The Decanter Centrifuge for Caustic Soda Production is designed for solid-liquid separation in caustic soda manufacturing processes, especially for brine purification residue treatment and chemical precipitation separation before membrane electrolysis.

It continuously removes insoluble impurities and precipitation solids from purified brine systems, helping maintain stable membrane cell operation, improve brine quality, and reduce contamination risks in caustic soda production.

• Brine purification sludge separation before electrolysis
• Caustic soda plant salt mud treatment
• Calcium carbonate precipitation separation
• Magnesium hydroxide residue dewatering
• Membrane cell brine preparation
• Chemical precipitation slurry concentration
• Brine filtration residue reduction
• Solid recovery from caustic soda process streams

Impact of Brine Purity

Low-level impurities in brine can affect membrane performance and increase electrolysis maintenance.

Fine Precipitation Solids

Chemical purification generates fine CaCO₃ and Mg(OH)₂ particles that require efficient separation.

Chloride Corrosion Conditions

High chloride concentration requires corrosion-resistant equipment materials.

Stable Electrolysis Operation

Continuous impurity removal is required to maintain consistent caustic soda production.

Raw Brine
→ Chemical Purification Process
→ Decanter Centrifuge
→ Purified Brine + Dewatered Residue

Purified Brine → Membrane Electrolysis

Dewatered Residue → Recovery / Disposal

Peony Can Provide

• Caustic soda process separation evaluation
• Brine purification residue treatment solution
• Decanter centrifuge selection
• Corrosion-resistant material configuration
• High chloride slurry separation design
• Continuous residue discharge system
• PLC automatic control system
• Integration with chlor alkali production lines

Improved Electrolysis Stability

Efficient removal of purification residues helps maintain stable membrane cell operation.

Better Brine Quality Control

Continuous solid separation reduces impurity accumulation in the brine system.

Corrosion-Resistant Design

Materials such as 316L stainless steel, duplex stainless steel, or titanium can be selected according to chloride conditions.

Continuous Production Capability

The decanter centrifuge supports continuous operation for large-scale caustic soda plants.

Reduced Maintenance

Removing precipitation solids helps reduce fouling and cleaning frequency.

Please provide:

• Brine composition
• Solid type
• Solid concentration
• Particle size
• Flow rate
• Chloride concentration
• Temperature
• Corrosion conditions
• Required solid moisture
• Operating hours

Peony cooperates with caustic soda producers, chlor alkali plants, EPC contractors, and process partners.

We also welcome qualified global agents and local partners for industrial separation solutions.

Contact us with your project requirements and market information to explore long-term cooperation opportunities.