JPS558880A - Treatment of waste gas - Google Patents
Treatment of waste gasInfo
- Publication number
- JPS558880A JPS558880A JP125979A JP125979A JPS558880A JP S558880 A JPS558880 A JP S558880A JP 125979 A JP125979 A JP 125979A JP 125979 A JP125979 A JP 125979A JP S558880 A JPS558880 A JP S558880A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- waste gas
- gas
- regenerated
- decomposed
- 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
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
PURPOSE: To permit the removal of NOx by a dry type denitrification method involving a low temperature reaction by the procedure in which NH3 is added to NOx- containing waste gas and then the waste gas is passed through a catalyst layer in order to decompose part of NOx and also to collect the other part in the form of salts on the catalyst layer which is, in turn, regenerated by reductive gas.
CONSTITUTION: A NOx-containing waste gas 1 is adjusted its temperature to room temperature to 150°C, then mixed with NH3 gas, and then passed through the catalyst layers 7 and 8 where part of NOx are decomposed into N2 and the other part is collected on the catalyst in the form of NH4NO3 and NH4NO2. The deactivated catalyst due to the adhesion of the NH4 salts in increasing amounts is then regenerated by passing a 250 to 450°C N2 gas containing a reducing agent, e.g., methanol, NH3, etc., through the catalyst and at the same time the nitrogenous compounds are decomposed into N2. As catalyst, activated carbon or alumina on which the oxides of Fe, V, Mn, Cu, Ni, etc., are supported is used. In the case of fixed bed method, using a plural number of the reactors 5 and 6, an alternate operation of the NOx removal process and the catalyst regeneration process is advisable.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP125979A JPS558880A (en) | 1979-01-12 | 1979-01-12 | Treatment of waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP125979A JPS558880A (en) | 1979-01-12 | 1979-01-12 | Treatment of waste gas |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50064059A Division JPS51140870A (en) | 1975-05-30 | 1975-05-30 | An exhaust gas treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS558880A true JPS558880A (en) | 1980-01-22 |
Family
ID=11496455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP125979A Pending JPS558880A (en) | 1979-01-12 | 1979-01-12 | Treatment of waste gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS558880A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996022828A1 (en) * | 1995-01-25 | 1996-08-01 | Gaz Metropolitain And Company, Limited Partnership | Selective catalytic reduction of nitrogen oxides |
| WO1998002234A1 (en) * | 1996-07-11 | 1998-01-22 | Mitsubishi Heavy Industries, Ltd. | Exhaust gas denitration method |
| CN106669673A (en) * | 2015-11-11 | 2017-05-17 | 中国石油化工股份有限公司 | Method for preparing CO (Carbon Monoxide) reduction denitration catalyst |
| CN113522299A (en) * | 2021-05-25 | 2021-10-22 | 宁夏亘峰嘉能能源科技股份有限公司 | Desulfurization, denitrification and mercury removal catalyst and preparation method thereof |
-
1979
- 1979-01-12 JP JP125979A patent/JPS558880A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996022828A1 (en) * | 1995-01-25 | 1996-08-01 | Gaz Metropolitain And Company, Limited Partnership | Selective catalytic reduction of nitrogen oxides |
| US6383463B1 (en) | 1996-07-10 | 2002-05-07 | Mitsubishi Heavy Industries, Ltd. | Exhaust gas denitration method |
| WO1998002234A1 (en) * | 1996-07-11 | 1998-01-22 | Mitsubishi Heavy Industries, Ltd. | Exhaust gas denitration method |
| CN106669673A (en) * | 2015-11-11 | 2017-05-17 | 中国石油化工股份有限公司 | Method for preparing CO (Carbon Monoxide) reduction denitration catalyst |
| CN106669673B (en) * | 2015-11-11 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of preparation method of CO reduction denitrating catalyst |
| CN113522299A (en) * | 2021-05-25 | 2021-10-22 | 宁夏亘峰嘉能能源科技股份有限公司 | Desulfurization, denitrification and mercury removal catalyst and preparation method thereof |
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