JPS57162637A - Decomposing method for nox - Google Patents
Decomposing method for noxInfo
- Publication number
- JPS57162637A JPS57162637A JP56048231A JP4823181A JPS57162637A JP S57162637 A JPS57162637 A JP S57162637A JP 56048231 A JP56048231 A JP 56048231A JP 4823181 A JP4823181 A JP 4823181A JP S57162637 A JPS57162637 A JP S57162637A
- Authority
- JP
- Japan
- Prior art keywords
- nox
- compd
- phosphate
- sox
- tio
- 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
Abstract
PURPOSE: To reduce and decompose NOX efficiently while suppressing the oxidation of SOX by treating waste gases contg. NOX and SOX with NH3 in the presence of the catalysts prepd. by firing the moldings consisting of specific compsns. of TiO2, a V compd., and phosphate of alkaline earth metals, zinc, etc.
CONSTITUTION: A raw material of TiO2 (e.g.; titanium hydroxide), a V compd. (e.g.; V2O5) and phosphate of metals of ≥1 kinds of alkaline earth metals, zinc, Al, etc. are mixed. The mixing ratios are 100pts.wt. the TiO2, 0.1W3pts.wt. the V compd. (value in terms of V2O5), and 0.1W5pts.wt. the phosphate (value in terms of tertiary salt) and are 0.1W2.5pts.wt. the phosphate with respect to 1pt.wt. of the V compd. Next, water and molding assistants such as silica sol, glass powder, or the like are added according to need to this mixture, thence the mixture is molded and dried, after which the moldings are fired at 300W 700°C, whereby the catalysts are prepd. Next, waste gases contg. NOX and SOX and the NH3 of 0.6W2 times mole the NOX are flowed through this catalyst bed under 200W600°C temp. conditions, whereby the NOX is reduced and decomposed.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56048231A JPS57162637A (en) | 1981-03-31 | 1981-03-31 | Decomposing method for nox |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56048231A JPS57162637A (en) | 1981-03-31 | 1981-03-31 | Decomposing method for nox |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57162637A true JPS57162637A (en) | 1982-10-06 |
Family
ID=12797659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56048231A Pending JPS57162637A (en) | 1981-03-31 | 1981-03-31 | Decomposing method for nox |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57162637A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4774219A (en) * | 1986-08-11 | 1988-09-27 | Shell Oil Company | Bimetallic catalyst and process for its preparation |
US4812296A (en) * | 1985-09-06 | 1989-03-14 | Siemens Aktiengesellschaft | Process utilizing catalytic material for the reduction of nitrous oxides |
JP2005342711A (en) * | 2004-05-07 | 2005-12-15 | Mitsubishi Chemical Engineering Corp | Denitration method of diesel engine exhaust gas |
-
1981
- 1981-03-31 JP JP56048231A patent/JPS57162637A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4812296A (en) * | 1985-09-06 | 1989-03-14 | Siemens Aktiengesellschaft | Process utilizing catalytic material for the reduction of nitrous oxides |
US4774219A (en) * | 1986-08-11 | 1988-09-27 | Shell Oil Company | Bimetallic catalyst and process for its preparation |
JP2005342711A (en) * | 2004-05-07 | 2005-12-15 | Mitsubishi Chemical Engineering Corp | Denitration method of diesel engine exhaust gas |
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