WO2006091635A2 - Method of applying mercury reagent with coal - Google Patents

Method of applying mercury reagent with coal Download PDF

Info

Publication number
WO2006091635A2
WO2006091635A2 PCT/US2006/006195 US2006006195W WO2006091635A2 WO 2006091635 A2 WO2006091635 A2 WO 2006091635A2 US 2006006195 W US2006006195 W US 2006006195W WO 2006091635 A2 WO2006091635 A2 WO 2006091635A2
Authority
WO
WIPO (PCT)
Prior art keywords
coal
mercury
compound
ppmw
halogen
Prior art date
Application number
PCT/US2006/006195
Other languages
French (fr)
Other versions
WO2006091635A3 (en
Inventor
Dennis K. Mcdonald
Amy P. Evans
Bryan J. Jankura
Original Assignee
The Babcock & Wilcox Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Babcock & Wilcox Company filed Critical The Babcock & Wilcox Company
Priority to EP06720957A priority Critical patent/EP1888721A2/en
Priority to CA002599420A priority patent/CA2599420A1/en
Publication of WO2006091635A2 publication Critical patent/WO2006091635A2/en
Publication of WO2006091635A3 publication Critical patent/WO2006091635A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/366—Powders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/10—Treating solid fuels to improve their combustion by using additives

