GB750234A - Improvements in and relating to the production of nitrogen-containing atmospheres - Google Patents
Improvements in and relating to the production of nitrogen-containing atmospheresInfo
- Publication number
- GB750234A GB750234A GB836553A GB836553A GB750234A GB 750234 A GB750234 A GB 750234A GB 836553 A GB836553 A GB 836553A GB 836553 A GB836553 A GB 836553A GB 750234 A GB750234 A GB 750234A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- catalyst bed
- catalyst
- chamber
- introducing
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
- C21D1/763—Adjusting the composition of the atmosphere using a catalyst
-
- 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
- C01B21/02—Preparation of nitrogen
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
- H04N3/185—Maintaining DC voltage constant
- H04N3/1853—Maintaining DC voltage constant using regulation in parallel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/27—Picture reproducers using cathode ray tubes with variable depth of penetration of electron beam into the luminescent layer, e.g. penetrons
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Organic Chemistry (AREA)
- Multimedia (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
Nitrogen is produced by introducing ammonia and primary air in a molecular ratio of not less than 4:3 into the top of a preheated nickel catalyst bed in a chamber 1 via inlets 11 and 12, introducing secondary air into the bottom of the bed via inlet 13, and allowing the product gas to pass via a grid 4 and an annular space between the chamber 1 and an outer open top chamber 2 to an exit pipe 14 so as to effect heat exchange with the upper portion of the catalyst bed. The catalyst may be in massive form, e.g. as grannules, sponge, or pellets, or may be supported on a carrier such as pummice, silica, alpha alumina, or Kieselguhr. A wire gauze dome 17 prevents catalyst passing into pipe 13. The temperature at the bottom of the catalyst bed may be controlled by introducing cooled product gas via a pipe 18. A gas burner for initially heating the catalyst bed may be introduced through a pipe 15.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB836553A GB750234A (en) | 1953-03-26 | 1953-03-26 | Improvements in and relating to the production of nitrogen-containing atmospheres |
| LU32750A LU32750A1 (en) | 1953-03-26 | 1954-03-09 | |
| BE527574A BE527574A (en) | 1953-03-26 | 1954-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB836553A GB750234A (en) | 1953-03-26 | 1953-03-26 | Improvements in and relating to the production of nitrogen-containing atmospheres |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB750234A true GB750234A (en) | 1956-06-13 |
Family
ID=47633889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB836553A Expired GB750234A (en) | 1953-03-26 | 1953-03-26 | Improvements in and relating to the production of nitrogen-containing atmospheres |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE527574A (en) |
| GB (1) | GB750234A (en) |
| LU (1) | LU32750A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1115230B (en) * | 1958-06-05 | 1961-10-19 | Engelhard Ind Inc | Process for the selective removal of oxides of nitrogen from gas mixtures which contain oxygen, nitrogen monoxide and nitrogen dioxide and the remainder consists of inert gases |
| WO2025027031A1 (en) | 2023-07-31 | 2025-02-06 | Duiker Combustion Engineers B.V. | A process and apparatus for producing hydrogen by thermal reforming of ammonia |
-
1953
- 1953-03-26 GB GB836553A patent/GB750234A/en not_active Expired
-
1954
- 1954-03-09 LU LU32750A patent/LU32750A1/xx unknown
- 1954-03-24 BE BE527574A patent/BE527574A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1115230B (en) * | 1958-06-05 | 1961-10-19 | Engelhard Ind Inc | Process for the selective removal of oxides of nitrogen from gas mixtures which contain oxygen, nitrogen monoxide and nitrogen dioxide and the remainder consists of inert gases |
| WO2025027031A1 (en) | 2023-07-31 | 2025-02-06 | Duiker Combustion Engineers B.V. | A process and apparatus for producing hydrogen by thermal reforming of ammonia |
| BE1031850A1 (en) | 2023-07-31 | 2025-02-24 | Duiker Combustion Eng B V | A PROCESS FOR THE PRODUCTION OF HYDROGEN BY THERMAL REFORMING OF AMMONIA |
Also Published As
| Publication number | Publication date |
|---|---|
| LU32750A1 (en) | 1954-05-10 |
| BE527574A (en) | 1954-09-24 |
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