Urea

Urea

It is an organic compound produced by the reaction of ammonia and Carbon Dioxide at high pressure to produce an intermediate compound called Ammonium Carbamate which decomposes to produce Urea in liquid form. The concentration of Urea solution is gradually increased within the units by separating and recycling of non-metamorphic reactants and evaporating the water content to reach 96% - 98% where it is directed to the granulation unit to produce granulated Urea. Ammonia and carbon dioxide are supplied from the ammonia plant. More than 90% of global Urea production is directed to the fertilizer field as a source of nitrogen. Urea contains the highest nitrogen percentage among all solid fertilizers. Nitrogen percentage reaches 46.6%.


Specification for Granulated Urea


Minimum Weight 46.2%

Total nitrogen

Minimum Weight 0.3%

Humidity

Minimum Weight 1%

Biuret

Minimum Weight 0.35 - 0.55%

Formaldehyde

Minimum Weight 50 ppm

Free Ammonia

Minimum 3 kg for granule with a diameter of 3.15 mm

Resistance to fragmentation

Maximum 50 m 5

Temperature

760 to 800 kg / m3

Density

2-4 mm Minimum 90%

Allowed production class

Weight <1 mm Max 1% weight



Urea