JPS54136573A - Decreasing method for nitrogen oxides in exhaust gas - Google Patents
Decreasing method for nitrogen oxides in exhaust gasInfo
- Publication number
- JPS54136573A JPS54136573A JP4512378A JP4512378A JPS54136573A JP S54136573 A JPS54136573 A JP S54136573A JP 4512378 A JP4512378 A JP 4512378A JP 4512378 A JP4512378 A JP 4512378A JP S54136573 A JPS54136573 A JP S54136573A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- combustion
- fuel
- air
- nitrogen oxides
- 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
Links
Landscapes
- Incineration Of Waste (AREA)
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To improve the denitration rate and to decrease nitrogen oxides in exhaust gas, by carrying out treatment such as circulation of suitable quantity of combustion exhaust gas, addition of air and NH3 for the rear stream and petroleum fuel to high temperature part of exhaust gas after combustion.
CONSTITUTION: 5W10% of the petroleum fuel 6 against the main fuel 5 is thrown in the fuel 5 so as the fuel to be excess in combustion exhaust gas of the fire furnace 1a by the air for combustion 4 at the boiler 1 and NOx in exhaust gas is converted to N2 or HCN, HN3. The air 7 is thrown so as remaining O2 to be less than 0.5 vol.% and unburt gas is eliminated after adding minute quantity of the combustion exhaust gas 10 (containing 1W3 vol.% of O2, temperature; 900W 1200°C) and converting a large part of HCN, NH3 to N2 and a small quantity of NO. lastly, 0.5W3 times mol. of NH3 is added against remaining Nox at 900W 1100°C of temperature range and denitration rate is improved at 85W96% by the mutiple effect of so-called improvement of combustion process and high temperature denitration method in the furnace.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53045123A JPS5913245B2 (en) | 1978-04-17 | 1978-04-17 | Method for reducing nitrogen oxides in exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53045123A JPS5913245B2 (en) | 1978-04-17 | 1978-04-17 | Method for reducing nitrogen oxides in exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54136573A true JPS54136573A (en) | 1979-10-23 |
| JPS5913245B2 JPS5913245B2 (en) | 1984-03-28 |
Family
ID=12710482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53045123A Expired JPS5913245B2 (en) | 1978-04-17 | 1978-04-17 | Method for reducing nitrogen oxides in exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5913245B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011152444A1 (en) * | 2010-06-01 | 2011-12-08 | バブコック日立株式会社 | Combustion apparatus provided with spray nozzle |
-
1978
- 1978-04-17 JP JP53045123A patent/JPS5913245B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011152444A1 (en) * | 2010-06-01 | 2011-12-08 | バブコック日立株式会社 | Combustion apparatus provided with spray nozzle |
| JP2011252643A (en) * | 2010-06-01 | 2011-12-15 | Babcock Hitachi Kk | Combustion equipment with spray nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5913245B2 (en) | 1984-03-28 |
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