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JPS5450471A - Treating method for nitrogen oxides contained in exhaust gas - Google Patents

Treating method for nitrogen oxides contained in exhaust gas

Info

Publication number
JPS5450471A
JPS5450471A JP11663777A JP11663777A JPS5450471A JP S5450471 A JPS5450471 A JP S5450471A JP 11663777 A JP11663777 A JP 11663777A JP 11663777 A JP11663777 A JP 11663777A JP S5450471 A JPS5450471 A JP S5450471A
Authority
JP
Japan
Prior art keywords
exhaust gas
added
temp
petroleum fuel
addn
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
JP11663777A
Other languages
Japanese (ja)
Other versions
JPS5827974B2 (en
Inventor
Nobuaki Murakami
Minoru Hashiguchi
Masayasu Sakai
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 JP52116637A priority Critical patent/JPS5827974B2/en
Publication of JPS5450471A publication Critical patent/JPS5450471A/en
Publication of JPS5827974B2 publication Critical patent/JPS5827974B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Incineration Of Waste (AREA)
  • Treating Waste Gases (AREA)

Abstract

PURPOSE: To remove NOx contained in exhaust gas economically and at a high denitration ratio, by addn. of petroleum fuel in a specific ratio of remaining O2 in high-temp. exhaust gas to O2 required for complete combustion of the added petroleum fuel, and by addn. of air for removing material not yet burned into the downstream side, then by addn. of high-temp. exhaust gas.
CONSTITUTION: Petroleum fuel is added in such a quantity that the ratio of O2 remaining in high-temp. exhaust gas, which is at 1.000W1,600°C and contains NOx having formed in a furnace 1a of a boiler 1, to O2 required for the complete combustion of the added petroleum fuel such as propane added through a line 2 is 1:0.2W1.2. Considerable portion of the NOx contained in the exhaust gas is converted to N2, and a portion to NH3, HCN etc. At a downstream side, at 700W 1,000°C, air sufficient for removing residual combustible material is added through a line 3. A small portion of NH3, HCN remains unconverted. To remove these cpds, high-temp. exhaust gas at 1,000W1,600°C is added through a line 4 in order to heat the exhaust gas to 900W950°C
COPYRIGHT: (C)1979,JPO&Japio
JP52116637A 1977-09-30 1977-09-30 Treatment method for nitrogen oxides in exhaust gas Expired JPS5827974B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52116637A JPS5827974B2 (en) 1977-09-30 1977-09-30 Treatment method for nitrogen oxides in exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52116637A JPS5827974B2 (en) 1977-09-30 1977-09-30 Treatment method for nitrogen oxides in exhaust gas

Publications (2)

Publication Number Publication Date
JPS5450471A true JPS5450471A (en) 1979-04-20
JPS5827974B2 JPS5827974B2 (en) 1983-06-13

Family

ID=14692122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52116637A Expired JPS5827974B2 (en) 1977-09-30 1977-09-30 Treatment method for nitrogen oxides in exhaust gas

Country Status (1)

Country Link
JP (1) JPS5827974B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5731710A (en) * 1980-07-30 1982-02-20 Kawasaki Heavy Ind Ltd Method of low nox combustion and combustor therefor
US5531973A (en) * 1994-02-18 1996-07-02 The Babcock & Wilcox Company Production of plasma generated NOx reducing precursors from a molecular nitrogen and hydrocarbon mixture
US7168947B2 (en) * 2004-07-06 2007-01-30 General Electric Company Methods and systems for operating combustion systems
JP2009521312A (en) * 2005-12-21 2009-06-04 プラクスエア・テクノロジー・インコーポレイテッド Reduction of CO and NOx in regenerator flue gas

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5731710A (en) * 1980-07-30 1982-02-20 Kawasaki Heavy Ind Ltd Method of low nox combustion and combustor therefor
JPS6116884B2 (en) * 1980-07-30 1986-05-02 Kawasaki Jukogyo Kk
US5531973A (en) * 1994-02-18 1996-07-02 The Babcock & Wilcox Company Production of plasma generated NOx reducing precursors from a molecular nitrogen and hydrocarbon mixture
US7168947B2 (en) * 2004-07-06 2007-01-30 General Electric Company Methods and systems for operating combustion systems
JP2009521312A (en) * 2005-12-21 2009-06-04 プラクスエア・テクノロジー・インコーポレイテッド Reduction of CO and NOx in regenerator flue gas

Also Published As

Publication number Publication date
JPS5827974B2 (en) 1983-06-13

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