the exhaust gas emitting from the power plant to protect the environment and to recover useful products from the cleaning solution. This is accomplished by directing the exhaust gas from the fossil fuel fired power plant through a single wet scrubber having a cleaning solution of a predetermined pH. The cleaning solution is composed of calcium carbonate and water. A recovery process is attached thereto to reclaim calcium carbonate, calcium sulfate, and carbon dioxide for reuse in the process and/or for commercial use.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: May 29, 2018
    Assignee: MILLENIUM SYNTHFUELS CORPORATION
    Inventors: Lai O. Kuku, Melvin Mathew, Michael P. Woudenberg
  • Patent number: 9975061
    Abstract: Disclosed herein are methods of concentrating liquid waste streams including methods comprising drawing a fluidized gas liquid mixture containing water from a mixing cavity into a multi-stage cyclonic separator comprising a first cyclonic separation chamber and a second cyclonic separation chamber in fluid communication with the first cyclonic separation chamber; draining a liquid discharge from the cyclonic separator into a liquid sump; and supplying a liquid contained in the sump to the mixing cavity. Related methods comprise steps such as supplying a liquid waste feed to a concentrator having a mixing cavity and a first cyclonic separation chamber and feeding a supply gas to the mixing cavity. Evaporative concentrators configured to practice these methods are also disclosed.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: May 22, 2018
    Assignee: Aptim Intellectual Property Holdings, LLC
    Inventors: Russell M. Keckler, III, Daniel K. DeArment
  • Patent number: 9901876
    Abstract: Reclaiming useful products for commercial use and/or to be reused in an exhaust gas clean-up system. This is accomplished by subjecting the power plant exhaust gas to the various cleaning fluids followed by reclaiming the useful products from the exiting cleaning liquid. As the exhaust gas passes through a medium of water and calcium carbonate in a wet scrubber, the exiting cleaning fluid contains various calcium salts. Likewise, as the exhaust gas passes through a medium of calcium hydroxide and water other calcium salts are produced. By passing these respective calcium salts through solid-liquid centrifuge separators and other separating stirred tanks, various useful products are reclaimed and reused in the process or commercially sold. Some useful products are carbon dioxide, calcium sulfate, calcium carbonate, and mercuric salts.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: February 27, 2018
    Assignee: Millenium SynthFuels Corporation
    Inventors: Lai O. Kuku, Melvin Mathew, Michael P. Woudenberg
  • Patent number: 9868086
    Abstract: A fossil fuel fired power plant exhaust gas clean-up system is provided to remove detrimental compounds/elements from the exhaust gas emitting from the power plant to protect the environment. This is accomplished primarily by directing the exhaust gas from a fossil fuel fired power plant through both a reaction chamber containing a chemically produced compound and a catalytic converter. The final exhaust gas can now be safely exhausted to the atmosphere and only contains nitrogen gas, oxygen, water and a trace amount of carbon dioxide.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: January 16, 2018
    Assignee: MILLENIUM SYNTHFUELS CORPORATION
    Inventors: Lai O. Kuku, Andre M. Fuentes
  • Patent number: 9833739
    Abstract: A fossil fuel fired power plant exhaust gas clean-up system is provided to remove detrimental compounds/elements from the exhaust gas emitting from the power plant to protect the environment. This is accomplished primarily by directing the exhaust gas from a fossil fuel fired power plant through both a reaction chamber containing a chemically produced compound and a catalytic converter. The final exhaust gas can now be safely exhausted to the atmosphere and only contains nitrogen gas, oxygen, water and a trace amount of carbon dioxide.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: December 5, 2017
    Assignee: MILLENIUM SYNTHFUELS CORPORATION
    Inventors: Lai O. Kuku, Melvin Mathew, Michael P. Woudenberg
  • Patent number: 9751026
    Abstract: Disclosed are methods, systems, and apparatuses for purifying liquids. One illustrative method includes generating an aerosol from a contaminated liquid. The illustrative method also includes generating a vapor from the aerosol by applying a negative pressure to the aerosol. The illustrative method further includes separating at least one type of contaminant particle from the vapor and converting the vapor into a liquid.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: September 5, 2017
    Assignee: SeaChange Technologies, LLC
    Inventor: Dipak Mahato
  • Patent number: 9744575
    Abstract: A method for the treatment of waste by plasma treating the waste to destroy the hazardous organic components and to yield a slag and an off-gas by plasma treating the waste in the presence of added oxygen gas in a transferred-arc plasma treatment unit, followed by directing off-gas from the plasma treatment unit to a thermal oxidizer combustion chamber.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: August 29, 2017
