Posted on September 19, 2024 by Bill Campbell, Eastern Region Sales Manager
The Challenge: Sealing evaporator dome lids: Multiple effect evaporators play a crucial role in the pulp and paper industry by concentrating “black liquor,” a byproduct of wood pulp digestion. This process is vital for chemical recovery and steam reuse, contributing significantly to the industry’s sustainability efforts. However, one common challenge with these evaporators is the frequent leakage of dome lids. Traditional large-diameter gaskets combined with joint sealants often fail to provide a reliable seal, creating multiple leak paths that compromise operational efficiency.
The Solution: Durlon® welded gaskets: Durlon® products offer a game-changing solution: welded gaskets specifically designed to endure the harsh conditions found in pulp and paper applications. These gaskets are engineered to resist aggressive chemicals, temperatures up to 500°F, and varying pressures, making them ideal for use in multiple effect evaporators.
Why choose welded gaskets: Durlon® welded gaskets made from filled PTFE materials such as Durlon® 9000, 9000N, and 9200 utilize a proprietary welding process that eliminates adhesives, resulting in a stronger, more reliable seal. These gaskets can be produced in sizes exceeding 60 inches, making them ideal for large evaporator lids. They are resistant to caustic cleaning agents and can handle a range of temperatures and pressures.
GRI’s key gasket solutions:
- Durlon® 9000: A high-performance PTFE gasket designed for aggressive chemical environments. It is certified for FDA and API compliance, making it suitable for a variety of demanding applications.
- Durlon® 9000N: Known for its excellent chemical resistance and durability, this gasket is versatile and dependable for numerous applications.
- Durlon® 9200: Specifically engineered to withstand harsh chemicals, including caustics and nitric acid, Durlon® 9200 provides a robust sealing solution for extreme conditions.
Conclusion: To enhance operational efficiency and minimize leaks in multiple effect evaporators, consider GRI’s Durlon® welded gaskets. These gaskets are engineered to meet the rigorous demands of the pulp and paper industry, providing a reliable and durable sealing solution that ensures your evaporators perform at their best.
For more information on GRI’s fluid sealing solutions and to discuss your specific requirements, contact us today!