Industry-Verified Manufacturing Data (2026)

Integrated Nitric Acid Production and Concentration System

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Integrated Nitric Acid Production and Concentration System used in the Fertilizers and Nitrogen Compounds Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Integrated Nitric Acid Production and Concentration System is characterized by the integration of Ammonia Oxidation Reactor and Waste Heat Boiler. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel 304L/316L construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Complete industrial system for producing and concentrating nitric acid from ammonia oxidation

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Product Specifications

Technical details and manufacturing context for Integrated Nitric Acid Production and Concentration System

Definition
This integrated system encompasses the entire industrial process for manufacturing concentrated nitric acid, starting from ammonia oxidation through to final concentration. It coordinates multiple unit operations including catalytic ammonia oxidation, nitrogen oxide absorption, and acid concentration via distillation or extractive methods. The system is designed for continuous operation in large-scale fertilizer and chemical plants, ensuring efficient conversion of ammonia to high-purity nitric acid while managing heat integration and emissions control. It represents a complete production solution rather than individual components.
Working Principle
Ammonia is catalytically oxidized to nitrogen oxides, which are absorbed in water to form weak nitric acid, then concentrated through distillation or extractive processes using sulfuric acid or magnesium nitrate.
Common Materials
Stainless Steel 304L/316L, Hastelloy C-276, Ceramic Packing Materials, Platinum-Rhodium Catalyst Gauzes
Technical Parameters
  • Nitric acid concentration in final product (% w/w) Per Request
  • Nominal nitric acid production rate (metric tons/day) Per Request
Components / BOM
  • Ammonia Oxidation Reactor
    Catalytically converts ammonia to nitrogen oxides using platinum-rhodium gauzes
    Material: Hastelloy C-276 with ceramic insulation
  • Waste Heat Boiler
    Recovers heat from oxidation reaction to generate steam
    Material: Carbon steel with stainless steel tubes
  • Absorption Column System
    Absorbs nitrogen oxides in water to form weak nitric acid using multiple packed columns
    Material: Stainless Steel 304L with ceramic packing
  • Concentration Column
    Concentrates weak nitric acid to commercial strength via distillation
    Material: Stainless Steel 316L with structured packing
  • Tail Gas Heater Optional
    Preheats tail gas before catalytic reduction of residual NOx
    Material: Stainless Steel 304
  • Process Control System
    Integrated DCS/PLC system for monitoring and controlling all process parameters
    Material: Industrial-grade electronics in NEMA 4X enclosures
Engineering Reasoning
0.8-1.2 MPa (8-12 bar) for oxidation reactor, 0.1-0.3 MPa (1-3 bar) for absorption column
Platinum-rhodium catalyst deactivation at 950°C, stainless steel 304L stress corrosion cracking at 60°C with >68% HNO3 concentration
Design Rationale: Catalyst sintering above 950°C reduces surface area from 5 m²/g to <0.5 m²/g; chloride-induced stress corrosion cracking at grain boundaries in austenitic microstructure
Risk Mitigation (FMEA)
Trigger Ammonia-to-air ratio deviation beyond 9.5-11.5% vol
Mode: Thermal runaway in oxidation reactor exceeding 950°C
Strategy: Triple-redundant mass flow controllers with 0.5% accuracy and automated shutdown at 920°C
Trigger Cooling water temperature rise above 35°C in absorption column
Mode: Nitrogen oxide absorption efficiency drop below 98%
Strategy: Plate heat exchanger with titanium plates and 20% oversizing for 45°C design temperature

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Integrated Nitric Acid Production and Concentration System.

