PROCESS FOR PREPARING MELAMINE
The invention relates to a method for the production of melamine by reaction of urea in the presence of a solid catalyst in one or more serial reactors in the temperature range 370 °C to 430 °C, cooling and filtering the gases produced in the urea reaction, separation of the melamine by desublimatio...
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| Format: | Patent |
| Sprache: | eng ; fre |
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| Zusammenfassung: | The invention relates to a method for the production of melamine by reaction of urea in the presence of a solid catalyst in one or more serial reactors in the temperature range 370 °C to 430 °C, cooling and filtering the gases produced in the urea reaction, separation of the melamine by desublimation and recycling a part of the gases produced after separation of the melamine ('recycle gas') into the reactor or reactors, characterised in that all given steps are carried out at a pressure in the range 4 bar to 10 bar. |
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