Among all the known elements in nature, Nitrogen (N), phosphorus (P) and potassium (K) has more effects on growth of plants rather than the others, so some combinations of these are used as a fertilizer for agriculture. Urea (NH2CONH2) is most famous nitrogen fertilizer which can be used for most of plants and so has these advantages: not changing in the concentration of salts in soil and not leaving behind salts in the soil.
The 70% of produced urea in the world is used in agriculture and the rest is used in production of melamine powder as animal food and medical applications.
The urea plant of KHPC is under the Stamicarbon license and produces 495000 tons of prill urea with using 310000 tons of ammonia and 200 million normal cubic meters of carbon dioxide that started to work in June of 1996. Urea is produced from a reaction between ammonia and carbon dioxide in 143 kg/cm2 and 170-180 oC based on these reactions:
NH2COONH4 NH2CONH2+ H20
The first reaction is exothermic and fast and ammonia and carbon dioxide convert to the liquid ammonium carbamate (NH2COONH4) and the second reaction is endothermic and slow, the ammonium carbamate decomposes to urea (NH2CONH2) and water. Nowadays the target markets for this production are: Afghanistan, Sri Lanka, Vietnam, India, Colombo and Malaysia.
The main uses of this product are in the production of chemical fertilizers and urea resins of formaldehyde.
|Urea(Prill) specification :|
|NO||PROPERTY||UNITS||TEST METHOD||SPEC Value|
|1||N2 content||Wt%||BS DIN EN 15478||Min 46|
|2||Biuret content||Wt%||BS DIN EN 15479||Max 1.0|
|3||Moisture||Wt%||ISO 760||Max 0.3|
|4||Particle size(1-2.4mm)||%||ISO 8397||Min 90|
|5||Urea Formaldhide(UF)||%||H.F.T 1.6 & SBB 0071-02-E||Max 0.4|
|6||Formaldhide in Industrial Urea||PPM||H.F.T 1.6 & SBB 0071-02-E||Max 100|
Anticake in Industrial Urea
|PRODUCTS PACKAGE DETAILS(Packing: 50 kg bags/ Balk urea)|
|2||Outer layer||PP(Poly Propylene) woven bag|
|3||Inner layer||PE(Poly Ethylene)|