KOH Circulation System

The KOH (Potassium Hydroxide) Circulation System designed and engineered by Verito Engineering Private Limited plays a crucial role in the electrolyser-based Green Hydrogen Production Project. This high-precision system is responsible for circulating and controlling KOH solution within the electrolyser setup to ensure efficient hydrogen production through electrolysis of water.

Overview: The KOH Circulation System is a fully automated system designed to circulate and regulate the potassium hydroxide solution between the electrolyser cells and associated components. Its key function is to maintain the electrolyte's concentration, flow rate, and temperature, optimizing the performance of the electrolysers for sustainable hydrogen generation.

 

 

 

Key Features and Benefits

 

Corrosion-Resistant Materials

  • The skid is constructed with high-quality, corrosion-resistant materials such as SS316L, ensuring long-term durability when handling caustic KOH solutions.

Precision Flow Control

  • Equipped with advanced metering and dosing pumps, the KOH Circulation System offers accurate control of the electrolyte flow rate, which is essential for maintaining optimal electrolysis conditions.

Temperature Management

  • Integrated heat exchangers are part of the skid to manage the temperature of the KOH solution, ensuring that it stays within the desired operational range to prevent overheating and to maintain electrolyser efficiency.

Advanced Instrumentation

  • The skid includes an array of sensors, including flow meters, pressure gauges, and temperature controllers, all connected to a PLC-based control system. This allows for real-time monitoring and adjustments, ensuring precise process control.

Safety Features

  • The system is equipped with safety interlocks, pressure relief valves, and overflow protection to ensure safe operation in a high-pressure environment.

Customizable Flow Rates

  • The system can be tailored to meet different hydrogen production capacities, with variable flow rates that can be adjusted to suit specific electrolyser requirements.

Easy Maintenance

  • Designed with quick-access ports and modular components, the skid allows for easy maintenance and serviceability, reducing downtime.

 

Applications in Green Hydrogen Production

 

The KOH Circulation System is integral to the alkaline water electrolysis process, where potassium hydroxide acts as the electrolyte. The continuous circulation of KOH ensures:

 

  • Stable conductivity of the electrolyte, improving electrolyser efficiency.
  • Consistent removal of heat generated during the hydrogen production process.
  • Minimization of gas bubble formation, which can reduce electrolyser performance.

 

Technical Specification & Capabilities

 

Material of Construction SS316L / Duplex Stainless Steel for wetted parts
Flow Rate Customizable as per application needs (standard range: 0.5 to 5 m³/h)
Pump Type Magnetic drive pumps and diaphragm metering pumps for precise fluid handling
Operating Pressure Up to 10 bar
Temperature Range 20°C to 80°C, with integrated temperature control via heat exchangers
Control System PLC-based with HMI interface for real-time monitoring and adjustments
Electrical Requirements 400V, 50Hz, 3-phase
KOH Concentration Adjustable concentration levels, typically in the range of 20-30% for electrolyser applications

 

Advantages

 

Efficiency

  • Ensures optimal electrolyte flow for maximum hydrogen yield.

Safety

  • Incorporates robust safety mechanisms to prevent spills, overflows, and hazardous pressure build-ups.

Reliability

  • Designed for continuous operation in industrial-scale hydrogen production plants.

Sustainability

  • Contributes to eco-friendly hydrogen generation, supporting renewable energy goals.

 

Applications Beyond Hydrogen Production

Although primarily designed for use in L&T’s Green Hydrogen Production project, the KOH Circulation System can be adapted for other applications, such as chemical processing, fuel cell electrolyte management, and wastewater treatment systems.

 

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