JPS5575730A - Controlling method for denitrification ammonia gas in flue gas denitrification apparatus - Google Patents
Controlling method for denitrification ammonia gas in flue gas denitrification apparatusInfo
- Publication number
- JPS5575730A JPS5575730A JP14792078A JP14792078A JPS5575730A JP S5575730 A JPS5575730 A JP S5575730A JP 14792078 A JP14792078 A JP 14792078A JP 14792078 A JP14792078 A JP 14792078A JP S5575730 A JPS5575730 A JP S5575730A
- Authority
- JP
- Japan
- Prior art keywords
- amount
- denitrification
- change
- value
- flue
- 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 eliminate the variation in NOx values due to excess and deficiency of NH3 or the change of load by controlling the amount of denitrification NH3 by the NOx value at the inlet of flue, or by injecting preferentially denitrification NH3 according to the change in the NOx value at the outlet of fuel economizer.
CONSTITUTION: Signal from the NOx detector at the inlet of flue is put in the proportional integrator 23 as a feed back, the output signal of the integrator 23 is put in the multiplier 12 through the adder 24 and the switcher 26, and total NOx amount is corrected by the final NOx signal to obtain the command value of the denitrification NH3 amount. The differentiator 25 detects a change in the NOx amount. The differentiator 25 detects a change in the NOx value at the inlet of flue and then varies the command value of NH3 amount preferentially. And, the differentiator 27 detects a change in the NOx value at the outlet of fue economizer and adds its signal to the proportional integrator 14 in order to control NH3 amount preferentially. The function generator 29 regulates the opening degree of the NH3 regulating valve for total NOx amount.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14792078A JPS5575730A (en) | 1978-12-01 | 1978-12-01 | Controlling method for denitrification ammonia gas in flue gas denitrification apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14792078A JPS5575730A (en) | 1978-12-01 | 1978-12-01 | Controlling method for denitrification ammonia gas in flue gas denitrification apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5575730A true JPS5575730A (en) | 1980-06-07 |
JPS6119290B2 JPS6119290B2 (en) | 1986-05-16 |
Family
ID=15441076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14792078A Granted JPS5575730A (en) | 1978-12-01 | 1978-12-01 | Controlling method for denitrification ammonia gas in flue gas denitrification apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5575730A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58143825A (en) * | 1982-02-22 | 1983-08-26 | Babcock Hitachi Kk | Apparatus for controlling pouring amount of ammonia |
JPS60216829A (en) * | 1984-04-13 | 1985-10-30 | Mitsubishi Heavy Ind Ltd | Denitration apparatus |
CN113274878A (en) * | 2021-04-07 | 2021-08-20 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Thermal power plant denitration outlet nitrogen oxide standard exceeding phenomenon control method |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62137846U (en) * | 1986-02-25 | 1987-08-31 | ||
JPS6354555U (en) * | 1986-09-30 | 1988-04-12 | ||
JPH01190557A (en) * | 1988-01-26 | 1989-07-31 | Kinugawa Rubber Ind Co Ltd | Ornamental molding for automobile |
JP3911729B2 (en) * | 1996-08-23 | 2007-05-09 | 石川島播磨重工業株式会社 | Denitration ammonia injection amount control method and apparatus for coal fired boiler |
-
1978
- 1978-12-01 JP JP14792078A patent/JPS5575730A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58143825A (en) * | 1982-02-22 | 1983-08-26 | Babcock Hitachi Kk | Apparatus for controlling pouring amount of ammonia |
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 | |
CN113274878A (en) * | 2021-04-07 | 2021-08-20 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Thermal power plant denitration outlet nitrogen oxide standard exceeding phenomenon control method |
Also Published As
Publication number | Publication date |
---|---|
JPS6119290B2 (en) | 1986-05-16 |
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