JPS56163742A - Control device for amount of ammonia addition in denitration of coke oven waste gas - Google Patents
Control device for amount of ammonia addition in denitration of coke oven waste gasInfo
- Publication number
- JPS56163742A JPS56163742A JP2516581A JP2516581A JPS56163742A JP S56163742 A JPS56163742 A JP S56163742A JP 2516581 A JP2516581 A JP 2516581A JP 2516581 A JP2516581 A JP 2516581A JP S56163742 A JPS56163742 A JP S56163742A
- Authority
- JP
- Japan
- Prior art keywords
- ammonia
- waste gas
- amount
- denitration
- coke oven
- 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
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To remove NOx efficiently and economically and reduce unreacted ammonia by controlling the amount of ammonia addition according to the fluctuations in the NOx concn. in waste gas in a catalytic reduction denitration method for coke over waste gas.
CONSTITUTION: In the catalytic reduction denitration of coke oven waste gas, the total amount of NOxs in the waste gas entering the catalyst bed of a reaction tower 1 is determined from flow rate and an analyzer 12, and the amount of ammonia corresponding to this is calculated with a rate setter 14. A control valve 24 is moved by the deviation between this signal and the actual flow rate of ammonia. Whereas, coke oven undergoes alteration periodically, and causes a sharp decrease particulrly in the NOx concn. and therefore at such a time, a timer 26 operates to cut off between a controller 23 and the valve 24, thereby stopping the supply of ammonia. In this way, denitration is accomplished efficiently, and even more, the oversupply of ammonia is eliminated and secondary pollution is prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2516581A JPS56163742A (en) | 1981-02-23 | 1981-02-23 | Control device for amount of ammonia addition in denitration of coke oven waste gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2516581A JPS56163742A (en) | 1981-02-23 | 1981-02-23 | Control device for amount of ammonia addition in denitration of coke oven waste gas |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3196877A Division JPS53116269A (en) | 1977-03-23 | 1977-03-23 | Method of denitrating coke furnace exhaust gases |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56163742A true JPS56163742A (en) | 1981-12-16 |
JPS637086B2 JPS637086B2 (en) | 1988-02-15 |
Family
ID=12158392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2516581A Granted JPS56163742A (en) | 1981-02-23 | 1981-02-23 | Control device for amount of ammonia addition in denitration of coke oven waste gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56163742A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473537A (en) * | 1982-12-27 | 1984-09-25 | General Electric Company | Ammonia control system for NOx emission control for gas turbine exhaust |
US4473536A (en) * | 1982-12-27 | 1984-09-25 | General Electric Company | Catalytic pollution control system for gas turbine exhaust |
JPS60216829A (en) * | 1984-04-13 | 1985-10-30 | Mitsubishi Heavy Ind Ltd | Denitration apparatus |
-
1981
- 1981-02-23 JP JP2516581A patent/JPS56163742A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473537A (en) * | 1982-12-27 | 1984-09-25 | General Electric Company | Ammonia control system for NOx emission control for gas turbine exhaust |
US4473536A (en) * | 1982-12-27 | 1984-09-25 | General Electric Company | Catalytic pollution control system for gas turbine exhaust |
JPS60216829A (en) * | 1984-04-13 | 1985-10-30 | Mitsubishi Heavy Ind Ltd | Denitration apparatus |
JPH0533088B2 (en) * | 1984-04-13 | 1993-05-18 | Mitsubishi Heavy Ind Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS637086B2 (en) | 1988-02-15 |
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