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Fuel Gas Filter/Separator Calculator

Vertical Configuration with Centrifugal Tuyere

Fuel Gas Filter/Separator Sizing
Size vertical fuel gas filter/separators for compressor fuel gas conditioning. Features centrifugal tuyere inlet (instead of vanes), smaller coalescing elements, and built-in coalescer. Removes liquids and solids with 1-2 PSI pressure drop when new and clean.

Service Conditions

Determines efficiency and outlet quality requirements
At standard conditions (60°F, 14.7 psia)
psig
°F

Gas Properties

Air=1.0
Natural gas: 0.55-0.80 typical
cP
At operating temperature
-
Leave blank to estimate
gal/MMSCF
Max 10% by weight (no slugs)

Design Parameters

Smaller elements per fuel gas spec
Built-in coalescer enhances efficiency
psi
Typical spec: 1-2 psi when new
psi
Element changeout threshold
%

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Understand coalescence, filter element design, centrifugal separation, and two-stage filter separator principles

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Fuel Gas Filter/Separator Design

Key Characteristics:

• Vertical configuration only
• Centrifugal tuyere inlet device
• Smaller compact filter elements
• Built-in coalescer stage

Operating Limits:

ΔP (clean) = 1-2 PSI typical
Liquid Loading ≤ 10% by weight
No slug capability
No turndown ratio limitation

Applications:
• Compressor fuel gas conditioning
• Gas turbine fuel preparation
• Burner fuel gas cleaning
• Instrument gas polishing

Outlet Quality:
• Compressor fuel: ≤0.1 gal/MMSCF
• Turbine fuel: ≤0.05 gal/MMSCF
• Instrument gas: ≤0.01 gal/MMSCF

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