Product Line

Product Line Department – Include in Manufacturing

Production of Ammonium Nitrate Prill (Annual) > 280 KT Anopril™. Process of Making Ammonium Nitrate (Nitric Acid Plant). With the UHDE Dual Pressure process factory with high efficiency Nitric Acid Plant, designed to produce 700 MTPD 100% Nitric Acid with 60% concentration.

proccess

Conversion of NH3 + Air

By burning Ammonia assisted by Pt/Rh gauze to form NO (Nitric Oxide) gas.

Oxidation reaction required with a decrease in pressure and an increase in temperature.

Reaction that occurs

4NH3 +5O2 = 4NO + 6H2O

Cooling

The gas process is cooled to below the condensation point and at which the oxidation process proceeds according to the following equation

2NO + O2 = 2NO2

At the same time all the heat is absorbed to be reused for generation of electricity that will be used to help the run production process

Absorption

Conversion of NH3 + Air
	Nitrogen oxides (NO and NO2) are absorbed in water that is shipped to various trays inside the absorber column. This process produces heat, and will absorbed by cooling water (chiller). At this stage, 60% NHO3 is formed.

Bleaching

Bleaching
	The HNO3 produced from absorbers still has dissolved nitrogen oxides. By venting air (O2) to release it into the bleaching tower and producing clarity in the HNO3 product.
Ammonium Nitrate

Neutralization

Using NH3 gas and 60% HNO3, the neutralization process occurs and forms AN solution with the reaction

NH3 (g) + HNO3 (aq) > NH4NO3

From the mixing of the above 92% AN Solution is formed.

Evaporation

Before the prilling process, ammonium nitrate solution needs a concentration of 96%. This is done with a Falling Film Evaporator and using Steam.

Prilling/solidification

Prilling/solidification
	Prilling is the process of forming solids from AN Solution. Solution is sprayed through the nozzle at the top of the 60-meter-high tower. The prill that is formed is LDAN (low Density Ammonium Nitrate), which is used as an explosive material.

Drying

For stability, ease of handling, and transportation needs, solid AN needs drying using a Dryer train.

Until the moisture is only 0.1% when the product comes out of the Dryer.

Coating

The addition of a coating additive at the end of the process prevents caking of AN products, such that the product can hold its shape.