Definitions

  • the present invention generally relates to combustion of fossil fuels in a boiler or furnace, and more specifically to a method of halogenating a fossil fuel prior to combustion to enhance removal of mercury from flue gas.
  • Coal fired utility plants are necessary to satisfy the energy needs of many countries.
  • Heat energy derived from combusting fossil fuels such as coal produces steam utilized to drive energy producing turbines.
  • a byproduct of the combustion process is a flue or combustion gas which, after a cleaning process, exits into the atmosphere.
  • Fossil fuels such as coal may contain varying levels of mercury. Upon combustion mercury may enter the flue gas as a solid particulate or as a gas in the vapor phase as elemental mercury or in one of many oxidized forms. Flue gas scrubbers are readily able to remove a substantial portion of mercury in the oxidized form, however current scrubber technology is relatively ineffective in removing elemental mercury from flue gas.
  • a general object of the present invention is drawn to a method for enhancing mercury removal from flue gas.
  • a more particular objective of the present invention involves a method for halogenating a fossil fuel such as coal prior to combustion to suppress the formation of elemental mercury in the vapor phase and favor its conversion to an oxidized form.
  • the present invention provides a method for halogenating a fossil fuel such as coal with chlorine or compounds thereof. After chlorination the coal is fed to a pulverizer 1 which further admixes the coal and chlorine thereby more uniformly dispersing the chlorine amongst the pulverized coal particles. Once pulverized the coal is fed to at least one burner and combusted in the presence of oxygen. The admixed chlorine readily oxidizes the elemental mercury contained within the coal during combustion, thereby suppressing formation of mercury in the elemental form. The oxidized mercury is then removed downstream of the burner utilizing a scrubber or other mercury removal means readily known to one of ordinary skill in the art.
  • the invention comprises the steps of treating mercury containing coal with a chlorine containing compound, pulverizing the treated coal, conveying the pulverized treated coal to a pulverized coal burner, utilizing the burner to combust the pulverized treated coal, wherein the chlorine containing compound oxidizes a substantial portion of the mercury contained in the coal during combustion, and creating a flue gas comprising oxidized mercury.
  • the invention comprises the steps of providing a burner with a mercury containing coal, utilizing the burner to combust the coal, and combusting the coal in the presence of a halogen containing compound, wherein elemental mercury is oxidized during combustion.
  • a flue gas monitoring means is utilized to monitor the mercury concentration of flue gas exiting the boiler.
  • the monitoring means then relays a signal to a regulating means, which regulates the level of chlorine treatment applied to the coal prior to pulverization in order to maximize mercury oxidation.
  • a halogen other than chlorine such as bromine, iodine, fluorine, or compounds thereof, may by used to halogenate the fossil fuel.
  • the present invention due to its ease of incorporation and benefit in mercury removal, provides an important advantage over prior art methods due to unexpected advantages and cost savings associated with forgoing the need to install expensive mercury vapor removal means in order to lower mercury emissions. Further, as a single pulverizer 1 may provide coal to numerous burners, substantial economic savings are observed by chlorinating the coal prior to combustion and utilizing existing piping 2 between the pulverizer and burners thereby forgoing the need to install additional piping or ductwork to each burner.
  • FIG. 1. is a schematic diagram of an embodiment of the present invention.
  • FIG. 1 a schematic diagram of an embodiment of the present invention is shown.
  • a fossil fuel such as coal
  • the belt feeder 3 provides the coal to the pulverizer 1 wherein the coal is pulverized to a predetermined particle size.
  • the coal Prior to being pulverized, preferably while the coal is on the belt feeder 3 or alternatively dropping into the pulverizer, the coal is treated with a liquid or solid chlorine reagent, preferably sodium chloride or calcium chloride.
  • a liquid or solid chlorine reagent preferably sodium chloride or calcium chloride.
  • Spray nozzles 5 located above and/or around the belt may be provided to treat the coal with liquid chlorine reagent prior to pulverization.
  • Reagent flow rate may be control manually by valves 6 or alternatively utilize automated means.
  • reagent may be supplied to coal in the form of solid pellets, powder, or granules utilizing a solids feeder in place of the spray nozzle 5.
  • the coal is treated with between about 2 ppmw and 1200 ppmw of halogen, and more preferably between about 200 ppmw and 600 ppmw, wherein ppmw refers to pounds of halogen per one million pounds of a wet fossil fuel such as wet coal.
  • Treatment comprises the steps of providing the coal with sufficient chlorine to substantially suppress the formation of elemental mercury vapor, and pulverizing the coal in the presence of the chlorine reagent. During pulverization the coal and chlorine reagent are further admixed so as to provide more uniform distribution of chlorine amongst the pulverized coal particles. [0016] Upon exiting the pulverizer, the treated coal particles are fed through a series of coal pipes 2 to a burner, wherein the coal is combusted, preferably at a temperature between about 1050 0 C and about 2000 0 C, in the presence of oxygen. During combustion the mercury contained within the coal oxidizes in the presence of chlorine to favor the production of an oxidized form of mercury, such as mercuric chloride, over elemental mercury in the vapor form.
  • an oxidized form of mercury such as mercuric chloride
  • Resulting mercury concentration in the flue gas exiting the boiler is decreased because scrubbers and other flue gas cleansing means are more readily able to remove mercury in the oxidized form, and formation of mercury in the elemental form is suppressed in favor of the oxidized form due to the presence of a halogen such as chlorine.
  • a single reagent storage means 7 is used to supply chlorine reagent to multiple belt feeders utilizing control valves 6 and piping that allows the treatment rate to any belt feeder to be controlled independently of the treatment rate to another belt feeder.
  • an automated means for controlling the treatment rate may be utilized.
  • a mercury detection means is installed in the flue gas stack to monitor the level of mercury in the flue gas as it exits into the atmosphere.
  • An electronic signal is then sent to a regulating means which conveys instructions to adjust the flowrate of the chlorine reagent treating the coal to a level which optimizes low mercury emissions.
  • the chlorine reagent may be replaced with another halogen reagent such as bromine, iodine, fluorine, etc... or compounds thereof.
  • a combination of more than one halogen reagent may be used such as reagent mixture comprising both bromine and chlorine, or any other number of halogen reagent combinations incorporating more than one halogen reagent as would be known by one of ordinary skill in the art.

Abstract

A method of halogenating coal prior to combustion, wherein the coal is treated with a halogen prior to pulverization and the pulverized halogenated coal is delivered to a burner as fuel for a combustion process.