    Assignee: Tectronics (International) Limited
    Inventors: David Deegan, Fan Zhang
  • Patent number: 9739708
    Abstract: Described herein is a spectroscopic system and method for measuring and monitoring the chemical composition and/or impurity content of a sample or sample stream using absorption light spectroscopy. Specifically, in certain embodiments, this invention relates to the use of sample pressure variation to alter the magnitude of the absorption spectrum (e.g., wavelength-dependent signal) received for the sample, thereby obviating the need for a reference or ‘zero’ sample. Rather than use a reference or ‘zero’ sample, embodiments described herein obtain a spectrum/signal from a sample-containing cell at both a first pressure and a second (different) pressure.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: August 22, 2017
    Assignees: MKS Instruments, Inc., Pason Systems Corp.
    Inventor: Vidi A. Saptari
  • Patent number: 9541289
    Abstract: Provided is a gas cooler for cooling a produced gas on a side from which the produced gas exits, the produced gas being produced by partially oxidizing and gasifying a carbon-containing fuel in a gasification furnace inside a pressure vessel. A distance (SL) between tubes of a tube bundle of a heat exchanger provided inside the gas cooler is set such that the tubes are in contact with each other or adjacent to each other in a gas-flow direction of the produced gas. Since the tubes are in contact with each other or adjacent to each other, a particle flowing with the gas flow is only deposited as a deposited particle in a concave portion between the tubes, whereby the decrease in heat exchange efficiency caused by particle deposition can be suppressed.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: January 10, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yasunari Shibata, Osamu Shinada
  • Patent number: 9440184
    Abstract: The present invention relates to an apparatus for removing air contaminants, which adsorbs dust and harmful substances contained in the air contaminants using an absorbing unit connected to an inlet pipe inserted in a tank.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: September 13, 2016
    Inventor: Jong In Kim
  • Patent number: 9366479
    Abstract: An exhaust gas plume mitigation process and system includes either mixing secondary heat into a moisture rich exhaust gas stream, or diverting a moisture rich exhaust gas stream into a primary exhaust stack having hot exhaust gases flowing therethrough. Moisture rich exhaust gas from a liquid concentrator may be diverted into a high temperature exhaust stack of an engine, a generator, or a flare. The high temperature exhaust gases from the engine, the generator, or the flare raise the temperature of the moisture rich exhaust gas from the concentrator. The high temperature exhaust gases from the engine, the generator, or the flare are also lower in moisture content, so that the moisture rich exhaust gas from the concentrator is diluted by the drier high temperature exhaust gas. As a result, the mixed gas is less likely to develop a moisture plume upon exit to the atmosphere.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: June 14, 2016
    Assignee: HEARTLAND TECHNOLOGY PARTNERS LLC
    Inventors: Bernard F. Duesel, Jr., Michael J. Rutsch, Craig Clerkin
  • Patent number: 9334172
    Abstract: In a method for recovering volatile components from a solid material, a liquid phase is mechanically removed from the solid material. Subsequently, the solid material is dried by exposing the solid material to superheated steam circulating in a closed circuit. From the closed circuit excess steam that contains volatile components given off by the solid material is removed. The volatile components are separated from the excess steam by condensing the excess steam to a condensed phase and the volatile components are from the condensed phase by adding suitable ions to the condensed phase to crystallize the volatile components.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: May 10, 2016
    Assignees: Fraunhofer-Gesellschaft zur Föderung der angewandten Forschung e. V., Universität Stuttgart
    Inventors: Alejandra Campos, Siegfried Egner, Alexander Lohner, Sukhanes Laopeamthong, Maria Soledad Stoll
  • Patent number: 9109172
    Abstract: A low-temperature gasification system comprising a horizontally oriented gasifier is provided that optimizes the extraction of gaseous molecules from carbonaceous feedstock while minimizing waste heat. The system comprises a plurality of integrated subsystems that work together to convert municipal solid waste (MSW) into electricity. The subsystems comprised by the low-temperature gasification system are: a Municipal Solid Waste Handling System; a Plastics Handling System; a Horizontally Oriented Gasifier with Lateral Transfer Units System; a Gas Reformulating System; a Heat Recycling System; a Gas Conditioning System; a Residue Conditioning System; a Gas Homogenization System and a Control System.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: August 18, 2015
    Assignee: PLASCO ENERGY GROUP INC.
