Urea (CO(NH₂)₂) is a chemical compound which is most often produced in an integrated ‘Natural gas – Ammonia – Urea’ process and is used in a wide range of applications.
There are different grades of urea available
- Fertilizer urea
- 3 quality parameters
- Agricultural application
- Feed urea
- 5 quality parameters
- Ruminant feed
- Technical urea
- 8 quality parameters
- Plastics, glues, textile industry, industrial usage etc.
- Automotive urea
- 17 quality parameters
- Prilled without surface treatment.
For industrial usage, technical urea or automotive urea are most often used.
Urea is produced from liquid ammonia and gaseous carbon dioxide at high pressure and temperature. Several chemical reactions occur and the resulting process provides an aqueous urea solution. That urea solution can be adjusted to the required concentration for subsequent use, or converted to solid urea through water evaporation with the subsequent processes of crystallisation, melting, prilling or granulation.
Storage and quality of Urea
Storage of urea
Packed product must be stored in original, undamaged and closed containers separately from foodstuffs, drinks, animal feed, pesticides and their containers. Bulk product must be stored in separate and marked boxes, in dry, ventilated and closed storerooms.
Urea can be used to blend NOx reduction fluids. The fluids are used in SCR or SNCR NOx emissions control technology. For a proper working NOx reduction system it is important to uphold the quality of the products. It is therefore important to follow the storage recommendations is therefore important.