US20090249988A1 - Apparatus and Process for Oxycombustion with CO2 Capture - Google Patents

Apparatus and Process for Oxycombustion with CO2 Capture Download PDF

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Publication number
US20090249988A1
US20090249988A1 US12/197,420 US19742008A US2009249988A1 US 20090249988 A1 US20090249988 A1 US 20090249988A1 US 19742008 A US19742008 A US 19742008A US 2009249988 A1 US2009249988 A1 US 2009249988A1
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Prior art keywords
boiler
air separation
oxygen
separation unit
oxycombustion
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US12/197,420
Inventor
Benoit Davidian
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Application filed by LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Assigned to L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE reassignment L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAVIDIAN, BENOIT
Publication of US20090249988A1 publication Critical patent/US20090249988A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/006—Layout of treatment plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/007—Supplying oxygen or oxygen-enriched air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/10—Premixing fluegas with fuel and combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/20—Sulfur; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/50—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/15061—Deep cooling or freezing of flue gas rich of CO2 to deliver CO2-free emissions, or to deliver liquid CO2
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07001—Injecting synthetic air, i.e. a combustion supporting mixture made of pure oxygen and an inert gas, e.g. nitrogen or recycled fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07007—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber using specific ranges of oxygen percentage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/32—Direct CO2 mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the present invention relates to an apparatus and process for oxycombustion with carbon dioxide capture.
  • the oxycombustion in a boiler serves to facilitate CO 2 capture.
  • the energy consumption of the air separation unit significantly encumbers the overall efficiency of the installation. In general, it represents nearly twice the consumption of CO 2 purification and compression, before sequestration.
  • the invention consists in selecting a purity for the oxygen produced by the ASU that minimizes the overall consumption of the ASU and of the CO 2 CPU.
  • the invention consists in selecting a purity for the oxygen-rich product of the ASU that minimizes the overall ASU+CO 2 CPU consumption, while taking account of the air infiltration into the boiler (if applicable).
  • producing very impure oxygen means having more nitrogen in the boiler flue gases, which penalizes the CO 2 CPU portion in terms of size and energy, because of the higher flow rate to be treated.
  • an oxycombustion apparatus comprising an air separation unit in which oxygen is produced optionally by cryogenic distillation, an oxycombustion boiler, means for sending the oxygen and a fuel to the oxycombustion boiler, means for recovering carbon dioxide-containing flue gases from the oxycombustion boiler, and means for purifying the flue gases in order to extract carbon dioxide therefrom, characterized in that the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 95 mol %.
  • the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 90 mol %
  • the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 85 mol %
  • the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 80 mol %
  • the apparatus comprises a double or triple air separation column, means for sending the air to the column operating at the highest pressure, the column operating at the lowest pressure containing two condensers, i.e. a chamber condenser and an intermediate condenser.
  • an oxycombustion process in which oxygen is produced optionally by cryogenic distillation in an air separation unit, the oxygen and a fuel are sent to an oxycombustion boiler, flue gases containing carbon dioxide are recovered from the oxycombustion boiler, and the flue gases are purified to extract carbon dioxide therefrom, characterized in that the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 95 mol %.
  • the air separation unit produces oxygen to be sent to the boiler having a purity not exceeding 90 mol %
  • the air separation unit produces oxygen to be sent to the boiler having a purity not exceeding 85 mol %
  • the air separation unit produces oxygen to be sent to the boiler having a purity not exceeding 80 mol %.
  • FIG. 1 is a schematic view of an oxycombustion apparatus in accordance with one embodiment of the present invention.
  • An air separation unit 2 produces an oxygen-rich stream 10 having a purity of 75 to 95 % and a waste nitrogen stream 13 .
  • the oxygen-rich stream 10 is divided into two to form two sub-streams 11 and 12 .
  • a recycle stream 15 is sent to the coal 14 spray unit 3 .
  • the stream 11 is mixed with the recycle stream 15 downstream of the unit 3 and the mixture is sent to the burners of the boiler 1 .
  • the stream 12 is mixed with a recycle stream 16 which supplies the burners.
  • Water is sent to the boiler 1 to produce steam 18 to be expanded in the turbine 8 .
  • the waste gas 19 consisting of the CO 2 -rich oxycombustion flue gases, typically containing more than 70 mol % CO 2 , passes through several treatments to remove the impurities. Its composition is typically (dry basis):
  • These units may comprise a unit 4 for removing NOx, for example by reduction, a unit 5 for removing dust, for example by filtration, a unit 6 for desulphurization to remove SO 2 and/or SO 3 .
  • the units 4 and 6 may not be necessary depending on the CO 2 purity required.
  • the purified waste gas 24 is sent to the compression and purification unit 7 to produce a CO 2 -rich stream containing more than 85% CO 2 , or even more than 99% CO 2 , which can be recovered, and a waste stream 26 .
  • the air separation unit 2 is preferably of the type comprising a double or triple air separation column with medium pressure column and low pressure column.
  • the low pressure column comprises a chamber condenser and an intermediate condenser, the chamber condenser being heated by air or nitrogen and the intermediate condenser being heated by nitrogen.
  • Such apparatus are known from EP-A-0538118 and U.S. Pat. No. 4,704,148.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Treating Waste Gases (AREA)

