GB883946A - A process for effecting selective reduction reactions of gases containing oxides andfree oxygen - Google Patents
A process for effecting selective reduction reactions of gases containing oxides andfree oxygenInfo
- Publication number
- GB883946A GB883946A GB26359/60A GB2635960A GB883946A GB 883946 A GB883946 A GB 883946A GB 26359/60 A GB26359/60 A GB 26359/60A GB 2635960 A GB2635960 A GB 2635960A GB 883946 A GB883946 A GB 883946A
- Authority
- GB
- United Kingdom
- Prior art keywords
- selective reduction
- andfree
- oxygen
- gases containing
- containing oxides
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/20—Capture or disposal of greenhouse gases of methane
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Selective reduction of oxides of nitrogen in gases containing oxides of nitrogen and free O2 is effected by combustion of a mixture of the gas with NH3 in contact with a catalyst containing Pt, Pd, Rh, Ru, Ir, or Os, or mixtures thereof. Gases are waste gases from the production of HNO3 by oxidation of NH3 containing N2, O2 NO, and NO2 and may be mixed with the stoichiometric amount up to 10 times this amount of NH3. Temperatures are 150-400 DEG C. at atmospheric - 150 p.s.i.g. pressure and space velocities 3000-100,000 v/v/hr. The catalyst may be 0,01-2% metal on pellet, granule, or powder support of alumina, silica, or diatomaceous earth. Specification 849,842 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US883945XA | 1957-04-05 | 1957-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB883946A true GB883946A (en) | 1961-12-06 |
Family
ID=22211118
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26358/60A Expired GB883945A (en) | 1957-04-05 | 1958-03-26 | A process for the removal of free oxygen and the catalytic reduction of oxides of nitrogen in waste gases |
| GB26359/60A Expired GB883946A (en) | 1957-04-05 | 1958-03-26 | A process for effecting selective reduction reactions of gases containing oxides andfree oxygen |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26358/60A Expired GB883945A (en) | 1957-04-05 | 1958-03-26 | A process for the removal of free oxygen and the catalytic reduction of oxides of nitrogen in waste gases |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB883945A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1259298B (en) * | 1964-08-29 | 1968-01-25 | Hamburger Gaswerke Gmbh | Process for removing nitrogen oxides from gases by catalytic reduction thereof to nitrogen |
| US3806582A (en) * | 1969-09-16 | 1974-04-23 | Johnson Matthey Co Ltd | Catalytic reactions |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3405650A1 (en) * | 1983-07-12 | 1985-01-24 | Uhde Gmbh, 4600 Dortmund | METHOD FOR REDUCING NO (ARROW DOWN) X (ARROW DOWN) CONTENT IN EXHAUST GAS |
| DE102014223759A1 (en) | 2014-11-20 | 2016-05-25 | Wacker Chemie Ag | Removal of oxygen from hydrocarbon-containing gas mixtures |
| DE102015213030A1 (en) | 2015-07-13 | 2017-01-19 | Wacker Chemie Ag | Method for removing oxygen from a hydrocarbon and oxygen-containing gas mixture |
-
1958
- 1958-03-26 GB GB26358/60A patent/GB883945A/en not_active Expired
- 1958-03-26 GB GB26359/60A patent/GB883946A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1259298B (en) * | 1964-08-29 | 1968-01-25 | Hamburger Gaswerke Gmbh | Process for removing nitrogen oxides from gases by catalytic reduction thereof to nitrogen |
| US3806582A (en) * | 1969-09-16 | 1974-04-23 | Johnson Matthey Co Ltd | Catalytic reactions |
Also Published As
| Publication number | Publication date |
|---|---|
| GB883945A (en) | 1961-12-06 |
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