Description

METHOD OF APPLYING MERCURY REAGENT WITH COAL
Field and Background of Invention
[001] The present invention generally relates to combustion of fossil fuels in a boiler or furnace, and more specifically to a method of halogenating a fossil fuel prior to combustion to enhance removal of mercury from flue gas.
[002] Coal fired utility plants are necessary to satisfy the energy needs of many countries. Heat energy derived from combusting fossil fuels such as coal produces steam utilized to drive energy producing turbines. A byproduct of the combustion process is a flue or combustion gas which, after a cleaning process, exits into the atmosphere.
[003] Fossil fuels such as coal may contain varying levels of mercury. Upon combustion mercury may enter the flue gas as a solid particulate or as a gas in the vapor phase as elemental mercury or in one of many oxidized forms. Flue gas scrubbers are readily able to remove a substantial portion of mercury in the oxidized form, however current scrubber technology is relatively ineffective in removing elemental mercury from flue gas.
[004] Environmental regulations strictly regulate flue gas emissions for pollutants such as sulfur and nitrogen oxides, and the U.S. EPA is considering implementing mercury emission standards. In order to meet such proposed environmental regulations, a need exists for a new and more effective means of controlling mercury emissions arising from the combustion of fossil fuels.
Summary of Invention
[005] A general object of the present invention is drawn to a method for enhancing mercury removal from flue gas. A more particular objective of the present invention involves a method for halogenating a fossil fuel such as coal prior to combustion to suppress the formation of elemental mercury in the vapor phase and favor its conversion to an oxidized form.
[006] In a first aspect, the present invention provides a method for halogenating a fossil fuel such as coal with chlorine or compounds thereof. After chlorination the coal is fed to a pulverizer 1 which further admixes the coal and chlorine thereby more uniformly dispersing the chlorine amongst the pulverized coal particles. Once pulverized the coal is fed to at least one burner and combusted in the presence of oxygen. The admixed chlorine readily oxidizes the elemental mercury contained within the coal during combustion, thereby suppressing formation of mercury in the elemental form. The oxidized mercury is then removed downstream of the burner utilizing a scrubber or other mercury removal means readily known to one of ordinary skill in the art.
[007] In another aspect, the invention comprises the steps of treating mercury containing coal with a chlorine containing compound, pulverizing the treated coal, conveying the pulverized treated coal to a pulverized coal burner, utilizing the burner to combust the pulverized treated coal, wherein the chlorine containing compound oxidizes a substantial portion of the mercury contained in the coal during combustion, and creating a flue gas comprising oxidized mercury.
[008] In yet another aspect, the invention comprises the steps of providing a burner with a mercury containing coal, utilizing the burner to combust the coal, and combusting the coal in the presence of a halogen containing compound, wherein elemental mercury is oxidized during combustion.
[009] In yet another aspect a flue gas monitoring means is utilized to monitor the mercury concentration of flue gas exiting the boiler. The monitoring means then relays a signal to a regulating means, which regulates the level of chlorine treatment applied to the coal prior to pulverization in order to maximize mercury oxidation.
[0010] In yet another aspect of the present invention a halogen other than chlorine, such as bromine, iodine, fluorine, or compounds thereof, may by used to halogenate the fossil fuel.
[0011] The present invention, due to its ease of incorporation and benefit in mercury removal, provides an important advantage over prior art methods due to unexpected advantages and cost savings associated with forgoing the need to install expensive mercury vapor removal means in order to lower mercury emissions. Further, as a single pulverizer 1 may provide coal to numerous burners, substantial economic savings are observed by chlorinating the coal prior to combustion and utilizing existing piping 2 between the pulverizer and burners thereby forgoing the need to install additional piping or ductwork to each burner. Brief Description of the Drawings
