Chlor-alkali titanium electrolyzer

I. What Are Titanium Electrolyzers for the Chlor-Alkali Industry?

Titanium electrolyzers for the chlor-alkali industry are electrolysis devices manufactured with high-purity industrial titanium or titanium alloys as their primary structural material. They are specifically designed for the continuous electrochemical reactions involved in the production of chlorine and caustic soda in the chlor-alkali industry.

Compared to traditional steel or lead-based electrolysers, titanium offers exceptional corrosion resistance, mechanical strength, and long-term stability, enabling reliable, long-term operation in corrosive environments such as concentrated brine, chlorine gas, and sodium hydroxide.

Our titanium electrolysers are typically equipped with MMO (mixed metal oxide) coated anodes, which, in combination with the cathode system, enable a highly efficient and safe electrolysis process, making them the core equipment in modern chlor-alkali production.

 

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II. Working Principle of Titanium Electrolyzers

Titanium electrolyzers use direct current to drive the electrolysis of brine (NaCl solution), separating and producing chlorine, caustic soda, and hydrogen:

Anode reaction (production of chlorine gas)

2Cl⁻ → Cl₂↑ + 2e⁻

Cathode reaction (production of hydrogen gas and sodium hydroxide)

2H₂O + 2e⁻ → H₂↑ + 2OH⁻

Overall Reaction

2NaCl + 2H₂O → 2NaOH + Cl₂↑ + H₂↑

Titanium itself does not participate in the reaction but provides a stable, corrosion-resistant support structure for the electrolysis process. Combined with MMO-coated anodes, it enables high-efficiency, low-energy-consumption, and long-lasting electrolysis operations.

 

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III. Advantages of Our Titanium Electrolysis Cells

1. Exceptional Corrosion Resistance

High-purity titanium (Gr1/Gr2) remains stable in chlorine gas, high-salinity water, and high-pH environments, without rusting or contaminating the medium.

2. Ultra-Long Service Life

Compared to lead and graphite anodes, the service life can reach 3–8 years or even longer, significantly reducing maintenance frequency and costs.

3. High Current Efficiency

MMO anodes feature low overpotential and low polarization, supporting high current density operation, which increases chlorine production and reduces energy consumption.

4. High Structural Strength

Titanium is strong, lightweight, and resistant to deformation, withstanding long-term electrolytic pressure and temperature fluctuations.

5. Flexible Customization

Can be tailored to specific production capacity, cell dimensions, and process parameters to accommodate chlor-alkali systems of various scales.

6. Low Maintenance Costs

No need for rubber lining; the ability to repeatedly repair the coating extends service life and reduces long-term operating costs.

 

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IV. Our Titanium Electrolytic Cell Size Options

Item Parameter Range

Cell Length 500 – 6000 mm

Cell Width 300 – 2000 mm

Cell Height 300 – 1500 mm

Plate Thickness 3 – 20 mm

Effective Electrolysis Area Customized per design

Single-Cell Current 500 A – 50,000 A

Operating Temperature ≤ 90°C

Can be precisely customized according to customer process requirements: current density, brine concentration, and production capacity

 

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V. Types of Titanium Electrolysis Cells

Based on anode materials and coating technologies, titanium electrolysis cells are primarily classified into the following types:

1. MMO-Coated Titanium Electrolysis Cells (Mainstream Recommendation)

The anode surface is coated with precious metal oxides such as RuO₂ and IrO₂

Low chlorine evolution overpotential, reducing energy consumption

High current density, stable operation

Long service life, with repairable coatings

Widely used in ion-exchange membrane chlor-alkali systems, sodium hypochlorite generators, etc.

2. Lead-based Anode Titanium Electrolyzers (Legacy Process)

Gradually being phased out

High energy consumption, short service life

Risk of heavy metal contamination

3. Graphite Anode Titanium Electrolytic Cell (Found in a Few Outdated Systems)

Rapid wear and frequent maintenance

Low current efficiency and contamination of the electrolyte

Currently found only in a very small number of outdated plants

 

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VI. Diverse Applications of Titanium Electrolytic Cells

MMO-coated titanium electrolytic cells for the chlor-alkali industry are not only suitable for traditional chlorine and caustic soda production but can also be extended to the following fields:

Chlor-alkali Industry:

Caustic soda production (NaOH)

Chlorine production (Cl₂)

Hydrogen by-product

Water Treatment and Disinfection:

Sodium hypochlorite generators

Industrial Circulating Water Sterilization

Seawater Electrolysis Disinfection

Chemical and Environmental Engineering:

Electrolytic Oxidation Processes

High-Salinity Wastewater Treatment

Wastewater Chlorination Degradation

Other Applications:

Electroplating Recovery

Specialized Industrial Ion Treatment

 

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VII. Why Choose Our MMO Titanium Electrolysis Cells?

Advantage Description

Electrolysis Efficiency High current density, low energy consumption, reducing operating costs

Corrosion Resistance High-purity titanium + MMO coating, ensuring long-term stable operation

Service Life 3–8 years, or even longer

Maintenance Costs Low; repairable coating reduces downtime

Environmental Performance Pollution-free, compliant with international environmental standards

Our MMO-coated titanium electrolytic cells have been widely adopted in numerous chlor-alkali projects, significantly enhancing system operational stability and serving as an ideal replacement for traditional electrolytic cells.

 

FAQ

1. What is the lifespan of a Chlor-alkali electrolyzer?
The lifespan of an electrolyzer depends on the operating conditions but generally lasts between 10-15 years with proper maintenance.

2. Can the Chlor-alkali electrolyzer be customized?
Yes, we offer fully customizable electrolyzers to fit your unique production requirements.

3. What industries use Chlor-alkali electrolyzers?
Common industries include chemical processing, water treatment, energy, and the metal industry.

4. How do you ensure the quality of the electrolyzers?
We follow stringent quality control measures and conduct comprehensive testing on every unit before shipment.

Contact Us

If you are interested in learning more about our Chlor-alkali electrolyzers or would like a quote, please reach out to us directly:

Email: Jolina@bjhyti.com
Phone: +86-18691787097