JPS5771624A - Reduction of nox present in waste gas - Google Patents

Reduction of nox present in waste gas

Info

Publication number
JPS5771624A
JPS5771624A JP55148057A JP14805780A JPS5771624A JP S5771624 A JPS5771624 A JP S5771624A JP 55148057 A JP55148057 A JP 55148057A JP 14805780 A JP14805780 A JP 14805780A JP S5771624 A JPS5771624 A JP S5771624A
Authority
JP
Japan
Prior art keywords
waste gas
gas
mixed
line
reduction
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
JP55148057A
Other languages
Japanese (ja)
Inventor
Toru Seto
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 JP55148057A priority Critical patent/JPS5771624A/en
Publication of JPS5771624A publication Critical patent/JPS5771624A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Incineration Of Waste (AREA)
  • Treating Waste Gases (AREA)

Abstract

PURPOSE: To save the amount of catalyst used as well as raise the efficiency of dentrification by a method in which the concentration of oxygen in waste gas after being reduction and denitrification treatments in a furnace is regulated and then mixed with NH3, and then the gas is passed through the catalyst.
CONSTITUTION: Combustion waste gas of 1,000W1,600°C, containing O2 and NOx, generated in a furnace 1a is converted into a gas containing N2, HCN, and NH3 by a petroleum fuel supplied from a line 3. The gas is then mixed with a gas containing oxygen, e.g., air, etc., from a line 4 to convert it into waste gas containing N2 and a small amount of NOx. Then, the waste gas is mixed with air, etc., from a line 5 to make the concentration of O2 approx. 2%, and then mixed with NH3 supplied from a line 6. Then, the gas is passed through a denitrification catalyst layer 7 to decompose the remaining NOx into N2 and water.
COPYRIGHT: (C)1982,JPO&Japio
JP55148057A 1980-10-22 1980-10-22 Reduction of nox present in waste gas Pending JPS5771624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55148057A JPS5771624A (en) 1980-10-22 1980-10-22 Reduction of nox present in waste gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55148057A JPS5771624A (en) 1980-10-22 1980-10-22 Reduction of nox present in waste gas

Publications (1)

Publication Number Publication Date
JPS5771624A true JPS5771624A (en) 1982-05-04

Family

ID=15444200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55148057A Pending JPS5771624A (en) 1980-10-22 1980-10-22 Reduction of nox present in waste gas

Country Status (1)

Country Link
JP (1) JPS5771624A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50130677A (en) * 1974-04-02 1975-10-16
JPS5440277A (en) * 1977-09-06 1979-03-29 Mitsubishi Heavy Ind Ltd Reducing method for nitrogen oxides in exhaust gas

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50130677A (en) * 1974-04-02 1975-10-16
JPS5440277A (en) * 1977-09-06 1979-03-29 Mitsubishi Heavy Ind Ltd Reducing method for nitrogen oxides in exhaust gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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