JPS54110971A - Removal of nitrogen oxide contained in coke furnace exhaust gas - Google Patents
Removal of nitrogen oxide contained in coke furnace exhaust gasInfo
- Publication number
- JPS54110971A JPS54110971A JP1834278A JP1834278A JPS54110971A JP S54110971 A JPS54110971 A JP S54110971A JP 1834278 A JP1834278 A JP 1834278A JP 1834278 A JP1834278 A JP 1834278A JP S54110971 A JPS54110971 A JP S54110971A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- furnace exhaust
- coke furnace
- concentration
- rate
- 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
Abstract
PURPOSE: NH3 is introduced into coke furnace exhaust gas as a constant rate, independently of NO concentration variations with time. Or, more particularly, NH3 is mixed at a specified molar ratio to the average value of the maximum NO concentration, and the mixed gas is contacted with catalyst, thereby to reduce regeneration frequencies and to maintain high denitration rate.
CONSTITUTION: Into a coke furnace exhaust gas whose NO concentration varies with time in the range of 10 to 500 ppm, NH3 is added, regardless of NO variations, at a fixed rate such that the molar ratio of NH3/NO is 0.35 to 0.9, where NO is taken as the average value of the maximum NO concentration. The mixed gas is contacted with Ti-V base catalyst, etc., at 150 to 280°C. More specifically, when the molar ratio NH3/NO is 0.35 or more and below 0.8, NH3/NO=(η+(5±5))/123 should define the amount of NH3, and if the NH3/NO is 0.8 to 0.9, NH3/NO= (η-(77±5))/20 should define the NH3 quantity, wherein η is the desired dinitration rate.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1834278A JPS54110971A (en) | 1978-02-20 | 1978-02-20 | Removal of nitrogen oxide contained in coke furnace exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1834278A JPS54110971A (en) | 1978-02-20 | 1978-02-20 | Removal of nitrogen oxide contained in coke furnace exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54110971A true JPS54110971A (en) | 1979-08-30 |
| JPS5642973B2 JPS5642973B2 (en) | 1981-10-08 |
Family
ID=11968974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1834278A Granted JPS54110971A (en) | 1978-02-20 | 1978-02-20 | Removal of nitrogen oxide contained in coke furnace exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54110971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589146A (en) * | 1992-12-21 | 1996-12-31 | Mitsubishi Jukogyo Kaisha | Method for treating ammonia |
| US5785937A (en) * | 1994-08-10 | 1998-07-28 | Siemens Aktiengesellschaft | Method for the catalytic conversion of nitrogen oxides present in the exhaust gas of an internal-combustion engine |
-
1978
- 1978-02-20 JP JP1834278A patent/JPS54110971A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589146A (en) * | 1992-12-21 | 1996-12-31 | Mitsubishi Jukogyo Kaisha | Method for treating ammonia |
| US5785937A (en) * | 1994-08-10 | 1998-07-28 | Siemens Aktiengesellschaft | Method for the catalytic conversion of nitrogen oxides present in the exhaust gas of an internal-combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5642973B2 (en) | 1981-10-08 |
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