Mist Eliminators for the Nitrogen Industry

The nitrogen industry has numerous processes where AMISTCO Candle Filters and Knitted Mesh Mist Eliminators provide separation solutions. They prevent corrosion, protect downstream equipment, prevent pollution and recover valuable product.

Nitrogen Processes

Ammonia Nitrate-Ammonia Nitrate and nitric acid are fed to the neutralizer. The highly exothermic reaction produces NH4NO3 and steam. The neutralizer can be under pressure, vacuum or atmospheric. Ammonia Nitrate solution is fed to an evaporator and concentrated solution is prilled.

Urea Fertilizer- There are once through, partial recycle and total recycle processes. In brief, liquid NH3 is mixed with CO2 gas under high pressure with recycled recarbamate. Conversion to urea is 60%. Pressure is reduced with each pass through the first and second decomposers to drive off all of the NH3 and CO2. The urea solution is further concentrated in a vacuum evaporator and pumped through spray heads in the prilling tower.

Nitric Acid- NH3 is oxidized with air on PR/RM catalyst to form NO at high temperature. N2 and unreacted O2 are fed to atmosphere with NO and NO2.

Nitrogen Candle Filter Applications

• Evaporator towers (prevent product loss)
• Prilling Towers (pollution prevention)
• Catalyst (minimize loss of precious metals)
• Post Absorbing Tower (product recovery and protection of downstream equipment)
• Neutralizer and evaporator (prevent water and air pollution)