ES346614A3 - Procedure and apparatus for the production of melamine from urea. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure and apparatus for the production of melamine from urea. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES346614A3 ES346614A3 ES346614A ES346614A ES346614A3 ES 346614 A3 ES346614 A3 ES 346614A3 ES 346614 A ES346614 A ES 346614A ES 346614 A ES346614 A ES 346614A ES 346614 A3 ES346614 A3 ES 346614A3
- Authority
- ES
- Spain
- Prior art keywords
- urea
- zone
- melamine
- melt
- heated
- 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
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title abstract 6
- 239000004202 carbamide Substances 0.000 title abstract 6
- 229920000877 Melamine resin Polymers 0.000 title abstract 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000006227 byproduct Substances 0.000 abstract 2
- 239000000155 melt Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 1
- 239000012943 hotmelt Substances 0.000 abstract 1
Landscapes
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Process for the production of melamine from urea, characterized in that molten urea is continuously fed into the bottom of an elongated reaction zone in a vertical direction and heated to a temperature of at least 350ºC by means of heating devices placed in the same; the incoming urea is directed in such a way that it forms an intimate contact with a hot melt comprising melamine, unreacted urea and reaction byproducts that are already in the heated zone, so that the urea is pyrolyzed and gases are produced which, with the help of a thermal elevation, cause the melt to circulate upwards through the heated zone; more heat is added to the melt practically throughout its passage through this zone; part of the melamine and gaseous by-products thus formed are removed from the upper part of the reaction zone and the remainder is recycled towards the lower part of the reaction zone, with the help of a downward heat flow in a relatively more area cold separated from the heating device, from which it passes again to the heating zone, the circulating melt being maintained at a pressure of at least 70 kgs/cm2. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES346614A ES346614A3 (en) | 1967-10-31 | 1967-10-31 | Procedure and apparatus for the production of melamine from urea. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES346614A ES346614A3 (en) | 1967-10-31 | 1967-10-31 | Procedure and apparatus for the production of melamine from urea. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES346614A3 true ES346614A3 (en) | 1968-12-16 |
Family
ID=8446687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES346614A Expired ES346614A3 (en) | 1967-10-31 | 1967-10-31 | Procedure and apparatus for the production of melamine from urea. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES346614A3 (en) |
-
1967
- 1967-10-31 ES ES346614A patent/ES346614A3/en not_active Expired
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