Oxy-fired boiler unit and method of operating the same

Title: Oxy-fired boiler unit and method of operating the same

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Abstract

An oxy-combustion boiler unit is disclosed which includes a furnace for combusting fuel and for emitting flue gas resulting from combustion. The furnace has first, second and third combustion zones, and an air separation unit for separating oxygen gas from air and providing a first portion of the separated oxygen to a first oxidant flow, a second portion to a second oxidant flow, and a third portion of the separated oxygen gas to the first, second, and third zones of the furnace. A controller can cause the separated oxygen gas to be distributed so that the first and second oxygen flows have a desired oxygen content, and so that the first, second, and third zones of the furnace receive a desired amount of oxygen based on a combustion zone stoichiometry control.

Inventors:: Lou, Xinsheng; Zhang, Jundong; Joshi, Abhinaya; McCombe, James A.; Levasseur, Armand A.

Issue Date:: 2016-12-06

Research Org.:: GENERAL ELECTRIC TECHNOLOGY GMBH, Baden, CH (Switzerland)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1334660

Patent Number(s):: 9513001

Application Number:: 14/030,442

Assignee:: GENERAL ELECTRIC TECHNOLOGY GMBH (Baden, CH

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23L - SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL

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F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR
F23C2202/30 - Premixing fluegas with combustion air
F23C9/003 - {for pulverulent fuel

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23L - SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL
F23L2900/07007 - using specific ranges of oxygen percentage
F23L7/007 - {Supplying oxygen or oxygen-enriched air}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES 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
Y02E20/34 - Indirect CO2 mitigation, i.e. by acting on non CO2 directly related matters of the process, e.g. more efficient use of fuels
Y02E20/32 - Direct CO2 mitigation

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23N - REGULATING OR CONTROLLING COMBUSTION
F23N5/006 - {the detector being sensitive to oxygen}

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR
F23C6/04 - in series connection

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23L - SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL
F23L2900/07005 - Injecting pure oxygen or oxygen enriched air

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR
F23C7/008 - {Flow control devices
F23C6/045 - {with staged combustion in a single enclosure}

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23N - REGULATING OR CONTROLLING COMBUSTION
F23N3/00 - Regulating air supply or draught
F23N2221/08 - Preheating the air

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23L - SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL
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 F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR
F23C2900/06041 - Staged supply of oxidant

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23L - SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL
F23L2900/07006 - Control of the oxygen supply

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23N - REGULATING OR CONTROLLING COMBUSTION
F23N2237/26 - oxygen-air ratio

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23L - SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL
F23L15/00 - Heating of air supplied for combustion

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR
F23C2201/101 - in vertical direction, e.g. alternating lean and rich zones

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DOE Contract Number:: NT0005290

Resource Type:: Patent

Resource Relation:: Patent File Date: 2013 Sep 18

Country of Publication:: United States

Language:: English

Subject:: 20 FOSSIL-FUELED POWER PLANTS; 42 ENGINEERING

Citation Formats


                    Lou, Xinsheng, Zhang, Jundong, Joshi, Abhinaya, McCombe, James A., and Levasseur, Armand A.. Oxy-fired boiler unit and method of operating the same.  United States: N. p., 2016. 
        Web.

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                    Lou, Xinsheng, Zhang, Jundong, Joshi, Abhinaya, McCombe, James A., & Levasseur, Armand A.. Oxy-fired boiler unit and method of operating the same.  United States.

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                    Lou, Xinsheng, Zhang, Jundong, Joshi, Abhinaya, McCombe, James A., and Levasseur, Armand A.. Tue .  
        "Oxy-fired boiler unit and method of operating the same".  United States.  https://www.osti.gov/servlets/purl/1334660.

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@article{osti_1334660,

  title        = {Oxy-fired boiler unit and method of operating the same},

  author       = {Lou, Xinsheng and Zhang, Jundong and Joshi, Abhinaya and McCombe, James A. and Levasseur, Armand A.},

  abstractNote = {An oxy-combustion boiler unit is disclosed which includes a furnace for combusting fuel and for emitting flue gas resulting from combustion. The furnace has first, second and third combustion zones, and an air separation unit for separating oxygen gas from air and providing a first portion of the separated oxygen to a first oxidant flow, a second portion to a second oxidant flow, and a third portion of the separated oxygen gas to the first, second, and third zones of the furnace. A controller can cause the separated oxygen gas to be distributed so that the first and second oxygen flows have a desired oxygen content, and so that the first, second, and third zones of the furnace receive a desired amount of oxygen based on a combustion zone stoichiometry control.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2016},

  month        = {12}

}

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