[0012] FIG. 1. is a schematic diagram of an embodiment of the present invention.
Description of the Preferred Embodiments
[0013] Referring now to Fig. 1 , a schematic diagram of an embodiment of the present invention is shown. A fossil fuel, such as coal, is provided from a coal silo 4 onto a belt feeder 3, such as a gravimetric feeder or other belt feeding apparatus. The belt feeder 3 in turn provides the coal to the pulverizer 1 wherein the coal is pulverized to a predetermined particle size.
[0014] Prior to being pulverized, preferably while the coal is on the belt feeder 3 or alternatively dropping into the pulverizer, the coal is treated with a liquid or solid chlorine reagent, preferably sodium chloride or calcium chloride. Spray nozzles 5 located above and/or around the belt may be provided to treat the coal with liquid chlorine reagent prior to pulverization. Reagent flow rate may be control manually by valves 6 or alternatively utilize automated means. Alternatively, reagent may be supplied to coal in the form of solid pellets, powder, or granules utilizing a solids feeder in place of the spray nozzle 5. Preferably the coal is treated with between about 2 ppmw and 1200 ppmw of halogen, and more preferably between about 200 ppmw and 600 ppmw, wherein ppmw refers to pounds of halogen per one million pounds of a wet fossil fuel such as wet coal.
[0015] Treatment comprises the steps of providing the coal with sufficient chlorine to substantially suppress the formation of elemental mercury vapor, and pulverizing the coal in the presence of the chlorine reagent. During pulverization the coal and chlorine reagent are further admixed so as to provide more uniform distribution of chlorine amongst the pulverized coal particles. [0016] Upon exiting the pulverizer, the treated coal particles are fed through a series of coal pipes 2 to a burner, wherein the coal is combusted, preferably at a temperature between about 1050 0C and about 2000 0C, in the presence of oxygen. During combustion the mercury contained within the coal oxidizes in the presence of chlorine to favor the production of an oxidized form of mercury, such as mercuric chloride, over elemental mercury in the vapor form.
[0017] Resulting mercury concentration in the flue gas exiting the boiler is decreased because scrubbers and other flue gas cleansing means are more readily able to remove mercury in the oxidized form, and formation of mercury in the elemental form is suppressed in favor of the oxidized form due to the presence of a halogen such as chlorine.
[0018] In an alternative embodiment, a single reagent storage means 7 is used to supply chlorine reagent to multiple belt feeders utilizing control valves 6 and piping that allows the treatment rate to any belt feeder to be controlled independently of the treatment rate to another belt feeder.
[0019] In yet another alternative embodiment, an automated means for controlling the treatment rate may be utilized. In this embodiment, a mercury detection means is installed in the flue gas stack to monitor the level of mercury in the flue gas as it exits into the atmosphere. An electronic signal is then sent to a regulating means which conveys instructions to adjust the flowrate of the chlorine reagent treating the coal to a level which optimizes low mercury emissions.
[0020] In yet another embodiment, the chlorine reagent may be replaced with another halogen reagent such as bromine, iodine, fluorine, etc... or compounds thereof.
[0021] In yet another embodiment a combination of more than one halogen reagent may be used such as reagent mixture comprising both bromine and chlorine, or any other number of halogen reagent combinations incorporating more than one halogen reagent as would be known by one of ordinary skill in the art.
[0022] While the specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise as appreciated by one of ordinary skill in the art without departing from the scope of the present invention.