Nitric Acid Manufacturing Plant Ammonia Oxidation and Acid Concentration System HNO3 Production System Concentrated Nitric Acid Production Line ammonia oxidation nitric acid production system integrated nitric acid concentration plant industrial nitric acid absorption column system low NOx emission nitric acid manufacturing energy-efficient nitric acid production equipment

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0.5-10 bar (typical operating range)
flow rate: 100-5000 Nm³/h ammonia feed (scalable)
temperature: 400-950°C (oxidation), 20-200°C (absorption/concentration)
slurry concentration: Not applicable (gas-phase process)
nitric acid concentration: 50-68 wt% (standard), up to 98 wt% (concentrated)
Media Compatibility
✓ Stainless steel 304L/316L (cold sections) ✓ Aluminum (absorption towers) ✓ PTFE/graphite (gaskets/seals)
Unsuitable: Chloride-containing environments (risk of stress corrosion cracking)
Sizing Data Required
  • Ammonia feed rate (kg/h or Nm³/h)
  • Required nitric acid concentration (wt%)
  • Desired production capacity (tons HNO₃/day)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Stress corrosion cracking
Cause: Exposure to nitric acid at elevated temperatures and pressures, combined with tensile stresses from thermal cycling or mechanical loading, leading to intergranular cracking in stainless steel components like heat exchangers and piping.
Catalyst degradation
Cause: Poisoning of platinum-rhodium gauze catalysts in the ammonia oxidation reactor due to impurities in feed gases (e.g., sulfur compounds, chlorides) or thermal sintering from overheating, reducing nitric oxide conversion efficiency.
Maintenance Indicators
  • Visible yellow-brown nitrogen dioxide (NO2) gas leaks or vapor clouds around flanges, valves, or welds, indicating nitric acid or nitrous gas release.
  • Abnormal audible high-frequency vibration or whistling in absorption towers or tail gas expanders, suggesting flow-induced vibration, impeller damage, or cavitation in pumps.
Engineering Tips
  • Implement strict water chemistry control in cooling systems (e.g., maintain low chloride and sulfate levels) and use corrosion-resistant alloys (e.g., high-silicon stainless steels, titanium) for critical wetted parts to combat acid attack and stress corrosion.
  • Install real-time vibration monitoring and thermal imaging on rotating equipment (compressors, pumps) and reactors to detect early imbalance, bearing wear, or hot spots, enabling predictive maintenance before catastrophic failures.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ASME B31.3 - Process piping DIN EN 13445 - Unfired pressure vessels
Manufacturing Precision
  • Pipe wall thickness: +/-10% of nominal thickness
  • Pressure vessel circularity: 1% of nominal diameter
Quality Inspection
  • Ultrasonic thickness testing for corrosion monitoring
  • Hydrostatic pressure test at 1.5x design pressure

Factories Producing Integrated Nitric Acid Production and Concentration System

Verified manufacturers with capability to produce this product in China

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✓ 93% Supplier Capability Match Found

P Project Engineer from Germany Jan 01, 2026
★★★★★
"Found 19+ suppliers for Integrated Nitric Acid Production and Concentration System on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
S Sourcing Manager from Brazil Dec 29, 2025
★★★★★
"The technical documentation for this Integrated Nitric Acid Production and Concentration System is very thorough, especially regarding Ammonia Feed Rate (kg/hr)."
Technical Specifications Verified
P Procurement Specialist from Canada Dec 26, 2025
★★★★★
"Reliable performance in harsh Fertilizers and Nitrogen Compounds Manufacturing environments. No issues with the Integrated Nitric Acid Production and Concentration System so far."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

7 sourcing managers are analyzing this specification now. Last inquiry for Integrated Nitric Acid Production and Concentration System from Thailand (20m ago).

Frequently Asked Questions

What materials are used in the construction of this nitric acid system?

The system utilizes corrosion-resistant materials including Stainless Steel 304L/316L for general components, Hastelloy C-276 for high-temperature sections, ceramic packing materials for absorption columns, and platinum-rhodium catalyst gauzes for the oxidation reactor.

What are the key specifications for emission control in this system?

The system is designed to maintain NOx emission levels below specified limits (measured in mg/Nm³) through optimized absorption column operation, efficient oxidation reactor temperature control, and integrated tail gas treatment components.

How does the concentration column improve nitric acid production efficiency?

The concentration column achieves high efficiency percentages by utilizing waste heat recovery from the oxidation reactor, optimized pressure and temperature profiles, and advanced process control to produce concentrated nitric acid with minimal energy consumption per ton.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Fertilizers and Nitrogen Compounds Manufacturing sector.

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