    Inventors: Andreas Tsangaris, Kenneth Craig Campbell, Douglas Michael Feasby, Thomas Edward Wagler, Alisdair Alan McLean, Scott Douglas Basham, Mao Pei Cui, Zhiyuan Shen, Ashish Chotaliya, Nipun Soni, Geoffrey Dobbs, Pascale Bonnie Marceau, Xiaoping Zou
  • Publication number: 20150107497
    Abstract: A system and for incinerating solid waste material that generates energy and minimal emissions. The incinerator system of the present disclosure is modular and may be configured to fit within a desired location. The system accepts raw solid material and processes, dries and ignites the waste material in an, optionally automated process.
    Type: Application
    Filed: October 21, 2014
    Publication date: April 23, 2015
    Inventor: Anthony Hughey
  • Publication number: 20150013300
    Abstract: A boiler system having a series of boilers. Each boiler includes a shell having an upstream end, a downstream end, and a hollow interior. The boilers also have an oxidizer inlet entering the hollow interior adjacent the upstream end of the shell and a fuel nozzle positioned adjacent the upstream end of the shell for introducing fuel into the hollow interior of the shell. Each boiler includes a flue duct connected to the shell adjacent the downstream end for transporting flue gas from the hollow interior. Oxygen is delivered to the oxidizer inlet of the first boiler in the series. Flue gas from the immediately preceding boiler in the series is delivered through the oxidizer inlet of each boiler subsequent to the first boiler in the series.
    Type: Application
    Filed: June 3, 2014
    Publication date: January 15, 2015
    Applicant: Washington University
    Inventors: Richard L. Axelbaum, Benjamin M. Kumfer, Fei Xia, Akshay Gopan, Bhupesh Dhungel
  • Publication number: 20140305872
    Abstract: A system adapted to separate a natural gas feed stream into a sweetened gas stream and at least one gaseous waste stream, and to discharge, recover or destroy the at least one gaseous waste stream. The system includes an acid gas separation subsystem adapted to separate the natural gas feed stream into the sweetened gas stream and a first portion of the at least one gaseous waste stream, a destruction subsystem adapted to incinerate the first portion of the at least one gaseous waste stream to form a flue gas, and a scrubber reactor subsystem adapted to receive a water stream and/or an oxygen containing air stream, and to remove at least one portion of the flue gas using the water stream to form a vent gas stream and a wastewater stream, wherein the vent gas is exhausted to the atmosphere.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventor: Richard Paul Posa
  • Publication number: 20140309475
    Abstract: A method and an apparatus for disposing wastes comprising the steps of conducting a hydrothermal decomposition reaction of the wastes, separating the products into a solid fuel and waste water, combusting the solid fuel, scrubbing the combustion gas, generating steam using the heat generated by the combustion, and purifying the waste water, exhibit a high energy-efficiency, while exhibiting a high removal rate of the pollutants generated during the combustion.
    Type: Application
    Filed: November 18, 2013
    Publication date: October 16, 2014
    Inventors: Robert Van Naarden, Marco Bonilla, Hans Jasper, Robert Jasper, Kuni Yoshikawa, Toshifumi Yamada, Matthew Song
  • Patent number: 8845986
    Abstract: A flue gas additive is provided that includes both a nitrogenous component to reduce gas phase nitrogen oxides and a halogen-containing component to oxidize gas phase elemental mercury.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: September 30, 2014
    Assignee: ADA-ES, Inc.