Claims

ClaimsWe claim:
1. A method of oxidizing mercury comprising: treating a coal comprising mercury with a compound comprising a halogen; pulverizing the treated coal; feeding the pulverized treated coal to a pulverized coal burner; utilizing the burner to combust the pulverized treated coal, wherein the compound oxidizes a substantial portion of the mercury contained in the coal during combustion; and creating a flue gas comprising oxidized mercury.
2. The method of claim 1 wherein the combustion occurs between about 1050° C and about 2000° C.
3. The method of claim 2, wherein at least one mercury removing means removes a portion of the oxidized mercury from the flue gas downstream of the burner.
4. The method of claim 3, wherein an aqueous solution comprising the compound is admixed with the mercury containing coal.
5. The method of claim 4, wherein the aqueous solution is sprayed on the coal.
6. The method of claim 3, wherein a solid comprising the compound is admixed with the mercury containing coal.
7. The method of claim 3, wherein the compound is selected from the group consisting of sodium chloride, calcium chloride, and calcium bromide.
8. The method of claim 3, wherein about 2 ppmw to about 1200 ppmw of the halogen is admixed with the mercury containing coal during treatment.
9. The method of claim 3, wherein about 2 ppmw to about 30 ppmw of the halogen is admixed with the mercury containing coal during treatment.
10. The method of claim 3, wherein about 300 ppmw to about 600 ppmw of the halogen is admixed with the mercury containing coal during treatment.
11. The method of claim 8, further comprising the steps of monitoring the concentration of mercury in the flue gas, and regulating the rate of dispensing the compound to maintain substantial oxidation of the mercury during combustion.
12. A method of producing oxidized mercury comprising: providing a burner with a mercury containing coal; utilizing the burner to combust the coal; and combusting the coal in the presence of a compound comprising a halogen, wherein elemental mercury is oxidized during combustion.
13. The method of claim 12, wherein the compound is added to the coal upstream of the burner.
14. The method of claim 13, wherein a solution comprising the compound is sprayed on the coal.
15. The method of claim 13, wherein a solid comprising the compound is admixed with the mercury containing coal.
16. The method of claim 14, wherein the compound is selected from the group consisting of sodium chloride and calcium chloride.
17. The method of claim 15, wherein the compound is selected from the group consisting of sodium chloride and calcium chloride.
18. The method of claim 17, wherein the coal is pulverized prior to combustion and the compound is added to the coal prior to the coal pulverization.
19. The method of claim 12, wherein the combustion take place between about 1050° C and about 2000° C.
20. The method of claim 19, wherein about 2 ppmw to about 1200 ppmw of the halogen is admixed with the mercury containing coal during treatment.
21. The method of claim 19, wherein about 2 ppmw to about 30 ppmw of the halogen is admixed with the mercury containing coal during treatment.
22. The method of claim 18, wherein about 300 ppmw to about 600 ppmw of the halogen is admixed with the mercury containing coal during treatment.
PCT/US2006/006195 2005-02-24 2006-02-23 Method of applying mercury reagent with coal WO2006091635A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06720957A EP1888721A2 (en) 2005-02-24 2006-02-23 Method of applying mercury reagent with coal
CA002599420A CA2599420A1 (en) 2005-02-24 2006-02-23 Method of applying mercury reagent with coal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/065,398 2005-02-24
US11/065,398 US20060185226A1 (en) 2005-02-24 2005-02-24 Method of applying mercury reagent with coal

Publications (2)

Publication Number Publication Date
WO2006091635A2 true WO2006091635A2 (en) 2006-08-31
WO2006091635A3 WO2006091635A3 (en) 2007-09-07

Family

ID=36911103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/006195 WO2006091635A2 (en) 2005-02-24 2006-02-23 Method of applying mercury reagent with coal

Country Status (6)

Country Link
US (1) US20060185226A1 (en)
EP (1) EP1888721A2 (en)
CN (1) CN101133141A (en)
CA (1) CA2599420A1 (en)
UA (1) UA93367C2 (en)
WO (1) WO2006091635A2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8845986B2 (en) 2011-05-13 2014-09-30 ADA-ES, Inc. Process to reduce emissions of nitrogen oxides and mercury from coal-fired boilers
AU2014256383B2 (en) * 2005-03-17 2016-08-04 Douglas C. Comrie Reducing mercury emissions from the burning of coal
US9957454B2 (en) 2012-08-10 2018-05-01 ADA-ES, Inc. Method and additive for controlling nitrogen oxide emissions
US10427096B2 (en) 2010-02-04 2019-10-01 ADA-ES, Inc. Method and system for controlling mercury emissions from coal-fired thermal processes
US10589292B2 (en) 2013-08-16 2020-03-17 ADA-ES, Inc. Method to reduce mercury, acid gas, and particulate emissions
US10730015B2 (en) 2010-10-25 2020-08-04 ADA-ES, Inc. Hot-side method and system
US10758863B2 (en) 2012-04-11 2020-09-01 ADA-ES, Inc. Control of wet scrubber oxidation inhibitor and byproduct recovery
US11298657B2 (en) 2010-10-25 2022-04-12 ADA-ES, Inc. Hot-side method and system

