JPS57197024A - Purification of exhaust gas - Google Patents
Purification of exhaust gasInfo
- Publication number
- JPS57197024A JPS57197024A JP56082255A JP8225581A JPS57197024A JP S57197024 A JPS57197024 A JP S57197024A JP 56082255 A JP56082255 A JP 56082255A JP 8225581 A JP8225581 A JP 8225581A JP S57197024 A JPS57197024 A JP S57197024A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- exhaust gas
- flame spraying
- base alloy
- spraying method
- 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)
- Catalysts (AREA)
Abstract
PURPOSE: To reduce NO2 in an exhaust gas by using a catalyst having a catalytic coating of Fe-Cr or Fe-Cr-Ni base alloy formed on the surface of a catalyst carrier thereof by a flame spraying method to effectively reduce NO2 in the exhaust gas from a combustion instrument to NO.
CONSTITUTION: A porous carrier 2 such as a metal net or ceramic is subjected to surface area increasing treatment by blasting and, to the treated surface 3 of said carrier, an Fe-Cr base alloy or an Fe-Cr-Ni base alloy on a powdery or a wire like flame spraying material obtained by adding a minute amount of C, Co or Ti to said alloy according to necessity is deposited by flame spraying method to obtain a catalyst 1 having a porous catalytic coating formed thereon. This catalyst is used by arranging the same in the exhaust passage of the combustion chamber of a combustion instrument. By using the flame spraying method, the coating of the catalyst comes to a laminate of particles and the specific surface area thereof is increased as well as contact efficiency with the exhaust gas is enhanced and NO2→NO reducing efficiency is enhanced.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56082255A JPS57197024A (en) | 1981-05-28 | 1981-05-28 | Purification of exhaust gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56082255A JPS57197024A (en) | 1981-05-28 | 1981-05-28 | Purification of exhaust gas |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57197024A true JPS57197024A (en) | 1982-12-03 |
Family
ID=13769330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56082255A Pending JPS57197024A (en) | 1981-05-28 | 1981-05-28 | Purification of exhaust gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57197024A (en) |
-
1981
- 1981-05-28 JP JP56082255A patent/JPS57197024A/en active Pending
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