JPS57171424A - Removal of nitrogen oxides in gas - Google Patents
Removal of nitrogen oxides in gasInfo
- Publication number
- JPS57171424A JPS57171424A JP56056639A JP5663981A JPS57171424A JP S57171424 A JPS57171424 A JP S57171424A JP 56056639 A JP56056639 A JP 56056639A JP 5663981 A JP5663981 A JP 5663981A JP S57171424 A JPS57171424 A JP S57171424A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- nox
- aqueous solution
- exhaust gas
- sodium chlorite
- 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 miniaturize a water washing and absorbing apparatus by a method wherein the SO2 component of an exhaust gas containing NO is adjusted to a specific range and conversion to NO2 is accelerated by an alkaline aqueous solution of sodium chlorite and oxidative adsorption of NO is promoted by coexistence of NO and SO2.
CONSTITUTION: A 0.5W10% sodium chlorite aqueous solution is used when NOx in a combustion gas after boiler heating reaches a predetermined value or more by the change of an operating condition but, generally, a part of the gas to be treated is taken to control an SO2 gas content to 10W30ppm and the controlled exhaust gas issued from an SOx desulfurizing tower is washed by the 0.5W10% sodium chlorite aqueous solution. For example, when the controlled exhaust gas contg. 190ppm NOx is washed by an 4% sodium sulfite aqueous solution in a recirculation water system, said gas is discharged in such a condition that NOx therein from the tower top is reduced to about 20ppm. If SO2 coexists in the controlled exhaust gas, a NOx absorbing rate is accelerated.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56056639A JPS57171424A (en) | 1981-04-14 | 1981-04-14 | Removal of nitrogen oxides in gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56056639A JPS57171424A (en) | 1981-04-14 | 1981-04-14 | Removal of nitrogen oxides in gas |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57171424A true JPS57171424A (en) | 1982-10-22 |
JPS6361048B2 JPS6361048B2 (en) | 1988-11-28 |
Family
ID=13032897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56056639A Granted JPS57171424A (en) | 1981-04-14 | 1981-04-14 | Removal of nitrogen oxides in gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57171424A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020050991A (en) * | 2000-12-22 | 2002-06-28 | 신현준 | Method for wet scrubbing of nitrogen oxides from flue gas |
JP2005528207A (en) * | 2002-06-05 | 2005-09-22 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Oxidation of NOX with chlorine dioxide combined with a thermal NOX removal method |
-
1981
- 1981-04-14 JP JP56056639A patent/JPS57171424A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020050991A (en) * | 2000-12-22 | 2002-06-28 | 신현준 | Method for wet scrubbing of nitrogen oxides from flue gas |
JP2005528207A (en) * | 2002-06-05 | 2005-09-22 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Oxidation of NOX with chlorine dioxide combined with a thermal NOX removal method |
JP2005528209A (en) * | 2002-06-05 | 2005-09-22 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Method for reducing NOx in waste gas streams using chlorine dioxide |
JP2005528208A (en) * | 2002-06-05 | 2005-09-22 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | NOx oxidation with sodium chlorite combined with a hot NOx removal process |
JP2005528210A (en) * | 2002-06-05 | 2005-09-22 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Method for reducing NOx in a waste gas stream using sodium chlorite |
JP4649206B2 (en) * | 2002-06-05 | 2011-03-09 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Method for reducing NOx in a waste gas stream using sodium chlorite |
Also Published As
Publication number | Publication date |
---|---|
JPS6361048B2 (en) | 1988-11-28 |
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