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8124036B1 (en) 2005-10-27 2012-02-28 ADA-ES, Inc. Additives for mercury oxidation in coal-fired power plants
ES2698259T5 (en) * 2005-03-17 2022-06-21 Nox Ii Int Ltd Reduction of mercury emissions from coal combustion
CA2601239C (en) 2005-03-17 2013-07-16 Nox Ii, Ltd. Reducing mercury emissions from the burning of coal
KR20100028593A (en) * 2007-07-03 2010-03-12 알베마를 코포레이션 Use of compounds containing halogen and nitrogen for reducing mercury emissions during coal combustion
US8313543B2 (en) * 2008-09-24 2012-11-20 Albemarle Corporation Bromine chloride compositions for removing mercury from emissions produced during fuel combustion
CA2658469C (en) 2008-10-03 2012-08-14 Rajender P. Gupta Bromination process
US20100263577A1 (en) * 2009-04-21 2010-10-21 Industrial Accessories Company Pollution abatement process for fossil fuel-fired boilers
US20110053100A1 (en) * 2009-08-28 2011-03-03 Sinha Rabindra K Composition and Method for Reducing Mercury Emitted into the Atmosphere
US8372362B2 (en) 2010-02-04 2013-02-12 ADA-ES, Inc. Method and system for controlling mercury emissions from coal-fired thermal processes
US8524179B2 (en) 2010-10-25 2013-09-03 ADA-ES, Inc. Hot-side method and system
CA2792732C (en) 2010-03-10 2018-07-31 Martin A. Dillon Process for dilute phase injection of dry alkaline materials
US8784757B2 (en) 2010-03-10 2014-07-22 ADA-ES, Inc. Air treatment process for dilute phase injection of dry alkaline materials
EP2670515A4 (en) * 2011-02-01 2017-12-06 Shaw Environmental & Infrastructure, Inc. Emission control system
WO2012106715A1 (en) * 2011-02-04 2012-08-09 ADA-ES, Inc. Remote additive application
CN102343200A (en) * 2011-09-21 2012-02-08 中国华能集团清洁能源技术研究院有限公司 Method and system for efficiently controlling mercury pollution of coal-fired power plant at low cost
US9017452B2 (en) 2011-11-14 2015-04-28 ADA-ES, Inc. System and method for dense phase sorbent injection
US8974756B2 (en) 2012-07-25 2015-03-10 ADA-ES, Inc. Process to enhance mixing of dry sorbents and flue gas for air pollution control
US10350545B2 (en) 2014-11-25 2019-07-16 ADA-ES, Inc. Low pressure drop static mixing system
WO2019178137A1 (en) * 2018-03-14 2019-09-19 Midwest Energy Emissions Corp Halide injection system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765259A (en) * 1987-07-20 1988-08-23 Exxon Research And Engineering Company Sodium addition to low rank coal to enhance particulate removal from combustion effluent
US6790420B2 (en) * 2002-02-07 2004-09-14 Breen Energy Solutions, Llc Control of mercury and other elemental metal emissions from combustion devices by oxidation
US6855859B2 (en) * 1999-03-31 2005-02-15 The Babcock & Wilcox Company Method for controlling elemental mercury emissions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187944A (en) * 1962-10-09 1965-06-08 Arthur J Stock Gravimetric feeder and method of filling voids therein or in other pressure vessels
CN1933894A (en) * 2004-03-22 2007-03-21 巴布考克及威尔考克斯公司 Bromine addition for the improved removal of mercury from flue gas

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765259A (en) * 1987-07-20 1988-08-23 Exxon Research And Engineering Company Sodium addition to low rank coal to enhance particulate removal from combustion effluent
US6855859B2 (en) * 1999-03-31 2005-02-15 The Babcock & Wilcox Company Method for controlling elemental mercury emissions
US6790420B2 (en) * 2002-02-07 2004-09-14 Breen Energy Solutions, Llc Control of mercury and other elemental metal emissions from combustion devices by oxidation

