GB1036303A - Inhibited ammoniacal refrigerating agent - Google Patents
Inhibited ammoniacal refrigerating agentInfo
- Publication number
- GB1036303A GB1036303A GB956263A GB956263A GB1036303A GB 1036303 A GB1036303 A GB 1036303A GB 956263 A GB956263 A GB 956263A GB 956263 A GB956263 A GB 956263A GB 1036303 A GB1036303 A GB 1036303A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitrite
- ammonia
- amine
- salt
- chromate
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/06—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly alkaline liquids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/047—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for absorption-type refrigeration systems
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
An ammoniacal refrigerating agent contains an inhibiting mixture consisting of (1) an aliphatic amine containing 12 to 20 C atoms in a straight chain, (2) a salt of the amine as emulsifier, (3) dicyclohexyl-amine or a salt of and (4) at least one of an inorganic nitrite, nitrate, or chromate. The inhibitor forms a film on the metal surface which retards the corrosive action of ammonia on aluminium structures both in the liquid or gaseous state. In examples, a solution containing octadecylamine or dodecyl amine and its acetate together with dicyclohexylamine nitrite, sodium nitrite and sodium chromate is saturated with gaseous ammonia and hydrogen, until the ammonia content is 30%.ALSO:Aluminium refrigeration machines, in which ammoniacal coolants are used, are protected against corrosion by adding an inhibiting mixture consisting of (1) an aliphatic amine containing 12 to 20 C atoms in a straight chain, (2) a salt of the amine as emulsifier, (3) dicyclohexylamine or a salt of, and (4) at least one of an inorganic nitrate, nitrite, or chromate. The inhibitor forms a film on the metal surface which retards the corrosive action of ammonia both in the liquid and gaseous phase. In examples, a solution containing octadecylamine or dodecylamine and its acetate, together with dicyclohexylamine nitrite, sodium nitrite, and sodium chromate, is saturated with gaseous ammonia and hydrogen, giving an ammonia content of 30%.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU29562 | 1962-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1036303A true GB1036303A (en) | 1966-07-20 |
Family
ID=10948957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB956263A Expired GB1036303A (en) | 1962-03-09 | 1963-03-11 | Inhibited ammoniacal refrigerating agent |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1036303A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2674518A1 (en) * | 1991-03-26 | 1992-10-02 | Centre Nat Rech Scient | FLUID ELECTROLYTES BASED ON LITHIUM SALT AMMONIACATES. |
| CN108949111A (en) * | 2018-09-14 | 2018-12-07 | 兰州理工大学 | A kind of porous polymer matrix phase-changing energy storage material and preparation method and application |
-
1963
- 1963-03-11 GB GB956263A patent/GB1036303A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2674518A1 (en) * | 1991-03-26 | 1992-10-02 | Centre Nat Rech Scient | FLUID ELECTROLYTES BASED ON LITHIUM SALT AMMONIACATES. |
| WO1992017911A1 (en) * | 1991-03-26 | 1992-10-15 | Centre National De La Recherche Scientifique (Cnrs) | Fluid electrolytes based on lithium salt ammines |
| CN108949111A (en) * | 2018-09-14 | 2018-12-07 | 兰州理工大学 | A kind of porous polymer matrix phase-changing energy storage material and preparation method and application |
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