The engineering task
Liquid droplets and short liquid surges must be removed upstream of a compressor, flare or gas-treatment unit. Diameter is governed mainly by gas flow, while height follows from separation zones, liquid holdup and instrument spacing.
For slender equipment, wind load and skirt design can govern as much as internal pressure. An incorrect droplet-size or slug-volume assumption can cause carry-over despite apparently adequate gas area.
Required design data
- Gas flow and maximum liquid ingress
- Target droplet size and mist eliminator type
- Holdup, alarm and response times
- Equipment height, wind region and site
Technical solution approach
Define operating cases
Evaluate normal operation, maximum gas rate and liquid slug separately.
Determine diameter from separation
Allowable gas velocity and demister loading provide the required free area.
Set vertical zones
Arrange inlet, calming, demister and liquid zones with sufficient clearances.
Calculate pressure parts
Verify shell, heads and nozzles for pressure and local loads.
Check support
Match skirt, natural frequency, wind moment and anchorage to final height.
Expected deliverables
Suitable SOL ALPHA modules
The modules form a technically plausible toolchain. Their final selection and sequence will be confirmed during the later calculation against the applicable code and project conditions.