Repair and Restoration of Gas Flues

Repair and structural restoration of coke oven gas flues is a crucial process for maintaining the efficiency and safety of equipment operations. In this project, we will review the main stages and methods for performing these tasks.

Condition of the Flue Before Work

The condition of the flue before work included significant contamination and damage that required immediate intervention. The main problems included the accumulation of tar and contaminants, as well as the appearance of leaks and cracks.

Cleaning the Base

Cleaning the base is performed using metal brushes to remove tar and contaminants. A special chemical cleaner is used for chemical cleaning and dust removal, which replaces standard sandblasting and prevents the formation of sparks. This method ensures a high level of adhesion to the existing flue body.

Sealing Leaks

A chemical anchor is used to seal leaks, which sets in 5 minutes. High adhesion and special chemical compounds ensure complete sealing of the area and provide compressive strength up to 100 N/mm².

At this stage, it is important to ensure the sealing and restoration of the flue's geometry, as well as to increase its tensile strength. The use of modern materials allows avoiding equipment shutdowns and performing non-flame work.

Applying Primer and Leveling Compound

After cleaning and sealing leaks, a primer is applied to ensure high adhesion. Then, a chemically resistant and wear-resistant leveling compound is used, which provides rigidity and strength to the system after drying.

Bonding Carbon Fiber Fabric

An important stage is the bonding of bidirectional polycarbonate carbon fiber fabric with high tensile and compressive strength, which ensures the system's resistance to pressure or vacuum during equipment operation.

The use of modern materials and technologies significantly improves the efficiency and safety of flue repairs, ensuring the durability and reliability of the system.

Benefits of the System

• Ensuring the sealing of the repaired area
• Restoration of the flue's geometry
• Increase in tensile strength
• Maintaining the weight of the structure and load
• Continuous work without equipment shutdowns and non-flame method