PL422473A1 - A method to reduce NOx emissions of NOx in a circulating fluidized bed boiler and its application - Google Patents

A method to reduce NOx emissions of NOx in a circulating fluidized bed boiler and its application

Info

Publication number
PL422473A1
PL422473A1 PL422473A PL42247316A PL422473A1 PL 422473 A1 PL422473 A1 PL 422473A1 PL 422473 A PL422473 A PL 422473A PL 42247316 A PL42247316 A PL 42247316A PL 422473 A1 PL422473 A1 PL 422473A1
Authority
PL
Poland
Prior art keywords
blowing
furnace
fluidized bed
fuel
nox
Prior art date
Application number
PL422473A
Other languages
Polish (pl)
Inventor
Pauli Dernjatin
Perttu Jukola
Sirpa Kallio
Original Assignee
Fortum Oyj
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 Fortum Oyj filed Critical Fortum Oyj
Publication of PL422473A1 publication Critical patent/PL422473A1/en

Links

Classifications

    • 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 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • 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 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/002—Fluidised bed combustion apparatus for pulverulent solid fuel
    • 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
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F23L1/02—Passages or apertures for delivering primary air for combustion  by discharging the air below the fire
    • 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 
    • F23C10/00—Fluidised bed combustion apparatus
    • 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 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
    • 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 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • 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
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire
    • 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
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air beyond the fire, i.e. nearer the smoke outlet

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

Niniejszy wynalazek dotyczy sposobu do redukcji emisji tlenków azotu NOx w kotle z cyrkulującym złożem fluidalnym (kocioł CFB), który to kocioł CFB zawiera palenisko (1), przy czym palenisko zawiera dno i materiał fluidalnego złoża (2). Sposób obejmuje nadmuch pierwotnego powietrza z dołu przez dno i materiał złoża do paleniska, w celu fluidyzacji materiału złoża i wychwytywania przynajmniej części materiału złoża, w celu cyrkulowania go w palenisku; nadmuch wtórnego powietrza do paleniska na wysokości powyżej nadmuchu pierwotnego powietrza, w celu substechiometrycznego spalania paliwa; i nadmuchu paliwa do paleniska na wysokości powyżej nadmuchu pierwotnego powietrza, w celu spalania paliwa. Sposób charakteryzuje się tym, że obejmuje nadmuch powietrza w górnej części komory paleniskowej (technologia OFA) na wysokości powyżej nadmuchu wtórnego powietrza, w celu superstechiometrycznego spalania paliwa.The present invention relates to a method for reducing nitrogen oxides NOx emissions in a circulating fluidized bed boiler (CFB boiler), which CFB boiler comprises a furnace (1), the furnace comprising a bottom and fluidized bed material (2). The method includes blowing primary air from below through the bottom and bed material to the furnace to fluidize the bed material and capture at least a portion of the bed material to circulate it in the furnace; blowing secondary air to the furnace at a height above the blowing of primary air for the purpose of substoichiometric combustion of fuel; and blowing fuel into the furnace at a height above the blowing of primary air to burn the fuel. The method is characterized in that it involves blowing air in the upper part of the furnace chamber (OFA technology) at a height above the blowing of the secondary air for superstoichiometric combustion of fuel.

PL422473A 2015-02-09 2016-02-08 A method to reduce NOx emissions of NOx in a circulating fluidized bed boiler and its application PL422473A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20155085A FI20155085A (en) 2015-02-09 2015-02-09 Method for reducing NOx emissions in a circulating fluidized bed boiler, circulating fluidized bed boiler and use thereof
PCT/FI2016/050078 WO2016128615A1 (en) 2015-02-09 2016-02-08 Method for nox reduction in a circulating fluidized bed boiler, a circulating fluidized bed boiler and use thereof

Publications (1)

Publication Number Publication Date
PL422473A1 true PL422473A1 (en) 2018-01-15

Family

ID=55349871

Family Applications (1)

Application Number Title Priority Date Filing Date
PL422473A PL422473A1 (en) 2015-02-09 2016-02-08 A method to reduce NOx emissions of NOx in a circulating fluidized bed boiler and its application

Country Status (4)

Country Link
FI (1) FI20155085A (en)
PL (1) PL422473A1 (en)
SE (1) SE1750990A1 (en)
WO (1) WO2016128615A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108800112B (en) * 2018-06-29 2019-05-31 安庆市凯瑞建材有限公司 A kind of low emission biomass circulating fluidized bed hot-blast stove of mortar production
CN109404895B (en) * 2018-12-13 2024-12-06 武汉挚裕技术有限公司 A biomass fluidized bed boiler device with top feeding
CN110906359B (en) * 2019-11-18 2021-05-11 上海发电设备成套设计研究院有限责任公司 Combustion device capable of adjusting secondary air temperature and using method
CN115374632B (en) * 2022-08-19 2024-01-26 南方电网电力科技股份有限公司 A calculation method and related devices for outlet flue gas in SNCR denitrification system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579070A (en) * 1985-03-01 1986-04-01 The M. W. Kellogg Company Reducing mode circulating fluid bed combustion
DE19622299C2 (en) * 1996-05-21 2000-10-12 Ver Energiewerke Ag Method for operating a pressure-charged circulating fluidized bed furnace for generating a workable gas for the gas turbine of a combined cycle power plant
US7410356B2 (en) * 2005-11-17 2008-08-12 Mobotec Usa, Inc. Circulating fluidized bed boiler having improved reactant utilization
CN103721552B (en) 2013-12-16 2016-08-17 东方电气集团东方锅炉股份有限公司 CFB furnace underload implements the method for SNCR denitration

Also Published As

Publication number Publication date
FI20155085A7 (en) 2016-08-10
SE1750990A1 (en) 2017-08-15
FI20155085A (en) 2016-08-10
WO2016128615A1 (en) 2016-08-18

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