JPS5440277A - Reducing method for nitrogen oxides in exhaust gas - Google Patents
Reducing method for nitrogen oxides in exhaust gasInfo
- Publication number
- JPS5440277A JPS5440277A JP10631977A JP10631977A JPS5440277A JP S5440277 A JPS5440277 A JP S5440277A JP 10631977 A JP10631977 A JP 10631977A JP 10631977 A JP10631977 A JP 10631977A JP S5440277 A JPS5440277 A JP S5440277A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- petroleum fuel
- furnace
- contained
- air
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Treating Waste Gases (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
PURPOSE: To reduce efficiently NOx contained in combustion exhaust gas, by addn. of petroleum fuel, which is diluted with combustion exhaust gas to a specific concn. or below, to the combustion exhaust gas.
CONSTITUTION: To the exhaust gas 6 flowing through a ventilator 7, which is usually used in boiler system for recirculating exhaust gas, is added petroleum fuel (e.g., propane) in a ratio of 0.1kg (petroleum fuel)/Nm3 (diluting combustion exhaust gas), and the mixed gas is fed 8 to a furnace 1a. Addn. of the petroleum fuel converts NO contained in the exhaust gas into NH3, HCN, N2. To remove unburnt component e.g., CO contained in large amount in the gas, air diluted with the exhaust gas is introduced 4 into the furnace 1 pref. at 850W950°C. After conversion of most of the NOx contained in the exhaust gas to N2, the exhaust gas is released to the air through an air-preheater 9 and a chimney 10 without causing environmental pollution. The reaction temp. in the furnace 1a is 1,200W1,600°C.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10631977A JPS5440277A (en) | 1977-09-06 | 1977-09-06 | Reducing method for nitrogen oxides in exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10631977A JPS5440277A (en) | 1977-09-06 | 1977-09-06 | Reducing method for nitrogen oxides in exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5440277A true JPS5440277A (en) | 1979-03-29 |
Family
ID=14430624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10631977A Pending JPS5440277A (en) | 1977-09-06 | 1977-09-06 | Reducing method for nitrogen oxides in exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5440277A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5771624A (en) * | 1980-10-22 | 1982-05-04 | Mitsubishi Heavy Ind Ltd | Reduction of nox present in waste gas |
| US7168947B2 (en) * | 2004-07-06 | 2007-01-30 | General Electric Company | Methods and systems for operating combustion systems |
-
1977
- 1977-09-06 JP JP10631977A patent/JPS5440277A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5771624A (en) * | 1980-10-22 | 1982-05-04 | Mitsubishi Heavy Ind Ltd | Reduction of nox present in waste gas |
| US7168947B2 (en) * | 2004-07-06 | 2007-01-30 | General Electric Company | Methods and systems for operating combustion systems |
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