JPS567636A - Treatment of exhaust gas containing nitrogen oxides - Google Patents
Treatment of exhaust gas containing nitrogen oxidesInfo
- Publication number
- JPS567636A JPS567636A JP8342279A JP8342279A JPS567636A JP S567636 A JPS567636 A JP S567636A JP 8342279 A JP8342279 A JP 8342279A JP 8342279 A JP8342279 A JP 8342279A JP S567636 A JPS567636 A JP S567636A
- Authority
- JP
- Japan
- Prior art keywords
- film layer
- nitrogen oxides
- protecting film
- carrier
- carried
- 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
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title abstract 12
- 239000007789 gas Substances 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 4
- 239000003054 catalyst Substances 0.000 abstract 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract 2
- 229910001887 tin oxide Inorganic materials 0.000 abstract 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract 2
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
PURPOSE: To reduce nitrogen oxides constantly for long time, by heating and contacting nitrogen oxides in the presence of ammonia with a catalyst which is made of a protecting film layer composed of one or more members among titanium oxide, zirconium oxide, and tin oxide to be carried on the surface of a carrier.
CONSTITUTION: Exhaust gas contg. nitrogen oxides is mixed with ammonia in the presence of a catalyst made by allowing a protecting film layer having 1W100μm thickness composed of one or more members among the group consisting of titanium oxide, zirconium oxide, and tin oxide to be carried on the surface of a carrier, and is heated at 150W650°C temp. The protecting film layer is preferably formed using porous raw material having 30W70% porosity, and about 90% of the particles, which constitute the protecting film layer, is preferably composed of ≤1μm particle diameter. To allow the protective film layer to be carried on the carrier, for example, above-described metallic oxides are dissolved in water to form a soln., then the soln. is sprayed on the base material of the catalyst, dried and calcined at 400W600°C temp.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54083422A JPS6018450B2 (en) | 1979-07-03 | 1979-07-03 | Method for treating exhaust gas containing nitrogen oxides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54083422A JPS6018450B2 (en) | 1979-07-03 | 1979-07-03 | Method for treating exhaust gas containing nitrogen oxides |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS567636A true JPS567636A (en) | 1981-01-26 |
| JPS6018450B2 JPS6018450B2 (en) | 1985-05-10 |
Family
ID=13801990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54083422A Expired JPS6018450B2 (en) | 1979-07-03 | 1979-07-03 | Method for treating exhaust gas containing nitrogen oxides |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6018450B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57174143A (en) * | 1981-04-18 | 1982-10-26 | Babcock Hitachi Kk | Catalyst for denitration |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62108750U (en) * | 1985-12-24 | 1987-07-11 |
-
1979
- 1979-07-03 JP JP54083422A patent/JPS6018450B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57174143A (en) * | 1981-04-18 | 1982-10-26 | Babcock Hitachi Kk | Catalyst for denitration |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6018450B2 (en) | 1985-05-10 |
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