Asia Chemical Engineering Co., Ltd. is one of the most reliable manufacturers and suppliers of sodium hydroxide plant production line in China. Please rest assured to wholesale cost-efficient sodium hydroxide plant production line from our factory. Good service and reasonable price are available.
Automation level: Our sodium hydroxide production line has a high degree of automation, and each process link is monitored and controlled in real time through advanced control systems. From the transportation of raw materials, current and voltage control during electrolysis, temperature and liquid level adjustment of evaporation and concentration, to the metering of product packaging, all can be automated, reducing the errors and uncertainties caused by manual operation.
Safety measures: In view of the dangerous factors such as toxic and harmful gases (such as chlorine), highly corrosive substances (such as sodium hydroxide itself), and high temperature and high pressure involved in the production process of sodium hydroxide, the production line is equipped with complete safety facilities. For example, a toxic gas leak detection and alarm device is installed, which can promptly sound an alarm and start the emergency treatment system once chlorine and other gases leak; anti-corrosion and anti-leakage facilities are set up in areas involving sodium hydroxide operations, and corresponding protective equipment is equipped for operators to use; regular safety inspections and maintenance of high-temperature and high-pressure equipment are carried out to ensure its stable and reliable operation and prevent safety accidents.
Core equipment:
Electrolyzer: Key equipment in caustic soda production. Both diaphragm and ion exchange membrane electrolyzers directly impact output, quality, safety, and stability.
Evaporator: The caustic soda solution from the electrolyzer is typically under-concentrated, so an evaporator is used to increase its concentration. Multi-effect evaporators, which use steam to heat and evaporate water, are commonly used for energy-efficient concentration, raising the caustic soda to industrial standards (e.g., 30%, 32%, or 50%).
Separation and Purification: Filtration devices remove solid impurities, while ion exchange resin towers eliminate trace metal ions (e.g., calcium, magnesium) and other impurities, ensuring high-purity, stable-quality caustic soda for industrial use.
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Product quality control and specifications
Quality control indicators: The quality of sodium hydroxide products is measured and controlled by multiple indicators, among which the key indicators include sodium hydroxide content, sodium chloride content, iron content, etc. In high-quality sodium hydroxide products, the sodium hydroxide content must strictly meet the corresponding specifications. For example, in industrial-grade 30% sodium hydroxide solution, the content error must be controlled within a very small range; sodium chloride, as an impurity, must be as low as possible, because too much sodium chloride will affect the effect of sodium hydroxide in many downstream applications; the iron content must also be strictly controlled, otherwise it will cause the color of the sodium hydroxide solution to turn yellow.
Product specification diversity: Sodium hydroxide products have different specifications for the market to choose from. Common ones are liquid caustic soda (sodium hydroxide solutions of different concentrations, such as 30%, 32%, 50%, etc.) and solid caustic soda (solid sodium hydroxide obtained by further evaporation concentration, crystallization, drying and other processes). Sodium hydroxide of different specifications is suitable for different industrial fields. For example, the papermaking industry mostly uses liquid caustic soda, which is used to dissolve lignin and other components in the cooking process; while in some fine chemical fields that require easy storage and transportation and extremely high purity of sodium hydroxide, high-quality solid caustic soda products may be selected.
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