Ammonium Nitrate Technologies

Our Listings

Ammonium Nitrate Technologies

Construction and revamping concepts of ammonium nitrate plants

NIIK offers a full range of services from revamping of existing to construction of all-new Ammonium Nitrate (AN) and AN based fertilizer plants.

NIIK has its own unique technologies for production of Ammonium Nitrate and other AN based mineral fertilizers, possesses knowledge and experience in full cycle engineering from the concept and project documentation development to the installation, commissioning and start-up operations.

The AN process flow in the projects by NIIK includes the following stages:

  1. Preparation of AN solution via the nitric acid neutralization by ammonia in the weak acid medium and with subsequent 2nd stage neutralization and injection of conditioning additives.
  2. Evaporation of AN solution.
  3. Prilling of AN melt in the towers or granulation in the high speed drum granulators.
  4. Cooling of granulated AN in the fluidized bed coolers or drum vessels.
  5. Gas emission scrubbing.
  6. Treatment of granulated AN by anti-caking agents.
  7. Finished product shipment.

PROCESS FLOW DIAGRAM

For each production stage NIIK can propose an individual design of industrial equipment and automation means to guarantee an efficient and safe plant performance.

Press to zoom

1 – AN neutralizer; 2 – HNO3 heater; 3 – ammonia heater; 4 – 2ndstage neutralizer; 5 – evaporator; 6 – air heater; 7 – air blower; 8 – pump; 9 – melt drainage tank; 10 – 2ndstage neutralizer hydraulic seal; 11 – melt filter; 12 – melt tank; 13, 14 – pumps; 15 – tank of scrubbing liquid; 16 – head tank; 17 – priller; 18 – scrubber; 19, 20 – sectional scrubber; 21 – buffer tank; 23 – air heater and air-conditioner; 24 – prills cooler; 25 – conveyor; 26 – elevator; 27 – prills treatment by agent.

NIIK offers its design solutions with the use of high-efficient equipment for neutralization and AN melt evaporation stages, which can be applied for construction of new or revamps of existing AN plants.

 

Press to zoom

Section of AN solution production

NIIK offers:

Neutralization is performed under pressure close to the atmospheric one in the vessels where the heat of neutralization is used for AN solution evaporation. Capacity: up to 30 TPH

Specific features:

Advantages:

 

Press to zoom

Section of AN solution evaporation

NIIK offers:

Technical solution by NIIK provides the AN melt production in the vessels with falling-down film.

Specific features:

Advantages:

NIIK possesses knowledge and experience in the field of improvement of prilling and granulation stages at the mineral fertilizers plants. For production of high quality granulated fertilizers we propose design development and construction of prilling towers and high speed drum granulators.

 

Melt prilling section

NIIK offers:

AN melt prilling in the upward air stream when the prills free-fall inside the tower and then are forwarded for after-cooling in the fluidized bed coolers.

Advantages:

High Speed Drum Granulator:

Modernization of the existing plants for production of multicomponent AN based fertilizers (calcium ammonium nitrate etc.) remains a special activity area of NIIK.

As of today NIIK engineers established the main principals for improvement of AN plants in such a way as to produce the advanced nitrogen-zeolitic fertilizers which allow to increase efficiency of ammonium fertilizers by 15-20% (depending on the farm crop) while keeping the same nitrogen consumption.