    Inventors: Constance Senior, Gregory M. Filippelli, Cynthia Jean Bustard, Michael D. Durham, William J. Morris, Sharon M. Sjostrom
  • Publication number: 20140260286
    Abstract: A heat recovery steam generator (HRSG) (10) including: an economizer (12) configured to heat a working fluid by extracting heat from a flow of flue gas (20). The HRSG includes a diluting fluid injector arrangement (60) configured to inject a diluting fluid (50) effective to dilute a concentration of a gaseous corrosive when compared to an undiluted concentration of the gaseous corrosive in the flow of flue gas. The HRSG also includes a preheater (18) configured to preheat the diluting fluid prior to injection.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: Zaher El Zahab, Gerald J. Feller
  • Patent number: 8833279
    Abstract: A reactor (110) serves to combust residual carbon in fine particulate matter, remove a contaminant from fine particulate matter, or change the composition of fine particulate matter. The reactor output is processed by particle collection devices (115, 125, 140, 155, 175) and heat exchangers (135, 150, 165) to provide particle outputs (118, 124, 131, 144, 159) of different sizes. A contaminant, such as carbon or a metal, is combusted, vaporized, volatized, broken down, or substantially appears on one particle output (144) so that another particle output and the exhaust gas (142) are substantially contaminant-free. Different outputs can also be selectively mixed, as desired, to product a combined output (171). Fly ash and silica fume can be processed separately or together to reduce the amount of unburned carbon in both. Metals can also be removed from the fine particulate matter. Kaolin can also be processed to produce metakaolin.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: September 16, 2014
    Assignee: The SEFA Group Inc.
    Inventors: Jimmy C. Knowles, John M. Castleman, III
  • Patent number: 8807056
    Abstract: A system and method is provided for the removal of mercury from flue gas. Effective removal of mercury is obtained by oxidation of elemental mercury, with highly reactive halogen species derived from dissociation of halogen compounds at moderate temperatures brought into contact with the flue gas with or without the addition of carbon.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: August 19, 2014
    Assignee: Energy & Environmental Research Center Foundation
    Inventors: Michael J. Holmes, John H. Pavlish, Edwin S. Olson
  • Patent number: 8795416
    Abstract: An in-situ forced oxidation wet flue gas desulfurization apparatus, method and arrangement for utilization with oxy-fuel combustion power plants. The apparatus is a tower-like structure having a flue gas scrubbing zone and a reaction zone located subjacent to the gas scrubbing zone. A sulfur oxide absorbing liquid slurry is supplied to the gas scrubbing zone to react with and scrub the sulfur oxides from the flue gas. The partially reacted liquid slurry reagent and the scrubbed products drain into the reaction zone, rising to a set level. Oxidation air is introduced into the liquid slurry in the reaction zone to force the in-situ oxidation of sulfur compounds collected in the reaction zone.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: August 5, 2014
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Dennis K. McDonald, Kevin J. Rogers
  • Publication number: 20140208994
    Abstract: A grid for distributing and mixing fluids in a duct includes a plurality of lances arranged in a first plane and configured to be positioned transverse to a direction of a first fluid flowing outside of the lances and within a predetermined flow area. Each of the plurality of lances has at least one first inlet and a plurality of outlet nozzles. One or more of the outlet nozzles is directed generally in the flow direction of the first fluid outside of the lances, and is configured to discharge a second fluid therefrom.
    Type: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Mitchell B. Cohen, Yen-Ming Chen, Armand A. Levasseur
  • Publication number: 20140202362
    Abstract: To include a boiler 11 that burns fuel F, an air heater 13 that recovers heat of flue gas 18 from the boiler 11, a first precipitator 14 that reduces dust in the flue gas 18 after heat recovery, a desulfurizer 15 that reduces sulfur oxides in the flue gas 18 after dust reduction by an absorbent, a dewaterer 32 that reduces gypsum 31 from desulfurization discharged water 30 discharged from the desulfurizer 15, a spray drying device 34 including an atomizer that atomizes a dewatering filtration fluid 33 discharged from the dewaterer 32, and a flue-gas introducing line L11 that introduces a part of the flue gas 18 into the spray drying device 34.
