Caustic Soda Production Line
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Keywords:
ENGINEERING CASE
Chlor-alkali Chemical Industry
Caustic Soda Plant
Product details
Asia Chemical Engineering Co., Ltd. is one of the most reliable manufacturers and suppliers of caustic soda production line in China. Please rest assured to wholesale cost-efficient caustic soda production line from our factory. Good service and reasonable price are available.
Working Principle
The production line uses the ion exchange membrane electrolysis method.
During operation, purified brine enters the anode chamber of the electrolyzer. Direct current passes through the electrodes, causing chloride ions to release electrons and form chlorine gas.
At the cathode side, water molecules receive electrons and generate hydrogen gas and hydroxide ions.
Sodium ions (Na⁺) pass through the membrane and combine with hydroxide ions (OH⁻) to form sodium hydroxide solution.
The membrane prevents chlorine and hydroxide ions from mixing, reducing unwanted chemical reactions inside the electrolyzer.
Operating Conditions
A caustic soda production line normally operates under continuous industrial conditions.
Typical operating conditions include:
Continuous operation: 24 hours/day
Raw material: purified sodium chloride brine
Electrical supply: high-current DC power for electrolysis
Medium characteristics: strong alkaline solution, chlorine gas, hydrogen gas
Temperature control required for electrolyzer and evaporation sections
The system requires corrosion-resistant equipment and automatic monitoring of:
Brine concentration
Electrolysis current
Temperature
Pressure
NaOH concentration
Gas flow rate
FAQ
What technology is used in modern Caustic Soda Production Lines?
Modern plants mainly use ion exchange membrane electrolysis technology.
The membrane cell separates the anode and cathode chambers while allowing sodium ions to pass through.
This technology is used because it provides:
No mercury contamination
High sodium hydroxide purity
Lower chemical contamination between products
Stable continuous operation
What materials are used for Caustic Soda Production Line equipment?
Material selection depends on the chemical environment.
Common materials include:
Titanium: used for chlorine-related equipment because of chlorine corrosion resistance
Nickel alloy: used in concentrated sodium hydroxide environments
FRP: used for chemical storage tanks and corrosion-resistant pipelines
PVC/CPVC/PP: used for brine and chemical transfer pipelines
Rubber-lined steel: used in selected chemical equipment
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