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014256383B2 (en) * 2005-03-17 2016-08-04 Douglas C. Comrie Reducing mercury emissions from the burning of coal
US10427096B2 (en) 2010-02-04 2019-10-01 ADA-ES, Inc. Method and system for controlling mercury emissions from coal-fired thermal processes
US11213787B2 (en) 2010-02-04 2022-01-04 ADA-ES, Inc. Method and system for controlling mercury emissions from coal-fired thermal processes
US10843130B2 (en) 2010-02-04 2020-11-24 ADA-ES, Inc. Method and system for controlling mercury emissions from coal-fired thermal processes
US10730015B2 (en) 2010-10-25 2020-08-04 ADA-ES, Inc. Hot-side method and system
US11298657B2 (en) 2010-10-25 2022-04-12 ADA-ES, Inc. Hot-side method and system
US11118127B2 (en) 2011-05-13 2021-09-14 ADA-ES, Inc. Process to reduce emissions of nitrogen oxides and mercury from coal-fired boilers
US8845986B2 (en) 2011-05-13 2014-09-30 ADA-ES, Inc. Process to reduce emissions of nitrogen oxides and mercury from coal-fired boilers
US10731095B2 (en) 2011-05-13 2020-08-04 ADA-ES, Inc. Process to reduce emissions of nitrogen oxides and mercury from coal-fired boilers
US9850442B2 (en) 2011-05-13 2017-12-26 ADA-ES, Inc. Process to reduce emissions of nitrogen oxides and mercury from coal-fired boilers
US9238782B2 (en) 2011-05-13 2016-01-19 ADA-ES, Inc. Process to reduce emissions of nitrogen oxides and mercury from coal-fired boilers
US10465137B2 (en) 2011-05-13 2019-11-05 Ada Es, Inc. Process to reduce emissions of nitrogen oxides and mercury from coal-fired boilers
US10758863B2 (en) 2012-04-11 2020-09-01 ADA-ES, Inc. Control of wet scrubber oxidation inhibitor and byproduct recovery
US11065578B2 (en) 2012-04-11 2021-07-20 ADA-ES, Inc. Control of wet scrubber oxidation inhibitor and byproduct recovery
US10767130B2 (en) 2012-08-10 2020-09-08 ADA-ES, Inc. Method and additive for controlling nitrogen oxide emissions
US9957454B2 (en) 2012-08-10 2018-05-01 ADA-ES, Inc. Method and additive for controlling nitrogen oxide emissions
US11384304B2 (en) 2012-08-10 2022-07-12 ADA-ES, Inc. Method and additive for controlling nitrogen oxide emissions
US10589292B2 (en) 2013-08-16 2020-03-17 ADA-ES, Inc. Method to reduce mercury, acid gas, and particulate emissions

Also Published As

Publication number Publication date
CA2599420A1 (en) 2006-08-31
UA93367C2 (en) 2011-02-10
US20060185226A1 (en) 2006-08-24
EP1888721A2 (en) 2008-02-20
CN101133141A (en) 2008-02-27
WO2006091635A3 (en) 2007-09-07

Similar Documents

Publication Publication Date Title
US20060185226A1 (en) Method of applying mercury reagent with coal
US11732888B2 (en) Sorbents for coal combustion
US9555369B2 (en) Emission control system
CN102015070B (en) System for treating discharge gas and method of removing mercury from discharge gas
RU2607410C2 (en) Dry sorbent introduction under conditions of non-stationary state into dry gas cleaning scrubber
US20180250628A1 (en) Sorbent injection system and method for treating flue gases
CN113144862A (en) Biomass incineration power generation flue gas ultralow emission system and emission method thereof
JP2011120981A (en) Oxygen combustion type exhaust gas treatment apparatus and operation method for the same
US9797598B1 (en) Method for controlling gaseous mercury emission between two or more coal-fired combustion units
CN113251411B (en) Multi-pollutant cooperative control system and method for coal-fired industrial boiler
AU2016250355B2 (en) Reducing mercury emissions from the burning of coal
AU2012202264B2 (en) Reducing mercury emissions from the burning of coal
Mutama et al. Load Cycling of a 242 MW Coal Fired Steam Turbine Plant Designed for Base Load Operations
AU2014256383A1 (en) Reducing mercury emissions from the burning of coal

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200680005956.4

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2599420

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2006720957

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 3159/KOLNP/2007

Country of ref document: IN