Industrial-Grade Phosphoric Acid Plant
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Keywords:
ENGINEERING CASE
Phosphorus Chemical
Phosphoric Acid Plant
Product details
Core Production Process
The typical industrial process for phosphoric acid production is the wet process, which involves the reaction of phosphate rock with sulfuric acid:
Ca3(PO4)2+3H2SO4→2H3PO4+3CaSO4⋅2H2O
Step 1: Raw Material Preparation
Phosphate rock is crushed, screened, and stored in raw material silos.
Particle size and purity are controlled to ensure efficient reaction.
Step 2: Acidulation / Digestion
Crushed phosphate rock is reacted with concentrated sulfuric acid in digesters.
The reaction produces phosphoric acid solution and gypsum (CaSO₄·2H₂O) as a byproduct.
Temperature and acid-to-rock ratio are strictly controlled for maximum conversion.
Step 3: Solid-Liquid Separation
The reaction mixture is pumped to filter presses or vacuum filters to separate gypsum from the acid solution.
Efficient separation ensures high purity of phosphoric acid.
Step 4: Acid Concentration (Optional)
Phosphoric acid solution can be concentrated via multi-effect evaporators to reach the desired industrial grade (e.g., 50–54% P₂O₅).
Concentration must balance energy consumption and product quality.
Step 5: Storage and Distribution
Finished acid is stored in corrosion-resistant tanks.
Distribution systems are equipped with pipelines, pumps, and flow meters to deliver acid safely.
Advantages of Our Industrial Phosphoric Acid Equipment
High Conversion Efficiency: Optimized digester design improves P₂O₅ recovery rate.
Energy-Saving Design: Multi-effect evaporators and heat integration reduce power and steam consumption.
Environmental Compliance: Tail gas scrubbing and gypsum handling minimize emissions and waste.
Durability & Corrosion Resistance: Key components use high-quality stainless steel, acid-resistant coatings, or lined carbon steel.
Automation & Safety: Full process control with alarms, interlocks, and emergency shutdown systems.
Customizable Production Capacity: Systems can be designed from 10,000 to 100,000 tons/year of industrial-grade phosphoric acid.
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