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As a professional manufacturer from Tianjin, China, Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd. proudly introduces our Fully Automatic Caustic Soda Production Equipment, engineered to deliver exceptional purity with significantly reduced salt and electricity consumption. This system is designed for chlor-alkali producers who demand lower operating costs, stable output, and minimal environmental footprint. With our advanced ion-exchange membrane technology, every production line is tailored to your capacity and utility conditions, ensuring simple operation and consistent product quality.
Core Technical Highlights
Zero-Compromise Salt Efficiency: Our membrane electrolysis configuration reduces brine carryover significantly, cutting salt waste and purifying the final caustic soda lye with less re-processing.
Optimized Energy Utilization: With carefully selected electrolyzer cells and a high-efficiency rectifier system, this equipment lowers direct current (DC) power consumption, giving you improved kWh per ton of NaOH.
Fully Automated Process Control: Equipped with PLC and an optional DCS system, the equipment automatically manages temperature, pressure, current density, and lye concentration, allowing single-operator supervision.
Compact Footprint & Flexible Payload: Modular assembly allows for rapid installation and easy scale-up, making it suitable for both new plants and revamping old chlor-alkali lines.
Robust Component Durability: All liquid-contacting parts are made of corrosion-resistant titanium, nickel alloys, or superior polymer lining to withstand harsh brine and alkali conditions.
Cleaner Work Environment: Sealless pumps, close-coupled piping, and automatic venting reduce chemical leakage and ensure a safer, more compliant workshop.
Typical Process Flow & Main Modules
The equipment combines a pretreated brine saturation system, primary and secondary brine purification, membrane electrolysis stack, dechlorination, and an energy-saving evaporation-concentration unit. Below are the primary sections:
| Brine Treatment | Automatic filtration and ion-exchange polishing to secure high-purity brine (Ca+Mg |
| Electrolysis System | Zero-gap membrane cells with optimized anode/cathode coating for lower cell voltage and stable current efficiency |
| Anolyte/Dechlorination | Efficient chlorine stripping and neutralization to minimize salt content in the final product |
| Evaporation & Cooling | Multi-effect falling film evaporator producing 30% – 50% NaOH with low energy consumption |
| Utility Integration | Optional heat recovery loops to further improve overall energy efficiency |
Key Parameters at a Glance
| Output Caustic Soda Concentration | 32% – 50% (adjustable by evaporation stages) |
| Current Density | 3.5 – 6.0 kA/m², optimized based on client power tariff |
| Power Consumption | Approximately 5% – 8% lower compared to conventional designs (actual data depends on membrane brand and rectifier efficiency) |
| Salt Content in Product | Controlled below 30 ppm in 50% NaOH, meeting high-end market requirements |
| Control System | PLC + touchscreen, optional remote SCADA and data historian |
| Guarantee & Support | Full site commissioning assistance, supervisor training, and 12-month warranty package |
Advantages That Reduce Your Cost Per Ton
Lower Salt Carryover – Less salt means lower refining and evaporation load, reducing both energy and chemical consumption.
Decreased Electrical Demand – High-precision membrane alignment and polished electrodes reduce ohmic losses; your power bill drops directly.
Higher Process Stability – Automatic pressure and level control avoid membrane damage and unplanned downtime, improving annual operating hours.
Reduced Operator Fatigue – Clear interface, intelligent alarms, and automatic interlocking deliver safe and smooth operation around the clock.
Faster Return on Investment – Lower consumable usage and less waste brine treatment give an accelerated payback period for your project.
Adaptable For Your Project
Whether you plan a green-field chlor-alkali facility or need to replace an aging diaphragm cell line, ZLN can design a compatible system. We supply the entire assembly — including brine sludge treatment, hydrogen handling, chlorine drying, and sub-station equipment — as one integrated solution. We also welcome customized membrane supplier choices (e.g., Nafton or Flemion based on your preference) and can offer optional semi-autonomous operation for small-scale plants.
Company Strength & Trusted Support
Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd. is a manufacturing enterprise located in Tianjin, China, with convenient access to one of the largest international ports in Northern China. We export to North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and our domestic market. Our production lines follow quality management practices, and other compliance documentation can be provided upon request. With hands-on engineering capability, we are able to support your feasibility study, site planning, installation training, and after-sales spare parts supply from a single source. We invite you to contact ZLN with your capacity requirements and site utility details; our engineers will prepare a process design and a consumption guarantee specifically for your project.
Ready to reduce salt loss, save electricity, and modernize your caustic soda production? Send your inquiry to ZLN today and receive a detailed proposal with a tailored energy-saving analysis.
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