Introduction

A Primary Gas Cooler (PGC) is an essential part of a coke oven gas recovery system, designed to reduce the temperature of crude gas while removing impurities such as tar and naphthalene. The Horizontal Tube Primary Gas Cooler is widely used in coke plants, chemical industries, and energy-saving projects due to its high heat transfer efficiency, stable operation, and compact design.

Design and Structure

The Horizontal Tube Primary Gas Cooler features:

• Vertical Rectangular Shell – Compact design suitable for limited installation spaces.

• Cooling Tubes at 30° Angle – Φ57×3 steel tubes arranged densely to maximize heat transfer.

• Multi-Stage Water Supply – Allows chilled water, circulating water, and heating water to be used in different sections.

• Spray Cleaning System – Ammonia water or condensate is sprayed on the tubes to remove tar and naphthalene deposits, ensuring continuous performance.

This configuration enables strong gas turbulence and even cooling, achieving an outlet gas temperature only about 2°C above the inlet water temperature.

Working Principle and Process

1. Gas-Liquid Separation – Crude coke oven gas (~80°C) enters the separator to remove tar-ammonia water mixture.

2. Upper Stage Cooling – Circulating water at ~23°C cools the gas to ~45°C.

3. Lower Stage Cooling – Chilled water at ~16°C reduces gas temperature further to ~22°C.

4. Gas Boosting & Purification – The cooled gas passes through a booster fan, then into an electrostatic tar precipitator for fine tar removal before entering the desulfurization and sulfur recovery units.

5. Condensate & Byproduct Handling – Condensate, tar, and ammonia water are collected, recycled, or sold for industrial use.

Key Benefits

• High Cooling Efficiency – Dense tube arrangement and crossflow design enhance turbulence and heat exchange.

• Energy Savings – Lower outlet temperature reduces the load on downstream equipment.

• Durability – High-quality steel tubes ensure long service life under harsh operating conditions.

• Low Maintenance – Spray cleaning minimizes fouling and scaling issues.

• Versatile Applications – Suitable for various industrial gas cooling systems.

Applications

• Coke oven gas recovery systems

• Chemical processing plants

• Energy-saving and environmental protection projects

• Gas cooling before desulfurization

Why Choose Our Horizontal Tube Primary Gas Cooler?

Our Primary Gas Coolers are designed according to international pressure vessel standards and optimized for maximum thermal performance. We provide custom designs to match specific plant requirements, ensuring reliable operation, minimal downtime, and lower operational costs.

Conclusion

If you are looking for a high-performance Horizontal Tube Primary Gas Cooler for your coke oven gas cooling needs, our solution offers efficiency, durability, and cost-effectiveness. Contact us today for a customized design that fits your production requirements.