JPS5795507A - Operation of combustion furnace - Google Patents

Operation of combustion furnace

Info

Publication number
JPS5795507A
JPS5795507A JP55170237A JP17023780A JPS5795507A JP S5795507 A JPS5795507 A JP S5795507A JP 55170237 A JP55170237 A JP 55170237A JP 17023780 A JP17023780 A JP 17023780A JP S5795507 A JPS5795507 A JP S5795507A
Authority
JP
Japan
Prior art keywords
burner
recirculating
gas
furnace
exhaust 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.)
Granted
Application number
JP55170237A
Other languages
Japanese (ja)
Other versions
JPH0117045B2 (en
Inventor
Naoaki Hotta
Shoichi Masuko
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 Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP55170237A priority Critical patent/JPS5795507A/en
Publication of JPS5795507A publication Critical patent/JPS5795507A/en
Publication of JPH0117045B2 publication Critical patent/JPH0117045B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Combustion Of Fluid Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

PURPOSE: To reduce NOx originating from a burner by recirculating a part of exhaust gas via a burner throat, when a boiler is put in start-up or low-load operation, in the combustion furnace equipped with the burner, burner throat and the exhaust gas recirculating system.
CONSTITUTION: A boiler 1 has its furnace 2 provided with a burner 3 and a burner throat 4 as well as its top with an exhaust gas flue 6. Recirculating gas is led to gas recirculating duct 7 which brances off from the exhaust gas flue 6 to a gas recirculating fan inlet damper 10A, a furnace bottom inlet damper 11 and finally to the furnace 2. When the boiler 1 is put in start-up or low-load operation, a part of the recirculating gas from the gas recirculating fan 9 is sent to branch duct 8 to be pressure-fed via a fan 10 into a wind box 5 and then into the furnace 2 via the burner throat 4. With this, the gas velocity necessary for the burner throat 4 is secured to enable reduction in NOx originating from the burner 3.
COPYRIGHT: (C)1982,JPO&Japio
JP55170237A 1980-12-04 1980-12-04 Operation of combustion furnace Granted JPS5795507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55170237A JPS5795507A (en) 1980-12-04 1980-12-04 Operation of combustion furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55170237A JPS5795507A (en) 1980-12-04 1980-12-04 Operation of combustion furnace

Publications (2)

Publication Number Publication Date
JPS5795507A true JPS5795507A (en) 1982-06-14
JPH0117045B2 JPH0117045B2 (en) 1989-03-28

Family

ID=15901203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55170237A Granted JPS5795507A (en) 1980-12-04 1980-12-04 Operation of combustion furnace

Country Status (1)

Country Link
JP (1) JPS5795507A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137707A (en) * 1983-01-25 1984-08-07 Babcock Hitachi Kk Boiler device
JP2013221639A (en) * 2012-04-13 2013-10-28 Mitsubishi Heavy Ind Ltd Combustion device for boiler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53438A (en) * 1976-06-23 1978-01-06 Babcock Hitachi Kk Combustion method and apparatus
JPS5520123A (en) * 1978-07-17 1980-02-13 Nippon Pirooburotsuku Seizou K Crack detector for bottle head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53438A (en) * 1976-06-23 1978-01-06 Babcock Hitachi Kk Combustion method and apparatus
JPS5520123A (en) * 1978-07-17 1980-02-13 Nippon Pirooburotsuku Seizou K Crack detector for bottle head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137707A (en) * 1983-01-25 1984-08-07 Babcock Hitachi Kk Boiler device
JPH0343523B2 (en) * 1983-01-25 1991-07-02 Babcock Hitachi Kk
JP2013221639A (en) * 2012-04-13 2013-10-28 Mitsubishi Heavy Ind Ltd Combustion device for boiler

Also Published As

Publication number Publication date
JPH0117045B2 (en) 1989-03-28

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