VP · Technology
Vapor Permeation
Vapor permeation runs the same dense membrane chemistry as pervaporation, but on a vapor-phase feed. That means lower mass transfer resistance and higher fluxes, with the trade-off that the feed must be vaporized first. Used where the feed is already in the vapor phase (reactor exhaust, dryer offgas) or where the highest possible flux is needed.
What it solves
Performance you can size against.
The outcomes below come from commissioned systems and verified pilots, not theoretical limits. Every number is independently testable on your own feed.
- VOC capture from process exhaust
- >98%
- Recovers solvents from reactor and dryer offgas at ambient pressure.
- Higher flux than pervaporation
- 2 to 5x
- Compact systems for high-throughput applications.
- Compatible with existing process
- No need to condense and re-vaporize; we tap directly into vapor lines.
How it works
The working principle.
A vapor feed is fed across the membrane at low pressure. The target component sorbs into the dense membrane and diffuses across. A vacuum or chilled sweep on the permeate side condenses the recovered fraction. Non-permeating components return to process or vent.
Process diagram
Custom SVG to be added in design phase
Performance envelope
Specs and operating range.
For preliminary sizing only. Production sizing is always validated against your specific feed.
- Operating temperature
- 60 to 120°C
- Operating pressure
- 1 to 3bar absolute
- Solvent capture rate
- >98%
- Permeate purity
- >99.5wt%
Where it's deployed
Industries that use this process.
Vapor Permeation fits some sectors better than others. The industries below are where we have shipped multiple systems.
Have a feed that VP
might fit?
We will pilot before we promise. Send us a sample and a target outcome. If the technology fits, we will tell you what to expect; if it does not, we will tell you that too.