EP0225157A3 - Method and apparatus for reduced nox emissions from coal furnaces - Google Patents

Method and apparatus for reduced nox emissions from coal furnaces Download PDF

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Publication number
EP0225157A3
EP0225157A3 EP86309192A EP86309192A EP0225157A3 EP 0225157 A3 EP0225157 A3 EP 0225157A3 EP 86309192 A EP86309192 A EP 86309192A EP 86309192 A EP86309192 A EP 86309192A EP 0225157 A3 EP0225157 A3 EP 0225157A3
Authority
EP
European Patent Office
Prior art keywords
fuel
entrapped
streams
primary air
burner
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP86309192A
Other languages
German (de)
French (fr)
Other versions
EP0225157A2 (en
Inventor
Josef Markstein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Combustion Australia Ltd
Original Assignee
International Combustion Australia Ltd
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 International Combustion Australia Ltd filed Critical International Combustion Australia Ltd
Priority claimed from AU65732/86A external-priority patent/AU592388B2/en
Publication of EP0225157A2 publication Critical patent/EP0225157A2/en
Publication of EP0225157A3 publication Critical patent/EP0225157A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
    • 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
    • F23C6/047—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 with fuel supply in stages
    • 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 
    • F23C2201/00—Staged combustion
    • F23C2201/10—Furnace staging
    • F23C2201/101—Furnace staging in vertical direction, e.g. alternating lean and rich zones
    • 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 
    • F23C2201/00—Staged combustion
    • F23C2201/30—Staged fuel supply
    • F23C2201/301—Staged fuel supply with different fuels in stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00—Pretreatment of solid fuel
    • F23K2201/10—Pulverizing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The present invention discloses a method of, and apparatus for, reducing NOx emissions from black coal fired updraught furnaces (20). The pulverised coal is entrapped in the "primary air" and separated into two streams, one fuel rich (13) and one fuel lean (15). These streams are introduced into the furnace (20) via a corresponding burner(s) (14,16) with the burner(s) (16) for the fuel lean stream (15) being located at an elevation above the burner(s) (14) for the fuel rich stream (13).
The apparatus comprises a concentrator (3) positioned between the substantially conventional mill (1) and furnace (20) and arranged to split the primary air and entrapped fuel into the two abovementioned streams. The concentrator preferably includes a classifier (8) and takes the form of a swirl generator (5) and radially positioned outlets which make use of the action of centrifugal force on the "primary air" and entrapped coal particles to bring about the desired separation.
EP86309192A 1985-11-26 1986-11-25 Method and apparatus for reduced nox emissions from coal furnaces Withdrawn EP0225157A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU3580/85 1985-11-26
AUPH358085 1985-11-26
AU65732/86A AU592388B2 (en) 1985-11-26 1986-11-26 Concentrator-classifier apparatus for reduced nox emissions from coal furnaces

Publications (2)

Publication Number Publication Date
EP0225157A2 EP0225157A2 (en) 1987-06-10
EP0225157A3 true EP0225157A3 (en) 1987-09-30

Family

ID=25634883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86309192A Withdrawn EP0225157A3 (en) 1985-11-26 1986-11-25 Method and apparatus for reduced nox emissions from coal furnaces

Country Status (1)

