Filter Material which Blocks Volatile Liquid, Passes Vapor

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SUMMARY

This discussion focuses on the challenge of filtering a volatile liquid's vapor while preventing liquid droplets from passing through. Participants suggest using a flow-driven cyclone separator or a vortex tube as potential solutions to achieve a high output flow rate without significant vapor pressure drop. The conversation emphasizes the need for a filtering medium that maintains performance across various orientations and conditions, particularly for substances like butane. The drying of filter materials to prevent saturation is also highlighted as a critical consideration.

PREREQUISITES
  • Understanding of vapor-liquid separation techniques
  • Familiarity with cyclone separators and vortex tubes
  • Knowledge of fluid dynamics and flow rates
  • Basic principles of vapor pressure and filtration materials
NEXT STEPS
  • Research the design and operation of flow-driven cyclone separators
  • Explore the mechanics of vortex tubes for vapor separation
  • Investigate advanced filtration materials that resist saturation
  • Study the impact of temperature on vapor pressure and flow rates
USEFUL FOR

Engineers, researchers, and product developers involved in vapor filtration systems, particularly those working with volatile liquids and seeking efficient separation methods.

Unconquered
Hi, All.
Given a scenario of a closed volume of volatile liquid and it's associated vapor above boiling point (ex. butane in a can at room temp.) which is dispensed through some tube or line:

Is there some filtering medium capable of ensuring that only vapor may pass through the line, producing a completely (or nearly) "dry" output? Of course we could just pull the vapor from the top of the volume, but I would like a solution which would work in any orientation to ensure a consistent density of the output for a given temperature.

I know this is possible by some means which have a very low molar flux rate, but I'm looking for higher output flow rates and no appreciable drop in vapor pressure across the filter at steady state.
Thank you for your attention.
 
Last edited by a moderator:
Engineering news on Phys.org
Hm.
Thank you.
 

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