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Steel Industry

High-Efficiency Energy-Saving Technologies for Steel Plants: Applications of Heat Pipe and Spiral Plate Heat Exchangers

Current Challenges

  • High-Temperature Flue Gas Emissions (e.g., blast furnaces, converters, reheating furnaces)
  • Low Efficiency of Traditional Heat Exchangers (Poor heat transfer, rapid fouling)
  • Frequent Maintenance (Affecting production efficiency)

Improvement Strategies

  • Install Heat Pipe & Spiral Plate Heat Exchangers to enhance waste heat recovery
  • Reduce Maintenance Costs and extend equipment lifespan
  • Lower Fuel Consumption and reduce chimney emissions

Heat Pipe Heat Exchanger

  • Applications

1. Blast Furnace Hot Stoves – Recovering flue gas heat to preheat combustion air

2. Sinter Plant Exhaust Gas Recovery – Reducing exhaust temperature and improving energy recovery efficiency

3. Converter Flue Gas Cooling – Lowering emission temperature and recovering waste heat

  • Advantages

✅ High Thermal Conductivity (Heat transfer through internal evaporation & condensation)

✅ Adaptable to High-Temperature Environments

✅ Modular Design, allowing individual tube replacement for easy maintenance

✅ Minimizes Ash Buildup & Corrosion, improving long-term efficiency

  • Case Study: The blast furnace exhaust recovery system

1. Installed a heat pipe heat exchanger in the blast furnace exhaust system to recover 300°C waste gas heat.

Spiral Plate Heat Exchanger

  • Applications

1. High-Temperature Water Cooling Systems – Minimizing cooling water usage

2. High-Temperature Water Cooling Systems – Minimizing cooling water usage

3. Hydraulic Cooling System in Steel Plate Press machine (improve cooling efficiency)

  • Advantages

✅ High Thermal Conductivity (Heat transfer through internal evaporation & condensation)

✅ 30–50% Higher Heat Exchange Efficiency (Turbulent flow effect from spiral design)

✅ Reduced Fouling, lowering maintenance requirements

✅ Compact Design, suitable for tight installation spaces

✅ Capable of High-Temperature & High-Pressure Applications (Up to 4 MPa)

  • Case Study: High-Temperature Steam Condenser Upgrade with Spiral Plate Heat Exchanger