Abstract

An oxycombustion apparatus comprising an air separation unit (2) in which oxygen (10) is produced optionally by cryogenic distillation, an oxycombustion boiler (1), means for sending the oxygen and a fuel (14) to the oxycombustion boiler, means (19) for recovering carbon dioxide-containing flue gases from the oxycombustion boiler, and means (7) for purifying the flue gases in order to extract carbon dioxide therefrom, the air separation unit being provided for producing oxygen to be sent to the boiler having a purity not exceeding 95 mol %.

Description

  • This application claims priority from FR 0852312 filed Apr. 7, 2008.
    • BACKGROUND Field of Invention
  • The present invention relates to an apparatus and process for oxycombustion with carbon dioxide capture. The oxycombustion in a boiler serves to facilitate CO2 capture.
  • The energy consumption of the air separation unit significantly encumbers the overall efficiency of the installation. In general, it represents nearly twice the consumption of CO2 purification and compression, before sequestration.
  • It is proposed to reduce the overall energy consumption of the air separation unit (ASU) supplying the oxycombustion and of the CO2 purification and compression unit (CO2 CPU)
    • SUMMARY OF THE INVENTION
  • The invention consists in selecting a purity for the oxygen produced by the ASU that minimizes the overall consumption of the ASU and of the CO2 CPU.
  • The invention consists in selecting a purity for the oxygen-rich product of the ASU that minimizes the overall ASU+CO2 CPU consumption, while taking account of the air infiltration into the boiler (if applicable).
  • For example, in a conventional low pressure ASU configuration, of the type having two reboilers in the low pressure column and a CO2 CPU based on a purification using two phase separators, up to 3% of purification using two phase separators, up to 3% of the energy (related to the ASU) can be saved by producing oxygen at 85 mol % instead of 95 mol %, which is the conventionally adopted value.
  • Also in a conventional low pressure ASU configuration, of the type using two reboilers in the low pressure column and a CO2 CPU based on a purification using two phase separators and a distillation column with recycling of a pure or impure CO2 fluid, up to 5% of the energy (related to the ASU) can be saved by producing oxygen at 75 mol % instead of 95 mol %.
  • Obviously, producing very impure oxygen means having more nitrogen in the boiler flue gases, which penalizes the CO2 CPU portion in terms of size and energy, because of the higher flow rate to be treated.
  • Nevertheless, unexpectedly, when the relative weight of the CO2 CPU in terms of energy and cost is compared to the ASU, it is advantageous to shift the operating point towards a more impure O2 content (that is, lower than 95 mol %).
  • This is especially significant with a medium CO2 yield target (between 85 and 95%).
  • According to one object of the invention, it relates to an oxycombustion apparatus comprising an air separation unit in which oxygen is produced optionally by cryogenic distillation, an oxycombustion boiler, means for sending the oxygen and a fuel to the oxycombustion boiler, means for recovering carbon dioxide-containing flue gases from the oxycombustion boiler, and means for purifying the flue gases in order to extract carbon dioxide therefrom, characterized in that the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 95 mol %.
  • According to other aspects of the invention:
  • the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 90 mol %,
  • the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 85 mol %,
  • the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 80 mol %,
  • the apparatus comprises a double or triple air separation column, means for sending the air to the column operating at the highest pressure, the column operating at the lowest pressure containing two condensers, i.e. a chamber condenser and an intermediate condenser.
  • According to another object of the invention, it relates to an oxycombustion process in which oxygen is produced optionally by cryogenic distillation in an air separation unit, the oxygen and a fuel are sent to an oxycombustion boiler, flue gases containing carbon dioxide are recovered from the oxycombustion boiler, and the flue gases are purified to extract carbon dioxide therefrom, characterized in that the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 95 mol %.
  • According to other aspects of the invention:
  • the air separation unit produces oxygen to be sent to the boiler having a purity not exceeding 90 mol %,
