Title: Apparatus and method of controlling the thermal performance of an oxygen-fired boiler

Abstract

Disclosed herein is a method of controlling the operation of an oxy-fired boiler; the method comprising combusting a fuel in a boiler; producing a heat absorption pattern in the boiler; discharging flue gases from the boiler; recycling a portion of the flue gases to the boiler; combining a first oxidant stream with the recycled flue gases to form a combined stream; splitting the combined stream into several fractions; and introducing each fraction of the combined stream to the boiler at different points of entry to the boiler.

Inventors:

Levasseur, Armand A.; Kang, Shin G.; Kenney, James R.; Edberg, Carl D.

Issue Date:

2017-09-05

Research Org.:

GENERAL ELECTRIC TECHNOLOGY GMBH, Baden, CH (Switzerland)

Sponsoring Org.:

USDOE

OSTI Identifier:

1379206

Patent Number(s):

9752773

Application Number:

13/298,147

Assignee:

GENERAL ELECTRIC TECHNOLOGY GMBH

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 

F23C2201/101 - in vertical direction, e.g. alternating lean and rich zones
F23C2202/30 - Premixing fluegas with combustion air
F23C5/12 - {for pulverulent fuel}
F23C9/00 - Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber

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
F23L7/007 - {Supplying oxygen or oxygen-enriched air}
F23L9/04 - by discharging the air beyond the fire, i.e. nearer the smoke outlet

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23N - REGULATING OR CONTROLLING COMBUSTION

F23N1/022 - {using electronic means}

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

Y02E20/32 - Direct CO2 mitigation
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

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DOE Contract Number:  

NT0005290

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Nov 16

Country of Publication:

United States

Language:

English

Subject:

20 FOSSIL-FUELED POWER PLANTS