JPS57188908A - Combustion of reducing nitrogen oxide - Google Patents

Combustion of reducing nitrogen oxide

Info

Publication number
JPS57188908A
JPS57188908A JP7438681A JP7438681A JPS57188908A JP S57188908 A JPS57188908 A JP S57188908A JP 7438681 A JP7438681 A JP 7438681A JP 7438681 A JP7438681 A JP 7438681A JP S57188908 A JPS57188908 A JP S57188908A
Authority
JP
Japan
Prior art keywords
line
air
zone
main combustion
gas
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.)
Pending
Application number
JP7438681A
Other languages
Japanese (ja)
Inventor
Nobuaki Murakami
Kikuo Tokunaga
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP7438681A priority Critical patent/JPS57188908A/en
Publication of JPS57188908A publication Critical patent/JPS57188908A/en
Pending legal-status Critical Current

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 
    • 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

Landscapes

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

Abstract

PURPOSE:To reduce NOx by a method wherein fossil fuel is burnt in excessive air to form main combustion, coal gas is added to a high temperature zone at the down-stream of the main combustion and the air is supplied to the further downstream. CONSTITUTION:In driving a boiler 10, first, coal and air are sent respectively from line 2 and line 3 to a gasifying furnace 1 to gasify coal. About 10-30% of gas produced here is supplied from line 9 through the main furnace 13 to a high temperature part at the downstream zone of the main combustion zone 11 and the other gas is supplied similarly to the main combustion zone 11 through line 8. The air of quantity more than necessary to burn the produced gas completely is fed to the main combustion zone 11 through lines 5, 6. Then, the NOx produced at the zone 11 is reduced to N2 by high temperature vapor phase reaction by using reducing material and released from pollution. Further, unburnt gas is burnt by air supplied from line 7.
JP7438681A 1981-05-18 1981-05-18 Combustion of reducing nitrogen oxide Pending JPS57188908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7438681A JPS57188908A (en) 1981-05-18 1981-05-18 Combustion of reducing nitrogen oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7438681A JPS57188908A (en) 1981-05-18 1981-05-18 Combustion of reducing nitrogen oxide

Publications (1)

Publication Number Publication Date
JPS57188908A true JPS57188908A (en) 1982-11-20

Family

ID=13545677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7438681A Pending JPS57188908A (en) 1981-05-18 1981-05-18 Combustion of reducing nitrogen oxide

Country Status (1)

Country Link
JP (1) JPS57188908A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121929A (en) * 2008-10-22 2010-06-03 Mitsubishi Heavy Ind Ltd Pulverulent fuel burning combustor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121929A (en) * 2008-10-22 2010-06-03 Mitsubishi Heavy Ind Ltd Pulverulent fuel burning combustor

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