JPS5452670A - Removing method for nox in exhaust gas - Google Patents
Removing method for nox in exhaust gasInfo
- Publication number
- JPS5452670A JPS5452670A JP11859377A JP11859377A JPS5452670A JP S5452670 A JPS5452670 A JP S5452670A JP 11859377 A JP11859377 A JP 11859377A JP 11859377 A JP11859377 A JP 11859377A JP S5452670 A JPS5452670 A JP S5452670A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- exhaust gas
- ore
- case
- activity
- 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
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
PURPOSE: To increase the capacity of the catalyst at the initial stage, to decrease the rate of the activity lowering due to the formation of sulfuric acid and, in this way, to remove effectively NOx at low temperature, by mixing NH3 to the exhaust gas and using Mn2O3 as the catalyst.
CONSTITUTION: The material obtained by converting MnCO3, MnO2, etc. in the Mn ore to Mn2O3 by roasting the Mn ore in the atmosphere of air, is used as the catalyst and NOx in the exhaust gas is removed by being reduced to N2 at low temperature, for example, at 150W200°C, by adding NH3 to the exhaust gas and passing the mixed gas on the catalyst. At this case, when the content of SO2 in the exhaust gas becomes larger, in the case where the Mn ore is used as the catalyst, the activity lowering due to the formation of sulfuric acid occurs in a very short period of time and the catalyst must be regenerated frequently, but in the case of the Mn2O3 catalyst, the activity is maintained for a considerably long period of time
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11859377A JPS5452670A (en) | 1977-10-04 | 1977-10-04 | Removing method for nox in exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11859377A JPS5452670A (en) | 1977-10-04 | 1977-10-04 | Removing method for nox in exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5452670A true JPS5452670A (en) | 1979-04-25 |
Family
ID=14740413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11859377A Pending JPS5452670A (en) | 1977-10-04 | 1977-10-04 | Removing method for nox in exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5452670A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998052681A1 (en) * | 1997-05-17 | 1998-11-26 | Korea Power Engineering Company, Inc. | Method for removing nitrogen oxides using natural manganese ores |
| KR100348142B1 (en) * | 2000-05-24 | 2002-08-09 | 주식회사 매그린 | A Method for Removing Stink by Ammonia And/Or Amine Using A Manganese Ore |
| KR20030023344A (en) * | 2001-09-13 | 2003-03-19 | 주식회사 매그린 | Method for Removing Ozone Using Natural Manganese Ore as a Catalyst |
| KR100473080B1 (en) * | 2000-12-22 | 2005-03-08 | 한국전력기술 주식회사 | Method for Improving NOx Removal Efficiency from Flue Gas and Reducing Consumption of Ammonia and Emission of Nitrogen Dioxide Using Modified Natural Manganese Ores |
-
1977
- 1977-10-04 JP JP11859377A patent/JPS5452670A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998052681A1 (en) * | 1997-05-17 | 1998-11-26 | Korea Power Engineering Company, Inc. | Method for removing nitrogen oxides using natural manganese ores |
| KR100348142B1 (en) * | 2000-05-24 | 2002-08-09 | 주식회사 매그린 | A Method for Removing Stink by Ammonia And/Or Amine Using A Manganese Ore |
| KR100473080B1 (en) * | 2000-12-22 | 2005-03-08 | 한국전력기술 주식회사 | Method for Improving NOx Removal Efficiency from Flue Gas and Reducing Consumption of Ammonia and Emission of Nitrogen Dioxide Using Modified Natural Manganese Ores |
| KR20030023344A (en) * | 2001-09-13 | 2003-03-19 | 주식회사 매그린 | Method for Removing Ozone Using Natural Manganese Ore as a Catalyst |
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