ES385100A1 - Oxidation of ammonia - Google Patents
Oxidation of ammoniaInfo
- Publication number
- ES385100A1 ES385100A1 ES385100A ES385100A ES385100A1 ES 385100 A1 ES385100 A1 ES 385100A1 ES 385100 A ES385100 A ES 385100A ES 385100 A ES385100 A ES 385100A ES 385100 A1 ES385100 A1 ES 385100A1
- Authority
- ES
- Spain
- Prior art keywords
- fine wire
- ammonia
- oxidation
- catalyst
- plug
- 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
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title abstract 10
- 229910021529 ammonia Inorganic materials 0.000 title abstract 5
- 230000003647 oxidation Effects 0.000 title abstract 4
- 238000007254 oxidation reaction Methods 0.000 title abstract 4
- 239000003054 catalyst Substances 0.000 abstract 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 239000010970 precious metal Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/24—Nitric oxide (NO)
- C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Filtering Materials (AREA)
- Knitting Of Fabric (AREA)
Abstract
A procedure for ammonia oxidation to produce nitrogen oxides in which a mixture of ammonia and an oxidation gas is contacted at elevated temperature and pressure with a plug of catalyst containing from about 10 to 50 layers of fine wire cloth of a platinum group metal, wherein a method of reducing the amount of platinum fine wire is provided which comprises determining the optimal amount of fine wire required to obtain at least about 95% conversion of ammonia to oxides of nitrogen, determine the pressure drop across said fine wire mesh plug of catalyst under the reaction conditions, replace approximately 1/3 to 2/3 of said fine wire mesh with a porous structure of a resistant non-precious metal to corrosion, said structure having a porosity such that the total pressure drop through the catalyst package, containing ne the remaining fine wire mesh and porous structure, is substantially equal to that of the optimal catalyst plug, and carry out the oxidation of ammonia. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US225570A | 1970-01-12 | 1970-01-12 | |
| US7156070A | 1970-09-11 | 1970-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES385100A1 true ES385100A1 (en) | 1973-03-16 |
Family
ID=26670137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES385100A Expired ES385100A1 (en) | 1970-01-12 | 1970-10-31 | Oxidation of ammonia |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS4929436B1 (en) |
| BE (1) | BE761389A (en) |
| DE (1) | DE2101188C2 (en) |
| ES (1) | ES385100A1 (en) |
| FR (1) | FR2074921A5 (en) |
| GB (1) | GB1347491A (en) |
| NL (1) | NL174243C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2064975B (en) * | 1979-10-18 | 1984-03-14 | Johnson Matthey Co Ltd | Fibrous catalytic materials |
| IE50367B1 (en) * | 1979-11-08 | 1986-04-02 | Johnson Matthey Co Ltd | Improvements in and relating to catalyst units |
| FR2694306B1 (en) * | 1992-07-31 | 1994-10-21 | Louyot Comptoir Lyon Alemand | Wires comprising a helical element, their assemblies and the use of said assemblies as catalyst and / or for recovering precious metals. |
| AU2004234120B2 (en) | 2003-04-29 | 2009-01-08 | Johnson Matthey Plc | Improved catalyst charge design |
| DE102018003340A1 (en) * | 2018-04-24 | 2019-10-24 | Linde Aktiengesellschaft | Prevention of corrosion damage to isothermal reactors |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1318336A (en) * | 1919-10-07 | Making oxids of bismuth | ||
| AT105358B (en) * | 1924-12-08 | 1927-01-25 | Ivar Walfrid Dr Cederberg | Device for the catalytic combustion of ammonia. |
| BE369335A (en) * | 1929-08-26 | |||
| DE838285C (en) * | 1950-02-09 | 1954-03-08 | Degussa | Process for the recovery of platinum using platinum catalysts, particularly in the oxidation of ammonia |
-
1970
- 1970-10-31 ES ES385100A patent/ES385100A1/en not_active Expired
- 1970-11-12 JP JP45099771A patent/JPS4929436B1/ja active Pending
- 1970-11-13 FR FR7040680A patent/FR2074921A5/fr not_active Expired
-
1971
- 1971-01-08 BE BE761389A patent/BE761389A/en not_active IP Right Cessation
- 1971-01-11 GB GB132371A patent/GB1347491A/en not_active Expired
- 1971-01-12 NL NLAANVRAGE7100386,A patent/NL174243C/en not_active IP Right Cessation
- 1971-01-12 DE DE2101188A patent/DE2101188C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL174243B (en) | 1983-12-16 |
| DE2101188A1 (en) | 1971-07-22 |
| FR2074921A5 (en) | 1971-10-08 |
| BE761389A (en) | 1971-07-08 |
| NL7100386A (en) | 1971-07-14 |
| DE2101188C2 (en) | 1984-10-25 |
| JPS4929436B1 (en) | 1974-08-03 |
| GB1347491A (en) | 1974-02-27 |
| NL174243C (en) | 1984-05-16 |
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