  • the air separation unit produces oxygen to be sent to the boiler having a purity not exceeding 85 mol %,
  • the air separation unit produces oxygen to be sent to the boiler having a purity not exceeding 80 mol %.
    • BRIEF DESCRIPTION OF DRAWING
  • FIG. 1 is a schematic view of an oxycombustion apparatus in accordance with one embodiment of the present invention.
    •
  • The invention is described in greater detail with reference to the sole figure.
  • An air separation unit 2 produces an oxygen-rich stream 10 having a purity of 75 to 95 % and a waste nitrogen stream 13. The oxygen-rich stream 10 is divided into two to form two sub-streams 11 and 12. A recycle stream 15 is sent to the coal 14 spray unit 3. The stream 11 is mixed with the recycle stream 15 downstream of the unit 3 and the mixture is sent to the burners of the boiler 1. The stream 12 is mixed with a recycle stream 16 which supplies the burners. Water is sent to the boiler 1 to produce steam 18 to be expanded in the turbine 8. The waste gas 19 consisting of the CO2-rich oxycombustion flue gases, typically containing more than 70 mol % CO2, passes through several treatments to remove the impurities. Its composition is typically (dry basis):
  •
    Ar: 2 to 3%
    O2: 3%
    N2: 1 to 25%
    CO2: the remainder, not including SOx, NOx type
    impurities, etc.
  • These units may comprise a unit 4 for removing NOx, for example by reduction, a unit 5 for removing dust, for example by filtration, a unit 6 for desulphurization to remove SO2 and/or SO3. The units 4 and 6 may not be necessary depending on the CO2 purity required. The purified waste gas 24 is sent to the compression and purification unit 7 to produce a CO2-rich stream containing more than 85% CO2, or even more than 99% CO2, which can be recovered, and a waste stream 26.
  • The air separation unit 2 is preferably of the type comprising a double or triple air separation column with medium pressure column and low pressure column. The low pressure column comprises a chamber condenser and an intermediate condenser, the chamber condenser being heated by air or nitrogen and the intermediate condenser being heated by nitrogen. Such apparatus are known from EP-A-0538118 and U.S. Pat. No. 4,704,148.

Claims (11)

1. Oxycombustion apparatus comprising an air separation unit (2), an oxycombustion boiler (1), means for sending the oxygen and a fuel (14) to the oxycombustion boiler, means for recovering carbon dioxide-containing flue gases (19) from the oxycombustion boiler, and means (7) for purifying the flue gases in order to extract carbon dioxide therefrom, characterized in that the air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 95 mol %.
2. Apparatus according to claim 1, in which the oxygen produced by the air separation unit is by cryogenic distillation.
3. Apparatus according to claim 1, in which the air separation unit (2) is provided for producing oxygen to be sent to the boiler (1) having a purity not exceeding 90 mol %.
4. Apparatus according to claim 3, in which the air separation unit (2) is provided for producing oxygen to be sent to the boiler (1) having a purity not exceeding 85 mol %.
5. Apparatus according to claim 4, in which the air separation unit (2) is provided for producing oxygen to be sent to the boiler (1) having a purity not exceeding 80 mol %.
6. Apparatus according to claim 1 comprising a double or triple air separation column, means for sending the air to the column operating at the highest pressure, the column operating at the lowest pressure containing two condensers, i.e. a chamber condenser and an intermediate condenser.
7. Oxycombustion process in which oxygen and a fuel (14) are sent to an oxycombustion boiler (1), flue gases (19) containing carbon dioxide are recovered from the oxycombustion boiler, and the flue gases are purified to extract carbon dioxide therefrom, wherein an air separation unit is provided for producing oxygen to be sent to the boiler having a purity not exceeding 95 mol %.
8. Process according to claim 7, in which the oxygen is produced by cryogenic distillation in an air separation unit.
9. Process according to claim 7, in which the air separation unit (2) produces oxygen to be sent to the boiler (1) having a purity not exceeding 90 mol %.
10. Process according to claim 9, in which the air separation unit (2) produces oxygen to be sent to the boiler (1) having a purity not exceeding 85 mol %.
11. Process according to claim 10, in which the air separation unit (2) produces oxygen to be sent to the boiler (1) having a purity not exceeding 80 mol %.
US12/197,420 2008-04-07 2008-08-25 Apparatus and Process for Oxycombustion with CO2 Capture Abandoned US20090249988A1 (en)