    Type: Application
    Filed: March 20, 2014
    Publication date: July 24, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Nobuyuki Ukai, Seiji Kagawa, Tatsuto Nagayasu, Naoyuki Kamiyama, Toshihiro Fukuda
  • Publication number: 20140182296
    Abstract: The disclosure is concerned with generating power using new organic fuel that is generated at wastewater purification plants in the form of sewage sludge with moisture content up to 90-95%. The world supplies this new orgabic fuel in very high quantites that are estimated to be more than 25-40 gr of dry mass/man/day. The new composite fuel comprises a coal suspension with the new dispersed medium, which is the liquid sewage sludge. The composite fuel is introduced into a furnace for combustion and generating power.
    Type: Application
    Filed: May 30, 2007
    Publication date: July 3, 2014
    Inventor: Tomer Zimmels
  • Publication number: 20140165888
    Abstract: A system and method for treating flue gas that results from a combustion process is described. The method and system includes injecting an SOx absorbent reagent into the flue gas pathway at a point upstream of a selective catalytic reduction (SCR) reactor exit and downstream of a boiler exit. The method and system may also include injecting a NOx reducing agent simultaneously with the SOx absorbent reagent, either via the same injection system or via a second injection system located nearby the SOx absorbent reagent injection system. Injection of the SOx at a point upstream of the SCR reactor exit simplifies the injection systems, gas distribution systems, and physical and/or computational fluid dynamics modeling.
    Type: Application
    Filed: May 9, 2012
    Publication date: June 19, 2014
    Applicant: FLUOR TECHNOLOGIES CORPORATION
    Inventors: Dennis W. Johnson, James H. Brown
  • Publication number: 20140137778
    Abstract: Selective non-catalytic reduction (SNCR) of pollutant emissions is accomplished in a solid fuel combustion furnace by injecting and directing jet streams of liquid NOx reducing agent, with or without dilution water mixing, into combustion zones and radiant section and convective paths of the furnace with water cannons as controlled by intelligent knowledge-based control algorithms. The control algorithms are based upon continuously monitored online-measured flue gas temperature, O2, CO and NOx mapping data profiles for the furnace.
    Type: Application
    Filed: December 16, 2013
    Publication date: May 22, 2014
    Applicant: Power & Industrial Services Corporation
    Inventor: Terry Higgins
  • Patent number: 8721771
    Abstract: An exhaust gas plume mitigation process and system includes either mixing secondary heat into a moisture rich exhaust gas stream, or diverting a moisture rich exhaust gas stream into a primary exhaust stack having hot exhaust gases flowing therethrough. Moisture rich exhaust gas from a liquid concentrator may be diverted into a high temperature exhaust stack of an engine, a generator, or a flare. The high temperature exhaust gases from the engine, the generator, or the flare raise the temperature of the moisture rich exhaust gas from the concentrator. The high temperature exhaust gases from the engine, the generator, or the flare are also lower in moisture content, so that the moisture rich exhaust gas from the concentrator is diluted by the drier high temperature exhaust gas. As a result, the mixed gas is less likely to develop a moisture plume upon exit to the atmosphere.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: May 13, 2014
    Assignee: Heartland Technology Partners LLC
    Inventors: Bernard F. Duesel, Jr., Michael J. Rutsch, Craig Clerkin
  • Publication number: 20140080071
    Abstract: A gas treatment plant (3) for treating an industrial waste gas comprising carbon dioxide comprises an oxyfuel boiler (100) and a pipe (109; 122; 180) arranged for forwarding the industrial waste gas to the oxyfuel boiler (100) and injecting the industrial waste gas into the oxyfuel boiler (100) to participate in the combustion process occurring in the boiler (100) to cause oxidation of at least a portion of the content of at least one oxidizable substance of the industrial waste gas. The gas treatment plant (3) further comprises a gas cleaning system (108), and a pipe (126) for forwarding a carbon dioxide rich flue gas generated in the boiler (100) to the gas cleaning system (108) for being cleaned therein, such that an at least partly cleaned carbon dioxide rich flue gas is formed.
