JPS5469835A - Combustion method with reduced nitrogen oxides - Google Patents

Combustion method with reduced nitrogen oxides

Info

Publication number
JPS5469835A
JPS5469835A JP13640977A JP13640977A JPS5469835A JP S5469835 A JPS5469835 A JP S5469835A JP 13640977 A JP13640977 A JP 13640977A JP 13640977 A JP13640977 A JP 13640977A JP S5469835 A JPS5469835 A JP S5469835A
Authority
JP
Japan
Prior art keywords
oxygen
volume
nitrogen oxides
exhaust gas
added
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
JP13640977A
Other languages
Japanese (ja)
Other versions
JPS5819928B2 (en
Inventor
Nobuaki Murakami
Kikuo Tokunaga
Yutaka Yamashita
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 JP52136409A priority Critical patent/JPS5819928B2/en
Publication of JPS5469835A publication Critical patent/JPS5469835A/en
Publication of JPS5819928B2 publication Critical patent/JPS5819928B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To improve reduction rate of nitrogen oxides by adding small amount of oxygen for its predominate decomposition to nitrogen.
CONSTITUTION: Part of exhaust gas containing residual oxygen is taken off from a flue by a fan 8, oxygen in 0 to 0.3 volume % of the total exhaust gas volume generated from a furnace 1a is added thereto, and is burned with an air supplied through a supply line 7 in a volume sufficient to burn out uncombustioned part of the exhaust gas. When the volume of added oxygen is less then 3%, the reaction NH3, HCN+O2 → N2, H2O becomes predominant and the conversion to NOx usually occur in the combustion of unburned part is prevented thereby substantially improving the removal efficiency of nitrogen oxides.
COPYRIGHT: (C)1979,JPO&Japio
JP52136409A 1977-11-14 1977-11-14 Nitrogen oxide reduction combustion method Expired JPS5819928B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52136409A JPS5819928B2 (en) 1977-11-14 1977-11-14 Nitrogen oxide reduction combustion method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52136409A JPS5819928B2 (en) 1977-11-14 1977-11-14 Nitrogen oxide reduction combustion method

Publications (2)

Publication Number Publication Date
JPS5469835A true JPS5469835A (en) 1979-06-05
JPS5819928B2 JPS5819928B2 (en) 1983-04-20

Family

ID=15174477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52136409A Expired JPS5819928B2 (en) 1977-11-14 1977-11-14 Nitrogen oxide reduction combustion method

Country Status (1)

Country Link
JP (1) JPS5819928B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56130513A (en) * 1980-03-19 1981-10-13 Mitsubishi Heavy Ind Ltd Combustion with low nox
JPS5787505A (en) * 1980-11-21 1982-06-01 Mitsubishi Heavy Ind Ltd Combustion process with reduction of nitrogen oxides
JPS5833019A (en) * 1981-08-21 1983-02-26 Mitsubishi Heavy Ind Ltd Method of reducing nitrogen oxides in combustion exhaust gas
JPS59157406A (en) * 1983-02-25 1984-09-06 Hitachi Zosen Corp Process for preventing generation of nox in triple-stage combustion

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413015A (en) * 1977-06-30 1979-01-31 Showa Denko Kk Process for decreasing nox

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413015A (en) * 1977-06-30 1979-01-31 Showa Denko Kk Process for decreasing nox

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56130513A (en) * 1980-03-19 1981-10-13 Mitsubishi Heavy Ind Ltd Combustion with low nox
JPS5787505A (en) * 1980-11-21 1982-06-01 Mitsubishi Heavy Ind Ltd Combustion process with reduction of nitrogen oxides
JPS5833019A (en) * 1981-08-21 1983-02-26 Mitsubishi Heavy Ind Ltd Method of reducing nitrogen oxides in combustion exhaust gas
JPH0130044B2 (en) * 1981-08-21 1989-06-15 Mitsubishi Heavy Ind Ltd
JPS59157406A (en) * 1983-02-25 1984-09-06 Hitachi Zosen Corp Process for preventing generation of nox in triple-stage combustion

Also Published As

Publication number Publication date
JPS5819928B2 (en) 1983-04-20

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