JPS5527021A - Treatment of waste gas - Google Patents
Treatment of waste gasInfo
- Publication number
- JPS5527021A JPS5527021A JP9868078A JP9868078A JPS5527021A JP S5527021 A JPS5527021 A JP S5527021A JP 9868078 A JP9868078 A JP 9868078A JP 9868078 A JP9868078 A JP 9868078A JP S5527021 A JPS5527021 A JP S5527021A
- Authority
- JP
- Japan
- Prior art keywords
- waste gas
- sulfer
- nitrogen oxides
- ammonia
- 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
Abstract
PURPOSE: To remove nitrogen oxides stably at a relatively lower temperature while maintaining the activity of a catalyst by removing selectively sulfer trioxide from waste gas containing nitrogen oxides and sulfer oxides, and then catalytically reducing the waste gas with ammonia.
CONSTITUTION: Sulfer trioxide is selectively removed at a temperature of from 200 to 350°C from waste gas containing nitrogen oxides and sulfer oxides by using, as an absorbent, an alkali metal or alkaline earth metal oxide such as calcium oxide, etc. or iron oxide. Then, the resulting gas is reduced catalytically with ammonia at a temperature of from 200 to 350°C. When sulfer trioxide is previously removed, subsequently the catalytic reduction of the waste gas with ammonia can be carried out at a relatively lower temperature, and the activity of the catalyst and the removal rate of nitrogen oxides can be maintained stably.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9868078A JPS5527021A (en) | 1978-08-15 | 1978-08-15 | Treatment of waste gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9868078A JPS5527021A (en) | 1978-08-15 | 1978-08-15 | Treatment of waste gas |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5527021A true JPS5527021A (en) | 1980-02-26 |
JPS6147128B2 JPS6147128B2 (en) | 1986-10-17 |
Family
ID=14226218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9868078A Granted JPS5527021A (en) | 1978-08-15 | 1978-08-15 | Treatment of waste gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5527021A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60257821A (en) * | 1984-06-04 | 1985-12-19 | Babcock Hitachi Kk | Denitration and desulfurization of exhaust gas |
JP2010236877A (en) * | 2009-03-30 | 2010-10-21 | Chubu Electric Power Co Inc | Device and method for measurement of ammonia concentration in exhaust gas |
-
1978
- 1978-08-15 JP JP9868078A patent/JPS5527021A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60257821A (en) * | 1984-06-04 | 1985-12-19 | Babcock Hitachi Kk | Denitration and desulfurization of exhaust gas |
JP2010236877A (en) * | 2009-03-30 | 2010-10-21 | Chubu Electric Power Co Inc | Device and method for measurement of ammonia concentration in exhaust gas |
Also Published As
Publication number | Publication date |
---|---|
JPS6147128B2 (en) | 1986-10-17 |
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