    Type: Application
    Filed: September 20, 2012
    Publication date: March 20, 2014
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Ulrich Koss, Glen D. Jukkola
  • Publication number: 20140069306
    Abstract: Coal is properly dried and the efficiency of a boiler is increased while suppressing any reduction in efficiency of the boiler and the generation of hydrocarbon gas components. Employed are a coal dryer that dries coal, a boiler in which the coal that is dried in the coal dryer is mixed with air for combustion and burned, an air heater that heats the air for combustion that is supplied to the boiler using combustion exhaust gas discharged from the boiler, a precipitator that collects dust included in the combustion exhaust gas, a desulfurization plant that performs a desulfurization process on the combustion exhaust gas, and heat recovery equipment that heats a heating medium using the combustion exhaust gas. The coal dryer dries the coal using the heat energy of the heating medium that has been heated in the heat recovery equipment.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 13, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoru Sugita, Shintaro Honjo, Takuya Okamoto
  • Patent number: 8640656
    Abstract: A self-sustaining boiler system for generating usable energy and heat without creating pollution. The self-sustaining boiler system includes a boiler capable of generating efficient usable energy and heat, and also includes an exhaust purifying assembly being in fluid communication to the boiler for removing the pollutants from the exhaust generated by the boiler, and further includes a fuel source assembly being in fluid communication to the boiler for providing fuel to the boiler.
    Type: Grant
    Filed: February 27, 2010
    Date of Patent: February 4, 2014
    Inventors: Woody Vouth Vann, Sitha Sarin
  • Publication number: 20130333598
    Abstract: A converter exhaust gas recovery apparatus includes a furnace top oxygen analyzer that analyzes an oxygen concentration in exhaust gas on an exhaust gas path and on an upstream side of a dust collection position where dust collection is performed and a furnace top CO analyzer that analyzes a CO concentration in the exhaust gas; and a furnace bottom oxygen analyzer that irradiates the exhaust gas that flows on a downstream side of the dust collection position with a laser light and analyzes the oxygen concentration based on quantity-of-light changes caused by a light absorption of the laser light.
    Type: Application
    Filed: May 30, 2012
    Publication date: December 19, 2013
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Naoki Furukawa, Haruo Kohtaki
  • Patent number: 8555797
    Abstract: Disclosed herein is a NOx reducing system comprising a first inner conduit in fluid communication with a reactant source; and a first outer conduit comprising an open end for receiving the first inner conduit and a closed end; the first outer conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream. Also disclosed herein is a NOx reducing system comprising a conduit comprising a closed end and an open end that is in fluid communication with a reactant source; the conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream; the port being located on a downstream surface of the first outer conduit.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: October 15, 2013
    Assignee: Alstom Technology Ltd
    Inventor: Iqbal F. Abdulally
  • Patent number: 8449288
    Abstract: A method for reducing NOx formation, including the steps of: providing a furnace with a plurality of secondary air injection ducts, asymmetrically positioned in an opposing manner; injecting fuel with primary air through a first stage prior to injection of a second air; injecting secondary air and aqueous urea solution through the plurality of reagent injection ducts; controlling the asymmetrical injection to produce a high velocity mass flow and a turbulence resulting in dispersion of the urea solution into the combustion space, thereby providing reduced NOx formation in the combustion process.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: May 28, 2013
    Assignee: Nalco Mobotec, Inc.
