Ensuring Consistent Aviation Fuel Quality Through Advanced Filtration and Coalescing

Producing aviation fuel requires effective removal of both fine particulate contamination and trace water. Conventional electrostatic coalescers are effective for bulk water removal but can be sensitive to process conditions, fuel chemistry and the presence of surfactants or fine solids.

These conditions can contribute to:

To address these challenges, the refinery implemented a compact downstream polishing solution after the existing electrostatic coalescer. This approach helped improve fuel quality consistency without requiring major changes to existing infrastructure.

The filtration stage was designed to capture fine suspended particles and help ensure the ATK product consistently met cleanliness requirements. By removing particulates upstream of final storage, the system helped stabilize overall product quality and prevent downstream contamination issues.

The polymeric coalescing stage was designed to provide reliable water removal performance under conditions where traditional electrostatic systems can struggle. Unlike electrostatic coalescers, polymeric media are less sensitive to surfactants, additives and other surface-active impurities.

Together, these technologies provided comprehensive removal of both solid and liquid contaminants in a single downstream polishing step.

Following implementation, the refinery achieved measurable improvements in fuel quality and operational performance:

• Consistent ISO 4406 cleanliness levels of 19/17/14 or better
• Free water content reduced to 15 ppmv or below
• Consistent achievement of aviation fuel specifications
• Continuous production at design capacity
• Reduced process variability
• Reduced reliance on reprocessing and extended settling operations

These improvements enabled the refinery to maintain product quality while supporting production objectives with greater confidence. 

The integrated filtration and coalescing solution provided a robust barrier against fine solids and dispersed water, helping the refinery consistently meet aviation fuel cleanliness and water content requirements while reducing variability in final fuel quality.

The elimination of off-spec batches reduced process variability and removed bottlenecks associated with reprocessing and extended tank settling times. This supported more stable operations and reduced delays associated with settling and reprocessing activities.

The modular solution was installed downstream of existing equipment, allowing the refinery to enhance performance while retaining its existing separation infrastructure. Deployment was completed with minimal disruption to ongoing operations.

As aviation fuel standards continue to demand higher levels of cleanliness and water removal, refiners need reliable technologies that help maintain product quality across a range of operating conditions.

Pall's filtration and separation technologies can help refiners:

• Remove fine particulate contamination
• Reduce free water content
• Improve fuel quality consistency
• Support compliance with aviation fuel specifications
• Increase confidence in product quality

By combining high-efficiency filtration with advanced polymeric coalescing, refiners can complement existing separation systems with a targeted downstream polishing approach that can help support consistent aviation fuel production.