Super low NO.sub.x, high efficiency, compact firetube boiler

Chojnacki, Dennis A.; Rabovitser, Iosif K.; Knight, Richard A.; Cygan, David F.; Korenberg, Jacob

Title: Super low NO.sub.x, high efficiency, compact firetube boiler

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Abstract

A firetube boiler furnace having two combustion sections and an in-line intermediate tubular heat transfer section between the two combustion sections and integral to the pressure vessel. This design provides a staged oxidant combustion apparatus with separate in-line combustion chambers for fuel-rich primary combustion and fuel-lean secondary combustion and sufficient cooling of the combustion products from the primary combustion such that when the secondary combustion oxidant is added in the secondary combustion stage, the NO.sub.x formation is less than 5 ppmv at 3% O.sub.2.

Inventors:: Chojnacki, Dennis A.; Rabovitser, Iosif K.; Knight, Richard A.; Cygan, David F.; Korenberg, Jacob

Issue Date:: 2005-12-06

Research Org.:: Gas Technology Institute, Des Plaines, IL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1175566

Patent Number(s):: 6971336

Application Number:: 11/029,946

Assignee:: Gas Technology Institute (Des Plaines, IL)

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 F22 - STEAM GENERATION F22B - METHODS OF STEAM GENERATION

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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
F23C9/006 - {the recirculation taking place in the combustion chamber}

F - MECHANICAL ENGINEERING F22 - STEAM GENERATION F22B - METHODS OF STEAM GENERATION
F22B7/12 - with auxiliary fire tubes

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
F23C6/042 - {with fuel supply in stages
F23C2900/06041 - Staged supply of oxidant

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DOE Contract Number:: FC36-00ID13904

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Chojnacki, Dennis A., Rabovitser, Iosif K., Knight, Richard A., Cygan, David F., and Korenberg, Jacob. Super low NO.sub.x, high efficiency, compact firetube boiler.  United States: N. p., 2005. 
        Web.

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                    Chojnacki, Dennis A., Rabovitser, Iosif K., Knight, Richard A., Cygan, David F., & Korenberg, Jacob. Super low NO.sub.x, high efficiency, compact firetube boiler.  United States.

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                    Chojnacki, Dennis A., Rabovitser, Iosif K., Knight, Richard A., Cygan, David F., and Korenberg, Jacob. Tue .  
        "Super low NO.sub.x, high efficiency, compact firetube boiler".  United States.  https://www.osti.gov/servlets/purl/1175566.

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@article{osti_1175566,

  title        = {Super low NO.sub.x, high efficiency, compact firetube boiler},

  author       = {Chojnacki, Dennis A. and Rabovitser, Iosif K. and Knight, Richard A. and Cygan, David F. and Korenberg, Jacob},

  abstractNote = {A firetube boiler furnace having two combustion sections and an in-line intermediate tubular heat transfer section between the two combustion sections and integral to the pressure vessel. This design provides a staged oxidant combustion apparatus with separate in-line combustion chambers for fuel-rich primary combustion and fuel-lean secondary combustion and sufficient cooling of the combustion products from the primary combustion such that when the secondary combustion oxidant is added in the secondary combustion stage, the NO.sub.x formation is less than 5 ppmv at 3% O.sub.2.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2005},

  month        = {12}

}

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