Membrane Caustic Soda plant
Our Ion Exchange Membrane Caustic Soda plant is an advanced chlor-alkali production solution designed for the efficient manufacture of high-quality caustic soda (NaOH), chlorine (Cl₂), and hydrogen (H₂).
The plant utilizes ion-exchange membrane electrolysis technology, which provides high product purity, efficient electrical energy utilization, stable continuous operation, and improved environmental performance compared with older chlor-alkali processes.
The complete production system integrates brine preparation, brine purification, membrane electrolysis, chlorine treatment, hydrogen treatment, caustic soda concentration, storage, electrical systems, instrumentation, and automatic process control.
Main Production Process
The typical process includes:
Salt Preparation → Brine Purification → Secondary Brine Treatment → Membrane Electrolysis → Caustic Soda Treatment → Concentration → Storage
During electrolysis, purified sodium chloride brine is separated into chlorine, hydrogen, and caustic soda. The ion-exchange membrane helps maintain separation between the anode and cathode compartments, supporting efficient production of high-quality caustic soda.
Commercial caustic soda is commonly further concentrated after electrolysis to meet the required product specification. The actual process configuration can be customized according to production capacity and product requirements.
Main Plant Sections
- Raw salt and brine preparation system
- Primary brine purification
- Secondary brine purification
- Fine brine filtration
- Ion-exchange membrane electrolyzer
- Chlorine cooling and treatment system
- Hydrogen cooling and treatment system
- Caustic soda circulation system
- Caustic soda evaporation and concentration
- Product storage and transfer
- Electrical power supply
- PLC/DCS automatic control system
- Water, steam and utility systems
Advantages of Membrane Technology
- High-quality caustic soda production
- Efficient electricity utilization
- Continuous industrial operation
- High level of process automation
- Reduced environmental impact
- Reliable product quality
- Flexible plant capacity
- Suitable for modern chlor-alkali projects
We provide customized engineering and equipment solutions according to the customer's required capacity, salt quality, electricity conditions, cooling water availability, product concentration, site conditions, and local engineering standards.
Our Ion Exchange Membrane Caustic Soda plant is suitable for chemical companies, petrochemical groups, industrial investors, water-treatment companies, and integrated chemical projects in the Middle East, Africa, Russia, and other international markets.
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