JPS55162331A - Wet type harm removing method for exhaust gas containing nitrogen oxide - Google Patents
Wet type harm removing method for exhaust gas containing nitrogen oxideInfo
- Publication number
- JPS55162331A JPS55162331A JP6883779A JP6883779A JPS55162331A JP S55162331 A JPS55162331 A JP S55162331A JP 6883779 A JP6883779 A JP 6883779A JP 6883779 A JP6883779 A JP 6883779A JP S55162331 A JPS55162331 A JP S55162331A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- conduit
- mixed
- exhaust gas
- washed
- 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
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To remove noxious substance and prevent the discharging of substance capable of generatning secondary environmental pollution outside the system by a method wherein cooled exhaust gas containing NOx is oxidized by means of an oxidation catalyst layer into which activated carbon is mixed, and the activated carbon after the oxidation is washed by a sulfite water solution.
CONSTITUTION: Air is mixed into a gas current containing NOx, the gas is cooled at a temperature lower than 45°C, the cooled gas is passed through a catalyst layer into which the activated carbon of not more than 30% moisture content is mixed, and the NOx is adsorbed as NO2. The activated carbon is washed by a sulfite water solution of not less than 15% concentration, the NO2 is reduced to N2, and the activated carbon is regenerated. For example, desulfurized exhaust gas 1 is mixed with air from a conduit 3, sent in from an oxidation tower 4, and oxidized to the NO2 on an activated carbon layer 8. The activated carbon layer 8 adsorbing the NO2 is washed by a reductant water solution from a conduit 9, and a waste liquid of washing is forwarded to a vessel 11 from a conduit 10. The washings are recirculated by means of a pump 5 and the conduit 9.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6883779A JPS55162331A (en) | 1979-06-04 | 1979-06-04 | Wet type harm removing method for exhaust gas containing nitrogen oxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6883779A JPS55162331A (en) | 1979-06-04 | 1979-06-04 | Wet type harm removing method for exhaust gas containing nitrogen oxide |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55162331A true JPS55162331A (en) | 1980-12-17 |
Family
ID=13385200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6883779A Pending JPS55162331A (en) | 1979-06-04 | 1979-06-04 | Wet type harm removing method for exhaust gas containing nitrogen oxide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55162331A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004290903A (en) * | 2003-03-28 | 2004-10-21 | Nishimatsu Constr Co Ltd | Apparatus and method for removing nitrogen oxide |
JP2005230769A (en) * | 2004-02-23 | 2005-09-02 | Nishimatsu Constr Co Ltd | Removal method for nitrogen oxide and removal device for nitrogen oxide |
WO2005084784A1 (en) * | 2004-03-09 | 2005-09-15 | Nishimatsu Construction Co., Ltd. | Apparatus for removing nitrogen oxides and method for removing nitrogen oxides |
KR100623925B1 (en) * | 2005-05-04 | 2006-09-19 | 한국열병합발전기주식회사 | Digester gas cleaning system for cogneration |
JP2007021499A (en) * | 2006-10-23 | 2007-02-01 | Nishimatsu Constr Co Ltd | Removal method of nitrogen oxide and removal apparatus of nitrogen oxide |
-
1979
- 1979-06-04 JP JP6883779A patent/JPS55162331A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004290903A (en) * | 2003-03-28 | 2004-10-21 | Nishimatsu Constr Co Ltd | Apparatus and method for removing nitrogen oxide |
JP4614629B2 (en) * | 2003-03-28 | 2011-01-19 | 西松建設株式会社 | Nitrogen oxide removal equipment |
JP2005230769A (en) * | 2004-02-23 | 2005-09-02 | Nishimatsu Constr Co Ltd | Removal method for nitrogen oxide and removal device for nitrogen oxide |
JP4565857B2 (en) * | 2004-02-23 | 2010-10-20 | 西松建設株式会社 | Nitrogen oxide removing method and nitrogen oxide removing apparatus |
WO2005084784A1 (en) * | 2004-03-09 | 2005-09-15 | Nishimatsu Construction Co., Ltd. | Apparatus for removing nitrogen oxides and method for removing nitrogen oxides |
KR100843924B1 (en) * | 2004-03-09 | 2008-07-03 | 니시마쯔 켄세쯔 가부시키가이샤 | Apparatus for removing nitrogen oxides and method for removing nitrogen oxides |
CN100415349C (en) * | 2004-03-09 | 2008-09-03 | 西松建设株式会社 | Apparatus for removing nitrogen oxides and method for removing nitrogen oxides |
US7722704B2 (en) | 2004-03-09 | 2010-05-25 | Nishimatsu Construction Co., Ltd. | Equipment and method for removing nitrogen oxide |
KR100623925B1 (en) * | 2005-05-04 | 2006-09-19 | 한국열병합발전기주식회사 | Digester gas cleaning system for cogneration |
JP2007021499A (en) * | 2006-10-23 | 2007-02-01 | Nishimatsu Constr Co Ltd | Removal method of nitrogen oxide and removal apparatus of nitrogen oxide |
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