Country Link
EP (1) EP0225157A3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2813361B2 (en) * 1989-03-03 1998-10-22 三菱重工業株式会社 Pulverized coal combustion method
JP2540636B2 (en) * 1989-11-20 1996-10-09 三菱重工業株式会社 boiler
FR2658589B1 (en) * 1990-02-20 1995-03-31 Stein Industrie METHOD FOR SUPPLYING A BOILER FIRE WITH PULVERIZED COAL AND AIR, SEPARATOR FOR CARRYING OUT SAID METHOD, AND DEVICE FOR SUPPLYING POWDERED COAL AND AIR TO A BOILER FIRE ACCORDING TO THIS PROCESS.
FR2679980B1 (en) * 1991-08-02 1997-11-14 Stein Industrie HEATING DEVICE FOR PULVERIZED COAL BOILERS USING TANGENTIAL HEATING FOR THE PURPOSE OF REDUCING EMISSIONS OF NITROGEN OXIDES.
RU2067724C1 (en) * 1994-12-29 1996-10-10 Малое государственное внедренческое предприятие "Политехэнерго" Low-emission swirling-type furnace
EP2993400B1 (en) 2014-09-02 2019-08-14 General Electric Technology GmbH A combustion system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB965898A (en) * 1962-07-28 1964-08-06 Babcock & Wilcox Ltd Improvements in apparatus for firing pulverised fuel
FR1591095A (en) * 1968-09-27 1970-04-27
AU495676B2 (en) * 1974-06-04 1976-12-09 International Combustion Australia Ltd. Improvement of partial separation firing
US4173189A (en) * 1977-01-21 1979-11-06 Combustion Engineering, Inc. Boiler cold start using pulverized coal in ignitor burners
US4238210A (en) * 1979-04-26 1980-12-09 Siegfried Bulang Particle-removal apparatus
DE2933528A1 (en) * 1979-08-18 1981-03-26 Deutsche Babcock AG, 46049 Oberhausen Vapour-separation equipment for furnace burner - has fixed blades in pipe preceded by adjustable-angle swirl blades
DE3122476A1 (en) * 1981-06-05 1982-12-23 Ivan Matveevič Dianov Dust separator
DE3124571A1 (en) * 1981-06-23 1983-06-01 Podol'skij Mašinostroite'lnyj zavod imeni Ordžonikidze, Podol'sk Device for distributing fuel dust to ducts of burners
JPS58138906A (en) * 1982-02-15 1983-08-18 Babcock Hitachi Kk Low nox combustion device
DE3317244A1 (en) * 1982-07-16 1984-01-26 ORGREB-Institut für Kraftwerke, DDR 7544 Vetschau Method and arrangement for the starting of adjacent coal dust fired steam generators

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB965898A (en) * 1962-07-28 1964-08-06 Babcock & Wilcox Ltd Improvements in apparatus for firing pulverised fuel
FR1591095A (en) * 1968-09-27 1970-04-27
AU495676B2 (en) * 1974-06-04 1976-12-09 International Combustion Australia Ltd. Improvement of partial separation firing
US4173189A (en) * 1977-01-21 1979-11-06 Combustion Engineering, Inc. Boiler cold start using pulverized coal in ignitor burners
US4238210A (en) * 1979-04-26 1980-12-09 Siegfried Bulang Particle-removal apparatus
DE2933528A1 (en) * 1979-08-18 1981-03-26 Deutsche Babcock AG, 46049 Oberhausen Vapour-separation equipment for furnace burner - has fixed blades in pipe preceded by adjustable-angle swirl blades
DE3122476A1 (en) * 1981-06-05 1982-12-23 Ivan Matveevič Dianov Dust separator
DE3124571A1 (en) * 1981-06-23 1983-06-01 Podol'skij Mašinostroite'lnyj zavod imeni Ordžonikidze, Podol'sk Device for distributing fuel dust to ducts of burners
JPS58138906A (en) * 1982-02-15 1983-08-18 Babcock Hitachi Kk Low nox combustion device
DE3317244A1 (en) * 1982-07-16 1984-01-26 ORGREB-Institut für Kraftwerke, DDR 7544 Vetschau Method and arrangement for the starting of adjacent coal dust fired steam generators

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 254 (M-255)[1399], 11th November 1983; & JP-A-58 138 906 (BABCOCK HITACHI K.K.) 18-08-1983 *
REVUE GENERALE DE THERMIQUE, vol. 12, no. 144, December 1973, pages 1255-1262, Paris, FR; D.L. PAPADIAS: "L'utilisation des lignite et tourbe grecs pour la production de vapeur" *

Also Published As

Publication number Publication date
EP0225157A2 (en) 1987-06-10

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Inventor name: MARKSTEIN, JOSEF