Urea Melting
Urea is used in several applications like
- Nitrogen fertiliser
- Base chemical in resin, paint and glue production
- Up-stream product of hydrazine, melamine and amidosulfonic acid
- Cosmetics
- Animal feed and
- Ice melting
Some applications of urea need the addition of other ingredients in order to provide a more useful product. Therefore the urea granules from the urea production process need to be melted and mixed with other materials.
E. g. nitrogen fertilizeer: Temperatures of about 130°C support Biuret creation by the combination of two urea molecules and the formation of one ammonia molecule. The Biuret concentration of the final product should be low because Biuret impairs plant growth. Therefore the residence time under elevated temperature must be as short as possible.
Melting and mixing tasks are very effectively realised in a horizontal thin film dryer.