    Inventor: Brian S. Higgins
  • Publication number: 20130092063
    Abstract: The invention relates to a column, with a jacket, extending along a longitudinal axis, which jacket bounds a first jacket space and a second jacket space arranged over it along the longitudinal axis, a chimney tray, extending crosswise to the longitudinal axis, that separates the two jacket spaces from one another. The at least a first chimney extends from the tray along the longitudinal axis, and projects into the second jacket space. The chimney has a peripheral wall defining an opening, via which the two jacket spaces are connected to one another for gas feed, and a chimney top. On the peripheral wall, a flat impact element is arranged tilted toward the longitudinal axis in such a way that a liquid phase flowing downward from the chimney top along the longitudinal axis strikes the flat impact element diminishing the momentum input of the liquid phase that stands on the chimney tray.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 18, 2013
    Applicant: LINDE AKTIENGESELLSCHAFT
    Inventor: LINDE AKTIENGESELLSCHAFT
  • Publication number: 20130074746
    Abstract: Selective non-catalytic reduction (SNCR) of pollutant remissions in a fossil fuel combustion furnace having water cannons installed therein for removing combustion incrustation is accomplished by using the water cannons intended for de-slagging by mixing a reagent with water and administering the mixture under high velocity and high blast flow rate to the interior of the furnace for reduction of pollutant emissions, such as NOx, with the water cannons. The water cannons may be switched from the SNCR function to a de-slagging function.
    Type: Application
    Filed: January 11, 2012
    Publication date: March 28, 2013
    Applicant: Power & Industrial Services Corporation
    Inventor: Terry Higgins
  • Patent number: 8375872
    Abstract: The present invention is directed to processes and apparatuses for reducing the content of pollutants in a boiler system flue gas resulting from combustion of fuel. The present invention discloses improved slurry injection techniques, re-circulation of flue gas to provide momentum to the injected slurry, a measurement system for obtaining system profile information and a system to optimize the reduction of pollutants in a flue gas by adjusting the injection of slurry suspension based on system profile information.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: February 19, 2013
    Assignee: Intertek APTECH
    Inventors: T. Steve Torbov, Terry W. Rettig, Stephen M. Kohan
  • Publication number: 20130036953
    Abstract: A wet type flue-gas desulfurization apparatus, into which exhaust gas containing mercury goes, includes an upstream absorption tower, an upstream absorbent spray nozzle and a make-up water supply unit on an upstream side of a desulfurization apparatus body in a flow direction of the gas. The upstream absorption tower has a circulation tank reserving absorbent slurry. The make-up water supply unit supplies make-up water into the circulation tank to keep the chloride ion concentration of the absorbent in the circulation tank not lower than 50,000 ppm. Thus, it is possible to provide a wet type flue-gas desulfurization apparatus by which Hg can be prevented from being released again from the desulfurization apparatus, the purity of recovered gypsum can be increased and the usage of industrial water can be reduced.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 14, 2013
    Applicant: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Yoshiaki Mitsui, Hiroshi Ishizaka, Naruhito Omine, Atsushi Katagawa, Ryota Ochiai
  • Publication number: 20130034479
    Abstract: A system and method is provided for the removal of mercury from flue gas. Effective removal of mercury is obtained by oxidation of elemental mercury, with highly reactive halogen species derived from dissociation of halogen compounds at moderate temperatures brought into contact with the flue gas with or without the addition of carbon.
    Type: Application
    Filed: July 9, 2012
    Publication date: February 7, 2013
    Inventors: Michael J. Holmes, John H. Pavlish, Edwin S. Olson
  • Publication number: 20130000319
    Abstract: Pyrolyzing gasification system and method of use including primary combustion of non-uniform solid fuels such as biomass and solid wastes within a refractory lined gasifier, secondary combustion of primary combustion gas within a staged, cyclonic, refractory lined oxidizer, and heat energy recovery from the oxidized flue gas within an indirect air-to-air all-ceramic heat exchanger or external combustion engine. Primary combustion occurs at low substoichoimetric air percentages of 10-30 percent and at temperatures below 1000 degrees F. Secondary combustion is staged and controlled for low NOx formation and prevention of formation of CO, hydrocarbons, and VOCs. The gasifier includes a furnace bed segmented into individual cells, each cell is independently monitored using a ramp temperature probe, and provided with controlled air injection. Gasifier air injection includes tuyere arrays, lances, or both.
