Editorial Technical Reference

Modular Urea Granulation and Prilling System

This page explains how Modular Urea Granulation and Prilling System is classified within Fertilizers and Nitrogen Compounds Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Integrated industrial system for producing solid urea fertilizers through granulation or prilling processes.

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Product Specifications

Technical details and manufacturing context for Modular Urea Granulation and Prilling System

Definition
The Modular Urea Granulation and Prilling System is a complete production line designed for the final stage of urea fertilizer manufacturing. It converts liquid urea melt into uniform solid granules or prills through controlled cooling and solidification. This system is essential for B2B fertilizer manufacturers supplying agricultural markets with nitrogen-rich fertilizers in stable, transportable forms. The system integrates key components such as a granulator or prilling tower, cooling air handling, and auxiliary equipment, all mounted on a modular framework for flexible configuration. It is available in a range of production capacities from 10 to 50 tons per day, with final particle sizes typically between 1.0 and 4.0 mm. The urea melt is fed at temperatures of 130–145°C, and the system uses cooling air flow rates of 50,000 to 150,000 m³/h in the prilling tower. Total power consumption ranges from 500 to 1500 kW, and the system operates within an ambient temperature range of 0–60°C. The equipment is constructed from corrosion-resistant materials such as Stainless Steel 316L, Carbon Steel, High-Temperature Alloys, and Ceramic Linings, with material grades per ASTM A240 (e.g., SS304/316L). The system is designed for a working pressure of 1.0–1.6 MPa and electrical supply of 380–690 V AC, three-phase, 50/60 Hz (IEC 60038). The footprint area ranges from 500 to 2000 m², and system weight is between 50 and 200 tons. Noise levels are ≤85 dB(A) at 1 m (ISO 3744), and electrical enclosures meet IP54–IP65 (IEC 60529). Moisture content in the final product is ≤0.3%. All values are reference ranges and must be verified with the manufacturer for specific models.
Working Principle
Liquid urea melt is fed into the system at 130–145°C. In the granulation route, the melt is sprayed onto a bed of recycled fines in a rotating drum, where it layers and solidifies into granules. In the prilling route, the melt is atomized into droplets through high-pressure nozzles at the top of a prilling tower; the droplets fall against a counter-current stream of cooling air (50,000–150,000 m³/h) and solidify into prills. The solid particles are then cooled, screened, and conveyed to storage. The system maintains controlled cooling and solidification to achieve uniform particle size distribution (1.0–4.0 mm) and low moisture content (≤0.3%).
Common Materials
Stainless Steel 316L, Carbon Steel, High-Temperature Alloys, Ceramic Linings
Technical Parameters
ParameterTypical rangeNotes & selection driver
Production CapacityRequired10–50 tons/dayMaximum urea output rate
Particle Size RangeRequired1.0–4.0 mmDiameter of final urea granules/prills
Urea Melt TemperatureRequired130–145 °CInput temperature of liquid urea
Cooling Air Flow RateRequired50000–150000 m³/hVolume of cooling air in prilling tower
System Power Consumption500–1500 kWTotal electrical power requirement
Moisture Content≤0.3 %Maximum moisture in final product
Operating Temperature0–60 °CAmbient temperature range for system operation
Electrical Supply380–690 V ACThree-phase, 50/60 HzIEC 60038
Material GradeSS304/316LCorrosion-resistant for urea serviceASTM A240
System Weight50–200 tDepends on configuration and capacity
Footprint Area500–2000 m²Including granulator, prilling tower, and auxiliaries
Noise Level≤85 dB(A)At 1 m distance from equipmentISO 3744
IP RatingIP54–IP65For electrical enclosures and motorsIEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Modular Urea Granulation and Prilling System.

Urea Solidification System Fertilizer Granulation Line Prilling Tower System Urea Pelletizing Plant

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 0.5 bar gauge
flow rate: 5-100 tons/hour urea melt
temperature: 140-180°C (prilling), 120-160°C (granulation)
slurry concentration: 95-99.8% urea content
Media Compatibility
✓ Urea melt (ammonia/CO2 synthesis) ✓ Urea-ammonium nitrate solutions ✓ Formaldehyde-modified urea compounds
Unsuitable: Chloride-containing environments (risk of corrosion and product contamination)
Sizing Data Required
  • Required production capacity (tons/day)
  • Available footprint and height constraints
  • Cooling water temperature and availability

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion and stress cracking
Cause: Exposure to urea melt and ammonia vapors at elevated temperatures, combined with thermal cycling and residual stresses from fabrication, leading to chloride-induced stress corrosion cracking (SCC) in stainless steel components.
Granulator/prilling tower nozzle clogging and wear
Cause: Solidification and buildup of urea deposits due to improper temperature control, impurities in the feed, or inadequate purging, coupled with abrasive wear from high-velocity particle impact.
Maintenance Indicators
  • Visible ammonia vapor leaks or white crystalline deposits around welds, flanges, or valves, indicating corrosion or cracking.
  • Abnormal granule size distribution, irregular particle shape, or reduced production output, signaling nozzle blockages or wear in the granulation/prilling system.
Engineering Tips
  • Implement strict water chemistry control and use corrosion-resistant alloys (e.g., duplex stainless steels) for critical components, along with regular non-destructive testing (NDT) like ultrasonic or dye penetrant inspection for early crack detection.
  • Maintain precise temperature and humidity control in the prilling tower, conduct routine nozzle cleaning and alignment checks, and install inline filters to minimize feed impurities that cause clogging and abrasive wear.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASME B31.3 — Process Piping CE Marking — EU Machinery Directive 2006/42/EC

Quoted from the published standard.

Manufacturing Precision
  • Particle Size Range: 1.0 to 4.0 mm
  • Moisture Content: <= 0.3%
Quality Inspection
  • Particle size analysis by sieve test on granulated product
  • Moisture content determination on finished prills

Manufacturers of Modular Urea Granulation and Prilling System

Manufacturer profiles associated with Modular Urea Granulation and Prilling System.

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Frequently Asked Questions

What is the typical production capacity of this system?

The reference range is 10 to 50 tons per day, but the exact capacity depends on the specific configuration and process conditions. Verify with the manufacturer for your application.

What particle sizes can be achieved?

The system is designed to produce granules or prills with a diameter range of 1.0 to 4.0 mm. Final particle size distribution depends on process settings and must be confirmed for your product requirements.

What materials are used in construction?

Typical materials include Stainless Steel 316L, Carbon Steel, High-Temperature Alloys, and Ceramic Linings. Material grades such as SS304/316L per ASTM A240 are referenced, but confirm with the supplier for specific components.

What standards apply to this system?

Referenced standards include IEC 60038 for electrical supply, ISO 3744 for noise measurement, and IEC 60529 for IP ratings. These are verification references; compliance must be confirmed with the manufacturer.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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