Applications Claiming Priority (2)

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FR0852312 2008-04-07
FR0852312A FR2929686A1 (en) 2008-04-07 2008-04-07 APPARATUS AND METHOD FOR OXYCOMBUSTION WITH CO2 CAPTURE.

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
US20090277363A1 (en) * 2008-05-07 2009-11-12 Hitachi, Ltd. Oxyfuel Boiler System and Method of Retrofit of Air Fired Boiler to Oxyfuel Boiler
JP2012093002A (en) * 2010-10-25 2012-05-17 Babcock Hitachi Kk Boiler system and operation method therefor
US20120145052A1 (en) * 2010-11-16 2012-06-14 Alstom Technology Ltd. Apparatus and method of controlling the thermal performance of an oxygen-fired boiler
US20140272736A1 (en) * 2013-03-15 2014-09-18 Fives North American Combustion, Inc. Low NOx Combustion Method and Apparatus
CN105114945A (en) * 2015-09-29 2015-12-02 中国神华能源股份有限公司 Boiler system and flue gas and air system thereof
CN105889969A (en) * 2016-05-30 2016-08-24 广东上典环境保护工程有限公司 Nitrate-free combustion system capable of recycling carbon dioxide
CN105889947A (en) * 2016-05-30 2016-08-24 广东上典环境保护工程有限公司 Novel boiler non-nitrate combustion system

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US6935251B2 (en) * 2002-02-15 2005-08-30 American Air Liquide, Inc. Steam-generating combustion system and method for emission control using oxygen enhancement
RU2005116273A (en) * 2002-10-30 2005-11-10 Кребс Энд Сислер Лп (Us) BOILER WITH FUEL BURNING WHEN USING AN OXIDATOR, ENRICHED WITH OXYGEN, TO INCREASE EFFICIENCY AND REDUCE HARMFUL EMISSIONS
US6898936B1 (en) * 2002-12-04 2005-05-31 The United States Of America As Represented By The United States Department Of Energy Compression stripping of flue gas with energy recovery
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090277363A1 (en) * 2008-05-07 2009-11-12 Hitachi, Ltd. Oxyfuel Boiler System and Method of Retrofit of Air Fired Boiler to Oxyfuel Boiler
JP2012093002A (en) * 2010-10-25 2012-05-17 Babcock Hitachi Kk Boiler system and operation method therefor
US20120145052A1 (en) * 2010-11-16 2012-06-14 Alstom Technology Ltd. Apparatus and method of controlling the thermal performance of an oxygen-fired boiler
US9752773B2 (en) * 2010-11-16 2017-09-05 General Electric Technology Gmbh Apparatus and method of controlling the thermal performance of an oxygen-fired boiler
US20140272736A1 (en) * 2013-03-15 2014-09-18 Fives North American Combustion, Inc. Low NOx Combustion Method and Apparatus
US9909755B2 (en) * 2013-03-15 2018-03-06 Fives North American Combustion, Inc. Low NOx combustion method and apparatus
CN105114945A (en) * 2015-09-29 2015-12-02 中国神华能源股份有限公司 Boiler system and flue gas and air system thereof
CN105889969A (en) * 2016-05-30 2016-08-24 广东上典环境保护工程有限公司 Nitrate-free combustion system capable of recycling carbon dioxide
CN105889947A (en) * 2016-05-30 2016-08-24 广东上典环境保护工程有限公司 Novel boiler non-nitrate combustion system

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