    Type: Application
    Filed: March 14, 2012
    Publication date: January 3, 2013
    Inventor: Robert G. Graham
  • Publication number: 20120312203
    Abstract: A fluid regulator device having means for injecting one or more make-up fluids into a duct conveying the fluid to be regulated. Make-up fluids are injected selectively along at least two orientations. The means for selecting the orientation of injection are situated outside the main duct. A method of regulating a fluid, the method comprising a step of injecting one or more make-up fluids into a duct that conveys a flow of the fluid that is to be regulated.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 13, 2012
    Inventors: Yves BRAUD, Ludovic FERRAND
  • Patent number: 8327779
    Abstract: A combustion system having a furnace arranged and disposed to receive solid fuel and oxygen and combust the solid fuel and oxygen to form a flue gas. The system includes a heat exchanger arrangement arranged and disposed to receive heat from the flue gas, where the heat exchanger arrangement has a predetermined heat exchange capacity. A water injection arrangement is arranged and disposed to provide water to the flue gas to controllably adjust the flue gas mass flow rate and temperature to provide the predetermined heat exchange capacity.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: December 11, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Boyle Fogash, Xianming Jimmy Li
  • Patent number: 8312822
    Abstract: A system and method is provided for the removal of mercury from flue gas. Effective removal of mercury is obtained by oxidation of elemental mercury, with highly reactive halogen species derived from dissociation of halogen compounds at moderate temperatures brought into contact with the flue gas with or without the addition of carbon.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: November 20, 2012
    Assignee: Energy & Environmental Research Center Foundation
    Inventors: Michael J. Holmes, John H. Pavlish, Edwin S. Olson
  • Publication number: 20120285353
    Abstract: The present invention provides a novel process for quenching heat, scrubbing, cleaning and neutralizing the hot and dirty fossil fuel fired flue gas liberated by a fossil fuel fired boiler using the high temperature and high pressure present in fossil fuel fired boiler blow-down comprising the steps of quenching the fossil fuel fired flue gas by evaporating sufficient quantity of water from sea water/scrubbing liquid and mixing vapors thus generated with hot and dirty flue gas; using the high temperature and high pressure present in fossil fuel fired boiler blow-down (waste water) for atomizing/spraying high alkalinity sea water/scrubbing liquid on said flue gas to neutralize the acidic substances in said flue gas.
    Type: Application
    Filed: December 1, 2010
    Publication date: November 15, 2012
    Inventor: Subrahmanyam Kumar
  • Publication number: 20120222593
    Abstract: An oxygen fueled integrated pollutant removal and combustion system includes a combustion system and an integrated pollutant removal system. The combustion system includes a furnace having at least one burner that is configured to substantially prevent the introduction of air. An oxygen supply supplies oxygen at a predetermine purity greater than 21 percent and a carbon based fuel supply supplies a carbon based fuel. Oxygen and fuel are fed into the furnace in controlled proportion to each other and combustion is controlled to produce a flame temperature in excess The integrated. pollutant removal system includes at least one direct contact heat exchanger for bringing the flue gas into intimated contact with a cooling liquid to produce a pollutant-laden liquid stream and a stripped flue gas stream and at least one compressor for receiving and compressing the stripped flue gas stream.
    Type: Application
    Filed: December 29, 2011
    Publication date: September 6, 2012
    Applicant: JUPITER OXYGEN CORPORATION
    Inventors: Brian R. Patrick, Thomas Lilburn Ochs, Cathy Ann Summers, Danylo B. Oryshchyn, Paul Chandler Turner
  • Patent number: 8240259
    Abstract: A method and device for cooling hot crude gas and slag from entrained flow gasification of liquid and solid combustibles at crude gas temperatures ranging from 1,200 to 1,800° C. and at pressures of up to 80 bar in a cooling chamber disposed downstream of the gasification reactor by injecting water. The cooling water is distributed, with a first portion being finely dispersed into to cooling chamber and a second portion being fed at the bottom into an annular gap provided between the pressure-carrying tank wall and an incorporated metal apron for protecting said pressure-carrying tank wall. The second portion of the cooling water flows upward in the annular gap and trickles down the inner side of the metal apron in the form of a water film.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: August 14, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Norbert Fischer, Dietmar Degenkolb, Friedemann Mehlhose, Manfred Schingnitz