JPS54110969A - Removal of nitrogen oxide contained in coke furnace exhaust gas - Google Patents
Removal of nitrogen oxide contained in coke furnace exhaust gasInfo
- Publication number
- JPS54110969A JPS54110969A JP1825778A JP1825778A JPS54110969A JP S54110969 A JPS54110969 A JP S54110969A JP 1825778 A JP1825778 A JP 1825778A JP 1825778 A JP1825778 A JP 1825778A JP S54110969 A JPS54110969 A JP S54110969A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- gas
- coke furnace
- removal
- exhaust gas
- 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
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
PURPOSE: A selected amount of NH3 is introduced into coke furnace exhausted gas, and the mixed gas is contacted with catalyst, thereby to control the production of acidic ammonium sulfate and to effect a low cost, long life, high ratio NO removal.
CONSTITUTION: The temperature of coke furnace exhaust gas varies with time in the range of 150 to 280°C as caused by furnace change. Prior to introducing the exhausted gas into a catalytic layer, the gas NO content is measured by instruments such as a chemical luminescent type meter. Based on the NO content, NH3 is added in an amount such that the molar ratio of NH4/NO be 0.4 or more and less than 1. The mixed gas is, then, contacted with the catalyst at 150 to 280°C. The process produces no observable acid ammonium salts which will deteriorate the catalyst, thereby to prolong the service life of the catalyst, assuring high denitration rate for long period of time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1825778A JPS54110969A (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 |
---|---|---|---|
JP1825778A JPS54110969A (en) | 1978-02-20 | 1978-02-20 | Removal of nitrogen oxide contained in coke furnace exhaust gas |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54110969A true JPS54110969A (en) | 1979-08-30 |
Family
ID=11966620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1825778A Pending JPS54110969A (en) | 1978-02-20 | 1978-02-20 | Removal of nitrogen oxide contained in coke furnace exhaust gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54110969A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4447333A (en) * | 1979-09-25 | 1984-05-08 | Didier Engineering Gmbh. | Process for the elimination of ammonia in coke plant waste waters |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513366A (en) * | 1974-06-29 | 1976-01-12 | Asahi Chemical Ind | |
JPS5231970A (en) * | 1975-09-05 | 1977-03-10 | Kobe Steel Ltd | Removing method of nitrogen oxide from waste gas |
-
1978
- 1978-02-20 JP JP1825778A patent/JPS54110969A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513366A (en) * | 1974-06-29 | 1976-01-12 | Asahi Chemical Ind | |
JPS5231970A (en) * | 1975-09-05 | 1977-03-10 | Kobe Steel Ltd | Removing method of nitrogen oxide from waste gas |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4447333A (en) * | 1979-09-25 | 1984-05-08 | Didier Engineering Gmbh. | Process for the elimination of ammonia in coke plant waste waters |
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