JPS5644504A - Method of combusting pulverized coal in pluverized coal combusting furnace - Google Patents

Method of combusting pulverized coal in pluverized coal combusting furnace

Info

Publication number
JPS5644504A
JPS5644504A JP12001779A JP12001779A JPS5644504A JP S5644504 A JPS5644504 A JP S5644504A JP 12001779 A JP12001779 A JP 12001779A JP 12001779 A JP12001779 A JP 12001779A JP S5644504 A JPS5644504 A JP S5644504A
Authority
JP
Japan
Prior art keywords
combusting
zone
coal
air
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.)
Pending
Application number
JP12001779A
Other languages
Japanese (ja)
Inventor
Akira Dewa
Tomoyuki Shinano
Sukeyoshi Shibayama
Chikatoshi Kurata
Kenichi Fujii
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki 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 Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP12001779A priority Critical patent/JPS5644504A/en
Publication of JPS5644504A publication Critical patent/JPS5644504A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To minimize generation of NOx positively to a level lower than 100ppm, by employing such an arrangement that the mixing rate of exhaust gas to combusting air is 35W60% at a primary stage and 25W35% at a second stage.
CONSTITUTION: The mixing rate of exhaust gas to primary air issued from a combusting air outlet port 1 is selected to be 35W60%, whereas that of exhaust gas to secondary air issued from annular outlet ports 3, 4 is selected to be 25W35%. With such an arrangement, semiluminous flame is produced in a primary flame zone 5 by slow low-temperature combustion, since the amount of O2 is extremely small in the zone 5. In a secondary flame zone 6, on the other hand, there exists O2 at a low density since combustion is slow, although air is lacked generally in zone 6. NOx generated on the upstream side is reduced to N2 through reaction with the above-mentioned O2 in the secondary flame zone 6. Therefore, it is enabled to reduce generation of NOx positively to a level lower than 100ppm.
COPYRIGHT: (C)1981,JPO&Japio
JP12001779A 1979-09-20 1979-09-20 Method of combusting pulverized coal in pluverized coal combusting furnace Pending JPS5644504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12001779A JPS5644504A (en) 1979-09-20 1979-09-20 Method of combusting pulverized coal in pluverized coal combusting furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12001779A JPS5644504A (en) 1979-09-20 1979-09-20 Method of combusting pulverized coal in pluverized coal combusting furnace

Publications (1)

Publication Number Publication Date
JPS5644504A true JPS5644504A (en) 1981-04-23

Family

ID=14775837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12001779A Pending JPS5644504A (en) 1979-09-20 1979-09-20 Method of combusting pulverized coal in pluverized coal combusting furnace

Country Status (1)

Country Link
JP (1) JPS5644504A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60202204A (en) * 1984-03-27 1985-10-12 Hitachi Ltd pulverized coal combustion burner
US4732093A (en) * 1986-02-11 1988-03-22 J. R. Tucker And Associates Annular nozzle burner and method of operation
US4768948A (en) * 1986-02-11 1988-09-06 J. R. Tucker & Associates Annular nozzle burner and method of operation
JP2015014451A (en) * 2014-09-11 2015-01-22 三菱日立パワーシステムズ株式会社 Fuel burner, solid fuel firing burner, and solid fuel firing boiler
US9869469B2 (en) 2009-12-22 2018-01-16 Mitsubishi Heavy Industries, Ltd. Combustion burner and boiler including the same
US10281142B2 (en) 2009-12-17 2019-05-07 Mitsubishi Heavy Industries, Ltd. Solid-fuel-fired burner and solid-fuel-fired boiler

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5069633A (en) * 1973-05-09 1975-06-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5069633A (en) * 1973-05-09 1975-06-10

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60202204A (en) * 1984-03-27 1985-10-12 Hitachi Ltd pulverized coal combustion burner
US4732093A (en) * 1986-02-11 1988-03-22 J. R. Tucker And Associates Annular nozzle burner and method of operation
US4768948A (en) * 1986-02-11 1988-09-06 J. R. Tucker & Associates Annular nozzle burner and method of operation
US10281142B2 (en) 2009-12-17 2019-05-07 Mitsubishi Heavy Industries, Ltd. Solid-fuel-fired burner and solid-fuel-fired boiler
US9869469B2 (en) 2009-12-22 2018-01-16 Mitsubishi Heavy Industries, Ltd. Combustion burner and boiler including the same
JP2015014451A (en) * 2014-09-11 2015-01-22 三菱日立パワーシステムズ株式会社 Fuel burner, solid fuel firing burner, and solid fuel firing boiler

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