Scrubber Sizing
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Scrubber & Knockout Drum Calculator

Gas Conditioning per GPSA and API Standards

Gas Scrubber & Knockout Drum Sizing
Size vertical or horizontal scrubbers and knockout drums for compressor suction protection, fuel gas conditioning, and mist elimination using GPSA and API RP 14E methodology. Calculates vessel diameter, mist eliminator sizing, liquid holdup, and nozzle sizes.

Operating Conditions

Gas Properties

Leave blank to auto-calculate
Expected liquid carryover
Condensate ~40-50, Water ~62

Design Configuration

Design Margins

Additional liquid accumulation
Per API RP 14E (typ 60-100)

๐Ÿ“š Learn the Theory

Understand K-factor design, mist eliminator selection, Souders-Brown equation, and scrubber applications

Read Engineering Guide โ†’

Quick Reference

  • Wire Mesh: K = 0.35 (vertical)
  • Vane Pack: K = 0.25-0.30
  • No Internals: K = 0.12-0.18
  • Comp Suction: Min 2 min holdup
  • Flare KO: Size for max relief

Frequently Asked Questions

What is a scrubber or knockout drum used for?

A scrubber or knockout drum removes liquid droplets from gas streams to protect downstream equipment such as compressors and fuel gas systems.

What methods does this scrubber sizing calculator use?

This calculator sizes gas scrubbers and knockout drums using API and GPSA methods for compressor suction, fuel gas, and equipment protection applications.

Is this scrubber sizing tool free to use?

Yes, this scrubber and knockout drum sizing calculator is completely free to use online.

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